Re: Multi-Tenant Data Architecture
I read with great interest as I encountere the same situation some time ago. In practice (at least in my case), it worked to have the app run on separate EOF stacks accessing different database. So , it simplified the case to only have one instance in JavaMonitor for multi databases. However, it is not the preferred way due to the following same reason.. That is our main concern. Today we have 20 instances, but this number is likely to increase considerably in near future. If it grows to 40, are you planning on having each instance host all 40? I'd look into EOF stack size if you are thinking of having 40 in one JVM and there is a significant amount of data per tenant. That might work out to a lot of RAM per instance and so few instances per machine. It is just something to keep in mind. Shared this too and Chuck has a good point. So I opted to redisign and put all into single database. The backup / restore is a good point. Managing many EOF stacks and ensuring that one tenant does not see another tenants information might be just as complex in either scenario. I have no idea how / if EOModelGroup implements cloning. You would have to test it. I'd probably choose to do it manually so that I had control if I ever needed to make any other changes. When a session is created, you will need to ensure that all editing contexts created for that session use the correct EOObjectStoreCoordinator. You will also want to ensure that you don't use defaultAnything in your code (defaultEditingContext(), defaultModelGroup() etc.) as these are unlikey to return objects from the correct EOF stack. Caveat: this is theoretical, I don't have any experience doing this. I don't think that many people have done this, so you run the risk of finding bugs in seldom executed EOF code. My tests concurred so far. It worked as Chuck mentioned, never use defaultanything. Called OSC right at the session constructor to be safe. Thank you very much! We are not in a hurry to make this change in our application, but we are worried about future. I'll try to make some tests following your advices and see what happens. Please let us know what happens. This is seldom explored territory. I run into the similar situation and will be good to know how it goes. Cheers Cheong Hee ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
ant build file size issue
Hi All, Eclipse 3.3.2 / WOLips 3.3.5304 / WebObjects 5.3 / Leopard 10.5.8 I am trying to build a project using ant embedding the 5.3 frameworks to deploy on 5.4. I can build and run the project fine within eclipse. Yesterday I started getting java heap space issue while trying to build the war file. Thanks to Chuck I now use ANT_OPS. I specify ANT_OPS in the VM variables on the JRE settings page and the project build successfully, BUT my build process which zips up the dist directory now creates a 300Mb tar file instead of a 40Mb tar file. Can anyone suggest why the significant change? I am sure the huge dist directory issue occurred before the ANT_OPS change. Perhaps this was the cause of the java heap space errors. I possibly did a automatic software update since my last deploy, which may have included a java update but not 100% sure. I reverted my project to last week and rebuilt and the dist directory is still huge, so I am sure it is nothing I have explicitly done/coded. I obviously have cleaned the project, my java currentJDK points to 1.5 anyone have any suggestions? Thanks in advance Bearko ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: ant build file size issue
BUT my build process which zips up the dist directory now creates a 300Mb tar file instead of a 40Mb tar file. Can anyone suggest why the significant change? untar it and see what's taking up the space? are we adding something to the tar that we didn't before? ms ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: WebObjects 5.4.3 and SQL Server 2005
On Sep 22, 2009, at 7:36 PM, Chuck Hill wrote: Not sure why that works and not inclined to dig into it right now. Chuck According to the 'legacy' docs, that's the way it's supposed to work. That seems odd as Boolean is not a Number. There is trickery there in EOF. David, your modeling skills should be safe from Chuck's snide comments... for now (^_^) Well lookie there! When you use a Value Class of java.lang.Number, c means Boolean. (c—java.lang.Boolean) I am obviously a far superior modeler/coder than I even realized! I am unlikely to allow simple facts to stand in my way. ;-) Why start now. :-P Dave ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: WebObjects 5.4.3 and SQL Server 2005
On Sep 22, 2009, at 11:29 AM, Freddie Tilley wrote: Value class of type NSNumber does not work for me, using a value class of java.lang.Boolean does. What are the results if you use NSNumber? You could also try Number or java.lang.Number I'm suspicious of the Boolean setting... Dave Thanks! 2009/9/22 David Avendasora webobje...@avendasora.com: Okay, let's try it completely manually. Here's what I have setup in one of my custom Prototypes for MS SQL Server: External Type: bit Class: java.lang.Boolean Data Type: Custom - Custom External Width: Value Class: NSNumber Value Type: c Factory Method: ConversionMethod: Init Argument: These settings work for me in a current project that talks to a SQL Server 2000 DB. Dave On Sep 22, 2009, at 11:01 AM, Freddie Tilley wrote: This will give me class cast errors java.lang.Short cannot be cast to java.lang.Boolean 2009/9/22 David Avendasora webobje...@avendasora.com: That prototype doesn't do what you think it does. That will convert the boolean value true to the string true and and false to false which obviously won't save into a bit column. Look at the intBoolean Wonder prototype. You may need to set the Prototype to intNumber first, and then to intBoolean to get it to work as I think there is a bug in Entity Modeler that doesn't properly update the external type when changing to intBoolean. Dave On Sep 22, 2009, at 10:25 AM, Freddie Tilley wrote: the EOJDBCSQLServerPrototypes boolean type defaults to bit with a custom data type as follows: External Width: 5 Value Class: java.lang.Boolean Value type: c Factory Method: valueOf Conversion Method: toString Init Argument: String 2009/9/22 David Avendasora webobje...@avendasora.com: Hi Freddie, I don't believe Microsoft SQL Server has a boolean datatype. What datatype are you using for the column in the DB? Dave On Sep 22, 2009, at 7:32 AM, Freddie Tilley wrote: I have a problem with writing a boolean value to the database, using the EOJDBCSQLServerPrototypes and the boolean type. I'm also using Chuck Hills MicrosoftPlugin. If I set the boolean to true when creating an object it actually sets this value in the db when saving. But if I edit the object again and set the boolean value to false. It will show the value as false in the list, but it will remain True in the database. And after this I cannot change the value to True anymore. What's going on here? Freddie Tilley ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/webobjects%40avendasora.com This email sent to webobje...@avendasora.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/webobjects%40avendasora.com This email sent to webobje...@avendasora.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/webobjects%40avendasora.com This email sent to webobje...@avendasora.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/webobjects%40avendasora.com This email sent to webobje...@avendasora.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
WO WebServices Java 1.6
Hi list, we are developping a web service frontend to a wo application and we try to implement some security/authentication controls in it. However, when we try to access the SOAPEnvelope part of the ws message, we obtain this exception: java.lang.ClassCastException: com.sun.xml.internal.messaging.saaj.soap.ver1_1.Envelope1_1Impl cannot be cast to java.lang.String at org.apache.axis.SOAPPart.getAsString(SOAPPart.java:554) at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:688) at org.apache.axis.Message.getSOAPEnvelope(Message.java:435) From some googling it seems that this exception can be caused by combination of Axis 1.4 and Java 1.6 - the default version of Java on Snow Leopard. So my questions are: - has anybody any experiences with using WebObjects WebServices with Java 1.6? - did someone succeed in hacking some newer version of axis (Axis2) to work with WO 5.4.3? - should we try and hack our way ugly through, or is there some hope in a new WO release that will make it's WS capabilities compatible with Java 1.6? Thanks, Jarda ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Multi-Tenant Data Architecture
FWIW We uses an setup were access is organized by groups, sub-groups and sub-sub-groups, etc. We have sales reps which manage channel partners, which manage clients or schools. In the schools are more groups. These are all group objects. There are classes that relate to groups, students are related to one or more class. All the groups are in one table, then there is a classes table and students table. The groups are the your tenants. One of our sites has 35819 groups. A user is assigned a group and when the user logges into their group they are given a list of their sub-groups. Users are never aware of their login group, their parent groups or any other group above that. We keep track of their login group in the session. There are certain safe-guards to block exposing objects who's group relationship is not a child of the users' login group. This seems to work pretty well. Issues arise when doing searches for data in a table that's shared with multiple tenants. A tenant should not take the penalty for someone else's large data set. There is a performance hit when combining the database your searching through with the group the tenant belongs to. If you have large tenants you'll need to considere getting them their own server, or at least their own instance(s) +database. Thanks kib We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths. Walt Disney Klaus Berkling Web Application Dev. Systems Administrator DynEd International, Inc. www.dyned.com | www.eskimo.com/~kiberkli ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
saving pdf's to the database
WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? Thanks for your help. Tim On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
That's all I do. Are you embedding the file in the page or having the response download the file as an attachment? John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 11:24 AM, Tim Worman li...@thetimmy.com wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? Thanks for your help. Tim On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
Here's another do'oh question: are you sure the data is making it to the db from the upload? John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 11:24 AM, Tim Worman li...@thetimmy.com wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? Thanks for your help. Tim On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
Hi Tim, Have you looked at ERAttachment? It has been designed to do exactly what you are attempting and optionally ties into the AjaxFileUpload component. The framework provide a single unified set of components and models that can allow the storage of attachments on your local filesystem, served through your webserver; on your local filesystem served through a custom request handler; in your database, served through a custom request handler; and on Amazon's S3 service, served directly from S3. The intent of the framework is to make it very simple to control how the attachments are stored and served by simple adjusting some configuration properties. It also has attachment viewer components. Save yourself some time, use ERAttachment. http://webobjects.mdimension.com/hudson/job/Wonder53/javadoc/er/ attachment/package-summary.html David On 23-Sep-09, at 9:24 AM, Tim Worman wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? Thanks for your help. Tim On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons% 40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/programmingosx %40mac.com This email sent to programming...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
On Sep 23, 2009, at 10:15 AM, Chuck Hill wrote: Hi Tim, On Sep 23, 2009, at 9:24 AM, Tim Worman wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. How does it present the converted files? It implements iText but at some point I will be moving to PDFKit. I present the text as a PDF in a new window. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. That might be an artifact of your database (adding extra info). It could also be that there is some encoding/re-encoding happening that is scrambling the contents of the file. Which database are you using? I'm using OpenBase and I suspect what you're saying is right. It does cause some worry though since I don't have the review portion working yet. :-) I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? That is what I have always done in the past. It _should_ be simple and straightforward. Chuck On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net This email sent to ch...@global-village.net -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. http://www.global-village.net/products/practical_webobjects ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
I'm going to try and do the same as I am doing with my other component and have these open in a new window. Tim On Sep 23, 2009, at 10:16 AM, John Kim Larson wrote: That's all I do. Are you embedding the file in the page or having the response download the file as an attachment? John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 11:24 AM, Tim Worman li...@thetimmy.com wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? Thanks for your help. Tim On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
On Sep 23, 2009, at 1:27 PM, Tim Worman wrote: On Sep 23, 2009, at 10:15 AM, Chuck Hill wrote: Hi Tim, On Sep 23, 2009, at 9:24 AM, Tim Worman wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. How does it present the converted files? It implements iText but at some point I will be moving to PDFKit. I present the text as a PDF in a new window. The same thing should work with the PDF in a database. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. That might be an artifact of your database (adding extra info). It could also be that there is some encoding/re-encoding happening that is scrambling the contents of the file. Which database are you using? I'm using OpenBase and I suspect what you're saying is right. It does cause some worry though since I don't have the review portion working yet. :-) You are certain it is a BLOB not a CLOB? How is the attribute modeled? Chuck I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? That is what I have always done in the past. It _should_ be simple and straightforward. Chuck On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net This email sent to ch...@global-village.net -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. http://www.global-village.net/products/practical_webobjects -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who
Re: saving pdf's to the database
Yeah, there is definitely data being stored. My only concern is that I don't have proof yet that I can read what I've written to the database. So, I was concerned but I expect that Chuck is right that the database probably manipulates file it stores. Tim On Sep 23, 2009, at 10:26 AM, John Kim Larson wrote: Here's another do'oh question: are you sure the data is making it to the db from the upload? John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 11:24 AM, Tim Worman li...@thetimmy.com wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? Thanks for your help. Tim On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: saving pdf's to the database
On Sep 23, 2009, at 1:41 PM, Chuck Hill wrote: On Sep 23, 2009, at 1:27 PM, Tim Worman wrote: On Sep 23, 2009, at 10:15 AM, Chuck Hill wrote: Hi Tim, On Sep 23, 2009, at 9:24 AM, Tim Worman wrote: John: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. How does it present the converted files? It implements iText but at some point I will be moving to PDFKit. I present the text as a PDF in a new window. The same thing should work with the PDF in a database. Right, but since it should already be a PDF, I don't need any translation or need for my iText implementation, correct? So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. That might be an artifact of your database (adding extra info). It could also be that there is some encoding/re-encoding happening that is scrambling the contents of the file. Which database are you using? I'm using OpenBase and I suspect what you're saying is right. It does cause some worry though since I don't have the review portion working yet. :-) You are certain it is a BLOB not a CLOB? How is the attribute modeled? I've modeled it as a blob, with the external type 'object.' OpenBase has a 'binary' type but it seems 'object' should be correct. I attached a screenshot. Tim Chuck I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? That is what I have always done in the past. It _should_ be simple and straightforward. Chuck On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net This email sent to ch...@global-village.net -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who
Re: saving pdf's to the database
On Sep 23, 2009, at 2:28 PM, Tim Worman wrote: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. How does it present the converted files? It implements iText but at some point I will be moving to PDFKit. I present the text as a PDF in a new window. The same thing should work with the PDF in a database. Right, but since it should already be a PDF, I don't need any translation or need for my iText implementation, correct? Yeah, just the present the text as a PDF in a new window part. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. That might be an artifact of your database (adding extra info). It could also be that there is some encoding/re-encoding happening that is scrambling the contents of the file. Which database are you using? I'm using OpenBase and I suspect what you're saying is right. It does cause some worry though since I don't have the review portion working yet. :-) You are certain it is a BLOB not a CLOB? How is the attribute modeled? I've modeled it as a blob, with the external type 'object.' OpenBase has a 'binary' type but it seems 'object' should be correct. I attached a screenshot. I don't think you did. :-) I am not sure which type is correct, or if both are. Chuck I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content-type. Am I on the right track? That is what I have always done in the past. It _should_ be simple and straightforward. Chuck On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects- d...@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net This email sent to ch...@global-village.net -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase
Re: saving pdf's to the database
On Sep 23, 2009, at 2:43 PM, Chuck Hill wrote: On Sep 23, 2009, at 2:28 PM, Tim Worman wrote: Thanks for the response. In our case the files will always be pdf since we are requiring that as the format of the originating user's submission. I can definitely see the file size concern if the pdf is a big ole glorified image. Hopefully, most of the users will produce their pdf's by printing to pdf in mac os x (or acrobat on Windoze). I already had a component class that takes plain text blobs (logs) from the database, converts them to pdf, and presents them in a browser window. That class doesn't work on the blobs where the file was originated as pdf. How does it present the converted files? It implements iText but at some point I will be moving to PDFKit. I present the text as a PDF in a new window. The same thing should work with the PDF in a database. Right, but since it should already be a PDF, I don't need any translation or need for my iText implementation, correct? Yeah, just the present the text as a PDF in a new window part. So, I got concerned that maybe I was missing something saving the NSData. My database saves blobs to the file system so I tried reading one as a pdf and couldn't. Hence my question. That might be an artifact of your database (adding extra info). It could also be that there is some encoding/re-encoding happening that is scrambling the contents of the file. Which database are you using? I'm using OpenBase and I suspect what you're saying is right. It does cause some worry though since I don't have the review portion working yet. :-) You are certain it is a BLOB not a CLOB? How is the attribute modeled? I've modeled it as a blob, with the external type 'object.' OpenBase has a 'binary' type but it seems 'object' should be correct. I attached a screenshot. I don't think you did. :-) I am not sure which type is correct, or if both are. Chuck Damnit, I hate it when you're right even more than normal. Screenshot attached. inline: Screen shot 2009-09-23 at 2.24.24 PM.png Tim I've assumed that I should just be able create a response that simply returns my NSData object and set the proper content- type. Am I on the right track? That is what I have always done in the past. It _should_ be simple and straightforward. Chuck On Sep 23, 2009, at 9:02 AM, John Kim Larson wrote: Hi Tim, We do this all the time with receiving reports, prints, etc. Since the component I use for upload handles any file type ( Word, images, PDF) I keep track of the file extension that the file was uploaded with in an attribute of my File entity. I then use that information to reconstitute the mime type when either embedding or downloading the file. There's not too much magic there, just a bunch of if elses to get the mime type from the extension. I can try to help you if that isn't enough info. Another gotcha is to make sure that your file size doesn't exceed the blob capacity. PDFs from text are fine, but if someone uploads a high res scanned file as a PDF, you will get an error either upon committing the change or upon trying to view the file. JAL John A. Larson President Precision Instruments, Inc. Ph: 847-824-4194 Fax: 866-240-7104 Sent from my iPhone On Sep 23, 2009, at 10:45 AM, Tim Worman li...@thetimmy.com wrote: WO'ers: I am writing an application where users can upload pdf files - which my app saves to the database. I also need to have mechanisms in place where a reviewer can browse the documents that have been uploaded. The upload and saving to the database seems to be working. This is modeled as 'blob' and the class type is 'NSData.' The files are uploaded via AjaxFileUpload. I have saved plain text files to the database before but I'm concerned that there is something more I need to do to save the pdf files. Are there special considerations for maintaining the mime type, continuity, etc. of these files before I save them as NSData to the database? Also, I am not sure how to present the files to the reviewer. I have converted text to pdf for viewing before but I'm stuck on reconstituting a pdf for display. If anyone has any pointers or code examples that would really help me as I'm under a serious time crunch. Tim UCLA GSEIS ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com ) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/the_larsons%40mac.com This email sent to the_lars...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription:
Re: WO WebServices Java 1.6
On 24/09/2009, at 12:02 AM, Jarda Hanuš wrote: we are developping a web service frontend to a wo application and we try to implement some security/authentication controls in it. However, when we try to access the SOAPEnvelope part of the ws message, we obtain this exception: java.lang.ClassCastException: com.sun.xml.internal.messaging.saaj.soap.ver1_1.Envelope1_1Impl cannot be cast to java.lang.String at org.apache.axis.SOAPPart.getAsString(SOAPPart.java:554) at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:688) at org.apache.axis.Message.getSOAPEnvelope(Message.java:435) What jars have you included? From some googling it seems that this exception can be caused by combination of Axis 1.4 and Java 1.6 - the default version of Java on Snow Leopard. So my questions are: - has anybody any experiences with using WebObjects WebServices with Java 1.6? Yes. (Though we deploy on FreeBSD, but that should be irrelevant) - did someone succeed in hacking some newer version of axis (Axis2) to work with WO 5.4.3? Didn't try. Still using axis 1.4 with relevant dependencies... http://mavenrepository.com/artifact/axis/axis/1.4 - should we try and hack our way ugly through, or is there some hope in a new WO release that will make it's WS capabilities compatible with Java 1.6? What if you target your compile for that particular framework for 1.5? with regards, -- Lachlan Deck ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Multi-Tenant Data Architecture
Hi Guido, Guido Neitzer wrote: On Sep 22, 2009, at 4:34 PM, Chuck Hill wrote: - some increase in RAM usage due to duplicated loading of code and JVM If you don't want to do that and are committed to doing this in one instance, the next best way is to tag the root object with the tenant. But you said separate databases, so that is ruled out. You mean data categorized by tenant? Yes. I did something like this a while ago and it was actually pretty simple to come up with a model that worked for the situation we had: - all (!) entities have a client (tenant?) relationship - this is set along with audit information in awakeFromInsertion (init) automatically as every user belongs to a client - the app automatically limits fetches with restricting qualifiers (D2W app) - if an object gets fetched and it's awakeFromFetch is called and the client of this object and the client of the current user don't match, it throws a fatal exception, the users session is logged (every single action), the stack trace is logged, and the session terminated That is a good idea to avoid undesirable access to data that don't belong to the corresponding tenant. - I don't use any raw row fetching at all We do for report generation. But we could create a mechanism for sanity checking (like the one in the awakeFromFetch) as soon as all data used in reports come from the same data source. Thanks for your comments and advices. Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Updated to 3.5 and now lots of html errors
Hi all,
I just updated to 3.5. It's very fast. I like it a lot (^_^) However,
I'm getting *lots* of red Xs in ERExtensions and ERDirectToWeb
regarding unclosed br hr ... that sort of thing. Now, for my
stuff, I like that... but for the wonder frameworks, some of those
things are correct because they are still using HTML doctype so it
would be invalid to change them to br/ etc. Is there any way to
quiet down eclipse with regard to these on a per project/framework
basis so I can keep them for my stuff, but disable them for ERD2W and
ERExt?
Also... I have been cheating with a //VALID notation that no longer
works. I have
CheckboxWrapper: WOGenericContainer {
// ** Because there's no elementName, this is an invisible
wrapper element.
elementID = wrapperElementID;
name = context.elementID;
formValues = selections;
}
Of course, this works fine, but it gives me a red X. The trick that
worked before was...
CheckboxWrapper //VALID
: WOGenericContainer {
That was a bit of overkill because it disabled validation on the whole
WOD, but it did work. Now, that's not working... so, any hints on
how to make my red Xs go away?
Thanks all,
Ramsey
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Re: Updated to 3.5 and now lots of html errors
I just updated to 3.5. It's very fast. I like it a lot (^_^)
However, I'm getting *lots* of red Xs in ERExtensions and
ERDirectToWeb regarding unclosed br hr ... that sort of thing.
Now, for my stuff, I like that... but for the wonder frameworks,
some of those things are correct because they are still using HTML
doctype so it would be invalid to change them to br/ etc. Is
there any way to quiet down eclipse with regard to these on a per
project/framework basis so I can keep them for my stuff, but disable
them for ERD2W and ERExt?
Look in your WOLips Development Preferences for your project and see
if Require Well-formed Templates is checked .. Uncheck it and clean
build if it is.
Also... I have been cheating with a //VALID notation that no longer
works. I have
CheckboxWrapper: WOGenericContainer {
// ** Because there's no elementName, this is an invisible
wrapper element.
elementID = wrapperElementID;
name = context.elementID;
formValues = selections;
}
Of course, this works fine, but it gives me a red X. The trick that
worked before was...
CheckboxWrapper //VALID
: WOGenericContainer {
That was a bit of overkill because it disabled validation on the
whole WOD, but it did work. Now, that's not working... so, any
hints on how to make my red Xs go away?
i'm amazed that worked before :) i didn't intentionally disable this,
but then i never really intentionally ENABLED it. Valid should
definitely not have disabled for the entire WOD -- are you sure it did
that? what red 'x' are you getting btw? that elementName is a required
binding? if it isn't, then we should remove it from the API
validation rules for WOGenericContainer.
ms ___
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Re: Multi-Tenant Data Architecture
Hi Lachlan, Lachlan Deck wrote: On 23/09/2009, at 8:46 AM, Henrique Prange wrote: Chuck Hill wrote: - problems / load on one tenant do not impact others - guaranteed that one tenant will not accidently see information from another This last one is exactly the reason why we can't have a shared database at all. This is what we do .. simply requires an auto injected and'd qualifier + relevant tables related to said tenant. That is also a good idea. :) - some increase in RAM usage due to duplicated loading of code and JVM If you don't want to do that and are committed to doing this in one instance, the next best way is to tag the root object with the tenant. But you said separate databases, so that is ruled out. You mean data categorized by tenant? The application already supports this kind of architecture. We deploy one application with more than one tenant using a shared database in very exceptional cases. But that is not the rule. In most cases we can't take the risk of providing wrong information for a customer. We've never had that problem - but I understand it's theoretically possible as is providing the wrong connection dictionary ;-) Yes. One tenant per instance with separate databases is the safer way. But has the higher maintenance cost. Every solution has pros and cons. As I said, I'm not in a hurry to implement this kind of architecture. But I would like to take decisions based on good arguments and the result of some experiments. Not because of a technological problem. As, in theory, EOF can support multiple databases in one application, I think it is worth making some tests in this direction. Anyway, I'm taking all your comments into consideration before I take the final decision. :) Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Multi-Tenant Data Architecture
Hi Cheong, Cheong Hee (Gmail) wrote: I read with great interest as I encountere the same situation some time ago. In practice (at least in my case), it worked to have the app run on separate EOF stacks accessing different database. So , it simplified the case to only have one instance in JavaMonitor for multi databases. Good to hear I'm no the only one trying to implement this kind of solution. When a session is created, you will need to ensure that all editing contexts created for that session use the correct EOObjectStoreCoordinator. You will also want to ensure that you don't use defaultAnything in your code (defaultEditingContext(), defaultModelGroup() etc.) as these are unlikey to return objects from the correct EOF stack. Caveat: this is theoretical, I don't have any experience doing this. I don't think that many people have done this, so you run the risk of finding bugs in seldom executed EOF code. My tests concurred so far. It worked as Chuck mentioned, never use defaultanything. Called OSC right at the session constructor to be safe. I'll try to follow this advices. Thank you. Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Multi-Tenant Data Architecture
Hi Chuck, Chuck Hill wrote: Not so easy when you have more than 20 different instances (and counting) running on JavaMonitor. :p 20 does not seem like that many to manage. Yeah. I'm worried about the future. 100+ instances can become a problem to manage. Cons: - more instances to administer That is our main concern. Today we have 20 instances, but this number is likely to increase considerably in near future. If it grows to 40, are you planning on having each instance host all 40? I'd look into EOF stack size if you are thinking of having 40 in one JVM and there is a significant amount of data per tenant. That might work out to a lot of RAM per instance and so few instances per machine. It is just something to keep in mind. You are right and I don't have the exact math for this problem. I believe one solution will not fit all situations. Some tenants will require an entire instance because of the amount of data. But most tenants will not require many resources. Of course, this is based on an empirical analysis. I still have to measure in different situations to determine these magical numbers (number of tenants per instance, required amount of RAM and etc). Writing a bug free multi-tenant application with shared data is time consuming and expensive. In the case of this specific application is also too risky. Also, a shared database make the backup/restore process very difficult. You can backup everything easily, but how to revert the data for a single tenant? The backup / restore is a good point. Managing many EOF stacks and ensuring that one tenant does not see another tenants information might be just as complex in either scenario. Yeah. Whatever solution we chose, I'm convinced it is not a trivial matter. Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Updated to 3.5 and now lots of html errors
On Sep 23, 2009, at 11:16 PM, Mike Schrag wrote:
I just updated to 3.5. It's very fast. I like it a lot (^_^)
However, I'm getting *lots* of red Xs in ERExtensions and
ERDirectToWeb regarding unclosed br hr ... that sort of thing.
Now, for my stuff, I like that... but for the wonder frameworks,
some of those things are correct because they are still using HTML
doctype so it would be invalid to change them to br/ etc. Is
there any way to quiet down eclipse with regard to these on a per
project/framework basis so I can keep them for my stuff, but
disable them for ERD2W and ERExt?
Look in your WOLips Development Preferences for your project and see
if Require Well-formed Templates is checked .. Uncheck it and
clean build if it is.
Ok, that appears to be doing the trick. I knew it had to be in there
somewhere (^_^)
Also... I have been cheating with a //VALID notation that no longer
works. I have
CheckboxWrapper: WOGenericContainer {
// ** Because there's no elementName, this is an invisible
wrapper element.
elementID = wrapperElementID;
name = context.elementID;
formValues = selections;
}
Of course, this works fine, but it gives me a red X. The trick
that worked before was...
CheckboxWrapper //VALID
: WOGenericContainer {
That was a bit of overkill because it disabled validation on the
whole WOD, but it did work. Now, that's not working... so, any
hints on how to make my red Xs go away?
i'm amazed that worked before :) i didn't intentionally disable
this, but then i never really intentionally ENABLED it. Valid should
definitely not have disabled for the entire WOD -- are you sure it
did that? what red 'x' are you getting btw? that elementName is a
required binding? if it isn't, then we should remove it from the
API validation rules for WOGenericContainer.
ms
Oh yes, I remember quite distinctly that it would nuke the validation
for the whole WOD (^_^) But that was ok, because I got everything
else right and never touched it again after I put the //VALID on it.
And yeah, the red X is regarding the missing elementName binding. I
was surprised, but WOGenericContainer works without it. And in this
case, it is the only way I can produce valid XHTML with this
component. Those bindings are copied from Apple sample code, comment
and all, located at
/Developer/Examples/JavaWebObjects/Frameworks/WOComponentElements/wo-
resources/Resources/WXCheckBoxList.wo/WXCheckBoxList.wod
Ramsey
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