Re: velocity.properties
Hi Jecki, If you are looking for all the properties that can be configured in velocity.properties file, you can get that sample velocity.properties file in you velocity.jar file. Anyhow here are the contents what I have in my velocity.properties which came in the jar. #--begin-- # # These are the default properties for the # Velocity Runtime. These values are used when # Runtime.init() is called, and when Runtime.init(properties) # fails to find the specificed properties file. # # # R U N T I M E L O G # # # default LogSystem to use: default: AvalonLogSystem # runtime.log.logsystem.class = org.apache.velocity.runtime.log.AvalonLogSystem,org.apache.velocity.runtime.log.SimpleLog4JLogSystem #--- # This is the location of the Velocity Runtime log. # runtime.log = velocity.log # # This controls if Runtime.error(), info() and warn() messages include the # whole stack trace. The last property controls whether invalid references # are logged. # runtime.log.error.stacktrace = false runtime.log.warn.stacktrace = false runtime.log.info.stacktrace = false runtime.log.invalid.reference = true # # Configuration for the Log4JLogSystem. # You must define the runtime.log.logsystem.class property to be: # org.apache.velocity.runtime.log.Log4JLogSystem # # You must also include Log4J's .jar files into your classpath. They are # included with the Velocity distribution in the build/lib directory. # # There are several different options that you can configure. # Uncomment the ones that you want and also define their settings. # #runtime.log.logsystem.log4j.pattern=%d - %m%n #runtime.log.logsystem.log4j.file.size=10 #runtime.log.logsystem.log4j.file.backups=1 #runtime.log.logsystem.log4j.syslogd.host=my.syslog.server.com #runtime.log.logsystem.log4j.syslogd.facility=LOG_DAEMON #runtime.log.logsystem.log4j.remote.host=my.remote.server.com #runtime.log.logsystem.log4j.remote.port=1099 #runtime.log.logsystem.log4j.email.server=localhost [EMAIL PROTECTED] [EMAIL PROTECTED] #runtime.log.logsystem.log4j.email.subject=Velocity Error Report #runtime.log.logsystem.log4j.email.buffer.size=512 # # T E M P L A T E E N C O D I N G # input.encoding=ISO-8859-1 output.encoding=ISO-8859-1 # # F O R E A C H P R O P E R T I E S # # These properties control how the counter is accessed in the #foreach # directive. By default the reference $velocityCount will be available # in the body of the #foreach directive. The default starting value # for this reference is 1. # directive.foreach.counter.name = velocityCount directive.foreach.counter.initial.value = 1 # # I N C L U D E P R O P E R T I E S # # These are the properties that governed the way #include'd content # is governed. # directive.include.output.errormsg.start = !-- include error : directive.include.output.errormsg.end = see error log -- # # P A R S E P R O P E R T I E S # directive.parse.max.depth = 10 # # T E M P L A T E L O A D E R S # # # # resource.loader = file file.resource.loader.description = Velocity File Resource Loader
Creating objects in template using new keyword
Hi All, I would like to create a object reference in template using new keyword like what we do in java String obj = new String() I need to put RenderTool instance in context and use it to fix some problem. I know that i can put it to context from the java code where the template is being called or using toolbox.xml But as my application is standalone and in production and i don't want to change the java code to fix the issue, i want to handle it in template. And also is there any way to get the reference to the context in templates when Velocity.mergeTemplate() is being used, though the context reference is not kept in context. Is it possible to achieve this ? Any suggestions are most welcome. -- With Regards, Ravikanth.L - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Creating objects in template using new keyword
Hi Shinobu, Thank you very much for the information. It was a simple java code change only to add two new instances to the context from the java code, but i wanted to avoid java code change. -- With Regards, Ravikanth.L - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
while loop
Hi All, Like #foreach does velocity has support for while loop. I am supposed to use a custom api which is having methods like hasMoreSubElements(), nextSubElement() etc... on given element. Usually we will use while loop for these scenarios. Let me know if we can use #while etc...if so a small sample will be of great help. -- With Regards, Ravikanth.L
Problems with recurse method exception of RenderTool
Hi All, Can anyone let me know when will the recurse method of RenderTool throws exception. Means what are the scenarios for the recurse method to throw an exception. I am dynamically creating variables and assigning them values in the template like #foreach($subElementName in $elementSet.keySet()) #* *##set($subElement = $elementSet.get($subElementName)) #* *##foreach( $value in $subElement.getValueList())## #* *##set($theValue = $!value.getValue())## #* *#$render.recurse($ctx, '\#set($$subElementName = $theValue)')## #* *##end## #end## It was working without any problem in the production environment as wellbut now started giving problems. Now i am getting the error in the log as: Method recurse threw exception for reference $render in template transora_cin_catalog.vm at [22,27] Is it a problem of null values for $subElementName and $theValue? i tried with null value for variable name and as well as value with a similar example, it didn't give this error, only got not a valid reference in the log for my expected variable. Any suggestions will be of great help. -- With Regards, Ravikanth.L
Re: Hacking Velocity
Hi Will, I was trying the following example (to create a custom class instance dynamically in the template) given in the slides ## Let's do some mischief and instantiate an arbitrary class #set ($fileclass = $obj.Class.forName(java.io.File)) #set ($stringclass = $obj.Class.forName(java.lang.String)) #set ($paramlist = [..]) #set ($paramarray = $paramlist.toArray()) #set ($constructors = $fileclass.constructors) ## Call the constructor java.io.File(String) #foreach ($c in $constructors) #if ($c.toString() == public java.io.File(java.lang.String)) #set ($file = $c.newInstance($paramarray)) $file #end #end where $obj is any object instance. I am neither getting the output nor its giving any error in the velocity log. I am using default introspector, not changed anything. Does the deault introspector allows to create newinstance() etc from template? Am i missing anything else otherwise? Regards, Ravi On 12/7/04, Will Glass-Husain [EMAIL PROTECTED] wrote: Thanks for the pointer to my slides from ApacheCon (Hacking Velocity). For the record there are slides and sample code available on these topics: -- VelocityViewServlet -- Custom directives -- Custom resource loaders -- Event handlers -- Custom introspector -- Modifying Velocity syntax with JavaCC I've put the material on the Wiki for more general availability. Hope this is useful to other users. http://wiki.apache.org/jakarta-velocity/HackingVelocity Best, WILL - Original Message - From: Shinobu Kawai [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org Sent: Monday, December 06, 2004 2:12 PM Subject: Re: [FAQ] How do you check for null? Hi Henning, With the slides from Will's talk @ ApacheCon, you should be able to add a new statement to the VTL so you can do #ifnull($car.fuel) Hey, thanks for the idea! Approach #6 : use a custom directive. :) I'll look into that. Best regards, -- Shinobu Kawai -- Shinobu Kawai [EMAIL PROTECTED]
Valid characters for value in VTL - urgent
Hi All, I would like to know the valid characters that we can use for a value in VTL. I tried the following #set($var = My string with special chars##) It throws ParseErrorrException as: org.apache.velocity.exception.ParseErrorException: Lexical error: org.apache.velocity.runtime.parser.TokenMgrError: Lexical error at line 1, column 19. Encountered: EOF after : . It didn't complain if i use single #. So, i would like to know what all character combinations will result in ParserErrorException without any escaping done, bcoz we are reading variable names and their values from an XML file and constructing variables dynamically using RenderTool. Tried to find in User docs but no luck. Can anyone pls let me know the list or point me to the link where i can get the details. -- With Regards, Ravikanth.L
Re: Valid characters for value in VTL - urgent
Hi Christoph, Thanks a lot for replying back. As far as the suggestions you gave, i can't use failsafe escaping apporoach as i am not hardcoding the values in the template. As i said earlier, we are having an xml file where in we define element name and its value as element name=myvar valueUser can enter what ever text they want here/value /element And we are reading the xml and dynamically creating the variables and associating them with the values to the context using renderTool as below in template $render.recurse($ctx, '\#set($$nameObj = $theValue)' ) where $nameObj contains the variable name and the $theValue contains the text between value and /value. And regarding using single quote approach, as the recurse has to evaluate my #set, i think the syntax i have given is correct. Tried changing the syntax also by giving single qoutes with escaping for $theValue, but getting some parser errors. So, if i can get a list of characters which will create problems in #set directive like ##, newline etc... i can ask the users not to use them or try to escape them in the xml itself Any suggetions will be of great help. -- With Regards, Ravikanth.L On 9/19/05, Christoph Reck [EMAIL PROTECTED] wrote: Hi, Ravikanth L wrote: Hi All, I would like to know the valid characters that we can use for a value in VTL. I tried the following #set($var = My string with special chars##) Velocity defines a line-comment starting with the characters ## Also note that Velocity offers a feature called string interpolation, where within a directive (#if and #set) the references inside double quotes are evaluated and inserted. You have detected a parser bug, where it chokes on the fact that the EOL-comment is not compatible with the interpolation. Please consider using single quotes or using a failsafe escaping: #set( $var = 'My string with special chars##' ) #set( $H = '#' ) #set( $var = My string with special chars$H$H ) I am aware of some issues that are related to the problem (maybe you can vote on them): http://issues.apache.org/jira/browse/VELOCITY-126 String containing '##' is treated as unterminated String http://issues.apache.org/jira/browse/VELOCITY-355 lost '#'s inside #literal()/#end http://issues.apache.org/jira/browse/VELOCITY-272 EOF exception when last line is commented out and has no new line at end http://issues.apache.org/jira/browse/VELOCITY-253 Enhance whitespace gobbling - involves parser syntax simplification Hope this helped, Christoph It throws ParseErrorrException as: org.apache.velocity.exception.ParseErrorException: Lexical error: org.apache.velocity.runtime.parser.TokenMgrError: Lexical error at line 1, column 19. Encountered: EOF after : . It didn't complain if i use single #. So, i would like to know what all character combinations will result in ParserErrorException without any escaping done, bcoz we are reading variable names and their values from an XML file and constructing variables dynamically using RenderTool. Tried to find in User docs but no luck. Can anyone pls let me know the list or point me to the link where i can get the details. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Valid characters for value in VTL - urgent
Hi Christoph, Thanks a lot for replying back. Its a good idea to filter/escape all suspicious characters, i will follow your suggestion. Anyhow i am going to vote for the bugs related to it. Thanks, With Regards, Ravi On 9/19/05, Christoph Reck [EMAIL PROTECTED] wrote: Hi Ravikanth, there is no such list of unallowed characthers in a string. Only the velocity syntax exists. Therefore up to Velocity 1.4, a string may not contain the quote character itself and a new-line character. Additionally you need care with the other symbols: \ $ # which have a meaning to velocity during string interpolation - plus some minor bugs (see below or look at http://issues.apache.org/jira ). With the 1.5 version coming up (nightly snapshot), to my knowledge, you will be able to have multi-line strings, quotes witin quoted strings (by doubling the quote character! - like in excel CSV exports). In your use-case you might need a filter (like a simple reg-ex replacing) to filter out things that make problems in velocity before you forward things to your render recursion, example: #set( $str = $theValue.replaceall(##\), $H$H)) ) $render.recurse( $ctx, '\#set($$nameObj = $str)' ) Maybe replace all #s altogehter , if you are not using macros or directives in your recursion evaluation. If you provide patches or vote on the below stated issues, there are chances that the 1.5 final will not choke on the ## within a string. (Please be aware that Apache Jakarta projects are done on a free will basis and contributions are welcome. People who have an itch are kindly asked to help on solutions.) Cheers, Christoph
Re: Disable echo in VTL
Hi, Use as below #foreach($elem in $rootelem.getChildren())## #set ($elemname = $elem.getName())## #set( $sometext = $userprops.get($elemname) )## #set($tempVariable = $elem.setText( $sometext ))## #end## to ignore the return value from setText, just pretend as assigning to a variable ( its the way i used in my templates). If anyone has a better way to ignore such unneccesary return values from printing, pls let me know. For unnecessary new lines, in your for loop, there will be new lines each after a statement. So if you put ## i.e comment as EOL, it will ignore those new lines. There are lot of bugs reported for formatting and new lines in velocity. Please go through the forum mails for further reference. Regards, Ravi On 2/7/06, Anagha [EMAIL PROTECTED] wrote: Hi, I'm building the XML in the VTL. At some point I retrieve the value of an element and set its text as $elem.setText( $sometext ) #foreach($elem in $rootelem.getChildren()) #set ($elemname = $elem.getName()) #set( $sometext = $userprops.get($elemname) ) $elem.setText( $sometext ) #end In the output I get each element printed as --- [Element: serviceName/] where serviceName is the the element name. This happens for all the elements in the for loop. I want to disable this output on the console/file which comes from setText I tried : VelocityEngine ve = new VelocityEngine(); ve.setProperty(VelocityEngine.VM_MESSAGES_ON, false); But still the elements are printed which is not desired. Also I get a lot of new lines in the output which I want to disable. Any pointers? -- Thanks Regards, Anagha
