Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Bang Pham Huu]

I've found the *Big Surprise* which comes from my side. What I thought
is an old database (generated by java application using BaseX library
version 7.3.1) is actually an updated database by java application using
BaseX library version 8.6.7.

This data for some reasons has missing data (maybe someone removed them)
and when I tried to copy this database to the java application using
BaseX library version 7.3.1 (I thought it can open this database and
query normally), but actually, it cannot read and instead it drop this
database and create a new one with default data.

That causes the difference between version 8.6.7 and 7.3.1 in my first
message (one is a database with missing data and one is a newly created
database).  I've noticed that after I tried to use BaseX GUI jar
(version < 8.6.1) to open this database and it said "The database format
has changed; please use a newer version" which showed that I don't have
a database in version 7.3.1 but much higher than it.

Thanks for all your support :-), this helped me to learn more about BaseX.

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Michael Seiferle]

Hi Bang,

If you export a database its contents will be written to the folder given as an 
argument to the EXPORT command:

EXPORT [path]
> Exports all documents in the database to the specified file path


The `basex.*`-files you are seeing in your data folder are database files.
This is what exporting a database might look like: 
https://asciinema.org/a/QzLcXX93nJIUaOAcjfp94rOOQ 


Step 1: put your database in the `data/${database-name}` folder 
Step 2: OPEN ${database-name}
Step 3: EXPORT ${path}
Step 4: find your (XML)-files in ${path}

(Replace ${foo} with the actual names).

Apart from that http://docs.basex.org/wiki/Databases 
 might be a good read =) 

Best
Michael




> Am 02.02.2018 um 14:03 schrieb Bang Pham Huu :
> 
> Yes, I opened the document
> (http://files.basex.org/releases/7.3/BaseX73.pdf) and it said "EXPORT
> writes all resources to the specified target directory • GUI: Go to
> Database → Export, choose the target directory and press OK".
> 
> But as the BaseX GUI tool cannot open .basex file as database (that is
> why I asked you by listing all the files I have) so the export button in
> drop down database menu is disable.
> 
> Thanks,
> 
> 
> On 02/02/2018 01:56 PM, Christian Grün wrote:
>> Have you found and opened the documentation PDF for BaseX 7.3? Looking
>> for the term "export" should give you some hints.
>> 
>> Best,
>> Christian
>> 
>> 
>> 
>> On Fri, Feb 2, 2018 at 1:36 PM, Bang Pham Huu
>>  wrote:
>>> Hi Christian,
>>> 
>>> I'd do as your suggestion, but I'm stuck with how to export old database
>>> to XML file. I only have these files (no XML):
>>> 
>>> atv.basex   atvr.basex  tbl.basex   txt.basex   txtr.basex
>>> atvl.basex  inf.basex   tbli.basex  txtl.basex
>>> 
>>> and from your link, I tried to download BaseX GUI application
>>> http://files.basex.org/releases/7.3/BaseX73.jar. But this tool seems can
>>> open from XML file only. How can I open these .basex file and convert
>>> to  a XML file?
>>> 
>>> Thanks,
>>> 
>>> 
>>> On 02/02/2018 12:55 PM, Christian Grün wrote:
 Hi Bang,
 
 The general answer on your initial question: BaseX is
 backward-compatible. Older databases can be opened and queried with
 newer versions of BaseX.
 
 This seems to conflict with the experiences you made. But I agree with
 Dirk: It’s difficult to understand what is going wrong in your testing
 environment. It’s not possible to tell why a query should yield
 results that is not contained in the data you provide.
 
 Maybe you could try to proceed step by step and give feedback:
 
 1. Export the database with BaseX 7.3.1. Note that you cannot use all
 the BaseX 8.x syntax with older versions of the software. Please check
 out our documentation history to learn how to proceed [1].
 2. Export the same database with BaseX 8.x.
 3. Compare the resulting output.
 
 If the output of BaseX 7 and 8 differs, then:
 
 4. Ensure that your database directories are really identical.
 5. Report back to us which output you believe is correct: If the
 output of BaseX 7.x is wrong, it may even be due to a bug in the old
 version, or due to some corrupt data that can successfully restored by
 BaseX 8. If the output of BaseX 8.x is wrong, tell us what is missing.
 
 If the output is identical, then:
 
 4. Create a new database from this data with BaseX 8.x.
 5. Run your query and compare the results.
 
 Best,
 Christian
 
 [1] http://docs.basex.org/wiki/Documentation
 
 
 
 
 On Fri, Feb 2, 2018 at 11:48 AM, Bang Pham Huu
  wrote:
> What I tried to say is: I'm using input (old database) which has lot of
> modifications since version 7.3.1 and I could use this database for both
> applications (BaseX 8.6.7 and BaseX 7.3.1 on different systems). But
> application in 8.6.7 can export database (with some missing data),
> application in 7.3.1 cannot export database (error).
> 
> If it is hard to understand, sorry about it. I shouldn't have asked this
> question if one database is queried with same queries on both version 
> BaseX
> 8.6.7 and BaseX 7.3.1 could return different results.
> 
> So, now, actually I couldn't provide you a valid test input ("Your input 
> XML
> (using BaseX 8.6.7)") because as you saw that in exported db from an
> application using BaseX 8.6.7 on this olddatabase, the data is missing and
> you questioned about it.
> 
> "The expected result and how it differs from what you expect", I'd say it
> should be the same from application using BaseX version 7.3.1 as my first
> email (it can be replaced from "\n" to " ", it is ok).
> 
> I asked because I just want to 

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Christian Grün]

Hi Bang, you might need to spend some more time on BaseX itself. As it
would take too much time to give you all relevant information here on
the list, I recommend you to begin with the Getting Started section in
the documentation, learn what the database directory is, where it is
located in the downloaded ZIP distribution and so on and so forth.



On Fri, Feb 2, 2018 at 2:03 PM, Bang Pham Huu
 wrote:
> Yes, I opened the document
> (http://files.basex.org/releases/7.3/BaseX73.pdf) and it said "EXPORT
> writes all resources to the specified target directory • GUI: Go to
> Database → Export, choose the target directory and press OK".
>
> But as the BaseX GUI tool cannot open .basex file as database (that is
> why I asked you by listing all the files I have) so the export button in
> drop down database menu is disable.
>
> Thanks,
>
>
> On 02/02/2018 01:56 PM, Christian Grün wrote:
>> Have you found and opened the documentation PDF for BaseX 7.3? Looking
>> for the term "export" should give you some hints.
>>
>> Best,
>> Christian
>>
>>
>>
>> On Fri, Feb 2, 2018 at 1:36 PM, Bang Pham Huu
>>  wrote:
>>> Hi Christian,
>>>
>>> I'd do as your suggestion, but I'm stuck with how to export old database
>>> to XML file. I only have these files (no XML):
>>>
>>> atv.basex   atvr.basex  tbl.basex   txt.basex   txtr.basex
>>> atvl.basex  inf.basex   tbli.basex  txtl.basex
>>>
>>> and from your link, I tried to download BaseX GUI application
>>> http://files.basex.org/releases/7.3/BaseX73.jar. But this tool seems can
>>> open from XML file only. How can I open these .basex file and convert
>>> to  a XML file?
>>>
>>> Thanks,
>>>
>>>
>>> On 02/02/2018 12:55 PM, Christian Grün wrote:
 Hi Bang,

 The general answer on your initial question: BaseX is
 backward-compatible. Older databases can be opened and queried with
 newer versions of BaseX.

 This seems to conflict with the experiences you made. But I agree with
 Dirk: It’s difficult to understand what is going wrong in your testing
 environment. It’s not possible to tell why a query should yield
 results that is not contained in the data you provide.

 Maybe you could try to proceed step by step and give feedback:

 1. Export the database with BaseX 7.3.1. Note that you cannot use all
 the BaseX 8.x syntax with older versions of the software. Please check
 out our documentation history to learn how to proceed [1].
 2. Export the same database with BaseX 8.x.
 3. Compare the resulting output.

 If the output of BaseX 7 and 8 differs, then:

 4. Ensure that your database directories are really identical.
 5. Report back to us which output you believe is correct: If the
 output of BaseX 7.x is wrong, it may even be due to a bug in the old
 version, or due to some corrupt data that can successfully restored by
 BaseX 8. If the output of BaseX 8.x is wrong, tell us what is missing.

 If the output is identical, then:

 4. Create a new database from this data with BaseX 8.x.
 5. Run your query and compare the results.

 Best,
 Christian

 [1] http://docs.basex.org/wiki/Documentation




 On Fri, Feb 2, 2018 at 11:48 AM, Bang Pham Huu
  wrote:
> What I tried to say is: I'm using input (old database) which has lot of
> modifications since version 7.3.1 and I could use this database for both
> applications (BaseX 8.6.7 and BaseX 7.3.1 on different systems). But
> application in 8.6.7 can export database (with some missing data),
> application in 7.3.1 cannot export database (error).
>
> If it is hard to understand, sorry about it. I shouldn't have asked this
> question if one database is queried with same queries on both version 
> BaseX
> 8.6.7 and BaseX 7.3.1 could return different results.
>
> So, now, actually I couldn't provide you a valid test input ("Your input 
> XML
> (using BaseX 8.6.7)") because as you saw that in exported db from an
> application using BaseX 8.6.7 on this olddatabase, the data is missing and
> you questioned about it.
>
> "The expected result and how it differs from what you expect", I'd say it
> should be the same from application using BaseX version 7.3.1 as my first
> email (it can be replaced from "\n" to " ", it is ok).
>
> I asked because I just want to confirm there was no big change from
> application using BaseX version 7.3.1 to application using BaseX version
> 8.6.7 on old database. But the outputs are different that got me confused.
>
> Thanks,
>
>
> On 02/02/2018 11:35 AM, Kirsten, Dirk wrote:
>
> Now I am very confused: What does “BaseX database version 7.3.1 (old
> database) via Java application with BaseX version 8.6.7.” even mean? How 
> can

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Bang Pham Huu]

Yes, I opened the document
(http://files.basex.org/releases/7.3/BaseX73.pdf) and it said "EXPORT
writes all resources to the specified target directory • GUI: Go to
Database → Export, choose the target directory and press OK".

But as the BaseX GUI tool cannot open .basex file as database (that is
why I asked you by listing all the files I have) so the export button in
drop down database menu is disable.

Thanks,


On 02/02/2018 01:56 PM, Christian Grün wrote:
> Have you found and opened the documentation PDF for BaseX 7.3? Looking
> for the term "export" should give you some hints.
>
> Best,
> Christian
>
>
>
> On Fri, Feb 2, 2018 at 1:36 PM, Bang Pham Huu
>  wrote:
>> Hi Christian,
>>
>> I'd do as your suggestion, but I'm stuck with how to export old database
>> to XML file. I only have these files (no XML):
>>
>> atv.basex   atvr.basex  tbl.basex   txt.basex   txtr.basex
>> atvl.basex  inf.basex   tbli.basex  txtl.basex
>>
>> and from your link, I tried to download BaseX GUI application
>> http://files.basex.org/releases/7.3/BaseX73.jar. But this tool seems can
>> open from XML file only. How can I open these .basex file and convert
>> to  a XML file?
>>
>> Thanks,
>>
>>
>> On 02/02/2018 12:55 PM, Christian Grün wrote:
>>> Hi Bang,
>>>
>>> The general answer on your initial question: BaseX is
>>> backward-compatible. Older databases can be opened and queried with
>>> newer versions of BaseX.
>>>
>>> This seems to conflict with the experiences you made. But I agree with
>>> Dirk: It’s difficult to understand what is going wrong in your testing
>>> environment. It’s not possible to tell why a query should yield
>>> results that is not contained in the data you provide.
>>>
>>> Maybe you could try to proceed step by step and give feedback:
>>>
>>> 1. Export the database with BaseX 7.3.1. Note that you cannot use all
>>> the BaseX 8.x syntax with older versions of the software. Please check
>>> out our documentation history to learn how to proceed [1].
>>> 2. Export the same database with BaseX 8.x.
>>> 3. Compare the resulting output.
>>>
>>> If the output of BaseX 7 and 8 differs, then:
>>>
>>> 4. Ensure that your database directories are really identical.
>>> 5. Report back to us which output you believe is correct: If the
>>> output of BaseX 7.x is wrong, it may even be due to a bug in the old
>>> version, or due to some corrupt data that can successfully restored by
>>> BaseX 8. If the output of BaseX 8.x is wrong, tell us what is missing.
>>>
>>> If the output is identical, then:
>>>
>>> 4. Create a new database from this data with BaseX 8.x.
>>> 5. Run your query and compare the results.
>>>
>>> Best,
>>> Christian
>>>
>>> [1] http://docs.basex.org/wiki/Documentation
>>>
>>>
>>>
>>>
>>> On Fri, Feb 2, 2018 at 11:48 AM, Bang Pham Huu
>>>  wrote:
 What I tried to say is: I'm using input (old database) which has lot of
 modifications since version 7.3.1 and I could use this database for both
 applications (BaseX 8.6.7 and BaseX 7.3.1 on different systems). But
 application in 8.6.7 can export database (with some missing data),
 application in 7.3.1 cannot export database (error).

 If it is hard to understand, sorry about it. I shouldn't have asked this
 question if one database is queried with same queries on both version BaseX
 8.6.7 and BaseX 7.3.1 could return different results.

 So, now, actually I couldn't provide you a valid test input ("Your input 
 XML
 (using BaseX 8.6.7)") because as you saw that in exported db from an
 application using BaseX 8.6.7 on this olddatabase, the data is missing and
 you questioned about it.

 "The expected result and how it differs from what you expect", I'd say it
 should be the same from application using BaseX version 7.3.1 as my first
 email (it can be replaced from "\n" to " ", it is ok).

 I asked because I just want to confirm there was no big change from
 application using BaseX version 7.3.1 to application using BaseX version
 8.6.7 on old database. But the outputs are different that got me confused.

 Thanks,


 On 02/02/2018 11:35 AM, Kirsten, Dirk wrote:

 Now I am very confused: What does “BaseX database version 7.3.1 (old
 database) via Java application with BaseX version 8.6.7.” even mean? How 
 can
 you access a newer BaseX version with some older BaseX version? Sorry, but
 this doesn’t make any sense to me.

 Could you please simple open the BaseX GUI and open your database and run
 the XQuery?



 Also, as I said I think it doesn’t make any sense to focus on this old
 database version anymore. Keep in mind that BaseX 7.3 is (I had to look 
 this
 up…) from June 2012 and hasn’t been supported for years.



 So, to move on from this, you need to provide the following (in general) 
 for
 

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Christian Grün]

Have you found and opened the documentation PDF for BaseX 7.3? Looking
for the term "export" should give you some hints.

Best,
Christian



On Fri, Feb 2, 2018 at 1:36 PM, Bang Pham Huu
 wrote:
> Hi Christian,
>
> I'd do as your suggestion, but I'm stuck with how to export old database
> to XML file. I only have these files (no XML):
>
> atv.basex   atvr.basex  tbl.basex   txt.basex   txtr.basex
> atvl.basex  inf.basex   tbli.basex  txtl.basex
>
> and from your link, I tried to download BaseX GUI application
> http://files.basex.org/releases/7.3/BaseX73.jar. But this tool seems can
> open from XML file only. How can I open these .basex file and convert
> to  a XML file?
>
> Thanks,
>
>
> On 02/02/2018 12:55 PM, Christian Grün wrote:
>> Hi Bang,
>>
>> The general answer on your initial question: BaseX is
>> backward-compatible. Older databases can be opened and queried with
>> newer versions of BaseX.
>>
>> This seems to conflict with the experiences you made. But I agree with
>> Dirk: It’s difficult to understand what is going wrong in your testing
>> environment. It’s not possible to tell why a query should yield
>> results that is not contained in the data you provide.
>>
>> Maybe you could try to proceed step by step and give feedback:
>>
>> 1. Export the database with BaseX 7.3.1. Note that you cannot use all
>> the BaseX 8.x syntax with older versions of the software. Please check
>> out our documentation history to learn how to proceed [1].
>> 2. Export the same database with BaseX 8.x.
>> 3. Compare the resulting output.
>>
>> If the output of BaseX 7 and 8 differs, then:
>>
>> 4. Ensure that your database directories are really identical.
>> 5. Report back to us which output you believe is correct: If the
>> output of BaseX 7.x is wrong, it may even be due to a bug in the old
>> version, or due to some corrupt data that can successfully restored by
>> BaseX 8. If the output of BaseX 8.x is wrong, tell us what is missing.
>>
>> If the output is identical, then:
>>
>> 4. Create a new database from this data with BaseX 8.x.
>> 5. Run your query and compare the results.
>>
>> Best,
>> Christian
>>
>> [1] http://docs.basex.org/wiki/Documentation
>>
>>
>>
>>
>> On Fri, Feb 2, 2018 at 11:48 AM, Bang Pham Huu
>>  wrote:
>>> What I tried to say is: I'm using input (old database) which has lot of
>>> modifications since version 7.3.1 and I could use this database for both
>>> applications (BaseX 8.6.7 and BaseX 7.3.1 on different systems). But
>>> application in 8.6.7 can export database (with some missing data),
>>> application in 7.3.1 cannot export database (error).
>>>
>>> If it is hard to understand, sorry about it. I shouldn't have asked this
>>> question if one database is queried with same queries on both version BaseX
>>> 8.6.7 and BaseX 7.3.1 could return different results.
>>>
>>> So, now, actually I couldn't provide you a valid test input ("Your input XML
>>> (using BaseX 8.6.7)") because as you saw that in exported db from an
>>> application using BaseX 8.6.7 on this olddatabase, the data is missing and
>>> you questioned about it.
>>>
>>> "The expected result and how it differs from what you expect", I'd say it
>>> should be the same from application using BaseX version 7.3.1 as my first
>>> email (it can be replaced from "\n" to " ", it is ok).
>>>
>>> I asked because I just want to confirm there was no big change from
>>> application using BaseX version 7.3.1 to application using BaseX version
>>> 8.6.7 on old database. But the outputs are different that got me confused.
>>>
>>> Thanks,
>>>
>>>
>>> On 02/02/2018 11:35 AM, Kirsten, Dirk wrote:
>>>
>>> Now I am very confused: What does “BaseX database version 7.3.1 (old
>>> database) via Java application with BaseX version 8.6.7.” even mean? How can
>>> you access a newer BaseX version with some older BaseX version? Sorry, but
>>> this doesn’t make any sense to me.
>>>
>>> Could you please simple open the BaseX GUI and open your database and run
>>> the XQuery?
>>>
>>>
>>>
>>> Also, as I said I think it doesn’t make any sense to focus on this old
>>> database version anymore. Keep in mind that BaseX 7.3 is (I had to look this
>>> up…) from June 2012 and hasn’t been supported for years.
>>>
>>>
>>>
>>> So, to move on from this, you need to provide the following (in general) for
>>> people to be able to help you:
>>>
>>>
>>>
>>> -  Your input XML (using BaseX 8.6.7)
>>>
>>> -  You query (you already showed this, so not needed anymore)
>>>
>>> -  The actual result (you already showed this, so nothing to do)
>>>
>>> -  The expected result and how it differs from what you expect
>>>
>>>
>>>
>>> Cheers
>>>
>>> Dirk
>>>
>>>
>>>
>>> Von: Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
>>> Gesendet: Freitag, 2. Februar 2018 11:19
>>> An: Kirsten, Dirk ;
>>> basex-talk@mailman.uni-konstanz.de
>>> Betreff: Re: AW: AW: [basex-talk] Big Surprise 

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Bang Pham Huu]

Hi Christian,

I'd do as your suggestion, but I'm stuck with how to export old database
to XML file. I only have these files (no XML):

atv.basex   atvr.basex  tbl.basex   txt.basex   txtr.basex
atvl.basex  inf.basex   tbli.basex  txtl.basex

and from your link, I tried to download BaseX GUI application
http://files.basex.org/releases/7.3/BaseX73.jar. But this tool seems can
open from XML file only. How can I open these .basex file and convert
to  a XML file?

Thanks,


On 02/02/2018 12:55 PM, Christian Grün wrote:
> Hi Bang,
>
> The general answer on your initial question: BaseX is
> backward-compatible. Older databases can be opened and queried with
> newer versions of BaseX.
>
> This seems to conflict with the experiences you made. But I agree with
> Dirk: It’s difficult to understand what is going wrong in your testing
> environment. It’s not possible to tell why a query should yield
> results that is not contained in the data you provide.
>
> Maybe you could try to proceed step by step and give feedback:
>
> 1. Export the database with BaseX 7.3.1. Note that you cannot use all
> the BaseX 8.x syntax with older versions of the software. Please check
> out our documentation history to learn how to proceed [1].
> 2. Export the same database with BaseX 8.x.
> 3. Compare the resulting output.
>
> If the output of BaseX 7 and 8 differs, then:
>
> 4. Ensure that your database directories are really identical.
> 5. Report back to us which output you believe is correct: If the
> output of BaseX 7.x is wrong, it may even be due to a bug in the old
> version, or due to some corrupt data that can successfully restored by
> BaseX 8. If the output of BaseX 8.x is wrong, tell us what is missing.
>
> If the output is identical, then:
>
> 4. Create a new database from this data with BaseX 8.x.
> 5. Run your query and compare the results.
>
> Best,
> Christian
>
> [1] http://docs.basex.org/wiki/Documentation
>
>
>
>
> On Fri, Feb 2, 2018 at 11:48 AM, Bang Pham Huu
>  wrote:
>> What I tried to say is: I'm using input (old database) which has lot of
>> modifications since version 7.3.1 and I could use this database for both
>> applications (BaseX 8.6.7 and BaseX 7.3.1 on different systems). But
>> application in 8.6.7 can export database (with some missing data),
>> application in 7.3.1 cannot export database (error).
>>
>> If it is hard to understand, sorry about it. I shouldn't have asked this
>> question if one database is queried with same queries on both version BaseX
>> 8.6.7 and BaseX 7.3.1 could return different results.
>>
>> So, now, actually I couldn't provide you a valid test input ("Your input XML
>> (using BaseX 8.6.7)") because as you saw that in exported db from an
>> application using BaseX 8.6.7 on this olddatabase, the data is missing and
>> you questioned about it.
>>
>> "The expected result and how it differs from what you expect", I'd say it
>> should be the same from application using BaseX version 7.3.1 as my first
>> email (it can be replaced from "\n" to " ", it is ok).
>>
>> I asked because I just want to confirm there was no big change from
>> application using BaseX version 7.3.1 to application using BaseX version
>> 8.6.7 on old database. But the outputs are different that got me confused.
>>
>> Thanks,
>>
>>
>> On 02/02/2018 11:35 AM, Kirsten, Dirk wrote:
>>
>> Now I am very confused: What does “BaseX database version 7.3.1 (old
>> database) via Java application with BaseX version 8.6.7.” even mean? How can
>> you access a newer BaseX version with some older BaseX version? Sorry, but
>> this doesn’t make any sense to me.
>>
>> Could you please simple open the BaseX GUI and open your database and run
>> the XQuery?
>>
>>
>>
>> Also, as I said I think it doesn’t make any sense to focus on this old
>> database version anymore. Keep in mind that BaseX 7.3 is (I had to look this
>> up…) from June 2012 and hasn’t been supported for years.
>>
>>
>>
>> So, to move on from this, you need to provide the following (in general) for
>> people to be able to help you:
>>
>>
>>
>> -  Your input XML (using BaseX 8.6.7)
>>
>> -  You query (you already showed this, so not needed anymore)
>>
>> -  The actual result (you already showed this, so nothing to do)
>>
>> -  The expected result and how it differs from what you expect
>>
>>
>>
>> Cheers
>>
>> Dirk
>>
>>
>>
>> Von: Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
>> Gesendet: Freitag, 2. Februar 2018 11:19
>> An: Kirsten, Dirk ;
>> basex-talk@mailman.uni-konstanz.de
>> Betreff: Re: AW: AW: [basex-talk] Big Surprise from outputs in version 7.3.1
>> and 8.6.7 ?
>>
>>
>>
>> Thanks for your detail answer.
>>
>> What I gave to you is an exported output of BaseX database version 7.3.1
>> (old database) via Java application with BaseX version 8.6.7. I tried to
>> export with BaseX version 7.3.1 with same db:export() XQuery, but it returns
>> error
>>
>> db:export("userdb", 

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Christian Grün]

Hi Bang,

The general answer on your initial question: BaseX is
backward-compatible. Older databases can be opened and queried with
newer versions of BaseX.

This seems to conflict with the experiences you made. But I agree with
Dirk: It’s difficult to understand what is going wrong in your testing
environment. It’s not possible to tell why a query should yield
results that is not contained in the data you provide.

Maybe you could try to proceed step by step and give feedback:

1. Export the database with BaseX 7.3.1. Note that you cannot use all
the BaseX 8.x syntax with older versions of the software. Please check
out our documentation history to learn how to proceed [1].
2. Export the same database with BaseX 8.x.
3. Compare the resulting output.

If the output of BaseX 7 and 8 differs, then:

4. Ensure that your database directories are really identical.
5. Report back to us which output you believe is correct: If the
output of BaseX 7.x is wrong, it may even be due to a bug in the old
version, or due to some corrupt data that can successfully restored by
BaseX 8. If the output of BaseX 8.x is wrong, tell us what is missing.

If the output is identical, then:

4. Create a new database from this data with BaseX 8.x.
5. Run your query and compare the results.

Best,
Christian

[1] http://docs.basex.org/wiki/Documentation




On Fri, Feb 2, 2018 at 11:48 AM, Bang Pham Huu
 wrote:
> What I tried to say is: I'm using input (old database) which has lot of
> modifications since version 7.3.1 and I could use this database for both
> applications (BaseX 8.6.7 and BaseX 7.3.1 on different systems). But
> application in 8.6.7 can export database (with some missing data),
> application in 7.3.1 cannot export database (error).
>
> If it is hard to understand, sorry about it. I shouldn't have asked this
> question if one database is queried with same queries on both version BaseX
> 8.6.7 and BaseX 7.3.1 could return different results.
>
> So, now, actually I couldn't provide you a valid test input ("Your input XML
> (using BaseX 8.6.7)") because as you saw that in exported db from an
> application using BaseX 8.6.7 on this olddatabase, the data is missing and
> you questioned about it.
>
> "The expected result and how it differs from what you expect", I'd say it
> should be the same from application using BaseX version 7.3.1 as my first
> email (it can be replaced from "\n" to " ", it is ok).
>
> I asked because I just want to confirm there was no big change from
> application using BaseX version 7.3.1 to application using BaseX version
> 8.6.7 on old database. But the outputs are different that got me confused.
>
> Thanks,
>
>
> On 02/02/2018 11:35 AM, Kirsten, Dirk wrote:
>
> Now I am very confused: What does “BaseX database version 7.3.1 (old
> database) via Java application with BaseX version 8.6.7.” even mean? How can
> you access a newer BaseX version with some older BaseX version? Sorry, but
> this doesn’t make any sense to me.
>
> Could you please simple open the BaseX GUI and open your database and run
> the XQuery?
>
>
>
> Also, as I said I think it doesn’t make any sense to focus on this old
> database version anymore. Keep in mind that BaseX 7.3 is (I had to look this
> up…) from June 2012 and hasn’t been supported for years.
>
>
>
> So, to move on from this, you need to provide the following (in general) for
> people to be able to help you:
>
>
>
> -  Your input XML (using BaseX 8.6.7)
>
> -  You query (you already showed this, so not needed anymore)
>
> -  The actual result (you already showed this, so nothing to do)
>
> -  The expected result and how it differs from what you expect
>
>
>
> Cheers
>
> Dirk
>
>
>
> Von: Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
> Gesendet: Freitag, 2. Februar 2018 11:19
> An: Kirsten, Dirk ;
> basex-talk@mailman.uni-konstanz.de
> Betreff: Re: AW: AW: [basex-talk] Big Surprise from outputs in version 7.3.1
> and 8.6.7 ?
>
>
>
> Thanks for your detail answer.
>
> What I gave to you is an exported output of BaseX database version 7.3.1
> (old database) via Java application with BaseX version 8.6.7. I tried to
> export with BaseX version 7.3.1 with same db:export() XQuery, but it returns
> error
>
> db:export("userdb", "/home/mascalan/", map { 'method': 'xml' })
> Error when querying BaseX database 'Failed at querying the database, detail:
> Stopped at line 1, column 45: [XPST0003] Invalid key, simple expression
> expected. Check collection name and version are valid first.'.
>
> I think if I could export to you the XML of old database by BaseX version
> 7.3.1, you could see the
> http://localhost:8080/def/crs/OGC/0/_Temporal_template in the XML file which
> BaseX version 8.6.7 couldn't find to export (?)
>
>
>
> On 02/02/2018 11:02 AM, Kirsten, Dirk wrote:
>
> Hi,
>
>
>
> well, the XQuery might be the same, but because you certainly use different
> BaseX instances they might use 

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Bang Pham Huu]

Thanks for your detail answer.

What I gave to you is an exported output of BaseX database version 7.3.1
(old database) via Java application with BaseX version 8.6.7. I tried to
export with BaseX version 7.3.1 with same db:export() XQuery, but it
returns error

db:export("userdb", "/home/mascalan/", map { 'method': 'xml' })
Error when querying BaseX database 'Failed at querying the database,
detail: Stopped at line 1, column 45: [XPST0003] Invalid key, simple
expression expected. Check collection name and version are valid first.'.

I think if I could export to you the XML of old database by BaseX
version 7.3.1, you could see the
http://localhost:8080/def/crs/OGC/0/_Temporal_template in the XML file
which BaseX version 8.6.7 couldn't find to export (?)


On 02/02/2018 11:02 AM, Kirsten, Dirk wrote:
>
> Hi,
>
>  
>
> well, the XQuery might be the same, but because you certainly use
> different BaseX instances they might use different properties (i.e.
> point to a different BaseX storage). At least for the examples you
> provide here it simply doesn’t add up. To make it clear: You say the
> result on the right is with the old BaseX version. One of the results
> is the string http://localhost:8080/def/crs/OGC/0/_Temporal_template.
> However, the string does simply not appear in your input XML. So,
> where does the difference come from?
>
>  
>
> Maybe it would be easier to simply forget about the old version and
> instead you could describe what results you are missing from the 8.6.7
> vcersion? (you said data is missing)? I can hardly imagine that
> something is really missing in this case.
>
>  
>
> However, what certainly has improved (and thus: changed) with BaseX 8
> (I think) is the serialization. It uses the adaptive serialization by
> default, which uses newlines as separators when serialiazing. However,
> you can switch to any other serialization method quite easily and use
> the old default xml by issueing “declare option output:method “xml”;
> in the query prolog.
>
>  
>
> Cheers
>
> Dirk
>
>  
>
> *Von:*Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
> *Gesendet:* Freitag, 2. Februar 2018 10:08
> *An:* Kirsten, Dirk ;
> basex-talk@mailman.uni-konstanz.de
> *Betreff:* Re: AW: [basex-talk] Big Surprise from outputs in version
> 7.3.1 and 8.6.7 ?
>
>  
>
> Yes, I'm sure I tested with old database from version 7.3.1 for both
> versions (7.3.1 and 8.6.7). Please see the exported XML from this
> database here: https://pastebin.com/ZjkFrE7B
>
> with this XQuery: |db:export("userdb", "./userdb", map||{ 'method':
> 'xml'||})|
>
> At least I can see that query in version 7.3.1 doesn't return "new
> line character \n" as in 8.6.7 but an empty space " ". 
>
> Thanks,
>
>  
>
> On 02/02/2018 09:46 AM, Kirsten, Dirk wrote:
>
> Hallo,
>
> are you sure you are querying the same collection? I am quite
> confused by your different outputs, because they seem to have not
> much in common (the results on the left almost exclusively return
> URIs pointing to opengis.net and the one on the right to
> localhost:8080?
>
> If you are sure it would most certainly be helpful if you provide
> the input XML.
>
> Also, looking at your query I don't really get why you write it
> that way, e.g. "for $i in $x return $i" is identical as simply "$x"...
>
> Cheers
> Dirk
>
>
>
> Senacor Technologies Aktiengesellschaft - Sitz: Eschborn -
> Amtsgericht Frankfurt am Main - Reg.-Nr.: HRB 105546
> Vorstand: Matthias Tomann, Marcus Purzer -
> Aufsichtsratsvorsitzender: Daniel Grözinger
>
> -Ursprüngliche Nachricht-
> Von: basex-talk-boun...@mailman.uni-konstanz.de
> 
> [mailto:basex-talk-boun...@mailman.uni-konstanz.de] Im Auftrag von
> Bang Pham Huu
> Gesendet: Freitag, 2. Februar 2018 08:45
> An: basex-talk@mailman.uni-konstanz.de
> 
> Betreff: [basex-talk] Big Surprise from outputs in version 7.3.1
> and 8.6.7 ?
>
> Hello,
>
> I've been using BaseX to query an XML file in version 7.3.1 and it
> worked well. However, because of this problem
> 
> https://www.mail-archive.com/basex-talk@mailman.uni-konstanz.de/msg10241.html
> and I was suggested to use version 8.6.7 then I changed to use
> this version in a Java Web application which queries the old BaseX
> files from version 7.3.1.
>
> However, I didn't know that this version changes created a very
> surprise result between version 7.3.1 and 8.6.7 (i.e: data is
> missing in version
> 8.6.7 from output result !!!).
>
> Could someone tell me why it happens and how to use BaseX version
> 8.6.7 on BaseX database from version 7.3.1.
>
> Here is the difference between 2 outputs on same old BaseX
> database version 7.3.1 (left: 8.6.7, right: 7.3.1) with same XQuery:
> 

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Bang Pham Huu]

What I tried to say is: I'm using input (old database) which has lot of
modifications since version 7.3.1 and I could use this database for both
applications (BaseX 8.6.7 and BaseX 7.3.1 on different systems). But
application in 8.6.7 can export database (with some missing data),
application in 7.3.1 cannot export database (error).

If it is hard to understand, sorry about it. I shouldn't have asked this
question if one database is queried with same queries on both version
BaseX 8.6.7 and BaseX 7.3.1 could return different results.

So, now, actually I couldn't provide you a valid test input ("Your input
XML (using BaseX 8.6.7)") because as you saw that in exported db from an
application using BaseX 8.6.7 on this olddatabase, the data is missing
and you questioned about it.

"The expected result and how it differs from what you expect", I'd say
it should be the same from application using BaseX version 7.3.1 as my
first email (it can be replaced from "\n" to " ", it is ok).

I asked because I just want to confirm there was no big change from
application using BaseX version 7.3.1 to application using BaseX version
8.6.7 on old database. But the outputs are different that got me confused.

Thanks,


On 02/02/2018 11:35 AM, Kirsten, Dirk wrote:
>
> Now I am very confused: What does “BaseX database version 7.3.1 (old
> database) via Java application with BaseX version 8.6.7.” even mean?
> How can you access a newer BaseX version with some older BaseX
> version? Sorry, but this doesn’t make any sense to me.
>
> Could you please simple open the BaseX GUI and open your database and
> run the XQuery?
>
>  
>
> Also, as I said I think it doesn’t make any sense to focus on this old
> database version anymore. Keep in mind that BaseX 7.3 is (I had to
> look this up…) from June 2012 and hasn’t been supported for years.
>
>  
>
> So, to move on from this, you need to provide the following (in
> general) for people to be able to help you:
>
>  
>
> -  Your input XML (using BaseX 8.6.7)
>
> -  You query (you already showed this, so not needed anymore)
>
> -  The actual result (you already showed this, so nothing to do)
>
> -  The expected result and how it differs from what you expect
>
>  
>
> Cheers
>
> Dirk
>
>  
>
> *Von:*Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
> *Gesendet:* Freitag, 2. Februar 2018 11:19
> *An:* Kirsten, Dirk ;
> basex-talk@mailman.uni-konstanz.de
> *Betreff:* Re: AW: AW: [basex-talk] Big Surprise from outputs in
> version 7.3.1 and 8.6.7 ?
>
>  
>
> Thanks for your detail answer.
>
> What I gave to you is an exported output of BaseX database version
> 7.3.1 (old database) via Java application with BaseX version 8.6.7. I
> tried to export with BaseX version 7.3.1 with same db:export() XQuery,
> but it returns error
>
> db:export("userdb", "/home/mascalan/", map { 'method': 'xml' })
> Error when querying BaseX database 'Failed at querying the database,
> detail: Stopped at line 1, column 45: [XPST0003] Invalid key, simple
> expression expected. Check collection name and version are valid first.'.
>
> I think if I could export to you the XML of old database by BaseX
> version 7.3.1, you could see the
> http://localhost:8080/def/crs/OGC/0/_Temporal_template in the XML file
> which BaseX version 8.6.7 couldn't find to export (?)
>
>  
>
> On 02/02/2018 11:02 AM, Kirsten, Dirk wrote:
>
> Hi,
>
>  
>
> well, the XQuery might be the same, but because you certainly use
> different BaseX instances they might use different properties
> (i.e. point to a different BaseX storage). At least for the
> examples you provide here it simply doesn’t add up. To make it
> clear: You say the result on the right is with the old BaseX
> version. One of the results is the string
> http://localhost:8080/def/crs/OGC/0/_Temporal_template. However,
> the string does simply not appear in your input XML. So, where
> does the difference come from?
>
>  
>
> Maybe it would be easier to simply forget about the old version
> and instead you could describe what results you are missing from
> the 8.6.7 vcersion? (you said data is missing)? I can hardly
> imagine that something is really missing in this case.
>
>  
>
> However, what certainly has improved (and thus: changed) with
> BaseX 8 (I think) is the serialization. It uses the adaptive
> serialization by default, which uses newlines as separators when
> serialiazing. However, you can switch to any other serialization
> method quite easily and use the old default xml by issueing
> “declare option output:method “xml”; in the query prolog.
>
>  
>
> Cheers
>
> Dirk
>
>  
>
> *Von:*Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
> *Gesendet:* Freitag, 2. Februar 2018 10:08
> *An:* Kirsten, Dirk 
> ;
> basex-talk@mailman.uni-konstanz.de
>

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Kirsten, Dirk]

Now I am very confused: What does "BaseX database version 7.3.1 (old database) 
via Java application with BaseX version 8.6.7." even mean? How can you access a 
newer BaseX version with some older BaseX version? Sorry, but this doesn't make 
any sense to me.
Could you please simple open the BaseX GUI and open your database and run the 
XQuery?

Also, as I said I think it doesn't make any sense to focus on this old database 
version anymore. Keep in mind that BaseX 7.3 is (I had to look this up...) from 
June 2012 and hasn't been supported for years.

So, to move on from this, you need to provide the following (in general) for 
people to be able to help you:


-  Your input XML (using BaseX 8.6.7)

-  You query (you already showed this, so not needed anymore)

-  The actual result (you already showed this, so nothing to do)

-  The expected result and how it differs from what you expect

Cheers
Dirk

Von: Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
Gesendet: Freitag, 2. Februar 2018 11:19
An: Kirsten, Dirk ; basex-talk@mailman.uni-konstanz.de
Betreff: Re: AW: AW: [basex-talk] Big Surprise from outputs in version 7.3.1 
and 8.6.7 ?


Thanks for your detail answer.

What I gave to you is an exported output of BaseX database version 7.3.1 (old 
database) via Java application with BaseX version 8.6.7. I tried to export with 
BaseX version 7.3.1 with same db:export() XQuery, but it returns error

db:export("userdb", "/home/mascalan/", map { 'method': 'xml' })
Error when querying BaseX database 'Failed at querying the database, detail: 
Stopped at line 1, column 45: [XPST0003] Invalid key, simple expression 
expected. Check collection name and version are valid first.'.

I think if I could export to you the XML of old database by BaseX version 
7.3.1, you could see the
http://localhost:8080/def/crs/OGC/0/_Temporal_template in the XML file which 
BaseX version 8.6.7 couldn't find to export (?)

On 02/02/2018 11:02 AM, Kirsten, Dirk wrote:
Hi,

well, the XQuery might be the same, but because you certainly use different 
BaseX instances they might use different properties (i.e. point to a different 
BaseX storage). At least for the examples you provide here it simply doesn't 
add up. To make it clear: You say the result on the right is with the old BaseX 
version. One of the results is the string 
http://localhost:8080/def/crs/OGC/0/_Temporal_template. However, the string 
does simply not appear in your input XML. So, where does the difference come 
from?

Maybe it would be easier to simply forget about the old version and instead you 
could describe what results you are missing from the 8.6.7 vcersion? (you said 
data is missing)? I can hardly imagine that something is really missing in this 
case.

However, what certainly has improved (and thus: changed) with BaseX 8 (I think) 
is the serialization. It uses the adaptive serialization by default, which uses 
newlines as separators when serialiazing. However, you can switch to any other 
serialization method quite easily and use the old default xml by issueing 
"declare option output:method "xml"; in the query prolog.

Cheers
Dirk

Von: Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
Gesendet: Freitag, 2. Februar 2018 10:08
An: Kirsten, Dirk ; 
basex-talk@mailman.uni-konstanz.de
Betreff: Re: AW: [basex-talk] Big Surprise from outputs in version 7.3.1 and 
8.6.7 ?


Yes, I'm sure I tested with old database from version 7.3.1 for both versions 
(7.3.1 and 8.6.7). Please see the exported XML from this database here: 
https://pastebin.com/ZjkFrE7B

with this XQuery: db:export("userdb", "./userdb", map { 'method': 'xml' })

At least I can see that query in version 7.3.1 doesn't return "new line 
character \n" as in 8.6.7 but an empty space " ".

Thanks,

On 02/02/2018 09:46 AM, Kirsten, Dirk wrote:
Hallo,

are you sure you are querying the same collection? I am quite confused by your 
different outputs, because they seem to have not much in common (the results on 
the left almost exclusively return URIs pointing to opengis.net and the one on 
the right to localhost:8080?

If you are sure it would most certainly be helpful if you provide the input XML.

Also, looking at your query I don't really get why you write it that way, e.g. 
"for $i in $x return $i" is identical as simply "$x"...

Cheers
Dirk




Senacor Technologies Aktiengesellschaft - Sitz: Eschborn - Amtsgericht 
Frankfurt am Main - Reg.-Nr.: HRB 105546
Vorstand: Matthias Tomann, Marcus Purzer - Aufsichtsratsvorsitzender: Daniel 
Grözinger
-Ursprüngliche Nachricht-
Von: 
basex-talk-boun...@mailman.uni-konstanz.de
 [mailto:basex-talk-boun...@mailman.uni-konstanz.de] Im Auftrag von Bang Pham 
Huu
Gesendet: Freitag, 2. Februar 2018 08:45
An: 

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Kirsten, Dirk]

Hi,

well, the XQuery might be the same, but because you certainly use different 
BaseX instances they might use different properties (i.e. point to a different 
BaseX storage). At least for the examples you provide here it simply doesn't 
add up. To make it clear: You say the result on the right is with the old BaseX 
version. One of the results is the string 
http://localhost:8080/def/crs/OGC/0/_Temporal_template. However, the string 
does simply not appear in your input XML. So, where does the difference come 
from?

Maybe it would be easier to simply forget about the old version and instead you 
could describe what results you are missing from the 8.6.7 vcersion? (you said 
data is missing)? I can hardly imagine that something is really missing in this 
case.

However, what certainly has improved (and thus: changed) with BaseX 8 (I think) 
is the serialization. It uses the adaptive serialization by default, which uses 
newlines as separators when serialiazing. However, you can switch to any other 
serialization method quite easily and use the old default xml by issueing 
"declare option output:method "xml"; in the query prolog.

Cheers
Dirk

Von: Bang Pham Huu [mailto:b.pham...@jacobs-university.de]
Gesendet: Freitag, 2. Februar 2018 10:08
An: Kirsten, Dirk ; basex-talk@mailman.uni-konstanz.de
Betreff: Re: AW: [basex-talk] Big Surprise from outputs in version 7.3.1 and 
8.6.7 ?


Yes, I'm sure I tested with old database from version 7.3.1 for both versions 
(7.3.1 and 8.6.7). Please see the exported XML from this database here: 
https://pastebin.com/ZjkFrE7B

with this XQuery: db:export("userdb", "./userdb", map { 'method': 'xml' })

At least I can see that query in version 7.3.1 doesn't return "new line 
character \n" as in 8.6.7 but an empty space " ".

Thanks,

On 02/02/2018 09:46 AM, Kirsten, Dirk wrote:
Hallo,

are you sure you are querying the same collection? I am quite confused by your 
different outputs, because they seem to have not much in common (the results on 
the left almost exclusively return URIs pointing to opengis.net and the one on 
the right to localhost:8080?

If you are sure it would most certainly be helpful if you provide the input XML.

Also, looking at your query I don't really get why you write it that way, e.g. 
"for $i in $x return $i" is identical as simply "$x"...

Cheers
Dirk



Senacor Technologies Aktiengesellschaft - Sitz: Eschborn - Amtsgericht 
Frankfurt am Main - Reg.-Nr.: HRB 105546
Vorstand: Matthias Tomann, Marcus Purzer - Aufsichtsratsvorsitzender: Daniel 
Grözinger
-Ursprüngliche Nachricht-
Von: 
basex-talk-boun...@mailman.uni-konstanz.de
 [mailto:basex-talk-boun...@mailman.uni-konstanz.de] Im Auftrag von Bang Pham 
Huu
Gesendet: Freitag, 2. Februar 2018 08:45
An: 
basex-talk@mailman.uni-konstanz.de
Betreff: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

Hello,

I've been using BaseX to query an XML file in version 7.3.1 and it worked well. 
However, because of this problem 
https://www.mail-archive.com/basex-talk@mailman.uni-konstanz.de/msg10241.html
and I was suggested to use version 8.6.7 then I changed to use this version in 
a Java Web application which queries the old BaseX files from version 7.3.1.

However, I didn't know that this version changes created a very surprise result 
between version 7.3.1 and 8.6.7 (i.e: data is missing in version
8.6.7 from output result !!!).

Could someone tell me why it happens and how to use BaseX version 8.6.7 on 
BaseX database from version 7.3.1.

Here is the difference between 2 outputs on same old BaseX database version 
7.3.1 (left: 8.6.7, right: 7.3.1) with same XQuery:
https://www.diffchecker.com/iCgLhRUx

The XQuery is:

 declare namespace gml = "http://www.opengis.net/gml/3.2;;
 declare function local:get-children() {
 let $x := collection('userdb')//gml:identifier/text()
 return
  if (exists($x)) then
   for $i in $x
return $i
  else 
 };

  let $x := distinct-values(local:get-children())
  for $i in $x return $i

Thanks,

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Bang Pham Huu]

Yes, I'm sure I tested with old database from version 7.3.1 for both
versions (7.3.1 and 8.6.7). Please see the exported XML from this
database here: https://pastebin.com/ZjkFrE7B

with this XQuery: |db:export||(||"userdb"||, ||"./userdb"||, ||map||{
||'method'||: ||'xml'||})|

At least I can see that query in version 7.3.1 doesn't return "new line
character \n" as in 8.6.7 but an empty space " ". 

Thanks,


On 02/02/2018 09:46 AM, Kirsten, Dirk wrote:
> Hallo,
>
> are you sure you are querying the same collection? I am quite confused
> by your different outputs, because they seem to have not much in
> common (the results on the left almost exclusively return URIs
> pointing to opengis.net and the one on the right to localhost:8080?
>
> If you are sure it would most certainly be helpful if you provide the
> input XML.
>
> Also, looking at your query I don't really get why you write it that
> way, e.g. "for $i in $x return $i" is identical as simply "$x"...
>
> Cheers
> Dirk
>
> **
> Senacor Technologies Aktiengesellschaft - Sitz: Eschborn -
> Amtsgericht Frankfurt am Main - Reg.-Nr.: HRB 105546
> Vorstand: Matthias Tomann, Marcus Purzer - Aufsichtsratsvorsitzender:
> Daniel Grözinger
>
> -Ursprüngliche Nachricht-
> Von: basex-talk-boun...@mailman.uni-konstanz.de
> [mailto:basex-talk-boun...@mailman.uni-konstanz.de] Im Auftrag von
> Bang Pham Huu
> Gesendet: Freitag, 2. Februar 2018 08:45
> An: basex-talk@mailman.uni-konstanz.de
> Betreff: [basex-talk] Big Surprise from outputs in version 7.3.1 and
> 8.6.7 ?
>
> Hello,
>
> I've been using BaseX to query an XML file in version 7.3.1 and it
> worked well. However, because of this problem
> https://www.mail-archive.com/basex-talk@mailman.uni-konstanz.de/msg10241.html
> and I was suggested to use version 8.6.7 then I changed to use this
> version in a Java Web application which queries the old BaseX files
> from version 7.3.1.
>
> However, I didn't know that this version changes created a very
> surprise result between version 7.3.1 and 8.6.7 (i.e: data is missing
> in version
> 8.6.7 from output result !!!).
>
> Could someone tell me why it happens and how to use BaseX version
> 8.6.7 on BaseX database from version 7.3.1.
>
> Here is the difference between 2 outputs on same old BaseX database
> version 7.3.1 (left: 8.6.7, right: 7.3.1) with same XQuery:
> https://www.diffchecker.com/iCgLhRUx
>
> The XQuery is:
>
>  declare namespace gml = "http://www.opengis.net/gml/3.2;;
>  declare function local:get-children() {
>  let $x := collection('userdb')//gml:identifier/text()
>  return
>   if (exists($x)) then
>    for $i in $x
>     return $i
>   else 
>  };
>
>   let $x := distinct-values(local:get-children())
>   for $i in $x return $i
>
> Thanks,
>
>
>
>

Re: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

[Kirsten, Dirk]

Hallo,

are you sure you are querying the same collection? I am quite confused by your 
different outputs, because they seem to have not much in common (the results on 
the left almost exclusively return URIs pointing to opengis.net and the one on 
the right to localhost:8080?

If you are sure it would most certainly be helpful if you provide the input XML.

Also, looking at your query I don't really get why you write it that way, e.g. 
"for $i in $x return $i" is identical as simply "$x"...

Cheers
Dirk


Senacor Technologies Aktiengesellschaft - Sitz: Eschborn - Amtsgericht 
Frankfurt am Main - Reg.-Nr.: HRB 105546
Vorstand: Matthias Tomann, Marcus Purzer - Aufsichtsratsvorsitzender: Daniel 
Gr?zinger

-Urspr?ngliche Nachricht-
Von: basex-talk-boun...@mailman.uni-konstanz.de 
[mailto:basex-talk-boun...@mailman.uni-konstanz.de] Im Auftrag von Bang Pham Huu
Gesendet: Freitag, 2. Februar 2018 08:45
An: basex-talk@mailman.uni-konstanz.de
Betreff: [basex-talk] Big Surprise from outputs in version 7.3.1 and 8.6.7 ?

Hello,

I've been using BaseX to query an XML file in version 7.3.1 and it worked well. 
However, because of this problem 
https://www.mail-archive.com/basex-talk@mailman.uni-konstanz.de/msg10241.html
and I was suggested to use version 8.6.7 then I changed to use this version in 
a Java Web application which queries the old BaseX files from version 7.3.1.

However, I didn't know that this version changes created a very surprise result 
between version 7.3.1 and 8.6.7 (i.e: data is missing in version
8.6.7 from output result !!!).

Could someone tell me why it happens and how to use BaseX version 8.6.7 on 
BaseX database from version 7.3.1.

Here is the difference between 2 outputs on same old BaseX database version 
7.3.1 (left: 8.6.7, right: 7.3.1) with same XQuery:
https://www.diffchecker.com/iCgLhRUx

The XQuery is:

 declare namespace gml = "http://www.opengis.net/gml/3.2;;
 declare function local:get-children() {
 let $x := collection('userdb')//gml:identifier/text()
 return
  if (exists($x)) then
   for $i in $x
return $i
  else 
 };

  let $x := distinct-values(local:get-children())
  for $i in $x return $i

Thanks,