[xwiki-devs] Is it possible to make a Comparator that compares XWiki objects by its properties?

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crocket

15 Nov 2012 15 Nov '12

1:57 p.m.

I want to make such a Comparator so that I can sort objects retrieved by $xwiki.getObjects("Class") If I had the Comparator, I'd be able to pass it to a collection sort method and sort objects. I'm planning to make that Comparator in a groovy snippet. I may be able to make a Component for that even. Is it possible? If it was possible, would you give me some hints?

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crocket

15 Nov 15 Nov

3 p.m.

Ouch, there is a typo. $xwiki -> $doc #set($services=$xwiki.getDocument("Private.Snowberry Network Services").getObjects("Private.NetworkServices")) #foreach($prop in $services[0].getProperties()) $services[0].getProperty($prop.getName()).getName() = $services[0].getProperty($prop.getName()).getProperty().getClassType() #end The velocity snippet above produced an output. port = com.xpn.xwiki.objects.LongProperty protocol = com.xpn.xwiki.objects.StringListProperty application = com.xpn.xwiki.objects.StringProperty description = com.xpn.xwiki.objects.StringProperty service = com.xpn.xwiki.objects.StringProperty firewalled = com.xpn.xwiki.objects.IntegerProperty It appears that objects returned from $doc.getObjects("Class") have properties that belong to com.xpn.xwiki.objects package. I perused the package on http://maven.xwiki.org/site/docs/xwiki-javadoc-4.2.x/com/xpn/xwiki/objects/… I guess I will have to implement a Comparator that compares each of the following properties in the com.xpn.xwiki.objects package. BaseStringProperty DateProperty DoubleProperty FloatProperty IntegerProperty LongProperty NumberProperty Am I doing it right? or is it a bad idea to make separate comparison codes for each of those properties? On Thu, Nov 15, 2012 at 9:57 PM, crocket <crockabiscuit(a)gmail.com> wrote:

...

Jerome Velociter

7:06 p.m.

Hi, On 11/15/2012 03:00 PM, crocket wrote:

...

You might be interested by http://velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/ge… Hope this helps, Jerome

...

On Thu, Nov 15, 2012 at 9:57 PM, crocket <crockabiscuit(a)gmail.com> wrote:

_______________________________________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/devs

crocket

16 Nov 16 Nov

5:58 a.m.

I tried $sorttool, and it didn't work on XWiki objects. On http://velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/ge…, I saw "The sort method takes two parameters a collection and a property name or an array of property names. The property names and corresponding methods must conform to java bean standards since commons-beanutils is used to extract the property values." XWiki Objects don't support java bean standards. I guess they could be extracted by $obj.getProperty("prop").getProperty().getValue() The problem now is to figure out the right sort algorithms for sorting based on multiple properties. On Fri, Nov 16, 2012 at 3:06 AM, Jerome Velociter <jerome(a)velociter.fr>wrote;wrote:

...

Hi, On 11/15/2012 03:00 PM, crocket wrote:

Ouch, there is a typo. $xwiki -> $doc #set($services=$xwiki.**getDocument("Private.Snowberry Network Services").getObjects("**Private.NetworkServices")) #foreach($prop in $services[0].getProperties()) $services[0].getProperty($**prop.getName()).getName() = $services[0].getProperty($**prop.getName()).getProperty().** getClassType() #end The velocity snippet above produced an output. port = com.xpn.xwiki.objects.**LongProperty protocol = com.xpn.xwiki.objects.**StringListProperty application = com.xpn.xwiki.objects.**StringProperty description = com.xpn.xwiki.objects.**StringProperty service = com.xpn.xwiki.objects.**StringProperty firewalled = com.xpn.xwiki.objects.**IntegerProperty It appears that objects returned from $doc.getObjects("Class") have properties that belong to com.xpn.xwiki.objects package. I perused the package on http://maven.xwiki.org/site/**docs/xwiki-javadoc-4.2.x/com/** xpn/xwiki/objects/package-**summary.html<http://maven.xwiki.org/site/doc… I guess I will have to implement a Comparator that compares each of the following properties in the com.xpn.xwiki.objects package. BaseStringProperty DateProperty DoubleProperty FloatProperty IntegerProperty LongProperty NumberProperty Am I doing it right? or is it a bad idea to make separate comparison codes for each of those properties?

You might be interested by http://velocity.apache.org/** tools/devel/javadoc/org/**apache/velocity/tools/generic/**SortTool.html<… Hope this helps, Jerome

On Thu, Nov 15, 2012 at 9:57 PM, crocket <crockabiscuit(a)gmail.com> wrote: I want to make such a Comparator so that I can sort objects retrieved by

$xwiki.getObjects("Class") If I had the Comparator, I'd be able to pass it to a collection sort method and sort objects. I'm planning to make that Comparator in a groovy snippet. I may be able to make a Component for that even. Is it possible? If it was possible, would you give me some hints? ______________________________**_________________

devs mailing list devs(a)xwiki.org http://lists.xwiki.org/**mailman/listinfo/devs<http://lists.xwiki.org/ma…

______________________________**_________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/**mailman/listinfo/devs<http://lists.xwiki.org/ma…

crocket

6:40 a.m.

OK, $obj.getProperty("prop").getValue() gets the desired values. $sorttool.sort conforms only to java bean standards. I'll implement something like $sorttool.*sort<http://velocity.apache.org/tools/releases/1.4/javadoc/org/apache/velocity/tools/generic/SortTool.html#sort(java.util.Collection, java.util.List)>*(java.util.Collection collection, java.util.List properties) that conforms to XWiki Object standards. On Fri, Nov 16, 2012 at 3:06 AM, Jerome Velociter <jerome(a)velociter.fr>wrote;wrote:

...

Hi, On 11/15/2012 03:00 PM, crocket wrote:

You might be interested by http://velocity.apache.org/** tools/devel/javadoc/org/**apache/velocity/tools/generic/**SortTool.html<… Hope this helps, Jerome

On Thu, Nov 15, 2012 at 9:57 PM, crocket <crockabiscuit(a)gmail.com> wrote: I want to make such a Comparator so that I can sort objects retrieved by

devs mailing list devs(a)xwiki.org http://lists.xwiki.org/**mailman/listinfo/devs<http://lists.xwiki.org/ma…

______________________________**_________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/**mailman/listinfo/devs<http://lists.xwiki.org/ma…

Eduard Moraru

3:04 p.m.

Hi, I`ve recently published a snippet [1] that provides a macro for sorting lists of XWiki objects in velocity. As for platform, we should probably either include such a macro in macros.vm, or extend SortTool and expose a method for handling XWiki objects. Hope this helps, Eduard ---------- [1] http://extensions.xwiki.org/xwiki/bin/view/Extension/Sort+a+list+of+XWiki+o… On Fri, Nov 16, 2012 at 7:40 AM, crocket <crockabiscuit(a)gmail.com> wrote:

...

OK, $obj.getProperty("prop").getValue() gets the desired values. $sorttool.sort conforms only to java bean standards. I'll implement something like $sorttool.*sort< http://velocity.apache.org/tools/releases/1.4/javadoc/org/apache/velocity/t… , java.util.List)>*(java.util.Collection collection, java.util.List properties) that conforms to XWiki Object standards. On Fri, Nov 16, 2012 at 3:06 AM, Jerome Velociter <jerome(a)velociter.fr

wrote:

Hi, On 11/15/2012 03:00 PM, crocket wrote: > Ouch, there is a typo. $xwiki -> $doc > > #set($services=$xwiki.**getDocument("Private.Snowberry Network > Services").getObjects("**Private.NetworkServices")) > > #foreach($prop in $services[0].getProperties()) > $services[0].getProperty($**prop.getName()).getName() = > $services[0].getProperty($**prop.getName()).getProperty().** > getClassType() > #end > > The velocity snippet above produced an output. > > port = com.xpn.xwiki.objects.**LongProperty > protocol = com.xpn.xwiki.objects.**StringListProperty > application = com.xpn.xwiki.objects.**StringProperty > description = com.xpn.xwiki.objects.**StringProperty > service = com.xpn.xwiki.objects.**StringProperty > firewalled = com.xpn.xwiki.objects.**IntegerProperty > > It appears that objects returned from $doc.getObjects("Class") have > properties that belong to com.xpn.xwiki.objects package. > I perused the package on > http://maven.xwiki.org/site/**docs/xwiki-javadoc-4.2.x/com/** > xpn/xwiki/objects/package-**summary.html<

http://maven.xwiki.org/site/docs/xwiki-javadoc-4.2.x/com/xpn/xwiki/objects/…

> > I guess I will have to implement a Comparator that compares each of the > following properties in the com.xpn.xwiki.objects package. > > BaseStringProperty > DateProperty > DoubleProperty > FloatProperty > IntegerProperty > LongProperty > NumberProperty > > Am I doing it right? or is it a bad idea to make separate comparison

codes

for each of those properties?

You might be interested by http://velocity.apache.org/** tools/devel/javadoc/org/**apache/velocity/tools/generic/**SortTool.html<

http://velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/ge…

Hope this helps, Jerome > On Thu, Nov 15, 2012 at 9:57 PM, crocket <crockabiscuit(a)gmail.com>

wrote:

> I want to make such a Comparator so that I can sort objects retrieved

>> $xwiki.getObjects("Class") >> If I had the Comparator, I'd be able to pass it to a collection sort >> method and sort objects. >> >> I'm planning to make that Comparator in a groovy snippet. >> I may be able to make a Component for that even. >> >> Is it possible? >> >> If it was possible, would you give me some hints? >> >> ______________________________**_________________ > devs mailing list > devs(a)xwiki.org > http://lists.xwiki.org/**mailman/listinfo/devs<

http://lists.xwiki.org/mailman/listinfo/devs>

______________________________**_________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/**mailman/listinfo/devs<

http://lists.xwiki.org/mailman/listinfo/devs>

_______________________________________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/devs

crocket

17 Nov 17 Nov

12:14 p.m.

I read the code, but it doesn't sort by multiple properties. I'm writing components that help sort by properties. On Fri, Nov 16, 2012 at 11:04 PM, Eduard Moraru <enygma2002(a)gmail.com>wrote;wrote:

...

OK, $obj.getProperty("prop").getValue() gets the desired values. $sorttool.sort conforms only to java bean standards. I'll implement something like $sorttool.*sort<

http://velocity.apache.org/tools/releases/1.4/javadoc/org/apache/velocity/t…

, java.util.List)>*(java.util.Collection collection, java.util.List properties) that conforms to XWiki Object standards. On Fri, Nov 16, 2012 at 3:06 AM, Jerome Velociter <jerome(a)velociter.fr

wrote:

http://maven.xwiki.org/site/docs/xwiki-javadoc-4.2.x/com/xpn/xwiki/objects/…

>> >> I guess I will have to implement a Comparator that compares each of

the

> following properties in the com.xpn.xwiki.objects package. > > BaseStringProperty > DateProperty > DoubleProperty > FloatProperty > IntegerProperty > LongProperty > NumberProperty > > Am I doing it right? or is it a bad idea to make separate comparison

codes >> for each of those properties? >>

> You might be interested by http://velocity.apache.org/** >

tools/devel/javadoc/org/**apache/velocity/tools/generic/**SortTool.html<

http://velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/ge… >

> > Hope this helps, > > Jerome >

> >> On Thu, Nov 15, 2012 at 9:57 PM, crocket <crockabiscuit(a)gmail.com> > wrote: > >> > >> I want to make such a Comparator so that I can sort objects retrieved > by > >>> $xwiki.getObjects("Class") > >>> If I had the Comparator, I'd be able to pass it to a collection sort > >>> method and sort objects. > >>> > >>> I'm planning to make that Comparator in a groovy snippet. > >>> I may be able to make a Component for that even. > >>> > >>> Is it possible? > >>> > >>> If it was possible, would you give me some hints? > >>> > >>> ______________________________**_________________ > >> devs mailing list > >> devs(a)xwiki.org > >> http://lists.xwiki.org/**mailman/listinfo/devs< > http://lists.xwiki.org/mailman/listinfo/devs> > >> >

> > ______________________________**_________________ > > devs mailing list > > devs(a)xwiki.org > > http://lists.xwiki.org/**mailman/listinfo/devs< > http://lists.xwiki.org/mailman/listinfo/devs> >

> _______________________________________________ > devs mailing list > devs(a)xwiki.org > http://lists.xwiki.org/mailman/listinfo/devs

_______________________________________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/devs

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crocket
Eduard Moraru
Jerome Velociter