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Re: [xsl] recursive sorting by element name
2007-11-29 10:45:43
Wendell, thank you for the workaround. This does indeed solve the
issue I'm seeing on Ubuntu. I no longer get the runtime error from
the xsltproc binary. Am testing it now with Java.
On Nov 29, 2007 12:21 PM, Wendell Piez <wapiez(_at_)mulberrytech(_dot_)com>
wrote:
Davis,
It's difficult to see why you're getting the inconsistent behavior
without more info, and in particular who (if anyone) is out of
conformance here. But a workaround shouldn't be too hard in any case. Try
this:
<xsl:template match="node()">
<xsl:copy>
<xsl:copy-of select="@*"/>
<!-- copy all the attributes before
applying templates to the children only -->
<xsl:apply-templates select="node()">
<xsl:sort select="@typeName"/>
<xsl:sort select="name(.)"/>
<xsl:sort/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
Cheers,
Wendell
At 11:22 AM 11/29/2007, you wrote:
Hi, a follow-up question...
I am running into some issues / inconsistencies running this
transformation on command line vs. within java vs. which platform I
run it on. I'm hoping the list might have some pointers on how to
resolve this.
Here is the XSLT (slightly modified from what Ken posted):
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xalan="http://xml.apache.org/xslt"; >
<!-- The xalan param gets back indentation that seems to be broken
in the java api -->
<xsl:output method="xml" indent="yes" encoding="UTF-8"
xalan:indent-amount="4"/>
<xsl:strip-space elements="*" />
<xsl:template match="/">
<xsl:apply-templates />
</xsl:template>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()">
<xsl:sort select="@typeName"/>
<xsl:sort select="name(.)"/>
<xsl:sort />
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
When I run this on Ubuntu Linux 7.10 (fully updated) using xsltproc, I
encounter this bug:
https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/147144
Namely, it reports the error:
runtime error: file SortCollections.xsl line 40 element copy
Attribute nodes must be added before any child nodes to an element.
When I run this on Mac OS X 1.5 (Leopard -- fully updated) using
xsltproc, it does exactly what I want with no problems.
When I run this script from Java 1.6 (using JAXB) with the code
below, the identity transform does not copy all the attributes over.
I end up with missing attributes, and I have no idea why.
This behavior with Java is seen on both Windows XP platform and Ubuntu
Linux. We want to call the script from java -- since it is being used
with JAXB to serialize/de-serialize a collection, and then we use the
XSLT to sort it and do an XML-diff in unit tests to detect changes.
Does anyone have any workaround or solution to getting a consistent
solution ?? Thanks in advance! I have also posted below a sample XML
input file that causes this behavior.
--JAVA SNIPPET--
import javax.xml.bind.Marshaller;
import javax.xml.bind.JAXBSource;
import javax.xml.bind.JAXBContext;
import javax.xml.transform.Transformer;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
Object object; // the object to be marshalled to XML
OutputStream output; // the output stream
final Marshaller marshaller = getContext().createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
final JAXBSource source = new JAXBSource(marshaller, object);
final StreamResult result = new StreamResult(output);
// run XSLT script
final StreamSource stylesource = new
StreamSource(XmlReaderWriter.class.getResourceAsStream(XSLT));
final Transformer transformer =
TransformFactory.newInstance().newTransformer(stylesource);
transformer.transform(source, result);
--END JAVA SNIPPET--
<?xml version="1.0" encoding="UTF-8"?>
<DictionaryModel>
<DictionaryModelDescriptor about="modelName1/modelVersion1">
<modelName>modelName1</modelName>
<modelVersion>modelVersion1</modelVersion>
</DictionaryModelDescriptor>
<DictionaryParts>
<DictionaryPart abstract="false" typeName="part.full1">
<children/>
<parents/>
<DictionaryProperties/>
<feature>feature.empty3</feature>
<maxCardinality>2</maxCardinality>
<minCardinality>1</minCardinality>
<parentComposition>feature.empty2</parentComposition>
<role>role</role>
<sequence>1</sequence>
</DictionaryPart>
<DictionaryPart abstract="false" typeName="part.full5">
<children/>
<parents/>
<DictionaryProperties/>
<feature>feature.empty13</feature>
<maxCardinality>2</maxCardinality>
<minCardinality>1</minCardinality>
<parentComposition>feature.empty12</parentComposition>
<role>role</role>
<sequence>1</sequence>
</DictionaryPart>
</DictionaryParts>
<DictionaryAssociations>
<DictionaryAssociation abstract="false"
typeName="association.empty1">
<children/>
<parents/>
<DictionaryProperties/>
</DictionaryAssociation>
<DictionaryAssociation
compositionType="BIDIRECTIONAL_ASSOCIATION" abstract="false"
typeName="association.full2">
<children/>
<parents/>
<DictionaryProperties>
<DictionaryProperty>simple.property.empty4</DictionaryProperty>
<DictionaryProperty>composite.property.empty4</DictionaryProperty>
</DictionaryProperties>
<sourcePart>part.full2</sourcePart>
<targetPart>part.full3</targetPart>
<resolverStrategy>resolver.strategy</resolverStrategy>
</DictionaryAssociation>
</DictionaryAssociations>
<DictionaryFeatures>
<DictionaryFeature composite="false" abstract="false"
typeName="feature.empty1">
<children/>
<parents/>
<DictionaryProperties/>
<associations/>
<parentComposites/>
<parts/>
</DictionaryFeature>
<DictionaryFeature composite="true" compositionType="SEQUENCE"
abstract="true" typeName="feature.full8">
<children>
<child>feature.empty9</child>
</children>
<parents/>
<DictionaryProperties>
<DictionaryProperty>composite.property.empty5</DictionaryProperty>
<DictionaryProperty>simple.property.empty5</DictionaryProperty>
</DictionaryProperties>
<associations>
<association>association.empty3</association>
<association>association.empty4</association>
</associations>
<parentComposites>
<parentComposite>feature.empty10</parentComposite>
</parentComposites>
<parts>
<part>part.empty4</part>
</parts>
<code>code</code>
</DictionaryFeature>
</DictionaryFeatures>
<DictionaryPropertyNodes>
<DictionaryPropertyNode abstract="false"
typeName="property.node.empty1">
<children/>
<parents/>
<DictionaryProperties/>
</DictionaryPropertyNode>
<DictionaryPropertyNode abstract="false"
typeName="property.node.full3">
<children>
<child>property.node.empty4</child>
</children>
<parents>
<parent>property.node.empty5</parent>
</parents>
<DictionaryProperties>
<DictionaryProperty>composite.property.empty11</DictionaryProperty>
<DictionaryProperty>simple.property.empty8</DictionaryProperty>
</DictionaryProperties>
</DictionaryPropertyNode>
</DictionaryPropertyNodes>
<DictionaryProperties>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="CompositeDictionaryProperty" propertyType="COMPOSITE_ROOT"
inherited="false" typeName="composite.property.empty1">
<maxCardinality>2147483647</maxCardinality>
<minCardinality>-2147483648</minCardinality>
<children/>
</DictionaryProperty>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="CompositeDictionaryProperty" propertyType="COMPOSITE_ROOT"
inherited="false" typeName="composite.property.empty2">
<maxCardinality>2147483647</maxCardinality>
<minCardinality>-2147483648</minCardinality>
<children/>
</DictionaryProperty>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="CompositeDictionaryProperty" propertyType="COMPOSITE_ROOT"
inherited="false" typeName="composite.property.empty3">
<maxCardinality>2147483647</maxCardinality>
<minCardinality>-2147483648</minCardinality>
<children/>
</DictionaryProperty>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="CompositeDictionaryProperty" propertyType="COMPOSITE_CHILD"
inherited="true" typeName="composite.property.full6">
<code>code</code>
<maxCardinality>3</maxCardinality>
<minCardinality>2</minCardinality>
<parentObject>feature.empty14</parentObject>
<parentProperty>composite.property.empty8</parentProperty>
<rootProperty>composite.property.empty7</rootProperty>
<children>
<child>simple.property.empty6</child>
</children>
<propertyNode>property.node.empty2</propertyNode>
</DictionaryProperty>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="SimpleDictionaryProperty" propertyType="SIMPLE_ROOT"
inherited="false" typeName="simple.property.empty1">
<maxCardinality>2147483647</maxCardinality>
<minCardinality>-2147483648</minCardinality>
</DictionaryProperty>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="SimpleDictionaryProperty" propertyType="SIMPLE_ROOT"
inherited="false" typeName="simple.property.empty2">
<maxCardinality>2147483647</maxCardinality>
<minCardinality>-2147483648</minCardinality>
</DictionaryProperty>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="SimpleDictionaryProperty" propertyType="SIMPLE_ROOT"
inherited="false" typeName="simple.property.empty3">
<maxCardinality>2147483647</maxCardinality>
<minCardinality>-2147483648</minCardinality>
</DictionaryProperty>
<DictionaryProperty
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="SimpleDictionaryProperty" propertyType="SIMPLE_CHILD"
inherited="true" typeName="simple.property.full7">
<code>code</code>
<maxCardinality>2</maxCardinality>
<minCardinality>1</minCardinality>
<parentObject>feature.empty16</parentObject>
<parentProperty>composite.property.empty9</parentProperty>
<rootProperty>composite.property.empty10</rootProperty>
<defaultValue>default-value</defaultValue>
<dictionaryFeatureRange>feature.range2</dictionaryFeatureRange>
<referentFeature>feature.empty17</referentFeature>
<dictionaryValueRange>value.range1</dictionaryValueRange>
<valueTypeName>value-type-name</valueTypeName>
</DictionaryProperty>
</DictionaryProperties>
<DictionaryFeatureRanges>
<DictionaryFeatureRange typeName="feature.range1">
<DictionaryFeatures>
<DictionaryFeature>feature.empty11</DictionaryFeature>
</DictionaryFeatures>
</DictionaryFeatureRange>
</DictionaryFeatureRanges>
<DictionaryValueRanges>
<DictionaryValueRange typeName="value.range2">
<DictionaryRangeItems>
<DictionaryRangeItem>range.item3</DictionaryRangeItem>
</DictionaryRangeItems>
<valueTypeName>value-type-name</valueTypeName>
</DictionaryValueRange>
</DictionaryValueRanges>
<DictionaryRangeItems>
<DictionaryRangeItem typeName="range.item2">
<value>4</value>
</DictionaryRangeItem>
</DictionaryRangeItems>
<DictionaryValueTypeNames>
<DictionaryValueTypeName>a value type name</DictionaryValueTypeName>
<DictionaryValueTypeName>value-type-name</DictionaryValueTypeName>
</DictionaryValueTypeNames>
</DictionaryModel>
On Nov 28, 2007 5:46 PM, G. Ken Holman
<gkholman(_at_)cranesoftwrights(_dot_)com> wrote:
At 2007-11-28 17:04 -0500, Davis Ford wrote:
Hi, consider the following example:
...
I want to sort it as such
...
I am trying to come up with a generic XSLT solution that does not use
explicit element names, but only uses the sort select="name()", and it
should be recursive such that if say, element <A1> contained further
elements, then they would also be sorted by element name.
Finally, if the element names are the same, then it should sort them
by an attribute called "typeName".
Can anyone provide some help? Thank you in advance!
Am I missing something? This is a variant of a one-template identity
transform.
I hope the example below helps.
. . . . . . . . . . Ken
t:\ftemp>type davis.xml
<Collection>
<CollectionB>
<B2></B2>
<A2></A2>
<A1></A1>
<B1 typeName="2"></B1>
<B1 typeName="1"></B1>
</CollectionB>
<CollectionA>
<B2></B2>
<A2></A2>
<A1></A1>
<B1></B1>
</CollectionA>
</Collection>
t:\ftemp>type davis.xsl
<?xml version="1.0" encoding="US-ASCII"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
<xsl:output indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()">
<xsl:sort select="name(.)"/>
<xsl:sort select="@typeName"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
t:\ftemp>xslt davis.xml davis.xsl con
<?xml version="1.0" encoding="utf-8"?>
<Collection>
<CollectionA>
<A1/>
<A2/>
<B1/>
<B2/>
</CollectionA>
<CollectionB>
<A1/>
<A2/>
<B1 typeName="1"/>
<B1 typeName="2"/>
<B2/>
</CollectionB>
</Collection>
t:\ftemp>
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Wendell Piez
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Mulberry Technologies, Inc. http://www.mulberrytech.com
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