Hi,
I'm running into an issue during unmarshalling using references, seemingly
because I have duplicate IDs across objects of different type. Apologize in
advance if this is a FAQ; I searched the documentation and the web and didn't
see anything that points me in the right direction.
At first I was getting a "duplicate ID" error during unmarshalling, so I tried
setting org.exolab.castor.xml.lenient.id.validation to true. This got me
around
the duplicate ID checking, but then I see the exception:
Caused by: java.lang.IllegalArgumentException: Type conversion error: could not
set value
of publisher(com.foo.catalog.Publisher) with value of type
com.foo.catalog.Title
at
org.exolab.castor.mapping.loader.FieldHandlerImpl.setValue(FieldHandlerImpl.java:531)
at
org.exolab.castor.xml.UnmarshalHandler.processIDREF(UnmarshalHandler.java:3316)
at
org.exolab.castor.xml.UnmarshalHandler.processAttribute(UnmarshalHandler.java:3073)
at
org.exolab.castor.xml.UnmarshalHandler.processAttributes(UnmarshalHandler.java:2777)
at
org.exolab.castor.xml.UnmarshalHandler.startElement(UnmarshalHandler.java:2408)
at
org.exolab.castor.xml.UnmarshalHandler.startElement(UnmarshalHandler.java:1436)
It seems that this occurs because there's both a publisher and a title whose
identity is 1.
Is there a way to qualify the IDs during marshalling so that this does not
occur? The IDs on these objects are coming from the primary keys of the
database under the ORM I'm using.
Thanks in advance!
-- John Logan
MAPPING:
<?xml version="1.0"?>
<!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.org/mapping.dtd";;>
<mapping>
<description>test mapping</description>
<class name="com.foo.catalog.Publisher" identity="id"
auto-complete="true">
<field name="id" type="long">
<bind-xml name="publisherId" node="attribute"/>
</field>
</class>
<class name="com.foo.catalog.Category" identity="id"
auto-complete="true">
<field name="id" type="long">
<bind-xml name="categoryId" node="attribute"/>
</field>
</class>
<class name="com.foo.catalog.Title" identity="id" auto-complete="true">
<field name="id" type="long">
<bind-xml name="titleId" node="attribute"/>
</field>
<field name="publisher" type="com.foo.catalog.Publisher">
<bind-xml name="publisher" node="attribute" reference="true"/>
</field>
<field name="categories" type="com.foo.catalog.Category"
collection="collection">
<bind-xml name="category" node="element" reference="true"/>
</field>
</class>
</mapping>
MARSHALLED XML SAMPLE:
<?xml version="1.0" encoding="UTF-8"?>
<catalog>
<publisher publisherId="1">
<name>A</name>
</publisher>
<publisher publisherId="2">
<name>B</name>
</publisher>
<publisher publisherId="3">
<name>C</name>
</publisher>
<publisher publisherId="4">
<name>D</name>
</publisher>
<category categoryId="2016">
<name>fashion</name>
</category>
<category categoryId="2017">
<name>parenting</name>
</category>
<category categoryId="2018">
<name>sports</name>
</category>
<title publisher="1" titleId="1">
<category>2018</category>
<category>2017</category>
<category>2016</category>
<name>E</name>
<description>title description</description>
</title>
<title publisher="1" titleId="2">
<category>2018</category>
<category>2016</category>
<name>F</name>
<description>title description</description>
</title>
<title publisher="2" titleId="3">
<category>2016</category>
<name>G</name>
<description>title description</description>
</title>
<title publisher="2" titleId="4">
<category>2017</category>
<name>H</name>
<description>title description</description>
</title>
<title publisher="3" titleId="5">
<category>2017</category>
<name>I</name>
<description>title description</description>
</title>
<title publisher="3" titleId="6">
<category>2017</category>
<name>J</name>
<description>title description</description>
</title>
<title publisher="3" titleId="7">
<category>2018</category>
<name>K</name>
<description>title description</description>
</title>
<title publisher="4" titleId="8">
<name>L</name>
<description>title description</description>
</title>
</catalog>
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