XML deserialization : same localname but differents namespaces.

[Adrien Quentin]

Hello,

I'm trying to use jackson deserialization to parse and map java object. Work fine except when the xml contains two same local names in differents namespaces, like this : 

<wfs:FeatureCollection>

<wfs:member>

<gsmlp:BoreholeView gml:id="XXXXXX">

<gml:description>Borehole description</gml:description>

<gml:identifier codeSpace="http://www.ietf.org/rfc/rfc2616">

XXXXX

</gml:identifier>

<gsmlp:identifier>

XXXXX2

</gsmlp:identifier>

</gsmlp:BoreholeView>

</wfs:member>

</wfs:FeatureCollection>
Setup my bean (boreholeview) like this : 

@JacksonXmlElementWrapper(namespace = "gsmlp",localName = "identifier")
String identifier;

@JacksonXmlElementWrapper(namespace = "gml",localName = "identifier")
String gmlIdentifier;

jackson raised the exception below, it seems that the uniqueness is ensure by localname without the use of namespace, is there any parameter to solve this ? 

com.fasterxml.jackson.databind.JsonMappingException: Duplicate property 'identifier' for [simple type, class fr.brgm.wfsBoreHoleViewHarvester.model.xmlBean.BoreHoleView]

 at [Source: com.ctc.wstx.sr.ValidatingStreamReader@6200f9cb; line: 1, column: 39]

at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:305)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:268)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)

at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)

at com.fasterxml.jackson.databind.DeserializationContext.findNonContextualValueDeserializer(DeserializationContext.java:466)

at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.resolve(BeanDeserializerBase.java:479)

at com.fasterxml.jackson.databind.deser.std.DelegatingDeserializer.resolve(DelegatingDeserializer.java:61)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:293)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)

at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)

at com.fasterxml.jackson.databind.DeserializationContext.findNonContextualValueDeserializer(DeserializationContext.java:466)

at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.resolve(BeanDeserializerBase.java:479)

at com.fasterxml.jackson.databind.deser.std.DelegatingDeserializer.resolve(DelegatingDeserializer.java:61)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:293)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)

at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)

at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:476)

at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(ObjectMapper.java:3915)

at com.fasterxml.jackson.databind.ObjectMapper._readValue(ObjectMapper.java:3781)

at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2181)

at com.fasterxml.jackson.dataformat.xml.XmlMapper.readValue(XmlMapper.java:221)

at com.fasterxml.jackson.dataformat.xml.XmlMapper.readValue(XmlMapper.java:196)

at fr.brgm.wfsBoreHoleViewHarvester.parse.XmlParserMapper.parse(XmlParserMapper.java:21)

at fr.brgm.wfsConsumer.xmlParsingMappingTest.testxmlParsingFullPage1000elements(xmlParsingMappingTest.java:54)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at junit.framework.TestCase.runTest(TestCase.java:176)

at junit.framework.TestCase.runBare(TestCase.java:141)

at junit.framework.TestResult$1.protect(TestResult.java:122)

at junit.framework.TestResult.runProtected(TestResult.java:142)

at junit.framework.TestResult.run(TestResult.java:125)

at junit.framework.TestCase.run(TestCase.java:129)

at junit.framework.TestSuite.runTest(TestSuite.java:252)

at junit.framework.TestSuite.run(TestSuite.java:247)

at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:86)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)

at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Caused by: java.lang.IllegalArgumentException: Duplicate property 'identifier' for [simple type, class fr.brgm.wfsBoreHoleViewHarvester.model.xmlBean.BoreHoleView]

at com.fasterxml.jackson.databind.deser.BeanDeserializerBuilder.addProperty(BeanDeserializerBuilder.java:172)

at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.addBeanProps(BeanDeserializerFactory.java:612)

at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:258)

at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:173)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:403)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:349)

at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)

... 40 more

thank you

Kind Regards

Adrien.

[Tatu Saloranta]

On Thu, Jul 20, 2017 at 6:06 AM, Adrien Quentin <adri1....@gmail.com> wrote:

Hello,

I'm trying to use jackson deserialization to parse and map java object. Work fine except when the xml contains two same local names in differents namespaces, like this : 

<wfs:FeatureCollection>

<wfs:member>

<gsmlp:BoreholeView gml:id="XXXXXX">

<gml:description>Borehole description</gml:description>

<gml:identifier codeSpace="http://www.ietf.org/rfc/rfc2616">

XXXXX

</gml:identifier>

<gsmlp:identifier>

XXXXX2

</gsmlp:identifier>

</gsmlp:BoreholeView>

</wfs:member>

</wfs:FeatureCollection>
Setup my bean (boreholeview) like this : 

@JacksonXmlElementWrapper(namespace = "gsmlp",localName = "identifier")
String identifier;

@JacksonXmlElementWrapper(namespace = "gml",localName = "identifier")
String gmlIdentifier;

jackson raised the exception below, it seems that the uniqueness is ensure by localname without the use of namespace, is there any parameter to solve this ? 

Unfortunately this is a known but unsolved problem -- local names have to be unique as is.

A related issue is at:

https://github.com/FasterXML/jackson-dataformat-xml/issues/27

About the only work-around currently would be to disable namespace handling of underlying parser (Woodstox, or other Stax implementation),

in which case property names would need to include namespace prefix explicitly.

But it would work.

-+ Tatu +-