Difference between revisions of "EclipseLink/Examples/MOXy/Dynamic/XmlToDynamicEntity"

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(Unmarshal DynamicEntities from XML)
(XML Document)
 
(2 intermediate revisions by one user not shown)
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Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
 
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
 
DynamicEntity customer = (DynamicEntity) unmarshaller.unmarshal(xmlInputStream);
 
DynamicEntity customer = (DynamicEntity) unmarshaller.unmarshal(xmlInputStream);
 +
</source>
 +
 +
==Get Data from the DynamicEntity==
 +
DynamicEntity offers property based data access, get("name") instead of getName().
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<source lang="java">
 +
System.out.println(customer.<String>get("name"));
 +
</source>
 +
 +
==Get Data using DynamicType==
 +
Instances of DynamicEntity have a corresponding DynamicType.  DynamicType can be used to introspec the DynamicEntity.
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<source lang="java">
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DynamicType addressType = jaxbContext.getDynamicType("org.example.Address");
 +
 +
DynamicEntity address = customer.<DynamicEntity>get("address");
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for(String propertyName: addressType.getPropertiesNames()) {
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    System.out.println(address.get(propertyName));
 +
}
 
</source>
 
</source>
  
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</customer>
 
</customer>
 
</source>
 
</source>
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 +
==Next Steps==
 +
Next we will learn how to marshal instances of DynamicEntity to XML, see[[EclipseLink/Examples/MOXy/Dynamic/DynamicEntityToXml|DynamicEntity to XML]].

Latest revision as of 12:24, 24 June 2010

Contents

[edit] Overview

In this example you will learn how to unmarshal dynamic entities from XML.

[edit] Unmarshal DynamicEntities from XML

The Unmarshaller obtained from the DynamicJAXBContext is a standard unmarshaller, and can be used normally to unmarshal instances of DynamicEntity.

FileInputStream xmlInputStream = new FileInputStream("src/example/dynamic/customer.xml");
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
DynamicEntity customer = (DynamicEntity) unmarshaller.unmarshal(xmlInputStream);

[edit] Get Data from the DynamicEntity

DynamicEntity offers property based data access, get("name") instead of getName().

System.out.println(customer.<String>get("name"));

[edit] Get Data using DynamicType

Instances of DynamicEntity have a corresponding DynamicType. DynamicType can be used to introspec the DynamicEntity.

DynamicType addressType = jaxbContext.getDynamicType("org.example.Address");
 
DynamicEntity address = customer.<DynamicEntity>get("address");
for(String propertyName: addressType.getPropertiesNames()) {
    System.out.println(address.get(propertyName));
}

[edit] XML Document

Below is a sample XML document for this example.

<?xml version="1.0" encoding="UTF-8"?>
<customer xmlns="www.example.org">
   <name>Jane Doe</name>
   <address>
      <street>1 Any Street</street>
      <city>Any Town</city>
   </address>
</customer>

[edit] Next Steps

Next we will learn how to marshal instances of DynamicEntity to XML, seeDynamicEntity to XML.