DynamicJAXBContextFactory (EclipseLink 2.6.1, API Reference)

java.lang.Object
- org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContextFactory

```
public class DynamicJAXBContextFactory
extends java.lang.Object
```
DynamicJAXBContextFactory allows the user to create a DynamicJAXBContext without having realized Java classes available on the classpath. During context creation, the user's metadata will be analyzed, and in-memory classes will be generated.

Objects that are returned by EclipseLink unmarshal methods will be subclasses of DynamicEntity. DynamicEntities offer a simple get(propertyName) / set(propertyName, propertyValue) API to manipulate their data.

Example:

ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); InputStream iStream = classLoader.getResourceAsStream("resource/MySchema.xsd"); Map<String, Object> properties = new HashMap<String, Object>(); properties.put(DynamicJAXBContextFactory.XML_SCHEMA_KEY, iStream); DynamicJAXBContext jaxbContext = (DynamicJAXBContext) JAXBContext.newInstance("org.example", classLoader, properties); DynamicEntity employee = jaxbContext.newDynamicEntity("org.example.Employee"); employee.set("firstName", "Bob"); employee.set("lastName", "Barker"); jaxbContext.createMarshaller().(employee, System.out);

See Also:
JAXBContext, DynamicJAXBContext, DynamicEntity, DynamicType
Author:

rbarkhouse

Since:

EclipseLink 2.1

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`ENTITY_RESOLVER_KEY`
`static java.lang.String`	`EXTERNAL_BINDINGS_KEY`
`static java.lang.String`	`SCHEMAMETADATA_CLASS_NAME`
`static java.lang.String`	`XML_SCHEMA_KEY`

Constructor Summary

Constructors
Constructor and Description

DynamicJAXBContextFactory()

Constructors
Constructor and Description
`DynamicJAXBContextFactory()`

Method Summary

Methods
Modifier and Type	Method and Description
`static DynamicJAXBContext`	`createContext(java.lang.Class<?>[] classes, java.util.Map<java.lang.String,java.lang.Object> properties)` Unsupported Operation.
`static DynamicJAXBContext`	`createContext(java.lang.String contextPath, java.lang.ClassLoader classLoader, java.util.Map<java.lang.String,java.lang.Object> properties)` Create a `DynamicJAXBContext`, using either an XML Schema, EclipseLink OXM file, or EclipseLink `sessions.xml` as the metadata source.
`static DynamicJAXBContext`	`createContextFromOXM(java.lang.ClassLoader classLoader, java.util.Map<java.lang.String,?> properties)` Create a `DynamicJAXBContext`, using an EclipseLink OXM file as the metadata source.
`static DynamicJAXBContext`	`createContextFromXSD(java.io.InputStream schemaStream, org.xml.sax.EntityResolver resolver, java.lang.ClassLoader classLoader, java.util.Map<java.lang.String,?> properties)` Create a `DynamicJAXBContext`, using XML Schema as the metadata source.
`static DynamicJAXBContext`	`createContextFromXSD(org.w3c.dom.Node schemaDOM, org.xml.sax.EntityResolver resolver, java.lang.ClassLoader classLoader, java.util.Map<java.lang.String,java.lang.Object> properties)` Create a `DynamicJAXBContext`, using XML Schema as the metadata source.
`static DynamicJAXBContext`	`createContextFromXSD(javax.xml.transform.Source schemaSource, org.xml.sax.EntityResolver resolver, java.lang.ClassLoader classLoader, java.util.Map<java.lang.String,java.lang.Object> properties)` Create a `DynamicJAXBContext`, using XML Schema as the metadata source.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - XML_SCHEMA_KEY
```
public static final java.lang.String XML_SCHEMA_KEY
```
    See Also:
    Constant Field Values
  - ENTITY_RESOLVER_KEY
```
public static final java.lang.String ENTITY_RESOLVER_KEY
```
    See Also:
    Constant Field Values
  - EXTERNAL_BINDINGS_KEY
```
public static final java.lang.String EXTERNAL_BINDINGS_KEY
```
    See Also:
    Constant Field Values
  - SCHEMAMETADATA_CLASS_NAME
```
public static final java.lang.String SCHEMAMETADATA_CLASS_NAME
```
    See Also:
    Constant Field Values
- Constructor Detail
  - DynamicJAXBContextFactory
```
public DynamicJAXBContextFactory()
```
- Method Detail
  - createContext
```
public static DynamicJAXBContext createContext(java.lang.String contextPath,
                               java.lang.ClassLoader classLoader,
                               java.util.Map<java.lang.String,java.lang.Object> properties)
                                        throws JAXBException
```
    Create a DynamicJAXBContext, using either an XML Schema, EclipseLink OXM file, or EclipseLink sessions.xml as the metadata source. This creation method will be called if the user calls the newInstance() method on javax.xml.bind.JAXBContext, and has specified javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.DynamicJAXBContextFactory in their jaxb.properties file.
    -- Context Creation From XML Schema --
    The properties map must contain the following key/value pairs:
    
    DynamicJAXBContextFactory.XML_SCHEMA_KEY
    Either a org.w3c.dom.Node, javax.xml.transform.Source, or java.io.InputStream pointing to the XML Schema
    DynamicJAXBContextFactory.ENTITY_RESOLVER_KEY
    An org.xml.sax.EntityResolver, used to resolve schema imports. Can be null.
    Example:
```
 ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
 InputStream iStream = classLoader.getResourceAsStream("resource/MySchema.xsd");

 Map<String, Object> properties = new HashMap<String, Object>();
 properties.put(DynamicJAXBContextFactory.XML_SCHEMA_KEY, iStream);

 DynamicJAXBContext jaxbContext = (DynamicJAXBContext) JAXBContext.newInstance("org.example", classLoader, properties);
 DynamicEntity emp = jaxbContext.newDynamicEntity("org.example.Employee");
 ...
 
```
    Context Creation From EclipseLink OXM:
    The properties map must contain the key JAXBContextProperties.OXM_METADATA_SOURCE, which can have several possible values:
    - One of the following, pointing to your OXM file: java.io.File, java.io.InputStream, java.io.Reader, java.net.URL,
      javax.xml.stream.XMLEventReader, javax.xml.stream.XMLStreamReader, javax.xml.transform.Source,
      org.w3c.dom.Node, or org.xml.sax.InputSource.
    - A List of objects from the set above.
    - A Map<String, Object>, where String is a package name, and Object is the pointer to the OXM file, from the set
      of possibilities above. If using this option, a package-name element is not required in the xml-bindings element of your OXM file.
    Example:
```
 ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
 InputStream iStream = classLoader.getResourceAsStream("resource/eclipselink-oxm.xml");

 Map<String, Object> properties = new HashMap<String, Object>();
 properties.put(JAXBContextProperties.OXM_METADATA_SOURCE, iStream);

 DynamicJAXBContext jaxbContext = (DynamicJAXBContext) JAXBContext.newInstance("org.example", classLoader, properties);
 DynamicEntity emp = jaxbContext.newDynamicEntity("org.example.Employee");
 ...
 
```
    Context Creation From EclipseLink sessions.xml:
    The sessionNames parameter is a colon-delimited list of session names within the sessions.xml file. Descriptors in this session's Project must not have javaClass set, but must have javaClassName set.
    Example:
```
 ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

 DynamicJAXBContext jaxbContext = (DynamicJAXBContext) JAXBContext.newInstance("org.example", classLoader, null);
 DynamicEntity emp = jaxbContext.newDynamicEntity("org.example.Employee");
 ...
 
```
    Parameters:
    contextPath - A colon-delimited String specifying the packages containing jaxb.properties. If bootstrapping from EclipseLink sessions.xml, this will also be the name(s) of your sessions.
    classLoader - The application's current class loader, which will be used to first lookup classes to see if they exist before new DynamicTypes are generated. Can be null, in which case Thread.currentThread().getContextClassLoader() will be used.
    properties - Map of properties to use when creating a new DynamicJAXBContext. Can be null if bootstrapping from sessions.xml.
    
    Returns:
    A new instance of DynamicJAXBContext.
    
    Throws:
    
    JAXBException - if an error was encountered while creating the DynamicJAXBContext.
  - createContext
```
public static DynamicJAXBContext createContext(java.lang.Class<?>[] classes,
                               java.util.Map<java.lang.String,java.lang.Object> properties)
                                        throws JAXBException
```
    Unsupported Operation. DynamicJAXBConexts can not be created from concrete classes. Use the standard JAXBContext to create a context from existing Classes.
    
    Throws:
    
    JAXBException
    See Also:
    JAXBContext
  - createContextFromXSD
```
public static DynamicJAXBContext createContextFromXSD(org.w3c.dom.Node schemaDOM,
                                      org.xml.sax.EntityResolver resolver,
                                      java.lang.ClassLoader classLoader,
                                      java.util.Map<java.lang.String,java.lang.Object> properties)
                                               throws JAXBException
```
    Create a DynamicJAXBContext, using XML Schema as the metadata source.
    
    Parameters:
    schemaDOM - org.w3c.dom.Node representing the XML Schema.
    resolver - An org.xml.sax.EntityResolver, used to resolve schema imports. Can be null.
    classLoader - The application's current class loader, which will be used to first lookup classes to see if they exist before new DynamicTypes are generated. Can be null, in which case Thread.currentThread().getContextClassLoader() will be used.
    properties - Map of properties to use when creating a new DynamicJAXBContext. Can be null.
    
    Returns:
    A new instance of DynamicJAXBContext.
    
    Throws:
    
    JAXBException - if an error was encountered while creating the DynamicJAXBContext.
  - createContextFromXSD
```
public static DynamicJAXBContext createContextFromXSD(java.io.InputStream schemaStream,
                                      org.xml.sax.EntityResolver resolver,
                                      java.lang.ClassLoader classLoader,
                                      java.util.Map<java.lang.String,?> properties)
                                               throws JAXBException
```
    Create a DynamicJAXBContext, using XML Schema as the metadata source.
    
    Parameters:
    schemaStream - java.io.InputStream from which to read the XML Schema.
    resolver - An org.xml.sax.EntityResolver, used to resolve schema imports. Can be null.
    classLoader - The application's current class loader, which will be used to first lookup classes to see if they exist before new DynamicTypes are generated. Can be null, in which case Thread.currentThread().getContextClassLoader() will be used.
    properties - Map of properties to use when creating a new DynamicJAXBContext. Can be null.
    
    Returns:
    A new instance of DynamicJAXBContext.
    
    Throws:
    
    JAXBException - if an error was encountered while creating the DynamicJAXBContext.
  - createContextFromXSD
```
public static DynamicJAXBContext createContextFromXSD(javax.xml.transform.Source schemaSource,
                                      org.xml.sax.EntityResolver resolver,
                                      java.lang.ClassLoader classLoader,
                                      java.util.Map<java.lang.String,java.lang.Object> properties)
                                               throws JAXBException
```
    Create a DynamicJAXBContext, using XML Schema as the metadata source.
    
    Parameters:
    schemaSource - javax.xml.transform.Source from which to read the XML Schema.
    resolver - An org.xml.sax.EntityResolver, used to resolve schema imports. Can be null.
    classLoader - The application's current class loader, which will be used to first lookup classes to see if they exist before new DynamicTypes are generated. Can be null, in which case Thread.currentThread().getContextClassLoader() will be used.
    properties - Map of properties to use when creating a new DynamicJAXBContext. Can be null.
    
    Returns:
    A new instance of DynamicJAXBContext.
    
    Throws:
    
    JAXBException - if an error was encountered while creating the DynamicJAXBContext.
  - createContextFromOXM
```
public static DynamicJAXBContext createContextFromOXM(java.lang.ClassLoader classLoader,
                                      java.util.Map<java.lang.String,?> properties)
                                               throws JAXBException
```
    Create a DynamicJAXBContext, using an EclipseLink OXM file as the metadata source.
    Parameters:
    classLoader - The application's current class loader, which will be used to first lookup classes to see if they exist before new DynamicTypes are generated. Can be null, in which case Thread.currentThread().getContextClassLoader() will be used.
    properties - Map of properties to use when creating a new DynamicJAXBContext. This map must contain a key of JAXBContextProperties.OXM_METADATA_SOURCE, which can have several possible values:
    
    One of the following, pointing to your OXM file: java.io.File, java.io.InputStream, java.io.Reader, java.net.URL,
    javax.xml.stream.XMLEventReader, javax.xml.stream.XMLStreamReader, javax.xml.transform.Source,
    org.w3c.dom.Node, or org.xml.sax.InputSource.
    A List of objects from the set above.
    A Map<String, Object>, where String is a package name, and Object is the pointer to the OXM file, from the set
    of possibilities above. If using this option, a package-name element is not required in the xml-bindings element of your OXM file.
    Returns:
    A new instance of DynamicJAXBContext.
    
    Throws:
    
    JAXBException - if an error was encountered while creating the DynamicJAXBContext.

Class DynamicJAXBContextFactory

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

XML_SCHEMA_KEY

ENTITY_RESOLVER_KEY

EXTERNAL_BINDINGS_KEY

SCHEMAMETADATA_CLASS_NAME

Constructor Detail

DynamicJAXBContextFactory

Method Detail

createContext

createContext

createContextFromXSD

createContextFromXSD

createContextFromXSD

createContextFromOXM