JAXBReader (dom4j 1.6.1 API)

dom4j


org.dom4j.jaxb Class JAXBReader

java.lang.Object
  extended byorg.dom4j.jaxb.JAXBSupport
      extended byorg.dom4j.jaxb.JAXBReader

public class JAXBReader
extends org.dom4j.jaxb.JAXBSupport

Reads an XML document and creates a DOM4J tree from SAX parsing events. JAXBObjectHandlerobjects can be registered to automatically receive unmarshalled XML fragments. Registered implementations are notified when a certain element path is encountered

Author:
Wonne Keysers (Realsoftware.be)
See Also:
SAXReader, JAXBContext

Constructor Summary
JAXBReader(String contextPath)
          Creates a new JAXBReader for the given JAXB context path.
JAXBReader(String contextPath, ClassLoader classloader)
          Creates a new JAXBReader for the given JAXB context path, using the specified Classloader.
 
Method Summary
 void addHandler(String path, ElementHandler handler)
          Adds the ElementHandler to be called when the specified path is encounted.
 void addObjectHandler(String path, JAXBObjectHandler handler)
          Registers a JAXBObjectHandlerthat will be supplied with the unmarshalled representation of the xml fragment whenever the specified path is encounted.
 boolean isPruneElements()
          When 'true', the DOM4J document will not be kept in memory while parsing.
protected  Element marshal(javax.xml.bind.Element element)
          Marshals the given Elementin to its DOM4J counterpart.
 Document read(File source)
          Parses the specified File
 Document read(File file, java.nio.charset.Charset charset)
          Parses the specified File, using the given Charset.
 Document read(InputSource source)
          Parses the specified InputSource
 Document read(InputStream source)
          Parses the specified InputStream
 Document read(InputStream source, String systemId)
          Parses the specified InputStream
 Document read(Reader source)
          Parses the specified Reader
 Document read(Reader source, String systemId)
          Parses the specified Reader
 Document read(String source)
          Parses the the given URL or filename.
 Document read(URL source)
          Parses the the given URL.
 void removeHandler(String path)
          Removes the ElementHandler from the event based processor, for the specified path.
 void removeObjectHandler(String path)
          Removes the JAXBObjectHandlerfrom the event based processor, for the specified element path.
 void resetHandlers()
          Removes all registered JAXBObjectHandlerand ElementHandler instances from the event based processor.
 void setPruneElements(boolean pruneElements)
          Set to true when DOM4J elements must immediately be pruned from the tree.
protected  javax.xml.bind.Element unmarshal(Element element)
          Unmarshalls the specified DOM4J Elementinto a Element
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

JAXBReader

public JAXBReader(String contextPath)
Creates a new JAXBReader for the given JAXB context path. This is the Java package where JAXB can find the generated XML classes. This package MUST contain jaxb.properties!

Parameters:
contextPath - context path to be used
See Also:
JAXBContext

JAXBReader

public JAXBReader(String contextPath,
                  ClassLoader classloader)
Creates a new JAXBReader for the given JAXB context path, using the specified Classloader. This is the Java package where JAXB can find the generated XML classes. This package MUST contain jaxb.properties!

Parameters:
contextPath - to be used
classloader - to be used
See Also:
JAXBContext
Method Detail

read

public Document read(File source)
              throws DocumentException
Parses the specified File

Parameters:
source - the file to parse
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(File file,
                     java.nio.charset.Charset charset)
              throws DocumentException
Parses the specified File, using the given Charset.

Parameters:
file - the file to parse
charset - the charset to be used
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(InputSource source)
              throws DocumentException
Parses the specified InputSource

Parameters:
source - the source to parse
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(InputStream source)
              throws DocumentException
Parses the specified InputStream

Parameters:
source - the input stream to parse
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(InputStream source,
                     String systemId)
              throws DocumentException
Parses the specified InputStream

Parameters:
source - the input stream to parse
systemId - is the URI for the input
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(Reader source)
              throws DocumentException
Parses the specified Reader

Parameters:
source - the input reader to use
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(Reader source,
                     String systemId)
              throws DocumentException
Parses the specified Reader

Parameters:
source - the input reader to parse
systemId - is the URI for the input
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(String source)
              throws DocumentException
Parses the the given URL or filename.

Parameters:
source - the location to parse
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

read

public Document read(URL source)
              throws DocumentException
Parses the the given URL.

Parameters:
source - the URL to parse
Returns:
the resulting DOM4J document
Throws:
DocumentException - when an error occurs while parsing

addObjectHandler

public void addObjectHandler(String path,
                             JAXBObjectHandler handler)
Registers a JAXBObjectHandlerthat will be supplied with the unmarshalled representation of the xml fragment whenever the specified path is encounted.

Parameters:
path - the path to listen for
handler - the handler to be notified

removeObjectHandler

public void removeObjectHandler(String path)
Removes the JAXBObjectHandlerfrom the event based processor, for the specified element path.

Parameters:
path - The path to remove the JAXBObjectHandlerfor

addHandler

public void addHandler(String path,
                       ElementHandler handler)
Adds the ElementHandler to be called when the specified path is encounted.

Parameters:
path - is the path to be handled
handler - is the ElementHandler to be called by the event based processor.

removeHandler

public void removeHandler(String path)
Removes the ElementHandler from the event based processor, for the specified path.

Parameters:
path - is the path to remove the ElementHandler for.

resetHandlers

public void resetHandlers()
Removes all registered JAXBObjectHandlerand ElementHandler instances from the event based processor.


isPruneElements

public boolean isPruneElements()
When 'true', the DOM4J document will not be kept in memory while parsing.

Returns:
Returns the pruneElements.

setPruneElements

public void setPruneElements(boolean pruneElements)
Set to true when DOM4J elements must immediately be pruned from the tree. The Documentwill not be available afterwards!

Parameters:
pruneElements -

marshal

protected Element marshal(javax.xml.bind.Element element)
                   throws javax.xml.bind.JAXBException
Marshals the given Elementin to its DOM4J counterpart.

Parameters:
element - JAXB Element to be marshalled
Returns:
the marshalled DOM4J Element
Throws:
javax.xml.bind.JAXBException - when an error occurs

unmarshal

protected javax.xml.bind.Element unmarshal(Element element)
                                    throws javax.xml.bind.JAXBException
Unmarshalls the specified DOM4J Elementinto a Element

Parameters:
element - the DOM4J element to unmarshall
Returns:
the unmarshalled JAXB object
Throws:
javax.xml.bind.JAXBException - when an error occurs


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