Package org.apache.openjpa.xmlstore

Class XMLFileHandler

java.lang.Object

org.apache.openjpa.xmlstore.XMLFileHandler

public class XMLFileHandler
extends java.lang.Object

Stores ObjectData objects by serializing a collection of them into and out of an XML file.

Constructor Summary

Constructors

Constructor	Description
XMLFileHandler(XMLConfiguration conf)	Constructor; supply configuration.

Method Summary

Modifier and Type	Method	Description
java.util.Collection	load(ClassMetaData meta)	Loads all instances of meta into a list of objects.
void	store(ClassMetaData meta, java.util.Collection datas)	Stores all instances in datas into the appropriate file, as dictated by meta.
void	writeDataValue(java.io.Writer out, int type, java.lang.Object val)	Write out the data value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XMLFileHandler

public XMLFileHandler(XMLConfiguration conf)

Constructor; supply configuration.

Method Detail

load

public java.util.Collection load(ClassMetaData meta)

Loads all instances of meta into a list of objects. The given meta must represent a least-derived persistence-capable type.

store

public void store(ClassMetaData meta,
                  java.util.Collection datas)

Stores all instances in datas into the appropriate file, as dictated by meta.

Parameters:

meta - the least-derived type of the instances being stored

datas - a collection of ObjectData instances, each of which represents an object of type meta

writeDataValue

public void writeDataValue(java.io.Writer out,
                           int type,
                           java.lang.Object val)
                    throws java.io.IOException

Write out the data value. This method writes nulls as "null", serializes (using Java serialization and base16 encoding) out non- primitives/boxed primitives and non-persistent types, and writes primitives/boxed primitives and oids using their toString.

Throws:

java.io.IOException