net.sf.saxon.xqj
Class StandardObjectConverter

java.lang.Object
  net.sf.saxon.xqj.StandardObjectConverter

All Implemented Interfaces:

ObjectConverter

public class StandardObjectConverter
extends Object
implements ObjectConverter

This class provides all the conversion methods used to convert data between XDM values and Java values in the XQJ API. At one time the XQJ specification defined such a class, and it has been retained in the Saxon implementation.

This handler implements the mappings defined in the XQJ specification. In addition, it defines the following mappings, which are applied after those defined in XQJ:

For fromObject:

• If the supplied object is an instance of javax.xml.transform.Source, a document node is constructed from the source and the resulting node is returned as the Item
• If the supplied object is an instance of javax.xml.stream.XMLStreamReader, a document node is constructed from the XMLStreamReader and the resulting node is returned as the Item
• If the supplied object is

Constructor Summary

StandardObjectConverter(SaxonXQDataFactory factory)
Create an instance of the class

Method Summary

Item	convertToItem(Object value) Convert a Java object to a Saxon Item
Item	convertToItem(Object value, javax.xml.xquery.XQItemType type) Convert a Java object to an Item, when a required type has been specified.
Object	toObject(javax.xml.xquery.XQItemAccessor xqItemAccessor) Convert an Item to a Java object

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardObjectConverter

public StandardObjectConverter(SaxonXQDataFactory factory)

Create an instance of the class

Parameters:

factory - the factory object

Method Detail

toObject

public Object toObject(javax.xml.xquery.XQItemAccessor xqItemAccessor)
                throws javax.xml.xquery.XQException

Description copied from interface: ObjectConverter

Convert an Item to a Java object

Specified by:

toObject in interface ObjectConverter

Parameters:

xqItemAccessor - the XQJ object representing the item to be converted

Returns:

the Java object that results from the conversion

Throws:

javax.xml.xquery.XQException

convertToItem

public Item convertToItem(Object value)
                   throws javax.xml.xquery.XQException

Convert a Java object to a Saxon Item

Specified by:

convertToItem in interface ObjectConverter

Parameters:

value - the Java object

Returns:

the corresponding Item

Throws:

javax.xml.xquery.XQException

convertToItem

public Item convertToItem(Object value,
                          javax.xml.xquery.XQItemType type)
                   throws javax.xml.xquery.XQException

Convert a Java object to an Item, when a required type has been specified. Note that Saxon only calls this method when none of the standard conversions defined in the XQJ specification is able to handle the object.

Specified by:

convertToItem in interface ObjectConverter

Parameters:

value - the supplied Java object

type - the required XPath data type

Returns:

the Item that results from the conversion

Throws:

javax.xml.xquery.XQException - if the Java object cannot be converted to an XQItem