Package com.saxonica.xqj

This package contains an implementation of the XQJ specification defined in JSR 225.

See: Description

Interface Summary

Interface	Description
ObjectConverter	This interface is based on the "CommonHandler" concept defined in early drafts of XQJ.
SaxonXQItemAccessor	All Saxon implementations of XQItemAccessor must implement this interface

Class Summary

Class	Description
Closable	This class represents the common ability of many XQJ classes to be closed.
SaxonXQConnection	Saxon implementation of the XQL interface XQConnection.
SaxonXQDataFactory	Saxon implementation of the XQJ interface XQDataFactory.
SaxonXQDataSource	Saxon implementation of the XQJ XQDataSource interface.
SaxonXQDynamicContext	Saxon implementation of the XQJ DynamicContext interface
SaxonXQExpression	Saxon implementation of the XQJ XQExpression interface
SaxonXQForwardSequence	The class is a Saxon implementation of the XQJ interface XQResultSequence.
SaxonXQItem	This Saxon class is used to implement both the XQItem and XQResultItem interfaces in XQJ.
SaxonXQItemType	Saxon implementation of the XQJ XQItemType interface
SaxonXQMetaData	Saxon implementation of the XQMetaData interface
SaxonXQPreparedExpression	Saxon implementation of the XQJ interface XQPreparedExpression.
SaxonXQSequence	Saxon implementation of the XQSequence interface in XQJ, which represents an XDM sequence together with a current position.
SaxonXQSequenceType	Saxon implementation of the XQJ SequenceType interface
SaxonXQStaticContext	Saxon implementation of the XQJ XQStaticContext interface
StandardObjectConverter	This class provides all the conversion methods used to convert data between XDM values and Java values in the XQJ API.

Package com.saxonica.xqj Description

This package contains an implementation of the XQJ specification defined in JSR 225. This API is not yet part of the Java Standard Edition platform, but it is widely supported by a variety of Java-based XQuery engines.

Saxon's implementation of the XQDataSource class is net.sf.saxon.xqj.SaxonXQDataSource. Generally, this is the only class that applications need to access directly (all other access can be done by using standard XQJ interfaces). However, if there is a need to mix XQuery access with other Saxon functionality such as schema processing, then it is often useful to cast the XQJ objects to their underlying Saxon implementation classes, which make additional methods available.

In general it is not possible to mix Saxon implementation classes of the XQJ interface with implementation classes from other vendors. That is, if an interface specifies that a value of an XQJ type must be passed as an argument, Saxon in general requires the value to belong to a Saxon implementation of that interface.

Michael H. Kay
Saxonica Limited
30 July 2010