ContextMappingFunction.java

package client.net.sf.saxon.ce.expr;
import client.net.sf.saxon.ce.om.SequenceIterator;
import client.net.sf.saxon.ce.trans.XPathException;

/**
 * ContextMappingFunction is an interface that must be satisfied by an object passed to a
 * ContextMappingIterator. It represents an object which, given an Item, can return a
 * SequenceIterator that delivers a sequence of zero or more Items.
 * <p>
 * This is a specialization of the more general MappingFunction class: it differs in that
 * each item being processed becomes the context item while it is being processed.
*/

public interface ContextMappingFunction {

    /**
    * Map one item to a sequence.
    * @param context The processing context. The item to be mapped is the context item identified
    * from this context: the values of position() and last() also relate to the set of items being mapped
    * @return a SequenceIterator over the sequence of items that the supplied input
    * item maps to
    */

    public SequenceIterator map(XPathContext context) throws XPathException;

}

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// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.