ItemMappingFunction.java

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

/**
 * ItemMappingFunction is an interface that must be satisfied by an object passed to a
 * ItemMappingIterator. It represents an object which, given an Item, can return either
 * another Item, or null.
*/

public interface ItemMappingFunction {

    /**
    * Map one item to another item.
    * @param item The input item to be mapped.
    * @return either the output item, or null.
    */

    public Item mapItem(Item item) throws XPathException;

}

// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. 
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.