ValueOf.java example

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orbeon-forms-master
/**
 * Copyright (C) 2010 Orbeon, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the
 * GNU Lesser General Public License as published by the Free Software Foundation; either version
 * 2.1 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
 */
package org.orbeon.oxf.transformer.xupdate.statement;

import org.orbeon.jaxen.NamespaceContext;
import org.orbeon.oxf.transformer.xupdate.DocumentContext;
import org.orbeon.oxf.transformer.xupdate.Statement;
import org.orbeon.oxf.transformer.xupdate.VariableContextImpl;
import org.orbeon.oxf.transformer.xupdate.dom4j.Dom4jUtils;
import org.orbeon.oxf.xml.dom4j.LocationData;

import javax.xml.transform.URIResolver;

public class ValueOf extends Statement {
    private String select;
    private NamespaceContext namespaceContext;

    public ValueOf(LocationData locationData, String select, NamespaceContext namespaceContext) {
        super(locationData);
        this.select = select;
        this.namespaceContext = namespaceContext;
    }

    public Object execute(final URIResolver uriResolver, Object context, VariableContextImpl variableContext, DocumentContext documentContext) {
        Object selectedObject = Utils.evaluate(uriResolver, context, variableContext, documentContext, getLocationData(), select, namespaceContext);
        return Dom4jUtils.createXPath("string()").evaluate(selectedObject);
    }
}