* Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *      http://www.apache.org/licenses/LICENSE-2.0

import com.sun.org.apache.xalan.internal.utils.FeatureManager;

import javax.xml.transform.TransformerException;

import javax.xml.xpath.XPathConstants;

import javax.xml.xpath.XPathEvaluationResult;

import javax.xml.xpath.XPathExpression;

import org.w3c.dom.Document;

public class XPathExpressionImpl extends XPathImplUtil implements XPathExpression {

    private com.sun.org.apache.xpath.internal.XPath xpath;

            XPathVariableResolver variableResolver) {

            boolean useServiceMechanism, FeatureManager featureManager) {

        this.useServiceMechanism = useServiceMechanism;

    public void setXPath (com.sun.org.apache.xpath.internal.XPath xpath) {

        XObject resultObject = eval(item, xpath);

        return getResultAsType(resultObject, returnType);

    @Override

        isSupported(returnType);

            return eval(item, returnType);

        } catch (java.lang.NullPointerException npe) {

            throw new XPathExpressionException (npe);

        } catch (javax.xml.transform.TransformerException te) {

            if (nestedException instanceof javax.xml.xpath.XPathFunctionException) {

                // XPathExpressionException (as per spec)

                throw new XPathExpressionException(te);

    @Override

    public String evaluate(Object item)

        throws XPathExpressionException {

        return (String)this.evaluate(item, XPathConstants.STRING);

    }

    @Override

        isSupported (returnType);

            Document document = getDocument(source);

            return eval(document, returnType);

        } catch (TransformerException e) {

            throw new XPathExpressionException(e);

    @Override

        return (String)this.evaluate(source, XPathConstants.STRING);

    @Override

    public <T>T evaluateExpression(Object item, Class<T> type)

        throws XPathExpressionException {

        isSupportedClassType(type);

        try {

            XObject resultObject = eval(item, xpath);

            if (type.isAssignableFrom(XPathEvaluationResult.class)) {

                return getXPathResult(resultObject, type);

            } else {

                return XPathResultImpl.getValue(resultObject, type);

            }

        } catch (javax.xml.transform.TransformerException te) {

            throw new XPathExpressionException(te);

    @Override

    public XPathEvaluationResult<?> evaluateExpression(Object item)

        throws XPathExpressionException {

        return evaluateExpression(item, XPathEvaluationResult.class);

    }

    @Override

    public <T>T  evaluateExpression(InputSource source, Class<T> type)

            throws XPathExpressionException {

        Document document = getDocument(source);

        return evaluateExpression(document, type);

    }

    @Override

    public XPathEvaluationResult<?> evaluateExpression(InputSource source)

        throws XPathExpressionException {

        return evaluateExpression(source, XPathEvaluationResult.class);

    }