org.xmlunit.xpath.JAXPXPathEngine Maven / Gradle / Ivy
/*
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(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
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distributed under the License is distributed on an "AS IS" BASIS,
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See the License for the specific language governing permissions and
limitations under the License.
*/
package org.xmlunit.xpath;
import java.util.Map;
import javax.xml.transform.Source;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.xmlunit.ConfigurationException;
import org.xmlunit.XMLUnitException;
import org.xmlunit.util.Convert;
import org.xmlunit.util.IterableNodeList;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Simplified access to JAXP's XPath API.
*/
public class JAXPXPathEngine implements XPathEngine {
private final XPath xpath;
public JAXPXPathEngine(XPathFactory fac) {
try {
xpath = fac.newXPath();
} catch (Exception e) {
throw new ConfigurationException(e);
}
}
/**
* Create an XPathEngine that uses JAXP's default XPathFactory
* under the covers.
*/
public JAXPXPathEngine() {
this(XPathFactory.newInstance());
}
/**
* {@inheritDoc}
*/
public Iterable selectNodes(String xPath, Source s) {
try {
return new IterableNodeList(
(NodeList) xpath.evaluate(xPath, Convert.toInputSource(s),
XPathConstants.NODESET)
);
} catch (XPathExpressionException ex) {
throw new XMLUnitException(ex);
}
}
/**
* {@inheritDoc}
*/
public String evaluate(String xPath, Source s) {
try {
return xpath.evaluate(xPath, Convert.toInputSource(s));
} catch (XPathExpressionException ex) {
throw new XMLUnitException(ex);
}
}
/**
* {@inheritDoc}
*/
public Iterable selectNodes(String xPath, Node n) {
try {
return new IterableNodeList(
(NodeList) xpath.evaluate(xPath, n, XPathConstants.NODESET));
} catch (XPathExpressionException ex) {
throw new XMLUnitException(ex);
}
}
/**
* {@inheritDoc}
*/
public String evaluate(String xPath, Node n) {
try {
return xpath.evaluate(xPath, n);
} catch (XPathExpressionException ex) {
throw new XMLUnitException(ex);
}
}
/**
* {@inheritDoc}
*/
public void setNamespaceContext(Map prefix2Uri) {
xpath.setNamespaceContext(Convert.toNamespaceContext(prefix2Uri));
}
}