All Downloads are FREE. Search and download functionalities are using the official Maven repository.
Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
org.apache.cxf.jaxrs.ext.xml.XMLSource Maven / Gradle / Ivy
/**
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cxf.jaxrs.ext.xml;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Array;
import java.net.URI;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.ResourceBundle;
import java.util.logging.Logger;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
import javax.xml.namespace.NamespaceContext;
import javax.xml.transform.Source;
import javax.xml.transform.dom.DOMSource;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.apache.cxf.common.i18n.BundleUtils;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.helpers.CastUtils;
import org.apache.cxf.helpers.IOUtils;
import org.apache.cxf.jaxrs.provider.JAXBElementProvider;
/**
* Utiliity class for manipulating XML response using XPath and XSLT
*
*/
public class XMLSource {
private static final Logger LOG = LogUtils.getL7dLogger(XMLSource.class);
private static final ResourceBundle BUNDLE = BundleUtils.getBundle(XMLSource.class);
private static final String XML_NAMESPACE = "http://www.w3.org/XML/1998/namespace";
private InputStream stream;
private boolean buffering;
public XMLSource(InputStream is) {
stream = is;
}
public void setBuffering(boolean enable) {
buffering = enable;
if (!stream.markSupported()) {
try {
stream = IOUtils.loadIntoBAIS(stream);
} catch (IOException ex) {
LOG.warning(new org.apache.cxf.common.i18n.Message("NO_SOURCE_MARK", BUNDLE).toString());
}
}
}
public T getNode(String expression, Class cls) {
return getNode(expression, CastUtils.cast(Collections.emptyMap(), String.class, String.class), cls);
}
public T getNode(String expression, Map namespaces, Class cls) {
XPath xpath = XPathFactory.newInstance().newXPath();
xpath.setNamespaceContext(new NamespaceContextImpl(namespaces));
try {
Node node = (Node)xpath.evaluate(expression, getSource(), XPathConstants.NODE);
if (node == null) {
return null;
}
DOMSource ds = new DOMSource(node);
return readFromSource(ds, cls);
} catch (XPathExpressionException ex) {
throw new IllegalArgumentException("Illegal XPath expression '" + expression + "'", ex);
}
}
public T[] getNodes(String expression, Class cls) {
return getNodes(expression, CastUtils.cast(Collections.emptyMap(), String.class, String.class), cls);
}
@SuppressWarnings("unchecked")
public T[] getNodes(String expression, Map namespaces, Class cls) {
XPath xpath = XPathFactory.newInstance().newXPath();
xpath.setNamespaceContext(new NamespaceContextImpl(namespaces));
try {
NodeList nodes = (NodeList)xpath.evaluate(expression, getSource(), XPathConstants.NODESET);
if (nodes == null || nodes.getLength() == 0) {
return null;
}
T[] values = (T[])Array.newInstance(cls, nodes.getLength());
for (int i = 0; i < nodes.getLength(); i++) {
DOMSource ds = new DOMSource(nodes.item(i));
values[i] = readFromSource(ds, cls);
}
return values;
} catch (XPathExpressionException ex) {
throw new IllegalArgumentException("Illegal XPath expression '" + expression + "'", ex);
}
}
public URI getLink(String expression) {
return getLink(expression, CastUtils.cast(Collections.emptyMap(), String.class, String.class));
}
public URI getLink(String expression, Map namespaces) {
String value = getValue(expression, namespaces);
return value == null ? null : URI.create(value);
}
public URI getBaseURI() {
Map map = new LinkedHashMap();
map.put("xml", XML_NAMESPACE);
return getLink("/*/@xml:base", map);
}
public String getValue(String expression) {
return getValue(expression, CastUtils.cast(Collections.emptyMap(), String.class, String.class));
}
public String getValue(String expression, Map namespaces) {
XPath xpath = XPathFactory.newInstance().newXPath();
xpath.setNamespaceContext(new NamespaceContextImpl(namespaces));
try {
return (String)xpath.evaluate(expression, getSource(), XPathConstants.STRING);
} catch (XPathExpressionException ex) {
throw new IllegalArgumentException("Illegal XPath expression '" + expression + "'", ex);
}
}
private static class NamespaceContextImpl implements NamespaceContext {
private Map namespaces;
public NamespaceContextImpl(Map namespaces) {
this.namespaces = namespaces;
}
public String getNamespaceURI(String prefix) {
return namespaces.get(prefix);
}
public String getPrefix(String namespace) {
for (Map.Entry entry : namespaces.entrySet()) {
if (entry.getValue().equals(namespace)) {
return entry.getKey();
}
}
return null;
}
public Iterator getPrefixes(String namespace) {
String prefix = namespaces.get(namespace);
if (prefix == null) {
return null;
}
return Collections.singletonList(prefix).iterator();
}
}
private T readFromSource(Source s, Class cls) {
try {
JAXBElementProvider provider = new JAXBElementProvider();
JAXBContext c = provider.getPackageContext(cls);
if (c == null) {
c = provider.getClassContext(cls);
}
Unmarshaller u = c.createUnmarshaller();
return cls.cast(u.unmarshal(s));
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
private InputSource getSource() {
try {
if (buffering) {
stream.reset();
stream.mark(stream.available());
}
} catch (IOException ex) {
LOG.warning(new org.apache.cxf.common.i18n.Message("NO_SOURCE_MARK", BUNDLE).toString());
}
return new InputSource(stream);
}
}
