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/**
* 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.databinding;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import javax.annotation.Resource;
import javax.xml.XMLConstants;
import javax.xml.namespace.QName;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.stream.XMLStreamException;
import javax.xml.transform.dom.DOMSource;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.apache.cxf.Bus;
import org.apache.cxf.BusFactory;
import org.apache.cxf.common.util.StringUtils;
import org.apache.cxf.common.xmlschema.SchemaCollection;
import org.apache.cxf.helpers.DOMUtils;
import org.apache.cxf.service.model.SchemaInfo;
import org.apache.cxf.service.model.ServiceInfo;
import org.apache.cxf.staxutils.StaxUtils;
import org.apache.ws.commons.schema.XmlSchema;
/**
* Supply default implementations, as appropriate, for DataBinding.
*/
public abstract class AbstractDataBinding implements DataBinding {
private static final Map BUILTIN_SCHEMA_LOCS = new HashMap();
{
BUILTIN_SCHEMA_LOCS.put("http://www.w3.org/2005/08/addressing",
"http://www.w3.org/2006/03/addressing/ws-addr.xsd");
BUILTIN_SCHEMA_LOCS.put("http://ws-i.org/profiles/basic/1.1/xsd",
"http://ws-i.org/profiles/basic/1.1/swaref.xsd");
}
protected boolean mtomEnabled;
protected int mtomThreshold;
private Bus bus;
private Collection schemas;
private Map namespaceMap;
private boolean hackAroundEmptyNamespaceIssue;
protected Bus getBus() {
if (bus == null) {
return BusFactory.getDefaultBus();
}
return bus;
}
/**
* This call is used to set the bus. It should only be called once.
*
* @param bus
*/
@Resource(name = "cxf")
public void setBus(Bus bus) {
assert this.bus == null || this.bus == bus;
this.bus = bus;
}
public Collection getSchemas() {
return schemas;
}
public void setSchemas(Collection schemas) {
this.schemas = schemas;
}
public XmlSchema addSchemaDocument(ServiceInfo serviceInfo, SchemaCollection col, Document d,
String systemId) {
return addSchemaDocument(serviceInfo, col, d, systemId, null);
}
public XmlSchema addSchemaDocument(ServiceInfo serviceInfo,
SchemaCollection col,
Document d,
String systemId,
Collection ids) {
/*
* Sanity check. The document has to remotely resemble a schema.
*/
if (!XMLConstants.W3C_XML_SCHEMA_NS_URI.equals(d.getDocumentElement().getNamespaceURI())) {
QName qn = DOMUtils.getElementQName(d.getDocumentElement());
throw new RuntimeException("Invalid schema document passed to "
+ "AbstractDataBinding.addSchemaDocument, "
+ "not in W3C schema namespace: " + qn);
}
if (!"schema".equals(d.getDocumentElement().getLocalName())) {
QName qn = DOMUtils.getElementQName(d.getDocumentElement());
throw new RuntimeException("Invalid schema document passed to "
+ "AbstractDataBinding.addSchemaDocument, "
+ "document element isn't 'schema': " + qn);
}
String ns = d.getDocumentElement().getAttribute("targetNamespace");
boolean copied = false;
if (StringUtils.isEmpty(ns)) {
if (DOMUtils.getFirstElement(d.getDocumentElement()) == null) {
hackAroundEmptyNamespaceIssue = true;
return null;
}
// create a copy of the dom so we
// can modify it.
d = copy(d);
copied = true;
ns = serviceInfo.getInterface().getName().getNamespaceURI();
d.getDocumentElement().setAttribute("targetNamespace", ns);
}
SchemaInfo schemaInfo = serviceInfo.getSchema(ns);
if (schemaInfo != null
&& (systemId == null && schemaInfo.getSystemId() == null || systemId != null
&& systemId
.equalsIgnoreCase(schemaInfo
.getSystemId()))) {
return schemaInfo.getSchema();
}
if (hackAroundEmptyNamespaceIssue) {
d = doEmptyNamespaceHack(d, copied);
}
Node n = d.getDocumentElement().getFirstChild();
boolean patchRequired = false;
while (n != null) {
if (n instanceof Element) {
Element e = (Element)n;
if (e.getLocalName().equals("import")) {
patchRequired = true;
break;
}
}
n = n.getNextSibling();
}
if (patchRequired) {
if (!copied) {
d = copy(d);
}
n = d.getDocumentElement().getFirstChild();
while (n != null) {
if (n instanceof Element) {
Element e = (Element)n;
if (e.getLocalName().equals("import")) {
e = (Element)n;
String loc = e.getAttribute("schemaLocation");
if (ids == null || ids.contains(loc)) {
e.removeAttribute("schemaLocation");
}
updateSchemaLocation(e);
if (StringUtils.isEmpty(e.getAttribute("namespace"))) {
e.setAttribute("namespace", serviceInfo.getInterface().getName()
.getNamespaceURI());
}
}
}
n = n.getNextSibling();
}
}
SchemaInfo schema = new SchemaInfo(ns);
schema.setSystemId(systemId);
XmlSchema xmlSchema;
synchronized (d) {
xmlSchema = col.read(d, systemId);
schema.setSchema(xmlSchema);
schema.setElement(d.getDocumentElement());
}
serviceInfo.addSchema(schema);
return xmlSchema;
}
private Document doEmptyNamespaceHack(Document d, boolean alreadyWritable) {
boolean hasStuffToRemove = false;
Element el = DOMUtils.getFirstElement(d.getDocumentElement());
while (el != null) {
if ("import".equals(el.getLocalName())
&& StringUtils.isEmpty(el.getAttribute("targetNamespace"))) {
hasStuffToRemove = true;
break;
}
el = DOMUtils.getNextElement(el);
}
if (hasStuffToRemove) {
// create a copy of the dom so we
// can modify it.
if (!alreadyWritable) {
d = copy(d);
}
el = DOMUtils.getFirstElement(d.getDocumentElement());
while (el != null) {
if ("import".equals(el.getLocalName())
&& StringUtils.isEmpty(el.getAttribute("targetNamespace"))) {
d.getDocumentElement().removeChild(el);
el = DOMUtils.getFirstElement(d.getDocumentElement());
} else {
el = DOMUtils.getNextElement(el);
}
}
}
return d;
}
private Document copy(Document doc) {
try {
return StaxUtils.copy(doc);
} catch (XMLStreamException e) {
// ignore
} catch (ParserConfigurationException e) {
// ignore
}
return doc;
}
protected void updateSchemaLocation(Element e) {
String ns = e.getAttribute("namespace");
String newLoc = BUILTIN_SCHEMA_LOCS.get(ns);
if (newLoc != null) {
e.setAttribute("schemaLocation", newLoc);
}
}
/**
* @return the namespaceMap (URI to prefix). This will be null
* if no particular namespace map has been set.
*/
public Map getNamespaceMap() {
return namespaceMap;
}
/**
* Set a map of from URI to prefix. If possible, the data binding will use these
* prefixes on the wire.
*
* @param namespaceMap The namespaceMap to set.
*/
public void setNamespaceMap(Map namespaceMap) {
checkNamespaceMap(namespaceMap);
this.namespaceMap = namespaceMap;
}
/**
* Provide explicit mappings to ReflectionServiceFactory. {@inheritDoc}
*/
public Map getDeclaredNamespaceMappings() {
return this.namespaceMap;
}
protected static void checkNamespaceMap(Map namespaceMap) {
// make some checks. This is a map from namespace to prefix, but we want unique prefixes.
if (namespaceMap != null) {
Set prefixesSoFar = new HashSet();
for (Map.Entry mapping : namespaceMap.entrySet()) {
if (prefixesSoFar.contains(mapping.getValue())) {
throw new IllegalArgumentException("Duplicate prefix " + mapping.getValue());
}
prefixesSoFar.add(mapping.getValue());
}
}
}
public void setMtomEnabled(boolean enabled) {
mtomEnabled = enabled;
}
public boolean isMtomEnabled() {
return mtomEnabled;
}
public int getMtomThreshold() {
return mtomThreshold;
}
public void setMtomThreshold(int threshold) {
mtomThreshold = threshold;
}
}
