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Apache CXF Runtime XmlBeans DataBinding
/**
* 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.xmlbeans;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Collection;
import java.util.logging.Logger;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.validation.Schema;
import org.w3c.dom.Comment;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.util.StringUtils;
import org.apache.cxf.databinding.DataWriter;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.message.Attachment;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageUtils;
import org.apache.cxf.service.model.MessagePartInfo;
import org.apache.cxf.staxutils.StaxUtils;
import org.apache.ws.commons.schema.XmlSchemaElement;
import org.apache.xmlbeans.SchemaType;
import org.apache.xmlbeans.XmlAnySimpleType;
import org.apache.xmlbeans.XmlObject;
import org.apache.xmlbeans.XmlOptions;
import org.apache.xmlbeans.XmlTokenSource;
import org.apache.xmlbeans.impl.values.XmlObjectBase;
public class DataWriterImpl implements DataWriter {
private static final Logger LOG = LogUtils.getLogger(XmlBeansDataBinding.class);
private Schema schema;
private Message message;
public DataWriterImpl() {
}
public void write(Object obj, XMLStreamWriter output) {
write(obj, null, output);
}
public void write(Object obj, MessagePartInfo part, XMLStreamWriter output) {
try {
Class typeClass = part != null ? part.getTypeClass() : null;
if (typeClass == null) {
typeClass = obj.getClass();
}
if (!XmlObject.class.isAssignableFrom(typeClass) && part != null) {
typeClass = (Class)part.getProperty(XmlAnySimpleType.class.getName());
Class cls[] = typeClass.getDeclaredClasses();
for (Class c : cls) {
if ("Factory".equals(c.getSimpleName())) {
try {
SchemaType st = (SchemaType)part.getProperty(SchemaType.class.getName());
XmlOptions options = new XmlOptions();
if (schema != null) {
options.setValidateOnSet();
}
if (!st.isDocumentType()) {
options.setLoadReplaceDocumentElement(null);
}
Method meth = c.getMethod("newValue", Object.class);
obj = meth.invoke(null, obj);
break;
} catch (Exception e) {
throw new Fault("UNMARSHAL_ERROR", LOG, e, part.getTypeClass());
}
}
}
}
if (obj != null) {
XmlOptions options = new XmlOptions();
if (schema != null) {
options.setValidateOnSet();
}
if (message != null
&& MessageUtils.getContextualBoolean(message,
XmlBeansDataBinding.XMLBEANS_NAMESPACE_HACK,
false)) {
Object dom;
if (obj instanceof XmlObjectBase) {
XmlObjectBase source = (XmlObjectBase)obj;
dom = source.newDomNode(options);
} else {
XmlTokenSource source = (XmlTokenSource)obj;
dom = source.newDomNode(options);
}
if (dom instanceof Document) {
org.w3c.dom.Element e = ((Document)dom).getDocumentElement();
StaxUtils.copy(e, output);
} else if (dom instanceof DocumentFragment) {
DocumentFragment frag = (DocumentFragment) dom;
Node node = frag.getFirstChild();
while (node != null) {
if (node instanceof Element) {
StaxUtils.copy((Element)node, output);
} else if (node instanceof Comment) {
output.writeComment(((Comment)node).getData());
} else if (node instanceof Text) {
output.writeCharacters(((Text)node).getData());
}
node = node.getNextSibling();
}
} else {
throw new Fault("Invalid document type returned: " + dom.toString(), LOG);
}
return;
}
XMLStreamReader reader;
if (obj instanceof XmlObjectBase) {
XmlObjectBase source = (XmlObjectBase)obj;
reader = source.newCursorForce().newXMLStreamReader(options);
} else {
XmlTokenSource source = (XmlTokenSource)obj;
reader = source.newCursor().newXMLStreamReader(options);
}
SchemaType st = part == null ? null
: (SchemaType)part.getProperty(SchemaType.class.getName());
if (st == null) {
try {
Field f = typeClass.getField("type");
if (Modifier.isStatic(f.getModifiers())) {
st = (SchemaType)f.get(null);
if (part != null) {
part.setProperty(SchemaType.class.getName(), st);
}
}
} catch (Exception es) {
//ignore
es.printStackTrace();
}
}
if (reader.getEventType() == XMLStreamReader.START_DOCUMENT) {
reader.next();
}
if (st != null && !st.isDocumentType()
|| reader.getEventType() == XMLStreamReader.CHARACTERS) {
QName elementName = part != null ? part.getConcreteName() : st.getName();
if (StringUtils.isEmpty(elementName.getNamespaceURI())) {
output.writeStartElement(elementName.getLocalPart());
} else {
String pfx = output.getPrefix(elementName.getNamespaceURI());
if (StringUtils.isEmpty(pfx)) {
output.writeStartElement("tns",
elementName.getLocalPart(),
elementName.getNamespaceURI());
output.writeNamespace("tns", elementName.getNamespaceURI());
} else {
output.writeStartElement(pfx,
elementName.getLocalPart(),
elementName.getNamespaceURI());
}
}
StaxUtils.copy(reader, output, false);
output.writeEndElement();
} else {
StaxUtils.copy(reader, output, false);
}
} else if (needToRender(part)) {
output.writeStartElement(part.getConcreteName().getNamespaceURI(),
part.getConcreteName().getLocalPart());
output.writeEndElement();
}
} catch (XMLStreamException e) {
throw new Fault("MARSHAL_ERROR", LOG, e, obj);
}
}
private boolean needToRender(MessagePartInfo part) {
if (part != null && part.getXmlSchema() instanceof XmlSchemaElement) {
XmlSchemaElement element = (XmlSchemaElement)part.getXmlSchema();
return element.isNillable() && element.getMinOccurs() > 0;
}
return false;
}
public void setAttachments(Collection attachments) {
}
public void setProperty(String key, Object value) {
if (Message.class.getName().equals(key)) {
message = (Message)value;
}
}
public void setSchema(Schema schema) {
this.schema = schema;
}
}