/**
* 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.stax;
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.Node;
import org.apache.cxf.common.i18n.Message;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.xmlschema.SchemaCollection;
import org.apache.cxf.common.xmlschema.XmlSchemaConstants;
import org.apache.cxf.databinding.AbstractDataBinding;
import org.apache.cxf.databinding.DataReader;
import org.apache.cxf.databinding.DataWriter;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.message.Attachment;
import org.apache.cxf.service.Service;
import org.apache.cxf.service.ServiceModelVisitor;
import org.apache.cxf.service.model.MessagePartInfo;
import org.apache.cxf.service.model.ServiceInfo;
import org.apache.cxf.staxutils.StaxUtils;
/**
* A simple databinding implementation which reads and writes Source objects.
* This will not work with the standard databinding interceptors.
*/
public class StaxDataBinding extends AbstractDataBinding {
private XMLStreamDataReader xsrReader;
private XMLStreamDataWriter xswWriter;
public StaxDataBinding() {
super();
this.xsrReader = new XMLStreamDataReader();
this.xswWriter = new XMLStreamDataWriter();
}
public void initialize(Service service) {
for (ServiceInfo serviceInfo : service.getServiceInfos()) {
SchemaCollection schemaCollection = serviceInfo.getXmlSchemaCollection();
if (schemaCollection.getXmlSchemas().length > 1) {
// Schemas are already populated.
continue;
}
new ServiceModelVisitor(serviceInfo) {
public void begin(MessagePartInfo part) {
if (part.getTypeQName() != null || part.getElementQName() != null) {
return;
}
part.setTypeQName(XmlSchemaConstants.ANY_TYPE_QNAME);
}
} .walk();
}
}
@SuppressWarnings("unchecked")
public <T> DataReader<T> createReader(Class<T> cls) {
if (cls == XMLStreamReader.class) {
return (DataReader<T>) xsrReader;
} else {
throw new UnsupportedOperationException("The type " + cls.getName() + " is not supported.");
}
}
public Class<?>[] getSupportedReaderFormats() {
return new Class[] {XMLStreamReader.class};
}
@SuppressWarnings("unchecked")
public <T> DataWriter<T> createWriter(Class<T> cls) {
if (cls == XMLStreamWriter.class) {
return (DataWriter<T>) xswWriter;
} else {
throw new UnsupportedOperationException("The type " + cls.getName() + " is not supported.");
}
}
public Class<?>[] getSupportedWriterFormats() {
return new Class[] {XMLStreamWriter.class, Node.class};
}
public static class XMLStreamDataReader implements DataReader<XMLStreamReader> {
public Object read(MessagePartInfo part, XMLStreamReader input) {
return read(null, input, part.getTypeClass());
}
public Object read(QName name, XMLStreamReader input, Class type) {
return input;
}
public Object read(XMLStreamReader reader) {
return reader;
}
public void setSchema(Schema s) {
}
public void setAttachments(Collection<Attachment> attachments) {
}
public void setProperty(String prop, Object value) {
}
}
public static class XMLStreamDataWriter implements DataWriter<XMLStreamWriter> {
private static final Logger LOG = LogUtils.getL7dLogger(XMLStreamDataWriter.class);
public void write(Object obj, MessagePartInfo part, XMLStreamWriter output) {
write(obj, output);
}
public void write(Object obj, XMLStreamWriter writer) {
try {
if (obj instanceof XMLStreamReader) {
XMLStreamReader xmlStreamReader = (XMLStreamReader) obj;
StaxUtils.copy(xmlStreamReader, writer);
xmlStreamReader.close();
} else if (obj instanceof XMLStreamWriterCallback) {
((XMLStreamWriterCallback) obj).write(writer);
} else {
throw new UnsupportedOperationException("Data types of "
+ obj.getClass() + " are not supported.");
}
} catch (XMLStreamException e) {
throw new Fault(new Message("COULD_NOT_READ_XML_STREAM", LOG), e);
}
}
public void setSchema(Schema s) {
}
public void setAttachments(Collection<Attachment> attachments) {
}
public void setProperty(String key, Object value) {
}
}
}