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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.interceptor;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.stream.events.XMLEvent;
import javax.xml.validation.Schema;
import org.apache.cxf.annotations.SchemaValidation.SchemaValidationType;
import org.apache.cxf.databinding.DataWriter;
import org.apache.cxf.helpers.ServiceUtils;
import org.apache.cxf.message.Attachment;
import org.apache.cxf.message.Exchange;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageContentsList;
import org.apache.cxf.message.MessageUtils;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.service.Service;
import org.apache.cxf.service.model.BindingInfo;
import org.apache.cxf.service.model.BindingOperationInfo;
import org.apache.cxf.service.model.MessagePartInfo;
import org.apache.cxf.staxutils.CachingXmlEventWriter;
import org.apache.cxf.staxutils.StaxUtils;
import org.apache.cxf.wsdl.EndpointReferenceUtils;
public abstract class AbstractOutDatabindingInterceptor extends AbstractPhaseInterceptor {
public static final String DISABLE_OUTPUTSTREAM_OPTIMIZATION = "disable.outputstream.optimization";
public static final String OUT_BUFFERING = "org.apache.cxf.output.buffering";
public AbstractOutDatabindingInterceptor(String phase) {
super(phase);
}
public AbstractOutDatabindingInterceptor(String id, String phase) {
super(id, phase);
}
protected boolean isRequestor(Message message) {
return Boolean.TRUE.equals(message.containsKey(Message.REQUESTOR_ROLE));
}
protected void writeParts(Message message, Exchange exchange,
BindingOperationInfo operation, MessageContentsList objs,
List parts) {
OutputStream out = message.getContent(OutputStream.class);
XMLStreamWriter origXmlWriter = message.getContent(XMLStreamWriter.class);
Service service = exchange.getService();
XMLStreamWriter xmlWriter = origXmlWriter;
CachingXmlEventWriter cache = null;
Object en = message.getContextualProperty(OUT_BUFFERING);
boolean allowBuffer = true;
boolean buffer = false;
if (en != null) {
buffer = Boolean.TRUE.equals(en) || "true".equals(en);
allowBuffer = !(Boolean.FALSE.equals(en) || "false".equals(en));
}
// need to cache the events in case validation fails or buffering is enabled
if (buffer || (allowBuffer && shouldValidate(message) && !isRequestor(message))) {
cache = new CachingXmlEventWriter();
try {
cache.setNamespaceContext(origXmlWriter.getNamespaceContext());
} catch (XMLStreamException e) {
//ignorable, will just get extra namespace decls
}
xmlWriter = cache;
out = null;
}
if (out != null
&& writeToOutputStream(message, operation.getBinding(), service)
&& !MessageUtils.isTrue(message.getContextualProperty(DISABLE_OUTPUTSTREAM_OPTIMIZATION))) {
if (xmlWriter != null) {
try {
xmlWriter.writeCharacters("");
xmlWriter.flush();
} catch (XMLStreamException e) {
throw new Fault(e);
}
}
DataWriter osWriter = getDataWriter(message, service, OutputStream.class);
for (MessagePartInfo part : parts) {
if (objs.hasValue(part)) {
Object o = objs.get(part);
osWriter.write(o, part, out);
}
}
} else {
DataWriter dataWriter = getDataWriter(message, service, XMLStreamWriter.class);
for (MessagePartInfo part : parts) {
if (objs.hasValue(part)) {
Object o = objs.get(part);
dataWriter.write(o, part, xmlWriter);
}
}
}
if (cache != null) {
try {
for (XMLEvent event : cache.getEvents()) {
StaxUtils.writeEvent(event, origXmlWriter);
}
} catch (XMLStreamException e) {
throw new Fault(e);
}
}
}
protected boolean shouldValidate(Message m) {
return ServiceUtils.isSchemaValidationEnabled(SchemaValidationType.OUT, m);
}
protected boolean writeToOutputStream(Message m, BindingInfo info, Service s) {
/**
* Yes, all this code is EXTREMELY ugly. But it gives about a 60-70% performance
* boost with the JAXB RI, so its worth it.
*/
if (s == null) {
return false;
}
String enc = (String)m.get(Message.ENCODING);
return info.getClass().getName().equals("org.apache.cxf.binding.soap.model.SoapBindingInfo")
&& s.getDataBinding().getClass().getName().equals("org.apache.cxf.jaxb.JAXBDataBinding")
&& !MessageUtils.isDOMPresent(m)
&& (enc == null || "UTF-8".equals(enc));
}
protected DataWriter getDataWriter(Message message, Service service, Class output) {
DataWriter writer = service.getDataBinding().createWriter(output);
Collection atts = message.getAttachments();
if (MessageUtils.isTrue(message.getContextualProperty(
org.apache.cxf.message.Message.MTOM_ENABLED))
&& atts == null) {
atts = new ArrayList();
message.setAttachments(atts);
}
writer.setAttachments(atts);
writer.setProperty(DataWriter.ENDPOINT, message.getExchange().getEndpoint());
writer.setProperty(Message.class.getName(), message);
setSchemaOutMessage(service, message, writer);
return writer;
}
private void setSchemaOutMessage(Service service, Message message, DataWriter writer) {
if (shouldValidate(message)) {
Schema schema = EndpointReferenceUtils.getSchema(service.getServiceInfos().get(0),
message.getExchange().getBus());
writer.setSchema(schema);
}
}
protected XMLStreamWriter getXMLStreamWriter(Message message) {
return message.getContent(XMLStreamWriter.class);
}
}
