diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/binding-http/src/main/java/org/apache/tuscany/sca/binding/http/xml/HTTPBindingProcessor.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/binding-http/src/main/java/org/apache/tuscany/sca/binding/http/xml/HTTPBindingProcessor.java | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-http/src/main/java/org/apache/tuscany/sca/binding/http/xml/HTTPBindingProcessor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-http/src/main/java/org/apache/tuscany/sca/binding/http/xml/HTTPBindingProcessor.java new file mode 100644 index 0000000000..fc57ada6f2 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-http/src/main/java/org/apache/tuscany/sca/binding/http/xml/HTTPBindingProcessor.java @@ -0,0 +1,201 @@ +/* + * 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.tuscany.sca.binding.http.xml; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; +import static javax.xml.stream.XMLStreamConstants.START_ELEMENT; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.Base; +import org.apache.tuscany.sca.assembly.OperationSelector; +import org.apache.tuscany.sca.assembly.WireFormat; +import org.apache.tuscany.sca.binding.http.HTTPBinding; +import org.apache.tuscany.sca.binding.http.HTTPBindingFactory; +import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.ContributionReadException; +import org.apache.tuscany.sca.contribution.processor.ContributionResolveException; +import org.apache.tuscany.sca.contribution.processor.ContributionWriteException; +import org.apache.tuscany.sca.contribution.processor.ProcessorContext; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.StAXAttributeProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; + + +/** + * HTTP binding artifact processor that handles the read/write of HTTP specific XML elements. + * + * @version $Rev$ $Date$ +*/ +public class HTTPBindingProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<HTTPBinding> { + private static final QName RESPONSE_QNAME = new QName(Base.SCA11_TUSCANY_NS, "response"); + + private static final String NAME = "name"; + private static final String URI = "uri"; + + private HTTPBindingFactory httpBindingFactory; + private StAXArtifactProcessor<Object> extensionProcessor; + + public HTTPBindingProcessor(ExtensionPointRegistry extensionPoints, + StAXArtifactProcessor<Object> extensionProcessor, + StAXAttributeProcessor<Object> extensionAttributeProcessor) { + FactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class); + this.httpBindingFactory = modelFactories.getFactory(HTTPBindingFactory.class); + this.extensionProcessor = (StAXArtifactProcessor<Object>)extensionProcessor; + } + + public QName getArtifactType() { + return HTTPBinding.TYPE; + } + + public Class<HTTPBinding> getModelType() { + return HTTPBinding.class; + } + + public HTTPBinding read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException,XMLStreamException { + HTTPBinding httpBinding = httpBindingFactory.createHTTPBinding(); + + /** + * <tuscany:binding.http uri="http://localhost:8085/Customer"> + * <tuscany:wireFormat.json /> + * <tuscany:operationSelector.default /> + * <tuscany:response> + * <tuscany:wireFormat.xml /> + * </tuscany:response> + * </tuscany:binding.http> + * + */ + + while (reader.hasNext()) { + QName elementName = null; + int event = reader.getEventType(); + switch (event) { + case START_ELEMENT: + elementName = reader.getName(); + + if (HTTPBinding.TYPE.equals(elementName)) { + String name = getString(reader, NAME); + if (name != null) { + httpBinding.setName(name); + } + + String uri = getURIString(reader, URI); + if (uri != null) { + httpBinding.setURI(uri); + } + } else if (RESPONSE_QNAME.equals(elementName)) { + + // skip response + reader.next(); + // and position to the next start_element event + while (reader.hasNext()) { + int sub_event = reader.getEventType(); + switch (sub_event) { + case START_ELEMENT: + elementName = reader.getName(); + break; + default: + reader.next(); + } + break; + } + + // dispatch to read wire format for the response + Object extension = extensionProcessor.read(reader, context); + if (extension != null) { + if (extension instanceof WireFormat) { + httpBinding.setResponseWireFormat((WireFormat)extension); + } + } + break; + } else { + // Read an extension element + Object extension = extensionProcessor.read(reader, context); + if (extension != null) { + if (extension instanceof WireFormat) { + httpBinding.setRequestWireFormat((WireFormat)extension); + } else if (extension instanceof OperationSelector) { + httpBinding.setOperationSelector((OperationSelector)extension); + } + } + } + } + + if (event == END_ELEMENT && HTTPBinding.TYPE.equals(reader.getName())) { + break; + } + + // Read the next element + if (reader.hasNext()) { + reader.next(); + } + } + + return httpBinding; + } + + public void write(HTTPBinding httpBinding, XMLStreamWriter writer, ProcessorContext context) + throws ContributionWriteException, XMLStreamException { + // writer.writeStartElement(Constants.SCA10_NS, BINDING_HTTP); + + writeStart(writer, HTTPBinding.TYPE.getNamespaceURI(), HTTPBinding.TYPE.getLocalPart()); + + // Write binding name + if (httpBinding.getName() != null) { + writer.writeAttribute(NAME, httpBinding.getName()); + } + + // Write binding URI + if (httpBinding.getURI() != null) { + writer.writeAttribute(URI, httpBinding.getURI()); + } + + // Write operation selectors + if (httpBinding.getOperationSelector() != null) { + extensionProcessor.write(httpBinding.getOperationSelector(), writer, context); + } + + // Write wire formats + if (httpBinding.getRequestWireFormat() != null) { + extensionProcessor.write(httpBinding.getRequestWireFormat(), writer, context); + } + + if (httpBinding.getResponseWireFormat() != null && httpBinding.getRequestWireFormat() != httpBinding + .getResponseWireFormat()) { + writeStart(writer, RESPONSE_QNAME.getNamespaceURI(), RESPONSE_QNAME.getLocalPart()); + extensionProcessor.write(httpBinding.getResponseWireFormat(), writer, context); + writeEnd(writer); + } + + writeEnd(writer); + // writer.writeEndElement(); + } + + public void resolve(HTTPBinding model, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { + // Should not need to do anything here for now... + + } + +} |