diff options
Diffstat (limited to 'sandbox/event/modules/binding-event/src/main/java/org/apache/tuscany/sca/binding/event/xml/EventBindingProcessor.java')
-rw-r--r-- | sandbox/event/modules/binding-event/src/main/java/org/apache/tuscany/sca/binding/event/xml/EventBindingProcessor.java | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/sandbox/event/modules/binding-event/src/main/java/org/apache/tuscany/sca/binding/event/xml/EventBindingProcessor.java b/sandbox/event/modules/binding-event/src/main/java/org/apache/tuscany/sca/binding/event/xml/EventBindingProcessor.java new file mode 100644 index 0000000000..000be21d26 --- /dev/null +++ b/sandbox/event/modules/binding-event/src/main/java/org/apache/tuscany/sca/binding/event/xml/EventBindingProcessor.java @@ -0,0 +1,134 @@ +/* + * 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.event.xml; + +import static javax.xml.stream.XMLStreamConstants.END_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.EventBinding; +import org.apache.tuscany.sca.assembly.EventBindingFactory; +import org.apache.tuscany.sca.assembly.xml.Constants; +import org.apache.tuscany.sca.assembly.xml.PolicyAttachPointProcessor; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.contribution.service.ContributionWriteException; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.policy.IntentAttachPointType; +import org.apache.tuscany.sca.policy.IntentAttachPointTypeFactory; +import org.apache.tuscany.sca.policy.PolicyFactory; +import org.apache.tuscany.sca.policy.PolicySetAttachPoint; + +/** + * A processor to read the XML that describes the event binding. + * + * @version $$ + */ + +public class EventBindingProcessor implements StAXArtifactProcessor<EventBinding>, Constants{ + + private PolicyFactory policyFactory; + private EventBindingFactory eventBindingFactory; + private PolicyAttachPointProcessor policyProcessor; + private IntentAttachPointTypeFactory intentAttachPointTypeFactory; + @SuppressWarnings("unused") + private Monitor monitor; + + protected static final String BINDING_EVENT = "binding.event"; + protected static final QName BINDING_EVENT_QNAME = new QName(Constants.SCA10_TUSCANY_NS, BINDING_EVENT); + + public EventBindingProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) { + this.policyFactory = modelFactories.getFactory(PolicyFactory.class); + this.eventBindingFactory = modelFactories.getFactory(EventBindingFactory.class); + policyProcessor = new PolicyAttachPointProcessor(policyFactory); + this.intentAttachPointTypeFactory = modelFactories.getFactory(IntentAttachPointTypeFactory.class); + this.monitor = monitor; + } + + public QName getArtifactType() { + return BINDING_EVENT_QNAME; + } + + public Class<EventBinding> getModelType() { + return EventBinding.class; + } + + public EventBinding read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { + EventBinding eventBinding = eventBindingFactory.createEventBinding(); + IntentAttachPointType bindingType = intentAttachPointTypeFactory.createBindingType(); + bindingType.setName(getArtifactType()); + bindingType.setUnresolved(true); + ((PolicySetAttachPoint)eventBinding).setType(bindingType); + + // Read policies + policyProcessor.readPolicies(eventBinding, reader); + + // Read binding name + String name = reader.getAttributeValue(null, NAME); + if (name != null) { + eventBinding.setName(name); + } + + // Read binding URI + String uri = reader.getAttributeValue(null, URI); + if (uri != null) { + eventBinding.setURI(uri); + } + + // Skip to end element + while (reader.hasNext()) { + if (reader.next() == END_ELEMENT && BINDING_EVENT_QNAME.equals(reader.getName())) { + break; + } + } + return eventBinding; + } + + public void resolve(EventBinding model, ModelResolver resolver) throws ContributionResolveException { + policyProcessor.resolvePolicies(model, resolver); + } + + public void write(EventBinding eventBinding, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException { + + // Write <binding.event> + policyProcessor.writePolicyPrefixes(eventBinding, writer); + writer.writeStartElement(Constants.SCA10_TUSCANY_NS, BINDING_EVENT); + policyProcessor.writePolicyAttributes(eventBinding, writer); + + // Write binding name + if (eventBinding.getName() != null) { + writer.writeAttribute(NAME, eventBinding.getName()); + } + + // Write binding URI + if (eventBinding.getURI() != null) { + writer.writeAttribute(URI, eventBinding.getURI()); + } + + writer.writeEndElement(); + } + +} |