diff options
Diffstat (limited to 'sca-java-1.x/tags/0.99-incubating/modules/binding-sca-xml/src/main')
2 files changed, 240 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/0.99-incubating/modules/binding-sca-xml/src/main/java/org/apache/tuscany/sca/binding/sca/xml/SCABindingProcessor.java b/sca-java-1.x/tags/0.99-incubating/modules/binding-sca-xml/src/main/java/org/apache/tuscany/sca/binding/sca/xml/SCABindingProcessor.java new file mode 100644 index 0000000000..7f2e8dd6da --- /dev/null +++ b/sca-java-1.x/tags/0.99-incubating/modules/binding-sca-xml/src/main/java/org/apache/tuscany/sca/binding/sca/xml/SCABindingProcessor.java @@ -0,0 +1,221 @@ +/* + * 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.sca.xml; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; + +import java.util.List; +import java.util.StringTokenizer; + +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.AssemblyFactory; +import org.apache.tuscany.sca.assembly.SCABinding; +import org.apache.tuscany.sca.assembly.SCABindingFactory; +import org.apache.tuscany.sca.assembly.xml.Constants; +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.interfacedef.Operation; +import org.apache.tuscany.sca.policy.Intent; +import org.apache.tuscany.sca.policy.IntentAttachPoint; +import org.apache.tuscany.sca.policy.PolicyFactory; +import org.apache.tuscany.sca.policy.PolicySet; +import org.apache.tuscany.sca.policy.PolicySetAttachPoint; + +/** + * A processor to read the XML that describes the SCA binding. + */ + +public class SCABindingProcessor implements StAXArtifactProcessor<SCABinding>, Constants{ + + protected AssemblyFactory assemblyFactory; + protected PolicyFactory policyFactory; + private SCABindingFactory scaBindingFactory; + + protected static final String BINDING_SCA = "binding.sca"; + protected static final QName BINDING_SCA_QNAME = new QName(Constants.SCA10_NS, BINDING_SCA); + + public SCABindingProcessor(ModelFactoryExtensionPoint modelFactories) { + this.assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + this.policyFactory = modelFactories.getFactory(PolicyFactory.class); + this.scaBindingFactory = modelFactories.getFactory(SCABindingFactory.class); + } + + public SCABindingProcessor(AssemblyFactory assemblyFactory, + PolicyFactory policyFactory, + SCABindingFactory scaBindingFactory) { + this.assemblyFactory = assemblyFactory; + this.policyFactory = policyFactory; + this.scaBindingFactory = scaBindingFactory; + } + + public QName getArtifactType() { + return BINDING_SCA_QNAME; + } + + public Class<SCABinding> getModelType() { + return SCABinding.class; + } + + public SCABinding read(XMLStreamReader reader) throws ContributionReadException { + try { + SCABinding scaBinding = scaBindingFactory.createSCABinding(); + + // Read policies + if ( scaBinding instanceof IntentAttachPoint && scaBinding instanceof PolicySetAttachPoint ) { + readPolicies((PolicySetAttachPoint)scaBinding, reader); + } + + // Read binding name + String name = reader.getAttributeValue(null, NAME); + if (name != null) { + scaBinding.setName(name); + } + + // Read binding URI + String uri = reader.getAttributeValue(null, URI); + if (uri != null) { + scaBinding.setURI(uri); + } + + // Skip to end element + while (reader.hasNext()) { + if (reader.next() == END_ELEMENT && BINDING_SCA_QNAME.equals(reader.getName())) { + break; + } + } + return scaBinding; + + } catch (XMLStreamException e) { + throw new ContributionReadException(e); + } + } + + public void resolve(SCABinding model, ModelResolver resolver) throws ContributionResolveException { + } + + public void write(SCABinding scaBinding, XMLStreamWriter writer) throws ContributionWriteException { + try { + // Write a <binding.sca> + writer.writeStartElement(Constants.SCA10_NS, BINDING_SCA); + + // Write binding URI + if (scaBinding.getURI() != null) { + writer.writeAttribute(URI, scaBinding.getURI()); + } + + writer.writeEndElement(); + + } catch (XMLStreamException e) { + throw new ContributionWriteException(e); + } + } + + /** + * The following are copied from BaseArtefactProcessor as that class is + * abstract + */ + + /** + * Reads policy intents and policy sets. + * @param attachPoint + * @param reader + */ + protected void readPolicies(PolicySetAttachPoint attachPoint, XMLStreamReader reader) { + readPolicies(attachPoint, null, reader); + } + + /** + * Reads policy intents and policy sets associated with an operation. + * @param attachPoint + * @param operation + * @param reader + */ + protected void readPolicies(PolicySetAttachPoint attachPoint, Operation operation, XMLStreamReader reader) { + readIntents(attachPoint, operation, reader); + + String value = reader.getAttributeValue(null, Constants.POLICY_SETS); + if (value != null) { + List<PolicySet> policySets = attachPoint.getPolicySets(); + for (StringTokenizer tokens = new StringTokenizer(value); tokens.hasMoreTokens();) { + QName qname = getQNameValue(reader, tokens.nextToken()); + PolicySet policySet = policyFactory.createPolicySet(); + policySet.setName(qname); + if (operation != null) { + //policySet.getOperations().add(operation); + } + policySets.add(policySet); + } + } + } + + /** + * Read policy intents associated with an operation. + * @param attachPoint + * @param operation + * @param reader + */ + protected void readIntents(IntentAttachPoint attachPoint, Operation operation, XMLStreamReader reader) { + String value = reader.getAttributeValue(null, Constants.REQUIRES); + if (value != null) { + List<Intent> requiredIntents = attachPoint.getRequiredIntents(); + for (StringTokenizer tokens = new StringTokenizer(value); tokens.hasMoreTokens();) { + QName qname = getQNameValue(reader, tokens.nextToken()); + Intent intent = policyFactory.createIntent(); + intent.setName(qname); + if (operation != null) { + //intent.getOperations().add(operation); + } + requiredIntents.add(intent); + } + } + } + + /** + * Returns a qname from a string. + * @param reader + * @param value + * @return + */ + protected QName getQNameValue(XMLStreamReader reader, String value) { + if (value != null) { + int index = value.indexOf(':'); + String prefix = index == -1 ? "" : value.substring(0, index); + String localName = index == -1 ? value : value.substring(index + 1); + String ns = reader.getNamespaceContext().getNamespaceURI(prefix); + if (ns == null) { + ns = ""; + } + return new QName(ns, localName, prefix); + } else { + return null; + } + } + + + +} diff --git a/sca-java-1.x/tags/0.99-incubating/modules/binding-sca-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor b/sca-java-1.x/tags/0.99-incubating/modules/binding-sca-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor new file mode 100644 index 0000000000..bc9f9b7d62 --- /dev/null +++ b/sca-java-1.x/tags/0.99-incubating/modules/binding-sca-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor @@ -0,0 +1,19 @@ +# 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. + +# Implementation class for the artifact processor extension +org.apache.tuscany.sca.binding.sca.xml.SCABindingProcessor;qname=http://www.osoa.org/xmlns/sca/1.0#binding.sca,model=org.apache.tuscany.sca.binding.sca.impl.SCABindingImpl |