diff options
Diffstat (limited to 'tags/java/sca/2.0-M1/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyIntentProcessor.java')
| -rw-r--r-- | tags/java/sca/2.0-M1/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyIntentProcessor.java | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/tags/java/sca/2.0-M1/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyIntentProcessor.java b/tags/java/sca/2.0-M1/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyIntentProcessor.java deleted file mode 100644 index 03cd635596..0000000000 --- a/tags/java/sca/2.0-M1/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyIntentProcessor.java +++ /dev/null @@ -1,420 +0,0 @@ -/* - * 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.policy.xml; - -import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; -import static javax.xml.stream.XMLStreamConstants.START_ELEMENT; - -import java.util.ArrayList; -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.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.StAXArtifactProcessor; -import org.apache.tuscany.sca.contribution.resolver.ModelResolver; -import org.apache.tuscany.sca.core.FactoryExtensionPoint; -import org.apache.tuscany.sca.monitor.Monitor; -import org.apache.tuscany.sca.monitor.Problem; -import org.apache.tuscany.sca.monitor.Problem.Severity; -import org.apache.tuscany.sca.policy.Intent; -import org.apache.tuscany.sca.policy.PolicyFactory; -import org.apache.tuscany.sca.policy.ProfileIntent; -import org.apache.tuscany.sca.policy.QualifiedIntent; - -/** - * Processor for handling XML models of PolicyIntent definitions - * - * @version $Rev$ $Date$ - */ -abstract class PolicyIntentProcessor<T extends Intent> extends BaseStAXArtifactProcessor implements - StAXArtifactProcessor<T>, PolicyConstants { - - private PolicyFactory policyFactory; - private Monitor monitor; - - public PolicyIntentProcessor(FactoryExtensionPoint modelFactories, Monitor monitor) { - this.policyFactory = modelFactories.getFactory(PolicyFactory.class); - this.monitor = monitor; - } - - public PolicyIntentProcessor(PolicyFactory policyFactory, Monitor monitor) { - this.policyFactory = policyFactory; - this.monitor = monitor; - } - - /** - * Report a error. - * - * @param problems - * @param message - * @param model - */ - private void error(String message, Object model, Object... messageParameters) { - if (monitor != null) { - Problem problem = - monitor.createProblem(this.getClass().getName(), - "policy-xml-validation-messages", - Severity.ERROR, - model, - message, - (Object[])messageParameters); - monitor.problem(problem); - } - } - - public T read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { - Intent policyIntent = null; - String policyIntentName = reader.getAttributeValue(null, NAME); - if (policyIntentName == null) { - error("IntentNameMissing", reader); - return (T)policyIntent; - } - - // Read an <sca:intent> - if (reader.getAttributeValue(null, REQUIRES) != null) { - policyIntent = policyFactory.createProfileIntent(); - } else if (policyIntentName != null && policyIntentName.indexOf(QUALIFIER) != -1) { - policyIntent = policyFactory.createQualifiedIntent(); - - int qualifierIndex = policyIntentName.lastIndexOf(QUALIFIER); - Intent qualifiableIntent = policyFactory.createIntent(); - qualifiableIntent.setUnresolved(true); - qualifiableIntent.setName(new QName(policyIntentName.substring(0, qualifierIndex))); - - ((QualifiedIntent)policyIntent).setQualifiableIntent(qualifiableIntent); - } else { - policyIntent = policyFactory.createIntent(); - } - policyIntent.setName(new QName(policyIntentName)); - - if (policyIntent instanceof ProfileIntent) { - readRequiredIntents((ProfileIntent)policyIntent, reader); - } else { - readExcludedIntents(policyIntent, reader); - } - - readConstrainedArtifacts(policyIntent, reader); - - int event = reader.getEventType(); - QName name = null; - while (reader.hasNext()) { - event = reader.getEventType(); - switch (event) { - case START_ELEMENT: { - name = reader.getName(); - if (DESCRIPTION_QNAME.equals(name)) { - policyIntent.setDescription(reader.getElementText()); - } - break; - } - } - if (event == END_ELEMENT && POLICY_INTENT_QNAME.equals(reader.getName())) { - break; - } - - //Read the next element - if (reader.hasNext()) { - reader.next(); - } - } - return (T)policyIntent; - } - - public void write(T policyIntent, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException { - // Write an <sca:intent> - writer.writeStartElement(PolicyConstants.SCA10_NS, INTENT); - writer.writeNamespace(policyIntent.getName().getPrefix(), policyIntent.getName().getNamespaceURI()); - writer.writeAttribute(PolicyConstants.NAME, policyIntent.getName().getPrefix() + COLON - + policyIntent.getName().getLocalPart()); - if (policyIntent instanceof ProfileIntent) { - ProfileIntent profileIntent = (ProfileIntent)policyIntent; - if (profileIntent.getRequiredIntents() != null && profileIntent.getRequiredIntents().size() > 0) { - StringBuffer sb = new StringBuffer(); - for (Intent requiredIntents : profileIntent.getRequiredIntents()) { - sb.append(requiredIntents.getName()); - sb.append(" "); - } - writer.writeAttribute(PolicyConstants.REQUIRES, sb.toString()); - } - } else { - if (policyIntent.getExcludedIntents() != null && policyIntent.getExcludedIntents().size() > 0) { - StringBuffer sb = new StringBuffer(); - for (Intent excludedIntents : policyIntent.getExcludedIntents()) { - sb.append(excludedIntents.getName()); - sb.append(" "); - } - writer.writeAttribute(PolicyConstants.EXCLUDES, sb.toString()); - } - } - - if (!(policyIntent instanceof QualifiedIntent)) { - if (policyIntent.getConstrains() != null && policyIntent.getConstrains().size() > 0) { - StringBuffer sb = new StringBuffer(); - for (QName contrainedArtifact : policyIntent.getConstrains()) { - sb.append(contrainedArtifact.toString()); - sb.append(" "); - } - writer.writeAttribute(CONSTRAINS, sb.toString()); - } else { - error("ContrainsAttributeMissing", policyIntent, policyIntent.getName()); - //throw new ContributionWriteException("Contrains attribute missing from " + - //"Policy Intent Definition" + policyIntent.getName()); - } - } - - if (policyIntent.getDescription() != null && policyIntent.getDescription().length() > 0) { - writer.writeStartElement(PolicyConstants.SCA10_NS, DESCRIPTION); - writer.writeCData(policyIntent.getDescription()); - writer.writeEndElement(); - } - - writer.writeEndElement(); - } - - //FIXME This method is never used - // private Intent resolveRequiredIntents(ProfileIntent policyIntent, ModelResolver resolver) throws ContributionResolveException { - // boolean isUnresolved = false; - // //FIXME: Need to check for cyclic references first i.e an A requiring B and then B requiring A... - // if (policyIntent != null && policyIntent.isUnresolved()) { - // - // //resolve all required intents - // List<Intent> requiredIntents = new ArrayList<Intent>(); - // for (Intent requiredIntent : policyIntent.getRequiredIntents()) { - // if ( requiredIntent.isUnresolved() ) { - // //policyIntent.getRequiredIntents().remove(requiredIntent); - // requiredIntent = resolver.resolveModel(Intent.class, requiredIntent); - // requiredIntents.add(requiredIntent); - // if (requiredIntent.isUnresolved()) { - // isUnresolved = true; - // } - // } - // } - // policyIntent.getRequiredIntents().clear(); - // policyIntent.getRequiredIntents().addAll(requiredIntents); - // } - // policyIntent.setUnresolved(isUnresolved); - // - // return policyIntent; - // } - - //FIXME This method is never used - // private Intent resolveQualifiableIntent(QualifiedIntent policyIntent, ModelResolver resolver) throws ContributionResolveException { - // boolean isUnresolved = false; - // - // if (policyIntent != null && policyIntent.isUnresolved()) { - // //resolve the qualifiable intent - // Intent qualifiableIntent = - // resolver.resolveModel(Intent.class, policyIntent.getQualifiableIntent()); - // policyIntent.setQualifiableIntent(qualifiableIntent); - // isUnresolved = qualifiableIntent.isUnresolved(); - // } - // policyIntent.setUnresolved(isUnresolved); - // - // return policyIntent; - // } - - private void resolveContrainedArtifacts(Intent policyIntent, ModelResolver resolver) { - //FIXME : need to figure out this resolution. - policyIntent.setUnresolved(false); - } - - private void resolveProfileIntent(ProfileIntent policyIntent, ModelResolver resolver) - throws ContributionResolveException { - // FIXME: Need to check for cyclic references first i.e an A requiring B - // and then B requiring A... - if (policyIntent != null) { - // resolve all required intents - List<Intent> requiredIntents = new ArrayList<Intent>(); - for (Intent requiredIntent : policyIntent.getRequiredIntents()) { - if (requiredIntent.isUnresolved()) { - Intent resolvedRequiredIntent = resolver.resolveModel(Intent.class, requiredIntent); - // At this point, when the required intent is not resolved, it does not mean - // its undeclared, chances are that their dependency are not resolved yet. - // Lets try to resolve them first. - if (resolvedRequiredIntent.isUnresolved()) { - if (resolvedRequiredIntent instanceof ProfileIntent) { - if ((((ProfileIntent)resolvedRequiredIntent).getRequiredIntents()).contains(policyIntent)) { - error("CyclicReferenceFound", resolver, requiredIntent, policyIntent); - return; - } - resolveDependent(resolvedRequiredIntent, resolver); - } - } - - if (!resolvedRequiredIntent.isUnresolved()) { - requiredIntents.add(resolvedRequiredIntent); - } else { - error("RequiredIntentNotFound", resolver, requiredIntent, policyIntent); - return; - //throw new ContributionResolveException("Required Intent - " + requiredIntent - //+ " not found for ProfileIntent " + policyIntent); - } - } else { - requiredIntents.add(requiredIntent); - } - } - policyIntent.getRequiredIntents().clear(); - policyIntent.getRequiredIntents().addAll(requiredIntents); - } - } - - private void resolveQualifiedIntent(QualifiedIntent policyIntent, ModelResolver resolver) - throws ContributionResolveException { - if (policyIntent != null) { - //resolve the qualifiable intent - Intent qualifiableIntent = policyIntent.getQualifiableIntent(); - if (qualifiableIntent.isUnresolved()) { - Intent resolvedQualifiableIntent = resolver.resolveModel(Intent.class, qualifiableIntent); - // At this point, when the qualifiable intent is not resolved, it does not mean - // its undeclared, chances are that their dependency are not resolved yet. - // Lets try to resolve them first. - if (resolvedQualifiableIntent.isUnresolved()) { - if (resolvedQualifiableIntent instanceof QualifiedIntent) { - resolveDependent(resolvedQualifiableIntent, resolver); - } - } - - if (!resolvedQualifiableIntent.isUnresolved()) { - policyIntent.setQualifiableIntent(resolvedQualifiableIntent); - } else { - error("QualifiableIntentNotFound", resolver, qualifiableIntent, policyIntent); - //throw new ContributionResolveException("Qualifiable Intent - " + qualifiableIntent - //+ " not found for QualifiedIntent " + policyIntent); - } - } - } - } - - public void resolveDependent(Intent policyIntent, ModelResolver resolver) throws ContributionResolveException { - if (policyIntent instanceof ProfileIntent) - resolveProfileIntent((ProfileIntent)policyIntent, resolver); - - if (policyIntent instanceof QualifiedIntent) - resolveQualifiedIntent((QualifiedIntent)policyIntent, resolver); - - resolveContrainedArtifacts(policyIntent, resolver); - } - - public void resolve(T policyIntent, ModelResolver resolver) throws ContributionResolveException { - if (policyIntent instanceof ProfileIntent) { - resolveProfileIntent((ProfileIntent)policyIntent, resolver); - } else { - resolveExcludedIntents(policyIntent, resolver); - } - - if (policyIntent instanceof QualifiedIntent) { - resolveQualifiedIntent((QualifiedIntent)policyIntent, resolver); - } - - resolveContrainedArtifacts(policyIntent, resolver); - - /* This is too late in the processing - if ( !policyIntent.isUnresolved() ) { - resolver.addModel(policyIntent); - } - */ - } - - public QName getArtifactType() { - return POLICY_INTENT_QNAME; - } - - private void readConstrainedArtifacts(Intent policyIntent, XMLStreamReader reader) throws ContributionReadException { - String value = reader.getAttributeValue(null, CONSTRAINS); - if (policyIntent instanceof QualifiedIntent && value != null) { - error("ErrorInPolicyIntentDefinition", - policyIntent, - policyIntent.getName(), - QUALIFIED_INTENT_CONSTRAINS_ERROR); - //String errorMsg = "Error in PolicyIntent Definition - " + policyIntent.getName() + QUALIFIED_INTENT_CONSTRAINS_ERROR; - //throw new ContributionReadException(errorMsg); - } else { - if (value != null) { - List<QName> constrainedArtifacts = policyIntent.getConstrains(); - for (StringTokenizer tokens = new StringTokenizer(value); tokens.hasMoreTokens();) { - QName qname = getQNameValue(reader, tokens.nextToken()); - constrainedArtifacts.add(qname); - } - } - } - } - - private void readRequiredIntents(ProfileIntent policyIntent, XMLStreamReader reader) { - String value = reader.getAttributeValue(null, REQUIRES); - if (value != null) { - List<Intent> requiredIntents = policyIntent.getRequiredIntents(); - for (StringTokenizer tokens = new StringTokenizer(value); tokens.hasMoreTokens();) { - QName qname = getQNameValue(reader, tokens.nextToken()); - Intent intent = policyFactory.createIntent(); - intent.setName(qname); - intent.setUnresolved(true); - requiredIntents.add(intent); - } - } - } - - private void readExcludedIntents(Intent policyIntent, XMLStreamReader reader) { - String value = reader.getAttributeValue(null, "excludes"); - if (value != null) { - List<Intent> excludedIntents = policyIntent.getExcludedIntents(); - for (StringTokenizer tokens = new StringTokenizer(value); tokens.hasMoreTokens();) { - QName qname = getQNameValue(reader, tokens.nextToken()); - Intent intent = policyFactory.createIntent(); - intent.setName(qname); - intent.setUnresolved(true); - excludedIntents.add(intent); - } - } - } - - private void resolveExcludedIntents(Intent policyIntent, ModelResolver resolver) - throws ContributionResolveException { - if (policyIntent != null) { - // resolve all excluded intents - List<Intent> excludedIntents = new ArrayList<Intent>(); - for (Intent excludedIntent : policyIntent.getExcludedIntents()) { - if (excludedIntent.isUnresolved()) { - Intent resolvedExcludedIntent = resolver.resolveModel(Intent.class, excludedIntent); - if (!resolvedExcludedIntent.isUnresolved()) { - excludedIntents.add(resolvedExcludedIntent); - } else { - error("ExcludedIntentNotFound", resolver, excludedIntent, policyIntent); - return; - //throw new ContributionResolveException("Excluded Intent " + excludedIntent - //+ " not found for intent " + policyIntent); - } - } else { - excludedIntents.add(excludedIntent); - } - } - policyIntent.getExcludedIntents().clear(); - policyIntent.getExcludedIntents().addAll(excludedIntents); - } - } - -} |