diff options
Diffstat (limited to 'tags/java/sca/2.0-M3-RC4/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicySetProcessor.java')
| -rw-r--r-- | tags/java/sca/2.0-M3-RC4/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicySetProcessor.java | 490 |
1 files changed, 0 insertions, 490 deletions
diff --git a/tags/java/sca/2.0-M3-RC4/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicySetProcessor.java b/tags/java/sca/2.0-M3-RC4/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicySetProcessor.java deleted file mode 100644 index 955788ce8f..0000000000 --- a/tags/java/sca/2.0-M3-RC4/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicySetProcessor.java +++ /dev/null @@ -1,490 +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 javax.xml.xpath.XPath; -import javax.xml.xpath.XPathExpressionException; -import javax.xml.xpath.XPathFactory; - -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.IntentMap; -import org.apache.tuscany.sca.policy.PolicyExpression; -import org.apache.tuscany.sca.policy.PolicyFactory; -import org.apache.tuscany.sca.policy.PolicySet; -import org.apache.tuscany.sca.policy.Qualifier; - -/** - * Processor for handling XML models of PolicySet definitions - * - * @version $Rev$ $Date$ - */ -public class PolicySetProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<PolicySet>, - PolicyConstants { - - private PolicyFactory policyFactory; - private StAXArtifactProcessor<Object> extensionProcessor; - private XPathFactory xpathFactory = XPathFactory.newInstance(); - private Monitor monitor; - - public PolicySetProcessor(FactoryExtensionPoint modelFactories, - StAXArtifactProcessor<Object> extensionProcessor, - Monitor monitor) { - this.policyFactory = modelFactories.getFactory(PolicyFactory.class); - this.extensionProcessor = extensionProcessor; - this.monitor = monitor; - } - - public PolicySetProcessor(PolicyFactory policyFactory, - StAXArtifactProcessor<Object> extensionProcessor, - Monitor monitor) { - this.policyFactory = policyFactory; - this.extensionProcessor = extensionProcessor; - this.monitor = monitor; - } - - /** - * Report a exception. - * - * @param problems - * @param message - * @param model - */ - private void error(String message, Object model, Exception ex) { - if (monitor != null) { - Problem problem = - monitor.createProblem(this.getClass().getName(), - "policy-xml-validation-messages", - Severity.ERROR, - model, - message, - ex); - monitor.problem(problem); - } - } - - /** - * 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 PolicySet read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { - PolicySet policySet = null; - - String policySetName = reader.getAttributeValue(null, NAME); - String appliesTo = reader.getAttributeValue(null, APPLIES_TO); - if (policySetName == null || appliesTo == null) { - if (policySetName == null) - error("PolicySetNameMissing", reader); - if (appliesTo == null) - error("PolicySetAppliesToMissing", reader); - return policySet; - } - - policySet = policyFactory.createPolicySet(); - policySet.setName(new QName(policySetName)); - - //TODO: with 1.0 version of specs the applies to xpath is given related to the immediate - //parent whereas the runtime evaluates the xpath aginst the composite element. What the runtime - //is doing is what the future version of the specs could be tending towards. When that happens - //this 'if' must be deleted - if (appliesTo != null && !appliesTo.startsWith("/")) { - appliesTo = "//" + appliesTo; - } - - policySet.setAppliesTo(appliesTo); - - XPath path = xpathFactory.newXPath(); - path.setNamespaceContext(reader.getNamespaceContext()); - try { - if (appliesTo != null) { - policySet.setAppliesToXPathExpression(path.compile(appliesTo)); - } - } catch (XPathExpressionException e) { - ContributionReadException ce = new ContributionReadException(e); - error("ContributionReadException", policySet, ce); - //throw ce; - } - - readProvidedIntents(policySet, reader); - - int event = reader.getEventType(); - QName name = null; - reader.next(); - while (reader.hasNext()) { - event = reader.getEventType(); - switch (event) { - case START_ELEMENT: { - name = reader.getName(); - if (POLICY_INTENT_MAP_QNAME.equals(name)) { - Intent mappedIntent = policyFactory.createIntent(); - String provides = reader.getAttributeValue(null, PROVIDES); - if (provides != null) { - mappedIntent.setName(getQName(reader, PROVIDES)); - if (policySet.getProvidedIntents().contains(mappedIntent)) { - readIntentMap(reader, policySet, mappedIntent); - } else { - error("IntentNotSpecified", policySet, policySetName); - //throw new ContributionReadException("Intent Map provides for Intent not specified as provided by parent PolicySet - " + policySetName); - } - } else { - error("IntentMapProvidesMissing", reader, policySetName); - } - } else if (POLICY_SET_REFERENCE_QNAME.equals(name)) { - PolicySet referredPolicySet = policyFactory.createPolicySet(); - String referencename = reader.getAttributeValue(null, NAME); - if (referencename != null) { - referredPolicySet.setName(getQName(reader, NAME)); - policySet.getReferencedPolicySets().add(referredPolicySet); - } else { - error("PolicySetReferenceNameMissing", reader, policySetName); - } - } /*else if ( WS_POLICY_QNAME.equals(name) ) { - OMElement policyElement = loadElement(reader); - org.apache.neethi.Policy wsPolicy = PolicyEngine.getPolicy(policyElement); - policySet.getPolicies().add(wsPolicy); - } */else { - Object extension = extensionProcessor.read(reader); - if (extension != null) { - PolicyExpression exp = policyFactory.createPolicyExpression(); - exp.setName(name); - exp.setPolicy(extension); - policySet.getPolicies().add(exp); - } - } - break; - } - } - if (event == END_ELEMENT) { - if (POLICY_SET_QNAME.equals(reader.getName())) { - break; - } - } - - //Read the next element - if (reader.hasNext()) { - reader.next(); - } - } - return policySet; - } - - public void readIntentMap(XMLStreamReader reader, PolicySet policySet, Intent mappedIntent) - throws ContributionReadException { - QName name = reader.getName(); - if (POLICY_INTENT_MAP_QNAME.equals(name)) { - - IntentMap intentMap = policyFactory.createIntentMap(); - QName intentName = getQName(reader, INTENT_MAP); - intentMap.setProvidedIntent(mappedIntent); - - policySet.getIntentMaps().add(intentMap); - - String qualifierName = null; - String qualfiedIntentName = null; - Intent qualifiedIntent = null; - - Qualifier qualifier = null; - - int event = reader.getEventType(); - try { - reader.next(); - while (reader.hasNext()) { - event = reader.getEventType(); - switch (event) { - case START_ELEMENT: { - name = reader.getName(); - if (POLICY_INTENT_MAP_QUALIFIER_QNAME.equals(name)) { - qualifierName = getString(reader, NAME); - if (qualifierName != null) { - qualfiedIntentName = - mappedIntent.getName().getLocalPart() + QUALIFIER + qualifierName; - qualifiedIntent = policyFactory.createIntent(); - qualifiedIntent.setName(new QName(mappedIntent.getName().getNamespaceURI(), - qualfiedIntentName)); - qualifier = policyFactory.createQualifier(); - qualifier.setIntent(qualifiedIntent); - intentMap.getQualifiers().add(qualifier); - - } else { - error("QualifierNameMissing", reader, policySet.getName()); - } - } else if (POLICY_INTENT_MAP_QNAME.equals(name)) { - QName providedIntent = getQName(reader, PROVIDES); - if (qualifierName.equals(providedIntent.getLocalPart())) { - readIntentMap(reader, policySet, qualifiedIntent); - } else { - error("IntentMapDoesNotMatch", - providedIntent, - providedIntent, - qualifierName, - policySet); - //throw new ContributionReadException("Intent provided by IntentMap " + - //providedIntent + " does not match parent qualifier " + qualifierName + - //" in policyset - " + policySet); - } - } else { - Object extension = extensionProcessor.read(reader); - if (extension != null && qualifier != null) { - PolicyExpression exp = policyFactory.createPolicyExpression(); - exp.setName(name); - exp.setPolicy(extension); - qualifier.getPolicies().add(exp); - } - } - break; - } - } - if (event == END_ELEMENT && POLICY_INTENT_MAP_QNAME.equals(reader.getName())) { - break; - } - //Read the next element - if (reader.hasNext()) { - reader.next(); - } - } - } catch (XMLStreamException e) { - ContributionReadException ce = new ContributionReadException(e); - error("ContributionReadException", reader, ce); - throw ce; - } - } - } - - public void write(PolicySet policySet, XMLStreamWriter writer) throws ContributionWriteException, - XMLStreamException { - - // Write an <sca:policySet> - writer.writeStartElement(SCA11_NS, POLICY_SET); - writer.writeNamespace(policySet.getName().getPrefix(), policySet.getName().getNamespaceURI()); - writer.writeAttribute(NAME, policySet.getName().getPrefix() + COLON + policySet.getName().getLocalPart()); - writer.writeAttribute(APPLIES_TO, policySet.getAppliesTo()); - writer.writeAttribute(ATTACH_TO, policySet.getAttachTo()); - - writeProvidedIntents(policySet, writer); - - writer.writeEndElement(); - } - - private void readProvidedIntents(PolicySet policySet, XMLStreamReader reader) { - String value = reader.getAttributeValue(null, PROVIDES); - if (value != null) { - List<Intent> providedIntents = policySet.getProvidedIntents(); - for (StringTokenizer tokens = new StringTokenizer(value); tokens.hasMoreTokens();) { - QName qname = getQNameValue(reader, tokens.nextToken()); - Intent intent = policyFactory.createIntent(); - intent.setName(qname); - providedIntents.add(intent); - } - } - } - - private void writeProvidedIntents(PolicySet policySet, XMLStreamWriter writer) throws XMLStreamException { - if (!policySet.getProvidedIntents().isEmpty()) { - StringBuffer sb = new StringBuffer(); - for (Intent providedIntents : policySet.getProvidedIntents()) { - sb.append(getQualifiedName(providedIntents.getName(), writer)); - sb.append(" "); - } - // Remove the last space - sb.deleteCharAt(sb.length() - 1); - writer.writeAttribute(PolicyConstants.PROVIDES, sb.toString()); - } - } - - private String getQualifiedName(QName name, XMLStreamWriter writer) throws XMLStreamException { - String local = name.getLocalPart(); - String prefix = writer.getPrefix(name.getNamespaceURI()); - if (prefix != null && prefix.length() > 0) { - return prefix + ':' + local; - } else { - return local; - } - } - - private void resolvePolicies(PolicySet policySet, ModelResolver resolver) throws ContributionResolveException { - boolean unresolved = false; - if (policySet != null) { - for (Object o : policySet.getPolicies()) { - extensionProcessor.resolve(o, resolver); - /*if ( o instanceof Policy && ((Policy)o).isUnresolved() ) { - unresolved = true; - }*/ - } - policySet.setUnresolved(unresolved); - } - } - - public QName getArtifactType() { - return POLICY_SET_QNAME; - } - - public Class<PolicySet> getModelType() { - return PolicySet.class; - } - - private void resolveProvidedIntents(PolicySet policySet, ModelResolver resolver) - throws ContributionResolveException { - if (policySet != null) { - //resolve all provided intents - List<Intent> providedIntents = new ArrayList<Intent>(); - for (Intent providedIntent : policySet.getProvidedIntents()) { - if (providedIntent.isUnresolved()) { - Intent resolved = resolver.resolveModel(Intent.class, providedIntent); - if (!resolved.isUnresolved() || resolved != providedIntent) { - providedIntents.add(resolved); - } else { - error("ProvidedIntentNotFound", policySet, providedIntent, policySet); - return; - //throw new ContributionResolveException("Provided Intent - " + providedIntent - //+ " not found for PolicySet " + policySet); - } - } else { - providedIntents.add(providedIntent); - } - } - policySet.getProvidedIntents().clear(); - policySet.getProvidedIntents().addAll(providedIntents); - } - } - - private void resolveIntentsInMappedPolicies(PolicySet policySet, ModelResolver resolver) - throws ContributionResolveException { - for (IntentMap intentMap : policySet.getIntentMaps()) { - Intent intent = intentMap.getProvidedIntent(); - if (intent.isUnresolved()) { - Intent resolved = resolver.resolveModel(Intent.class, intent); - if (!resolved.isUnresolved() || resolved != intent) { - intentMap.setProvidedIntent(resolved); - } else { - error("MappedIntentNotFound", policySet, intent, policySet); - return; - //throw new ContributionResolveException("Mapped Intent - " + mappedIntent - //+ " not found for PolicySet " + policySet); - } - } - for (Qualifier qualifier : intentMap.getQualifiers()) { - intent = qualifier.getIntent(); - if (intent.isUnresolved()) { - Intent resolved = resolver.resolveModel(Intent.class, intent); - if (!resolved.isUnresolved() || resolved != intent) { - qualifier.setIntent(resolved); - } else { - error("MappedIntentNotFound", policySet, intent, policySet); - return; - //throw new ContributionResolveException("Mapped Intent - " + mappedIntent - //+ " not found for PolicySet " + policySet); - } - } - for (PolicyExpression exp : qualifier.getPolicies()) { - // FIXME: How to resolve the policies? - } - } - } - - } - - private void resolveReferredPolicySets(PolicySet policySet, ModelResolver resolver) - throws ContributionResolveException { - - List<PolicySet> referredPolicySets = new ArrayList<PolicySet>(); - for (PolicySet referredPolicySet : policySet.getReferencedPolicySets()) { - if (referredPolicySet.isUnresolved()) { - PolicySet resolved = resolver.resolveModel(PolicySet.class, referredPolicySet); - if (!resolved.isUnresolved() || resolved != referredPolicySet) { - referredPolicySets.add(resolved); - } else { - error("ReferredPolicySetNotFound", policySet, referredPolicySet, policySet); - return; - //throw new ContributionResolveException("Referred PolicySet - " + referredPolicySet - //+ "not found for PolicySet - " + policySet); - } - } else { - referredPolicySets.add(referredPolicySet); - } - } - policySet.getReferencedPolicySets().clear(); - policySet.getReferencedPolicySets().addAll(referredPolicySets); - } - - private void includeReferredPolicySets(PolicySet policySet, PolicySet referredPolicySet) { - for (PolicySet furtherReferredPolicySet : referredPolicySet.getReferencedPolicySets()) { - includeReferredPolicySets(referredPolicySet, furtherReferredPolicySet); - } - policySet.getPolicies().addAll(referredPolicySet.getPolicies()); - policySet.getIntentMaps().addAll(referredPolicySet.getIntentMaps()); - } - - public void resolve(PolicySet policySet, ModelResolver resolver) throws ContributionResolveException { - resolveProvidedIntents(policySet, resolver); - resolveIntentsInMappedPolicies(policySet, resolver); - resolveReferredPolicySets(policySet, resolver); - - for (PolicySet referredPolicySet : policySet.getReferencedPolicySets()) { - includeReferredPolicySets(policySet, referredPolicySet); - } - - if (policySet.isUnresolved()) { - //resolve the policy attachments - resolvePolicies(policySet, resolver); - - /*if ( !policySet.isUnresolved() ) { - resolver.addModel(policySet); - }*/ - } - - policySet.setUnresolved(false); - } -} |