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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultURLArtifactProcessorExtensionPoint.java | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultURLArtifactProcessorExtensionPoint.java b/sca-java-2.x/tags/2.0-Beta1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultURLArtifactProcessorExtensionPoint.java deleted file mode 100644 index e22d7762fa..0000000000 --- a/sca-java-2.x/tags/2.0-Beta1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultURLArtifactProcessorExtensionPoint.java +++ /dev/null @@ -1,320 +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.contribution.processor; - -import java.io.IOException; -import java.lang.reflect.Constructor; -import java.net.URI; -import java.net.URL; -import java.util.ArrayList; -import java.util.Collection; -import java.util.Collections; -import java.util.List; -import java.util.Map; -import java.util.regex.Pattern; - -import javax.xml.stream.XMLInputFactory; -import javax.xml.stream.XMLOutputFactory; - -import org.apache.tuscany.sca.contribution.resolver.ModelResolver; -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.core.FactoryExtensionPoint; -import org.apache.tuscany.sca.extensibility.ServiceDeclaration; - -/** - * The default implementation of a URL artifact processor extension point. - * - * @version $Rev$ $Date$ - */ -public class DefaultURLArtifactProcessorExtensionPoint extends - DefaultArtifactProcessorExtensionPoint<URLArtifactProcessor<?>> implements URLArtifactProcessorExtensionPoint { - - private ExtensionPointRegistry registry; - private StAXArtifactProcessor<?> staxProcessor; - private boolean loaded; - - /** - * Constructs a new extension point. - */ - public DefaultURLArtifactProcessorExtensionPoint(ExtensionPointRegistry extensionPoints) { - this.registry = extensionPoints; - FactoryExtensionPoint modelFactories = this.registry.getExtensionPoint(FactoryExtensionPoint.class); - XMLInputFactory inputFactory = modelFactories.getFactory(XMLInputFactory.class); - XMLOutputFactory outputFactory = modelFactories.getFactory(XMLOutputFactory.class); - StAXArtifactProcessorExtensionPoint staxProcessors = - extensionPoints.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class); - staxProcessor = new ExtensibleStAXArtifactProcessor(staxProcessors, inputFactory, outputFactory); - } - - public void addArtifactProcessor(URLArtifactProcessor<?> artifactProcessor) { - if (artifactProcessor.getArtifactType() != null) { - Pattern pattern = Pattern.compile(wildcard2regex(artifactProcessor.getArtifactType())); - processorsByArtifactType.put(pattern, artifactProcessor); - } - if (artifactProcessor.getModelType() != null) { - processorsByModelType.put(artifactProcessor.getModelType(), artifactProcessor); - } - } - - public void removeArtifactProcessor(URLArtifactProcessor<?> artifactProcessor) { - if (artifactProcessor.getArtifactType() != null) { - String regex = wildcard2regex(artifactProcessor.getArtifactType()); - for (Object key : processorsByArtifactType.keySet()) { - if ((key instanceof Pattern) && ((Pattern)key).pattern().equals(regex)) { - processorsByArtifactType.remove(key); - } - } - processorsByArtifactType.remove((Object)artifactProcessor.getArtifactType()); - } - if (artifactProcessor.getModelType() != null) { - processorsByModelType.remove(artifactProcessor.getModelType()); - } - } - - @SuppressWarnings("unchecked") - @Override - public <T> URLArtifactProcessor<T> getProcessor(Class<T> modelType) { - loadProcessors(); - return (URLArtifactProcessor<T>)super.getProcessor(modelType); - } - - public Collection<URLArtifactProcessor<?>> getProcessors(Object artifactType) { - loadProcessors(); - String uri = (String)artifactType; - if (uri.endsWith("/")) { - // Ignore directories - return Collections.emptyList(); - } - if (!uri.startsWith("/")) { - uri = "/" + uri; - } - List<URLArtifactProcessor<?>> processors = new ArrayList<URLArtifactProcessor<?>>(); - for (Map.Entry<Object, URLArtifactProcessor<?>> e : processorsByArtifactType.entrySet()) { - Pattern pattern = (Pattern)e.getKey(); - if (pattern.matcher(uri).matches()) { - processors.add(e.getValue()); - } - } - return processors; - } - - @SuppressWarnings("unchecked") - public URLArtifactProcessor<?> getProcessor(Object artifactType) { - Collection<URLArtifactProcessor<?>> processors = getProcessors(artifactType); - return processors.isEmpty() ? null : processors.iterator().next(); - } - - private static String wildcard2regex(String pattern) { - String wildcard = pattern; - if (wildcard.endsWith("/")) { - // Directory: xyz/ --> xyz/** - wildcard = wildcard + "**"; - } - if (wildcard.startsWith(".")) { - // File extension: .xyz --> **/*.xyz - wildcard = "**/*" + wildcard; - } else if (wildcard.indexOf('/') == -1) { - // File name: abc.txt --> **/abc.txt - wildcard = "**/" + wildcard; - } else if (!(wildcard.startsWith("/") || wildcard.startsWith("**"))) { - wildcard = '/' + wildcard; - } - StringBuffer regex = new StringBuffer(); - char[] chars = wildcard.toCharArray(); - for (int i = 0; i < chars.length; i++) { - switch (chars[i]) { - case '*': - if (i < chars.length - 1 && chars[i + 1] == '*') { - // Next char is '*' - if (i < chars.length - 2) { - if (chars[i + 2] == '/') { - // The wildcard is **/, it matches zero or more directories - regex.append("(.*/)*"); - i += 2; // Skip */ - } else { - // ** can only be followed by / - throw new IllegalArgumentException("** can only be used as the name for a directory"); - } - } else { - regex.append(".*"); - i++; // Skip next * - } - } else { - // Non-directory - regex.append("[^/]*"); - } - break; - case '?': - regex.append("[^/]"); - break; - case '\\': - case '|': - case '(': - case ')': - // case '[': - // case ']': - // case '{': - // case '}': - case '^': - case '$': - case '+': - case '.': - case '<': - case '>': - regex.append("\\").append(chars[i]); - break; - default: - regex.append(chars[i]); - break; - } - } - return regex.toString(); - } - - /** - * Lazily load artifact processors registered in the extension point. - */ - private synchronized void loadProcessors() { - if (loaded) - return; - - // Get the processor service declarations - Collection<ServiceDeclaration> processorDeclarations; - try { - processorDeclarations = - registry.getServiceDiscovery().getServiceDeclarations(URLArtifactProcessor.class.getName()); - } catch (IOException e) { - IllegalStateException ie = new IllegalStateException(e); - throw ie; - } - - for (ServiceDeclaration processorDeclaration : processorDeclarations) { - Map<String, String> attributes = processorDeclaration.getAttributes(); - // Load a URL artifact processor - String artifactType = attributes.get("type"); - String modelTypeName = attributes.get("model"); - - // Create a processor wrapper and register it - URLArtifactProcessor<?> processor = - new LazyURLArtifactProcessor(artifactType, modelTypeName, processorDeclaration, registry, - staxProcessor); - addArtifactProcessor(processor); - } - - loaded = true; - } - - /** - * A wrapper around an Artifact processor class allowing lazy loading and - * initialization of artifact processors. - */ - private static class LazyURLArtifactProcessor implements ExtendedURLArtifactProcessor { - - private ExtensionPointRegistry extensionPoints; - private String artifactType; - private String modelTypeName; - private ServiceDeclaration processorDeclaration; - private URLArtifactProcessor<?> processor; - private Class<?> modelType; - private StAXArtifactProcessor<?> staxProcessor; - - LazyURLArtifactProcessor(String artifactType, - String modelTypeName, - ServiceDeclaration processorDeclaration, - ExtensionPointRegistry extensionPoints, - StAXArtifactProcessor<?> staxProcessor) { - this.artifactType = artifactType; - this.modelTypeName = modelTypeName; - this.processorDeclaration = processorDeclaration; - this.extensionPoints = extensionPoints; - this.staxProcessor = staxProcessor; - } - - public String getArtifactType() { - return artifactType; - } - - @SuppressWarnings("unchecked") - private URLArtifactProcessor getProcessor() { - if (processor == null) { - try { - FactoryExtensionPoint modelFactories = - extensionPoints.getExtensionPoint(FactoryExtensionPoint.class); - Class<URLArtifactProcessor> processorClass = - (Class<URLArtifactProcessor>)processorDeclaration.loadClass(); - try { - Constructor<URLArtifactProcessor> constructor = - processorClass.getConstructor(FactoryExtensionPoint.class); - processor = constructor.newInstance(modelFactories); - } catch (NoSuchMethodException e) { - try { - Constructor<URLArtifactProcessor> constructor = - processorClass.getConstructor(FactoryExtensionPoint.class, - StAXArtifactProcessor.class); - processor = constructor.newInstance(modelFactories, staxProcessor); - } catch (NoSuchMethodException e2) { - Constructor<URLArtifactProcessor> constructor = - processorClass.getConstructor(ExtensionPointRegistry.class, - StAXArtifactProcessor.class); - processor = constructor.newInstance(extensionPoints, staxProcessor); - } - } - } catch (Throwable e) { - IllegalStateException ie = new IllegalStateException("Exception during getProcessor() for " + - processorDeclaration.getClassName(), e); - throw ie; - } - } - return processor; - } - - public Object read(URL contributionURL, URI artifactURI, URL artifactURL, ProcessorContext context) throws ContributionReadException { - return getProcessor().read(contributionURL, artifactURI, artifactURL, context); - } - - public Class<?> getModelType() { - if (modelTypeName != null && modelType == null) { - try { - modelType = processorDeclaration.loadClass(modelTypeName); - } catch (ClassNotFoundException e) { - IllegalStateException ie = new IllegalStateException(e); - throw ie; - } - } - return modelType; - } - - @SuppressWarnings("unchecked") - public void resolve(Object model, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { - getProcessor().resolve(model, resolver, context); - } // end method resolve - - /** - * Preresolve phase, for ExtendedURLArtifactProcessors only - */ - @SuppressWarnings("unchecked") - public void preResolve( Object model, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { - URLArtifactProcessor<?> processor = getProcessor(); - if( processor instanceof ExtendedURLArtifactProcessor ) { - ((ExtendedURLArtifactProcessor)processor).preResolve(model, resolver, context); - } // end if - } // end method resolve - - } // end class LazyURLArtifactProcessor -} // end class DefaultURLArtifactProcessorExtensionPoint |