diff options
Diffstat (limited to 'sca-java-1.x/tags/1.6/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleURLArtifactProcessor.java')
-rw-r--r-- | sca-java-1.x/tags/1.6/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleURLArtifactProcessor.java | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleURLArtifactProcessor.java b/sca-java-1.x/tags/1.6/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleURLArtifactProcessor.java new file mode 100644 index 0000000000..8427098035 --- /dev/null +++ b/sca-java-1.x/tags/1.6/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleURLArtifactProcessor.java @@ -0,0 +1,143 @@ +/* + * 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.net.URI; +import java.net.URL; + +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.UnrecognizedElementException; +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.monitor.impl.ProblemImpl; + +/** + * Implementation of an extensible URL artifact processor. + * + * Takes a URLArtifactProcessorExtensionPoint and delegates to the proper URLArtifactProcessor + * by either fileName or fileExtention + * + * @version $Rev$ $Date$ + */ +public class ExtensibleURLArtifactProcessor + implements URLArtifactProcessor<Object> { + + private URLArtifactProcessorExtensionPoint processors; + private Monitor monitor; + + /** + * Constructs a new ExtensibleURLArtifactProcessor. + * + * @param processors + */ + public ExtensibleURLArtifactProcessor(URLArtifactProcessorExtensionPoint processors, Monitor monitor) { + this.processors = processors; + 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 = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters); + monitor.problem(problem); + } + } + + @SuppressWarnings("unchecked") + public Object read(URL contributionURL, URI sourceURI, URL sourceURL) throws ContributionReadException { + URLArtifactProcessor<Object> processor = null; + + // Delegate to the processor associated with file extension + String fileName = getFileName(sourceURL); + + //try to retrieve a processor for the specific filename + processor = (URLArtifactProcessor<Object>)processors.getProcessor(fileName); + + if (processor == null) { + //try to find my file type (extension) + String extension = sourceURL.getPath(); + + int extensionStart = extension.lastIndexOf('.'); + //handle files without extension (e.g NOTICE) + if (extensionStart > 0) { + extension = extension.substring(extensionStart); + processor = (URLArtifactProcessor<Object>)processors.getProcessor(extension); + } + } + + if (processor == null) { + return null; + } + return processor.read(contributionURL, sourceURI, sourceURL); + } + + @SuppressWarnings("unchecked") + public void resolve(Object model, ModelResolver resolver) throws ContributionResolveException { + + // Delegate to the processor associated with the model type + if (model != null) { + URLArtifactProcessor processor = processors.getProcessor(model.getClass()); + if (processor != null) { + processor.resolve(model, resolver); + } + } + } + + public <M> M read(URL contributionURL, URI artifactURI, URL artifactUrl, Class<M> type) + throws ContributionReadException { + Object mo = read(contributionURL, artifactURI, artifactUrl); + if (type.isInstance(mo)) { + return type.cast(mo); + } else { + UnrecognizedElementException e = new UnrecognizedElementException(null); + e.setResourceURI(artifactURI.toString()); + error("UnrecognizedElementException", processors, artifactURI.toString()); + throw e; + } + } + + public String getArtifactType() { + return null; + } + + public Class<Object> getModelType() { + return null; + } + + /** + * Returns the file name from a URL. + * @param url + * @return + */ + private static String getFileName(URL url){ + String fileName = url.getPath(); + int pos = fileName.lastIndexOf("/"); + + return fileName.substring(pos +1); + } +} |