diff options
Diffstat (limited to '')
-rw-r--r-- | branches/sca-java-1.0.1/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionMetadataDocumentProcessor.java | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/branches/sca-java-1.0.1/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionMetadataDocumentProcessor.java b/branches/sca-java-1.0.1/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionMetadataDocumentProcessor.java new file mode 100644 index 0000000000..8189914ffb --- /dev/null +++ b/branches/sca-java-1.0.1/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionMetadataDocumentProcessor.java @@ -0,0 +1,108 @@ +/* + * 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.service.impl; + +import java.io.IOException; +import java.io.InputStream; +import java.net.URL; +import java.net.URLClassLoader; +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; + +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.ContributionFactory; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; + +/** + * MetadataDocumentProcessor that handles contribution metadata files + * + * @version $Rev$ $Date$ + */ +public class ContributionMetadataDocumentProcessor { + protected final URLClassLoader classLoader; + protected final StAXArtifactProcessor staxProcessor; + protected final AssemblyFactory assemblyFactory; + protected final ContributionFactory contributionFactory; + protected final XMLInputFactory inputFactory; + + public ContributionMetadataDocumentProcessor(URLClassLoader classLoader, StAXArtifactProcessor staxProcessor, AssemblyFactory assemblyFactory, ContributionFactory contributionFactory, XMLInputFactory inputFactory) { + super(); + this.classLoader = classLoader; + this.staxProcessor = staxProcessor; + this.assemblyFactory = assemblyFactory; + this.contributionFactory = contributionFactory; + this.inputFactory = inputFactory; + } + + private Contribution mergeContributionMetadata(Contribution contrib1, Contribution contrib2 ) { + contrib1.getDeployables().addAll(contrib2.getDeployables()); + contrib1.getImports().addAll(contrib2.getImports()); + contrib1.getExports().addAll(contrib2.getExports()); + + return contrib1; + } + + public void read(Contribution contribution) throws XMLStreamException, ContributionReadException { + List<URL> artifactList = new ArrayList<URL>(2); + //set generated first, as the user created one ovverrides generated information + artifactList.add(this.classLoader.getResource(Contribution.SCA_CONTRIBUTION_GENERATED_META)); + artifactList.add(this.classLoader.getResource(Contribution.SCA_CONTRIBUTION_META)); + + URL artifactURL = null; + InputStream artifactStream = null; + Iterator artifactIterator = artifactList.iterator(); + while( artifactIterator.hasNext() ){ + + try { + artifactURL = (URL) artifactIterator.next(); + if( artifactURL != null) { + artifactStream = artifactURL.openStream(); + XMLStreamReader reader = inputFactory.createXMLStreamReader(artifactStream); + reader.nextTag(); + + Contribution contributionMetadata = (Contribution) staxProcessor.read(reader); + if (contributionMetadata != null) { + this.mergeContributionMetadata(contribution, contributionMetadata); + } + } + + } catch (XMLStreamException e) { + throw new ContributionReadException(e); + } catch (IOException e) { + throw new ContributionReadException(e); + } finally { + try { + if (artifactStream != null) { + artifactStream.close(); + artifactStream = null; + } + } catch (IOException ioe) { + //ignore + } + } + } + } +} |