diff options
Diffstat (limited to 'tags/java/sca/2.0-M3/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/CompositeDocumentProcessor.java')
| -rw-r--r-- | tags/java/sca/2.0-M3/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/CompositeDocumentProcessor.java | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M3/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/CompositeDocumentProcessor.java b/tags/java/sca/2.0-M3/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/CompositeDocumentProcessor.java new file mode 100644 index 0000000000..ec059ace81 --- /dev/null +++ b/tags/java/sca/2.0-M3/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/CompositeDocumentProcessor.java @@ -0,0 +1,183 @@ +/* + * 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.assembly.xml; + +import java.io.ByteArrayInputStream; +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URL; +import java.net.URLConnection; +import java.util.Collection; + +import javax.xml.parsers.DocumentBuilderFactory; +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.assembly.Composite; +import org.apache.tuscany.sca.contribution.processor.ContributionReadException; +import org.apache.tuscany.sca.contribution.processor.ContributionResolveException; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.ValidatingXMLInputFactory; +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.policy.PolicySet; +import org.apache.tuscany.sca.policy.util.PolicyComputationUtils; + +/** + * A composite processor. + * + * @version $Rev$ $Date$ + */ +public class CompositeDocumentProcessor extends BaseAssemblyProcessor implements URLArtifactProcessor<Composite> { + private XMLInputFactory inputFactory; + private DocumentBuilderFactory documentBuilderFactory; + private Collection<PolicySet> domainPolicySets = null; + private Monitor monitor; + + /** + * Constructs a composite document processor + * @param modelFactories + * @param staxProcessor + * @param monitor + */ + public CompositeDocumentProcessor(FactoryExtensionPoint modelFactories, + StAXArtifactProcessor<?> staxProcessor, + Monitor monitor) { + super(modelFactories, staxProcessor, monitor); + this.inputFactory = modelFactories.getFactory(ValidatingXMLInputFactory.class); + this.documentBuilderFactory = modelFactories.getFactory(DocumentBuilderFactory.class); + this.monitor = monitor; + } + + /** + * Reads the contents of a Composite document and returns a Composite object + * @param contributionURL - the URL of the contribution containing the Composite - can be null + * @param uri - the URI of the composite document + * @param url - the URL of the composite document + * @return a Composite object built from the supplied Composite document + */ + public Composite read(URL contributionURL, URI uri, URL url) throws ContributionReadException { + if( uri == null || url == null ) { + throw new ContributionReadException("Request to read composite with uri or url NULL"); + } // end if + InputStream scdlStream = null; + try { + URLConnection connection; + if (url.getProtocol().equals("file")) { + File scdlFile = new File(url.toURI().getPath()); + connection = scdlFile.toURL().openConnection(); + } else { + connection = url.openConnection(); + } + connection.setUseCaches(false); + scdlStream = connection.getInputStream(); + } catch (IOException e) { + ContributionReadException ce = new ContributionReadException("Exception reading " + uri, e); + error("ContributionReadException", url, ce); + throw ce; + } catch (URISyntaxException e) { + ContributionReadException ce = new ContributionReadException("Exception reading " + uri, e); + error("ContributionReadException", url, ce); + throw ce; + } + return read(uri, scdlStream); + } + + public Composite read(URI uri, InputStream scdlStream) throws ContributionReadException { + try { + + Composite composite = null; + + // Tag the monitor with the name of the composite artifact + if( monitor != null ) { + monitor.setArtifactName(uri.toString()); + } //end if + + byte[] transformedArtifactContent; + try { + if ( domainPolicySets != null ) { + transformedArtifactContent = + PolicyComputationUtils.addApplicablePolicySets(scdlStream, domainPolicySets, documentBuilderFactory); + scdlStream = new ByteArrayInputStream(transformedArtifactContent); + } + } catch ( IOException e ) { + ContributionReadException ce = new ContributionReadException("Exception reading " + uri, e); + error("ContributionReadException", scdlStream, ce); + throw ce; + } catch ( Exception e ) { + ContributionReadException ce = new ContributionReadException("Exception reading " + uri, e); + error("ContributionReadException", scdlStream, ce); + //throw ce; + } + + XMLStreamReader reader = inputFactory.createXMLStreamReader(scdlStream); + + reader.nextTag(); + + // Read the composite model + composite = (Composite)extensionProcessor.read(reader); + if (composite != null) { + composite.setURI(uri.toString()); + } + + return composite; + + } catch (XMLStreamException e) { + ContributionReadException ce = new ContributionReadException("Exception reading " + uri, e); + error("ContributionReadException", inputFactory, ce); + throw ce; + } finally { + try { + if (scdlStream != null) { + scdlStream.close(); + scdlStream = null; + } + } catch (IOException ioe) { + //ignore + } + } + } + + public void resolve(Composite composite, ModelResolver resolver) throws ContributionResolveException { + try { + if (composite != null) + extensionProcessor.resolve(composite, resolver); + } catch (Throwable e ) { + // Add information about which composite was being processed when the exception occurred + String newMessage = "Processing composite " + composite.getName() + ": " + e.getMessage(); + throw new ContributionResolveException( newMessage, e ); + } // end try + } + + public String getArtifactType() { + return ".composite"; + } + + public Class<Composite> getModelType() { + return Composite.class; + } + +} // end class |