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Diffstat (limited to '')
-rw-r--r-- | sca-java-1.x/tags/1.6.1-RC1/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportListener.java | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6.1-RC1/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportListener.java b/sca-java-1.x/tags/1.6.1-RC1/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportListener.java new file mode 100644 index 0000000000..7ea09a47c7 --- /dev/null +++ b/sca-java-1.x/tags/1.6.1-RC1/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportListener.java @@ -0,0 +1,98 @@ +/* + * 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.namespace.impl; + +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.Export; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.contribution.namespace.NamespaceExport; +import org.apache.tuscany.sca.contribution.namespace.NamespaceImport; +import org.apache.tuscany.sca.contribution.resolver.DefaultImportAllModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionListener; +import org.apache.tuscany.sca.contribution.service.ContributionRepository; + +/** + * Namespace Import/Export contribution listener + * The listener would process all import/export from a given contribution + * and initialize the model resolvers properly + * + * @version $Rev$ $Date$ + */ +public class NamespaceImportExportListener implements ContributionListener { + + /** + * Initialize the import/export model resolvers + * Export model resolvers are same as Contribution model resolver + * Import model resolvers are matched to a specific contribution if a location URI is specified, + * otherwise it try to resolve against all the other contributions + * Also set the exporting contributions used by contribution ClassLoaders to + * match import/export for class loading. + */ + public void contributionAdded(ContributionRepository repository, Contribution contribution) { + // Initialize the contribution exports + for (Export export: contribution.getExports()) { + export.setModelResolver(contribution.getModelResolver()); + } + + // Initialize the contribution imports + for (Import import_: contribution.getImports()) { + boolean initialized = false; + + if (import_ instanceof NamespaceImport) { + NamespaceImport namespaceImport = (NamespaceImport)import_; + + // Find a matching contribution + if (namespaceImport.getLocation() != null) { + Contribution targetContribution = repository.getContribution(namespaceImport.getLocation()); + if (targetContribution != null) { + + // Find a matching contribution export + for (Export export: targetContribution.getExports()) { + if (export instanceof NamespaceExport) { + NamespaceExport namespaceExport = (NamespaceExport)export; + if (namespaceImport.getNamespace().equals(namespaceExport.getNamespace())) { + namespaceImport.setModelResolver(namespaceExport.getModelResolver()); + initialized = true; + break; + } + } + } + } + } + + //if no location was specified, try to resolve with any contribution + if( !initialized ) { + // Use a resolver that will consider all contributions + import_.setModelResolver(new DefaultImportAllModelResolver(import_, repository.getContributions())); + } + } + } + + } + + public void contributionRemoved(ContributionRepository repository, Contribution contribution) { + + } + + public void contributionUpdated(ContributionRepository repository, Contribution oldContribution, Contribution contribution) { + + } + +} |