diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/DefaultContributionScannerExtensionPoint.java')
-rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/DefaultContributionScannerExtensionPoint.java | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/DefaultContributionScannerExtensionPoint.java b/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/DefaultContributionScannerExtensionPoint.java deleted file mode 100644 index c5aed5ccd3..0000000000 --- a/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/DefaultContributionScannerExtensionPoint.java +++ /dev/null @@ -1,131 +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.scanner; - -import java.io.IOException; -import java.lang.reflect.Constructor; -import java.util.Collection; -import java.util.HashMap; -import java.util.List; -import java.util.Map; - -import org.apache.tuscany.sca.contribution.Artifact; -import org.apache.tuscany.sca.contribution.Contribution; -import org.apache.tuscany.sca.contribution.ContributionFactory; -import org.apache.tuscany.sca.contribution.processor.ContributionReadException; -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.core.FactoryExtensionPoint; -import org.apache.tuscany.sca.extensibility.ServiceDeclaration; - -/** - * Default implementation of a contribution scanner extension point. - * - * @version $Rev$ $Date$ - */ -public class DefaultContributionScannerExtensionPoint implements ContributionScannerExtensionPoint { - - private Map<String, ContributionScanner> scanners = new HashMap<String, ContributionScanner>(); - private boolean loaded; - private ExtensionPointRegistry registry; - - public DefaultContributionScannerExtensionPoint(ExtensionPointRegistry registry) { - this.registry = registry; - } - - public void addContributionScanner(ContributionScanner scanner) { - scanners.put(scanner.getContributionType(), scanner); - } - - public void removeContributionScanner(ContributionScanner scanner) { - scanners.remove(scanner.getContributionType()); - } - - public ContributionScanner getContributionScanner(String contentType) { - loadScanners(); - return scanners.get(contentType); - } - - private synchronized void loadScanners() { - if (loaded) - return; - - // Get the scanner service declarations - Collection<ServiceDeclaration> scannerDeclarations; - try { - scannerDeclarations = registry.getServiceDiscovery().getServiceDeclarations(ContributionScanner.class.getName()); - } catch (IOException e) { - throw new IllegalStateException(e); - } - - for (ServiceDeclaration scannerDeclaration: scannerDeclarations) { - Map<String, String> attributes = scannerDeclaration.getAttributes(); - - // Load a URL artifact scanner - String contributionType = attributes.get("type"); - - // Create a scanner wrapper and register it - ContributionScanner scanner = new LazyContributionScanner(registry, contributionType, scannerDeclaration); - addContributionScanner(scanner); - } - - loaded = true; - } - - /** - * A facade for contribution scanners. - */ - private static class LazyContributionScanner implements ContributionScanner { - private ExtensionPointRegistry registry; - private ServiceDeclaration scannerDeclaration; - private String contributionType; - private ContributionScanner scanner; - private ContributionFactory contributionFactory; - - private LazyContributionScanner(ExtensionPointRegistry registry, String contributionType, ServiceDeclaration scannerDeclaration) { - this.registry = registry; - this.scannerDeclaration = scannerDeclaration; - this.contributionType = contributionType; - - FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class); - this.contributionFactory = factories.getFactory(ContributionFactory.class); - } - - public List<Artifact> scan(Contribution contributionSourceURL) throws ContributionReadException { - return getScanner().scan(contributionSourceURL); - } - - public String getContributionType() { - return contributionType; - } - - private ContributionScanner getScanner() { - if (scanner == null) { - try { - Class<ContributionScanner> scannerClass = (Class<ContributionScanner>)scannerDeclaration.loadClass(); - Constructor<ContributionScanner> constructor = scannerClass.getConstructor(ContributionFactory.class); - scanner = constructor.newInstance(contributionFactory); - } catch (Exception e) { - throw new IllegalStateException(e); - } - } - return scanner; - } - } -} |