diff options
Diffstat (limited to 'branches/sca-java-1.x/modules/core-spi/src/main/java/org/apache/tuscany/sca/provider/DefaultSCADefinitionsProviderExtensionPoint.java')
-rw-r--r-- | branches/sca-java-1.x/modules/core-spi/src/main/java/org/apache/tuscany/sca/provider/DefaultSCADefinitionsProviderExtensionPoint.java | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/branches/sca-java-1.x/modules/core-spi/src/main/java/org/apache/tuscany/sca/provider/DefaultSCADefinitionsProviderExtensionPoint.java b/branches/sca-java-1.x/modules/core-spi/src/main/java/org/apache/tuscany/sca/provider/DefaultSCADefinitionsProviderExtensionPoint.java new file mode 100644 index 0000000000..068d0d12d7 --- /dev/null +++ b/branches/sca-java-1.x/modules/core-spi/src/main/java/org/apache/tuscany/sca/provider/DefaultSCADefinitionsProviderExtensionPoint.java @@ -0,0 +1,91 @@ +/* + * 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.provider; + +import java.lang.reflect.Constructor; +import java.util.ArrayList; +import java.util.List; +import java.util.Set; + +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.extensibility.ServiceDeclaration; +import org.apache.tuscany.sca.extensibility.ServiceDiscovery; + +/** + * Concrete Implementation for the SCADefinitionsProviderExtensionPoint + * + * @version $Rev$ $Date$ + */ +public class DefaultSCADefinitionsProviderExtensionPoint implements + SCADefinitionsProviderExtensionPoint { + + private ExtensionPointRegistry extensionPointRegistry = null; + + private List<SCADefinitionsProvider> scaDefnsProviders = new ArrayList<SCADefinitionsProvider>(); + + public DefaultSCADefinitionsProviderExtensionPoint(ExtensionPointRegistry extnPtReg) { + this.extensionPointRegistry = extnPtReg; + } + + public void addSCADefinitionsProvider(SCADefinitionsProvider provider) { + scaDefnsProviders.add(provider); + } + + public void removeSCADefinitionsProvider(SCADefinitionsProvider provider) { + scaDefnsProviders.remove(provider); + } + + public List<SCADefinitionsProvider> getSCADefinitionsProviders() { + if (scaDefnsProviders.isEmpty()) { + loadProviders(); + } + return scaDefnsProviders; + } + + private void loadProviders() { + // Get the provider service declarations + Set<ServiceDeclaration> defnProviderDecls; + SCADefinitionsProvider aProvider = null; + Class providerClass = null; + Constructor constructor = null; + + try { + defnProviderDecls = + ServiceDiscovery.getInstance().getServiceDeclarations(SCADefinitionsProvider.class); + + for (ServiceDeclaration aDefnProviderDecl : defnProviderDecls) { + providerClass = aDefnProviderDecl.loadClass(); + + try { + constructor = providerClass.getConstructor(); + aProvider = (SCADefinitionsProvider)constructor.newInstance(); + } catch (NoSuchMethodException e1) { + constructor = providerClass.getConstructor(ExtensionPointRegistry.class); + aProvider = (SCADefinitionsProvider)constructor.newInstance(extensionPointRegistry); + } + + scaDefnsProviders.add(aProvider); + } + } catch (Exception e) { + throw new RuntimeException(e); + } + + } +} |