| /* |
| * 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.uima.impl; |
| |
| import java.util.Map; |
| |
| import org.apache.uima.ResourceFactory; |
| import org.apache.uima.resource.CustomResourceSpecifier; |
| import org.apache.uima.resource.Resource; |
| import org.apache.uima.resource.ResourceInitializationException; |
| import org.apache.uima.resource.ResourceManager; |
| import org.apache.uima.resource.ResourceSpecifier; |
| |
| /** |
| * Resource Factory that handles {@link CustomResourceSpecifier} elements. |
| */ |
| public class CustomResourceFactory_impl implements ResourceFactory { |
| /** |
| * @see org.apache.uima.ResourceFactory#produceResource(java.lang.Class, |
| * org.apache.uima.resource.ResourceSpecifier, java.util.Map) |
| */ |
| public Resource produceResource(Class aResourceClass, ResourceSpecifier aSpecifier, |
| Map aAdditionalParams) throws ResourceInitializationException { |
| |
| if (aSpecifier instanceof CustomResourceSpecifier) { |
| String className = ((CustomResourceSpecifier)aSpecifier).getResourceClassName(); |
| //check additional params map for ResourceManager, and use the UIMA extension ClassLoader |
| //if one exists |
| ClassLoader loader = null; |
| ResourceManager resMgr = null; |
| if (aAdditionalParams != null) { |
| resMgr = (ResourceManager)aAdditionalParams.get(Resource.PARAM_RESOURCE_MANAGER); |
| } |
| if (resMgr != null) { |
| loader = resMgr.getExtensionClassLoader(); |
| } |
| if (loader == null) { |
| loader = this.getClass().getClassLoader(); |
| } |
| |
| //load the Resourceclass |
| Class resourceClass; |
| try { |
| resourceClass = Class.forName(className, true, loader); |
| } catch (ClassNotFoundException e) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.CLASS_NOT_FOUND, new Object[] { className, |
| aSpecifier.getSourceUrlString() }, e); |
| } |
| |
| //check that the class implements the required interface |
| if (!aResourceClass.isAssignableFrom(resourceClass)) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.RESOURCE_DOES_NOT_IMPLEMENT_INTERFACE, |
| new Object[] { className, aResourceClass.getName(), |
| aSpecifier.getSourceUrlString() }); |
| } |
| |
| // instantiate this Resource Class |
| Resource resource; |
| try { |
| resource = (Resource) resourceClass.newInstance(); |
| } catch (InstantiationException e) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.COULD_NOT_INSTANTIATE, new Object[] { className, |
| aSpecifier.getSourceUrlString() }, e); |
| } catch (IllegalAccessException e) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.COULD_NOT_INSTANTIATE, new Object[] { className, |
| aSpecifier.getSourceUrlString() }, e); |
| } |
| // attempt to initialize it |
| boolean initializeOK = false; |
| try { |
| initializeOK = resource.initialize(aSpecifier, aAdditionalParams); |
| } catch (Exception e) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.EXCEPTION_WHEN_INITIALIZING_CUSTOM_RESOURCE, |
| new Object[] { className, aSpecifier.getSourceUrlString() }, |
| e); |
| } catch (Throwable e) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.THROWABLE_WHEN_INITIALIZING_CUSTOM_RESOURCE, |
| new Object[] { className, aSpecifier.getSourceUrlString() }, |
| e); |
| } |
| if (initializeOK) { |
| // success! |
| return resource; |
| } else |
| // failure, for some unknown reason :( |
| { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.ERROR_INITIALIZING_FROM_DESCRIPTOR, new Object[] { |
| className, aSpecifier.getSourceUrlString() }); |
| } |
| } |
| //unsupported ResourceSpecifier type |
| return null; |
| } |
| } |