| /* |
| * 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.Constants; |
| import org.apache.uima.ResourceFactory; |
| import org.apache.uima.collection.CollectionReaderDescription; |
| import org.apache.uima.collection.CollectionReader_ImplBase; |
| import org.apache.uima.collection.base_cpm.BaseCollectionReader; |
| import org.apache.uima.resource.Resource; |
| import org.apache.uima.resource.ResourceInitializationException; |
| import org.apache.uima.resource.ResourceManager; |
| import org.apache.uima.resource.ResourceSpecifier; |
| import org.apache.uima.resource.impl.ResourceManager_impl; |
| import org.apache.uima.resource.metadata.ProcessingResourceMetaData; |
| |
| /** |
| * Specialized Resource Factory for producing CollectionReaders. |
| * |
| */ |
| public class CollectionReaderFactory_impl implements ResourceFactory { |
| |
| /** |
| * @see org.apache.uima.ResourceFactory#produceResource(java.lang.Class, |
| * org.apache.uima.resource.ResourceSpecifier, java.util.Map) |
| */ |
| public Resource produceResource(Class<? extends Resource> aResourceClass, ResourceSpecifier aSpecifier, |
| Map<String, Object> aAdditionalParams) throws ResourceInitializationException { |
| if (aSpecifier instanceof CollectionReaderDescription) { |
| CollectionReaderDescription desc = (CollectionReaderDescription) aSpecifier; |
| |
| //check framework implementation (CollectionReaders only supported in Java) |
| String frameworkImpl = desc.getFrameworkImplementation(); |
| if (frameworkImpl == null || frameworkImpl.length() == 0) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.MISSING_FRAMEWORK_IMPLEMENTATION, |
| new Object[] { aSpecifier.getSourceUrlString() }); |
| } |
| if (!frameworkImpl.startsWith(Constants.JAVA_FRAMEWORK_NAME)) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.UNSUPPORTED_FRAMEWORK_IMPLEMENTATION, |
| new Object[] { desc.getFrameworkImplementation(), aSpecifier.getSourceUrlString() }); |
| } |
| |
| String className = desc.getImplementationName(); |
| |
| if (className == null || className.length() == 0) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.MISSING_IMPLEMENTATION_CLASS_NAME, |
| new Object[] {aSpecifier.getSourceUrlString()}); |
| } |
| |
| // load class using UIMA Extension ClassLoader if there is one |
| |
| ResourceManager resourceManager = null; |
| if (aAdditionalParams != null) { |
| resourceManager = (ResourceManager) aAdditionalParams.get(Resource.PARAM_RESOURCE_MANAGER); |
| } |
| |
| try { |
| Class<?> implClass = ResourceManager_impl.loadUserClassOrThrow(className, resourceManager, aSpecifier); |
| |
| // check to see if this is a subclass of BaseCollectionReader and of aResourceClass |
| if (!BaseCollectionReader.class.isAssignableFrom(implClass)) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.NOT_A_COLLECTION_READER, new Object[] { |
| className, aSpecifier.getSourceUrlString() }); |
| } |
| if (!aResourceClass.isAssignableFrom(implClass)) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.RESOURCE_DOES_NOT_IMPLEMENT_INTERFACE, |
| new Object[] { className, aResourceClass.getName(), |
| aSpecifier.getSourceUrlString() }); |
| } |
| |
| // instantiate this Resource Class |
| Resource resource = (Resource) implClass.newInstance(); |
| // attempt to initialize it |
| if (resource.initialize(aSpecifier, aAdditionalParams)) { |
| // success! |
| // Next: see Jira UIMA-554 |
| (((CollectionReader_ImplBase)resource).getCasManager()).addMetaData( |
| (ProcessingResourceMetaData) resource.getMetaData().clone()); |
| return resource; |
| } else // failure, for some unknown reason :( This isn't likely to happen |
| { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.ERROR_INITIALIZING_FROM_DESCRIPTOR, new Object[] { |
| className, aSpecifier.getSourceUrlString() }); |
| } |
| } catch (IllegalAccessException e) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.COULD_NOT_INSTANTIATE, new Object[] { className, |
| aSpecifier.getSourceUrlString() }, e); |
| } catch (InstantiationException e) { |
| throw new ResourceInitializationException( |
| ResourceInitializationException.COULD_NOT_INSTANTIATE, new Object[] { className, |
| aSpecifier.getSourceUrlString() }, e); |
| } |
| } else // not a CR descriptor |
| { |
| return null; |
| } |
| } |
| |
| } |