| /* |
| * 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.collection; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| |
| import org.apache.uima.UIMAFramework; |
| import org.apache.uima.cas.TypeSystem; |
| import org.apache.uima.resource.ConfigurableResource_ImplBase; |
| import org.apache.uima.resource.ResourceConfigurationException; |
| import org.apache.uima.resource.ResourceCreationSpecifier; |
| import org.apache.uima.resource.ResourceInitializationException; |
| import org.apache.uima.resource.ResourceSpecifier; |
| import org.apache.uima.resource.metadata.ProcessingResourceMetaData; |
| import org.apache.uima.util.Level; |
| |
| /** |
| * Base class for Collection Readers, which developers should extend with their own Collection |
| * Reader implementation classes. |
| * |
| * |
| */ |
| |
| public abstract class CollectionReader_ImplBase extends ConfigurableResource_ImplBase implements |
| CollectionReader { |
| /** |
| * @deprecated |
| */ |
| @Deprecated |
| private CasInitializer mCasInitializer; |
| |
| /** |
| * current class |
| */ |
| private static final Class<CollectionReader_ImplBase> CLASS_NAME = CollectionReader_ImplBase.class; |
| |
| /** |
| * Called by the framework to initialize this Collection Reader. Subclasses should generally NOT |
| * override this method; instead they should override the zero-argument {@link #initialize()} |
| * method and access metadata via the {@link #getProcessingResourceMetaData()} method. This method |
| * is non-final only for legacy reasons. |
| * <p> |
| * |
| * @see org.apache.uima.resource.Resource#initialize(org.apache.uima.resource.ResourceSpecifier, |
| * java.util.Map) |
| */ |
| public boolean initialize(ResourceSpecifier aSpecifier, Map<String, Object> aAdditionalParams) |
| throws ResourceInitializationException { |
| if (aSpecifier instanceof ResourceCreationSpecifier) { |
| // do framework intitialiation |
| if (super.initialize(aSpecifier, aAdditionalParams)) { |
| // do user initialization |
| initialize(); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * This method is called during initialization, and does nothing by default. Subclasses should |
| * override it to perform one-time startup logic. |
| * |
| * @throws ResourceInitializationException |
| * if a failure occurs during initialization. |
| */ |
| public void initialize() throws ResourceInitializationException { |
| // no default behavior |
| } |
| |
| /** |
| * Default implementation of destroy, which calls {@link #close()}. If close throws an |
| * IOException, it will be logged. |
| * |
| * @see org.apache.uima.resource.Resource#destroy() |
| */ |
| public void destroy() { |
| try { |
| close(); |
| } catch (IOException e) { |
| UIMAFramework.getLogger(CLASS_NAME).log(Level.SEVERE, "", e); |
| } |
| } |
| |
| /** |
| * Default implementation of typeSystemInit, which calls the CAS Initializer's typeSystemInit |
| * method if a CAS Initializer is present. |
| * |
| * @see org.apache.uima.collection.CollectionReader#typeSystemInit(org.apache.uima.cas.TypeSystem) |
| */ |
| public void typeSystemInit(TypeSystem aTypeSystem) throws ResourceInitializationException { |
| if (getCasInitializer() != null) { |
| getCasInitializer().typeSystemInit(aTypeSystem); |
| } |
| } |
| |
| /** |
| * Gets the metadata for this CollectionReader, which was extracted from the descriptor during |
| * initialization. |
| * |
| * @see org.apache.uima.collection.CollectionReader#getProcessingResourceMetaData() |
| */ |
| public ProcessingResourceMetaData getProcessingResourceMetaData() { |
| return (ProcessingResourceMetaData) getMetaData(); |
| } |
| |
| /** |
| * Returns false. |
| * |
| * @see org.apache.uima.collection.CollectionReader#isConsuming() |
| */ |
| public boolean isConsuming() { |
| return false; |
| } |
| |
| /** |
| * Gets the CAS initializer associated with this CollectionReader, if one was supplied via |
| * {@link #setCasInitializer(CasInitializer)}. |
| * |
| * @see org.apache.uima.collection.CollectionReader#getCasInitializer() |
| * |
| * @deprecated As of v2.0 CAS Initializers are deprecated. |
| */ |
| @Deprecated |
| public CasInitializer getCasInitializer() { |
| return mCasInitializer; |
| } |
| |
| /** |
| * Stores the CAS initializer in a private field and provides access to it via |
| * {@link #getCasInitializer()}. |
| * |
| * @see org.apache.uima.collection.CollectionReader#setCasInitializer(org.apache.uima.collection.CasInitializer) |
| * |
| * @deprecated As of v2.0 CAS Initializers are deprecated. |
| */ |
| @Deprecated |
| public void setCasInitializer(CasInitializer aCasInitializer) { |
| mCasInitializer = aCasInitializer; |
| } |
| |
| /** |
| * Notifies this Collection Reader that its configuration parameter settings have been changed. By |
| * default this method just calls {@link #destroy()} followed by {@link #initialize()}. |
| * Collection Readers that have expensive initialization that does not need to be redone whenever |
| * configuration parameters change may wish to override this method to provide a more efficient |
| * implementation. |
| * |
| * @see org.apache.uima.resource.ConfigurableResource_ImplBase#reconfigure() |
| */ |
| public void reconfigure() throws ResourceConfigurationException { |
| super.reconfigure(); |
| destroy(); |
| try { |
| initialize(); |
| } catch (ResourceInitializationException e) { |
| throw new ResourceConfigurationException(e); |
| } |
| } |
| } |