// Copyright 2009 Google Inc. // // Licensed 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 com.google.enterprise.connector.spi; import java.util.Map; /** * Simple implementation of the {@link ConnectorFactory} interface. * Connector developers may want to use this to implement unit tests. * * @since 2.4 */ public class SimpleConnectorFactory implements ConnectorFactory { private final Connector instance; /** * Constructs a factory without a connector instance. A subclass * that calls this constructor should also override the {@link * #makeConnector makeConnector} method. */ protected SimpleConnectorFactory() { this(null); } /** * Constructs a factory that returns the given connector instance. * * @param instance the connector to return from {@link #makeConnector * makeConnector} */ public SimpleConnectorFactory(Connector instance) { this.instance = instance; } /** * This implementation returns the connector instance passed to the * constructor. * * @return the connector instance passed to the constructor * @throws RepositoryException if a subclass overrides this method and throws * RepositoryException, or if the connector instance is {@code null} */ @Override public Connector makeConnector(Map<String, String> config) throws RepositoryException { if (instance == null) { throw new RepositoryException("No connector instance"); } return instance; } }