taverna-activity-palette-api/src/main/java/org/apache/taverna/servicedescriptions/AbstractConfigurableServiceProvider.java

/*
* 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.taverna.servicedescriptions;

import org.apache.taverna.scufl2.api.configurations.Configuration;

public abstract class AbstractConfigurableServiceProvider extends
		IdentifiedObject implements ConfigurableServiceProvider {
	protected Configuration serviceProviderConfig;

	/**
	 * Construct configurable service provider.
	 * 
	 * @param configTemplate
	 *            Template configuration
	 */
	public AbstractConfigurableServiceProvider(Configuration configTemplate) {
		if (configTemplate == null)
			throw new NullPointerException("Default config can't be null");
		serviceProviderConfig = configTemplate;
	}

	/**
	 * Package access constructor - only used with {@link #clone()} - otherwise
	 * use {@link #AbstractConfigurableServiceProvider(Object)}
	 */
	AbstractConfigurableServiceProvider() {
	}

	@Override
	public AbstractConfigurableServiceProvider clone() {
		AbstractConfigurableServiceProvider provider = (AbstractConfigurableServiceProvider) newInstance();
		Configuration configuration = getConfiguration();
		if (configuration != null)
			provider.configure(configuration);
		return provider;
	}

	@Override
	public synchronized void configure(Configuration conf) {
		if (conf == null)
			throw new IllegalArgumentException("Config can't be null");
		this.serviceProviderConfig = conf;
	}

	@Override
	public Configuration getConfiguration() {
		return serviceProviderConfig;
	}

	@Override
	public String toString() {
		return getName() + " " + getConfiguration();
	}
}