taverna-file-impl/src/main/java/org/apache/taverna/workbench/file/impl/DataflowFromDataflowPersistenceHandler.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.workbench.file.impl;

import java.util.Arrays;
import java.util.Date;
import java.util.List;

import org.apache.taverna.workbench.file.AbstractDataflowPersistenceHandler;
import org.apache.taverna.workbench.file.DataflowInfo;
import org.apache.taverna.workbench.file.DataflowPersistenceHandler;
import org.apache.taverna.workbench.file.FileType;
import org.apache.taverna.workbench.file.exceptions.OpenException;
import org.apache.taverna.scufl2.api.container.WorkflowBundle;
import org.apache.taverna.scufl2.api.core.Workflow;

/**
 * @author alanrw
 */
public class DataflowFromDataflowPersistenceHandler extends
		AbstractDataflowPersistenceHandler implements
		DataflowPersistenceHandler {
	private static final WorkflowBundleFileType WORKFLOW_BUNDLE_FILE_TYPE = new WorkflowBundleFileType();

	@Override
	public DataflowInfo openDataflow(FileType fileType, Object source)
			throws OpenException {
		if (!getOpenFileTypes().contains(fileType))
			throw new IllegalArgumentException("Unsupported file type "
					+ fileType);

		WorkflowBundle workflowBundle = (WorkflowBundle) source;
		Date lastModified = null;
		Object canonicalSource = null;
		return new DataflowInfo(WORKFLOW_BUNDLE_FILE_TYPE, canonicalSource,
				workflowBundle, lastModified);
	}

	@Override
	public List<FileType> getOpenFileTypes() {
		return Arrays.<FileType> asList(WORKFLOW_BUNDLE_FILE_TYPE);
	}

	@Override
	public List<Class<?>> getOpenSourceTypes() {
		return Arrays.<Class<?>> asList(Workflow.class);
	}
}