IsMappingSupported.java

// BridgeDb,
// An abstraction layer for identifier mapping services, both local and online.
// Copyright 2006-2009 BridgeDb developers
//
// 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 org.bridgedb.server;

import org.bridgedb.DataSource;
import org.bridgedb.IDMapper;
import org.restlet.data.Status;
import org.restlet.resource.Get;
import org.restlet.resource.ResourceException;

public class IsMappingSupported extends IDMapperResource {
	DataSource srcDs;
	DataSource destDs;
	
	protected void doInit() throws ResourceException {
		super.doInit();
		try {
			//Required parameters
			String dsName = urlDecode((String)getRequest().getAttributes().get(IDMapperService.PAR_SOURCE_SYSTEM));
			srcDs = parseDataSource(dsName);
			if(srcDs == null) {
				throw new IllegalArgumentException("Unknown datasource: " + dsName);
			}
			dsName = urlDecode((String)getRequest().getAttributes().get(IDMapperService.PAR_DEST_SYSTEM));
			destDs = parseDataSource(dsName);
			if(destDs == null) {
				throw new IllegalArgumentException("Unknown datasource: " + dsName);
			}
			
		} catch(Exception e) {
			throw new ResourceException(e);
		}
	}

	@Get
	public String isMappingSupported() {
		try {
			
			IDMapper m = getIDMappers();
			boolean supported = m.getCapabilities().isMappingSupported(srcDs, destDs);
			return "" + supported;
		} catch(Exception e) {
			e.printStackTrace();
			setStatus(Status.SERVER_ERROR_INTERNAL);
			return e.getMessage();
		}
	}
}