/*
* Copyright (c) 2010 Lockheed Martin Corporation
*
* 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.eurekastreams.server.action.execution.stream;
import java.io.Serializable;
import java.util.List;
import org.eurekastreams.commons.actions.ExecutionStrategy;
import org.eurekastreams.commons.actions.context.PrincipalActionContext;
import org.eurekastreams.commons.exceptions.ExecutionException;
import org.eurekastreams.server.domain.stream.StreamFilter;
import org.eurekastreams.server.persistence.mappers.DomainMapper;
import org.eurekastreams.server.service.actions.response.GetCurrentUserStreamFiltersResponse;
/**
* Get the streams for the current user.
*/
public class GetCurrentUsersStreamsExecution implements ExecutionStrategy<PrincipalActionContext>
{
/**
* Streams mapper.
*/
private DomainMapper<Long, List<StreamFilter>> getUserStreamsMapper;
/**
* Constructor.
*
* @param inGetUserStreamsMapper
* stream mapper.
*/
public GetCurrentUsersStreamsExecution(final DomainMapper<Long, List<StreamFilter>> inGetUserStreamsMapper)
{
getUserStreamsMapper = inGetUserStreamsMapper;
}
/**
* Execute the action.
*
* @param inActionContext
* the action context.
* @return the list of stream filters for the current user.
* @exception ExecutionException
* not expected.
*/
public Serializable execute(final PrincipalActionContext inActionContext) throws ExecutionException
{
final List<StreamFilter> streams = getUserStreamsMapper.execute(inActionContext.getPrincipal().getId());
return new GetCurrentUserStreamFiltersResponse(streams.size(), streams);
}
}