/*
* Copyright (c) 2011 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.util.ArrayList;
import java.util.List;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
/**
* Factory to create ExcludeItemsTrimmers.
*/
public class ExcludeItemsTrimmerFactory implements ActivityQueryListTrimmerFactory
{
/** Null trimmer. */
private final NullTrimmer nullTrimmer = new NullTrimmer();
/**
* {@inheritDoc}
*/
@Override
public ListTrimmer getTrimmer(final JSONObject inRequest, final Long inUserEntityId)
{
try
{
JSONObject obj = inRequest.optJSONObject("exclude");
if (obj != null)
{
JSONArray array = obj.optJSONArray("ids");
if (array != null)
{
List<Long> ids = new ArrayList<Long>();
for (int i = 0; i < array.size(); i++)
{
long id = array.optLong(i, -1);
if (id >= 0)
{
ids.add(id);
}
}
if (!ids.isEmpty())
{
return new ExcludeItemsTrimmer(ids);
}
}
}
}
catch (Exception ex)
{
return nullTrimmer;
}
return nullTrimmer;
}
}