MockFederationStrategy.java

/**
 * Copyright (c) Codice Foundation
 * <p/>
 * This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 * <p/>
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details. A copy of the GNU Lesser General Public License
 * is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */
package ddf.catalog.impl;

import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import ddf.catalog.data.Result;
import ddf.catalog.federation.FederationException;
import ddf.catalog.federation.FederationStrategy;
import ddf.catalog.operation.QueryRequest;
import ddf.catalog.operation.QueryResponse;
import ddf.catalog.operation.impl.QueryResponseImpl;
import ddf.catalog.source.Source;
import ddf.catalog.source.UnsupportedQueryException;

public class MockFederationStrategy implements FederationStrategy {

    private static final Logger LOGGER = LoggerFactory.getLogger(MockFederationStrategy.class);

    @Override
    public QueryResponse federate(List<Source> sources, QueryRequest query)
            throws FederationException {
        LOGGER.debug("entry");
        QueryResponseImpl resp = new QueryResponseImpl(query);

        for (Source src : sources) {
            try {
                resp.addResults(src.query(query).getResults(), false);
            } catch (UnsupportedQueryException e) {
                LOGGER.error("Doh!", e);
            }
        }
        resp.closeResultQueue();
        List<Result> results = resp.getResults();
        resp.setHits(results.size());
        LOGGER.debug("exit");
        return resp;
    }

}