edu.ucsc.twitter.ResultPackage.java Source code

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Here is the source code for edu.ucsc.twitter.ResultPackage.java

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/*
 * Copyright (C) 2011 Huascar A. Sanchez.
 *
 * 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 edu.ucsc.twitter;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import java.util.List;
import java.util.Map;

/**
 * ...
 *
 * @author hsanchez@cs.ucsc.edu (Huascar A. Sanchez)
 */
public class ResultPackage {
    private final Map<Kind, List<Object>> tweets;

    private ResultPackage(Map<Kind, List<Object>> tweets) {
        this.tweets = tweets;
    }

    public static ResultPackage emptyTweetsPackage() {
        return emptyPackage(Kind.TWEET);
    }

    public static ResultPackage emptyPackage(Kind kind) {
        final Map<Kind, List<Object>> seed = Maps.newEnumMap(Kind.class);
        seed.put(kind, Lists.<Object>newArrayList());
        return new ResultPackage(seed);
    }

    public ResultPackage putAllTweetResults(List<?> findings) {
        return putAll(Kind.TWEET, findings);
    }

    public List<Object> get(Kind kind) {
        return ImmutableList.copyOf(tweets.get(kind));
    }

    public ResultPackage putAll(Kind kind, List<?> findings) {
        for (Object each : findings) {
            put(kind, each);
        }
        return this;
    }

    public ResultPackage put(Kind kind, Object context) {
        final Object castObject = kind.cast(Preconditions.checkNotNull(context));
        if (!tweets.get(kind).contains(castObject)) {
            tweets.get(kind).add(castObject);
        }

        return this;
    }

    public enum Kind {
        TWEET(TweetPackage.class);
        private final Class<?> cast;

        Kind(Class<?> cast) {
            this.cast = cast;
        }

        Object cast(Object that) {
            return cast.cast(that);
        }
    }
}