ttf.util.AppContext.java Source code

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Here is the source code for ttf.util.AppContext.java

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/*
 * Copyright 2010 Mihai Paraschiv
 * 
 * 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 ttf.util;

import javax.sql.DataSource;

import org.apache.commons.configuration.Configuration;
import org.apache.commons.dbcp.BasicDataSource;

import ttf.analysis.computation.SimilarityComputer;
import ttf.analysis.context.ContextFactory;
import ttf.analysis.tfidf.TfIdf;
import ttf.model.article.ArticleFactory;
import ttf.model.article.BasicArticleFactory;
import ttf.model.topic.BasicTopicFactory;
import ttf.model.topic.TopicFactory;
import ttf.persistence.ModelStore;
import ttf.persistence.sql.SQLStore;
import ttf.util.alchemyapi.EntityDetector;
import ttf.util.tfidfapi.TfIdfDetector;

import com.orchestr8.api.AlchemyAPI;

/**
 * This class should be used only at the start of the application.
 * 
 * @author Mihai Paraschiv
 */
public class AppContext {
    private final DataSource dataSource;
    private final ArticleFactory articleFactory;
    private final TopicFactory topicFactory;
    private final ModelStore modelStore;
    private final ContextFactory contextFactory;

    private AppContext(Configuration c) {
        // data source
        BasicDataSource bds = new BasicDataSource();
        bds.setDriverClassName(c.getString("db.driverClassName"));
        bds.setUsername(c.getString("db.username"));
        bds.setPassword(c.getString("db.password"));
        bds.setUrl(c.getString("db.uri"));
        dataSource = bds;

        // model handlers
        articleFactory = new BasicArticleFactory();
        topicFactory = new BasicTopicFactory();
        modelStore = new SQLStore(dataSource, articleFactory, topicFactory);

        // processing
        String key = c.getString("alchemy.key");
        AlchemyAPI alchemyAPI = AlchemyAPI.GetInstanceFromString(key);
        EntityDetector entityDetector = new EntityDetector(alchemyAPI);
        TfIdfDetector tfIdfDetector = new TfIdfDetector(new TfIdf());
        SimilarityComputer similarityComputer = new SimilarityComputer();

        contextFactory = new ContextFactory( //
                articleFactory, topicFactory, //
                modelStore, //
                alchemyAPI, entityDetector, tfIdfDetector, similarityComputer);
    }

    public static AppContext build(Configuration c) {
        return new AppContext(c);
    }

    public DataSource getDataSource() {
        return dataSource;
    }

    public ArticleFactory getArticleFactory() {
        return articleFactory;
    }

    public TopicFactory getTopicFactory() {
        return topicFactory;
    }

    public ModelStore getModelStore() {
        return modelStore;
    }

    public ContextFactory getContextFactory() {
        return contextFactory;
    }
}