com.isotrol.impe3.idx.config.NodeSearcherFactoryBean.java Source code

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Here is the source code for com.isotrol.impe3.idx.config.NodeSearcherFactoryBean.java

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/**
 * This file is part of Port@l
 * Port@l 3.0 - Portal Engine and Management System
 * Copyright (C) 2010  Isotrol, SA.  http://www.isotrol.com
 *
 * Port@l is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Port@l 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Port@l.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.isotrol.impe3.idx.config;

import java.util.Collection;
import java.util.Set;

import net.sf.lucis.core.DirectoryProvider;
import net.sf.lucis.core.Queryable;
import net.sf.lucis.core.support.Queryables;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.search.highlight.Formatter;
import org.springframework.beans.factory.FactoryBean;

import com.google.common.base.Predicates;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import com.isotrol.impe3.nr.api.EmptyNodeRepository;
import com.isotrol.impe3.nr.api.NodeRepository;
import com.isotrol.impe3.nr.core.NodeRepositoryImpl;

/**
 * Node repository searcher factory bean.
 * @author Andres Rodriguez Chamorro
 */
public class NodeSearcherFactoryBean implements FactoryBean<NodeRepository> {
    /** Analyzer. */
    private Analyzer analyzer = null;
    /** Formatter. */
    private Formatter formatter = null;
    /** Directories. */
    private Collection<DirectoryProvider> providers = null;
    /** Managed. */
    private boolean managed = false;
    /** Node repository. */
    private volatile NodeRepository repository = null;

    public NodeSearcherFactoryBean() {
    }

    public final void setAnalyzer(Analyzer analyzer) {
        this.analyzer = analyzer;
    }

    public final void setFormatter(Formatter formatter) {
        this.formatter = formatter;
    }

    public final void setProviders(Collection<DirectoryProvider> providers) {
        this.providers = providers;
    }

    public final void setManaged(boolean managed) {
        this.managed = managed;
    }

    public final boolean isSingleton() {
        return true;
    }

    public final Class<?> getObjectType() {
        return NodeRepository.class;
    }

    public NodeRepository getObject() throws Exception {
        if (repository == null) {
            Queryable q = getQueryable();
            if (q != null) {
                if (analyzer != null && formatter != null) {
                    repository = new NodeRepositoryImpl(q, analyzer, formatter);
                } else if (analyzer != null) {
                    repository = new NodeRepositoryImpl(q, analyzer);
                } else {
                    repository = new NodeRepositoryImpl(q);
                }
            } else {
                repository = new EmptyNodeRepository();
            }
        }
        return repository;
    }

    private Queryable getQueryable() {
        if (providers == null || providers.isEmpty()) {
            return null;
        }
        Set<DirectoryProvider> set = Sets.newHashSet(Iterables.filter(providers, Predicates.notNull()));
        if (set.isEmpty()) {
            return null;
        }
        if (set.size() == 1) {
            DirectoryProvider p = set.iterator().next();
            return managed ? Queryables.managed(p) : Queryables.simple(p);
        }
        return managed ? Queryables.managed(set) : Queryables.multi(set);
    }

}