net.sf.jabref.logic.search.DatabaseSearcher.java Source code

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Here is the source code for net.sf.jabref.logic.search.DatabaseSearcher.java

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/*  Copyright (C) 2003-2015 JabRef contributors.
This program 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 2 of the License, or
(at your option) any later version.
    
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 General Public License for more details.
    
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package net.sf.jabref.logic.search;

import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

import net.sf.jabref.model.database.BibDatabase;
import net.sf.jabref.model.database.BibDatabases;
import net.sf.jabref.model.entry.BibEntry;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * @author Silberer, Zirn
 */
public class DatabaseSearcher {

    private final SearchQuery query;
    private final BibDatabase database;

    private static final Log LOGGER = LogFactory.getLog(DatabaseSearcher.class);

    public DatabaseSearcher(SearchQuery query, BibDatabase database) {
        this.query = Objects.requireNonNull(query);
        this.database = Objects.requireNonNull(database);
    }

    public List<BibEntry> getMatches() {
        LOGGER.debug("Search term: " + query);

        if (!query.isValid()) {
            LOGGER.warn("Search failed: illegal search expression");
            return Collections.emptyList();
        }

        List<BibEntry> matchEntries = database.getEntries().stream().filter(query::isMatch)
                .collect(Collectors.toList());
        return BibDatabases.purgeEmptyEntries(matchEntries);
    }

}