94 lines
2.8 KiB
Java
94 lines
2.8 KiB
Java
/*
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This file is part of Subsonic.
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Subsonic is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Subsonic is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2009 (C) Sindre Mehus
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*/
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package net.nullsum.audinaut.domain;
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import java.util.regex.Pattern;
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/**
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* The criteria for a music search.
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*
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* @author Sindre Mehus
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*/
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public class SearchCritera {
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private final String query;
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private final int artistCount;
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private final int albumCount;
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private final int songCount;
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private Pattern pattern;
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public SearchCritera(String query, int artistCount, int albumCount, int songCount) {
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this.query = query;
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this.artistCount = artistCount;
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this.albumCount = albumCount;
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this.songCount = songCount;
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}
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public String getQuery() {
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return query;
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}
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public int getArtistCount() {
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return artistCount;
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}
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public int getAlbumCount() {
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return albumCount;
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}
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public int getSongCount() {
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return songCount;
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}
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/**
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* Returns and caches a pattern instance that can be used to check if a
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* string matches the query.
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*/
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public Pattern getPattern() {
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// If the pattern wasn't already cached, create a new regular expression
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// from the search string :
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// * Surround the search string with ".*" (match anything)
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// * Replace spaces and wildcard '*' characters with ".*"
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// * All other characters are properly quoted
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if (this.pattern == null) {
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StringBuilder regex = new StringBuilder(".*");
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StringBuilder currentPart = new StringBuilder();
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for (int i = 0; i < query.length(); i++) {
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char c = query.charAt(i);
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if (c == '*' || c == ' ') {
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regex.append(Pattern.quote(currentPart.toString()));
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regex.append(".*");
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currentPart = new StringBuilder();
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} else {
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currentPart.append(c);
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}
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}
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if (currentPart.length() > 0) {
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regex.append(Pattern.quote(currentPart.toString()));
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}
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regex.append(".*");
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this.pattern = Pattern.compile(regex.toString(), Pattern.CASE_INSENSITIVE);
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}
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return this.pattern;
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}
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}
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