001/*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2012 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * Sonar is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * Sonar is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with Sonar; if not, write to the Free Software
018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019 */
020
021package org.sonar.squid.indexer;
022
023import org.sonar.squid.api.Query;
024import org.sonar.squid.api.SourceCode;
025
026public class QueryByType implements Query {
027
028  private final Class<? extends SourceCode> resourceType;
029
030  public QueryByType(Class<? extends SourceCode> resourceType) {
031    if (resourceType == null) {
032      throw new IllegalStateException("The type of resource can't be null !");
033    }
034    this.resourceType = resourceType;
035  }
036
037  public boolean match(SourceCode unit) {
038    return unit.isType(resourceType);
039  }
040
041  @Override
042  public boolean equals(Object o) {
043    if (this == o) {
044      return true;
045    }
046    if (!(o instanceof QueryByType)) {
047      return false;
048    }
049
050    QueryByType that = (QueryByType) o;
051
052    if (resourceType != null ? !resourceType.equals(that.resourceType) : that.resourceType != null) {
053      return false;
054    }
055
056    return true;
057  }
058
059  @Override
060  public int hashCode() {
061    return resourceType != null ? resourceType.hashCode() : 0;
062  }
063}