////////////////////////////////////////////////////////////////////////////////

 // checkstyle: Checks Java source code for adherence to a set of rules.

 // Copyright (C) 2001-2014  Oliver Burn

 //

 // This library is free software; you can redistribute it and/or

 // modify it under the terms of the GNU Lesser General Public

 // License as published by the Free Software Foundation; either

 // version 2.1 of the License, or (at your option) any later version.

 //

 // This library 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

 // Lesser General Public License for more details.

 //

 // You should have received a copy of the GNU Lesser General Public

 // License along with this library; if not, write to the Free Software

 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 ////////////////////////////////////////////////////////////////////////////////

 package com.puppycrawl.tools.checkstyle.api;

 import com.google.common.collect.Sets;

 import java.util.Set;

 /**

  * A filter set applies filters to AuditEvents.

  * If a filter in the set rejects an AuditEvent, then the

  * AuditEvent is rejected. Otherwise, the AuditEvent is accepted.

  * @author Rick Giles

  */

 public class FilterSet

     implements Filter

 {

     /** filter set */

     private final Set<Filter> mFilters = Sets.newHashSet();

     /**

      * Adds a Filter to the set.

      * @param aFilter the Filter to add.

      */

     public void addFilter(Filter aFilter)

     {

         mFilters.add(aFilter);

     }

     /**

      * Removes filter.

      * @param aFilter filter to remove.

      */

     public void removeFilter(Filter aFilter)

     {

         mFilters.remove(aFilter);

     }

     /**

      * Returns the Filters of the filter set.

      * @return the Filters of the filter set.

      */

     protected Set<Filter> getFilters()

     {

         return mFilters;

     }

     @Override

     public String toString()

     {

         return mFilters.toString();

     }

     @Override

     public int hashCode()

     {

         return mFilters.hashCode();

     }

     @Override

     public boolean equals(Object aObject)

     {

         if (aObject instanceof FilterSet) {

             final FilterSet other = (FilterSet) aObject;

             return this.mFilters.equals(other.mFilters);

         }

         return false;

     }

     /** {@inheritDoc} */

     public boolean accept(AuditEvent aEvent)

     {

         for (Filter filter : mFilters) {

             if (!filter.accept(aEvent)) {

                 return false;

             }

         }

         return true;

     }

     /** Clears the FilterSet. */

     public void clear()

     {

         mFilters.clear();

     }

 }