/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.cache;
import java.io.Serializable;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.hibernate.EntityMode;
import org.hibernate.engine.TypedValue;
import org.hibernate.impl.FilterImpl;
import org.hibernate.type.Type;
/**
* Allows cached queries to be keyed by enabled filters.
*
* @author Gavin King
*/
public final class FilterKey implements Serializable {
private String filterName;
private Map filterParameters = new HashMap();
public FilterKey(String name, Map params, Map types, EntityMode entityMode) {
filterName = name;
Iterator iter = params.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry me = (Map.Entry) iter.next();
Type type = (Type) types.get( me.getKey() );
filterParameters.put( me.getKey(), new TypedValue( type, me.getValue(), entityMode ) );
}
}
public int hashCode() {
int result = 13;
result = 37 * result + filterName.hashCode();
result = 37 * result + filterParameters.hashCode();
return result;
}
public boolean equals(Object other) {
if ( !(other instanceof FilterKey) ) return false;
FilterKey that = (FilterKey) other;
if ( !that.filterName.equals(filterName) ) return false;
if ( !that.filterParameters.equals(filterParameters) ) return false;
return true;
}
public String toString() {
return "FilterKey[" + filterName + filterParameters + ']';
}
public static Set createFilterKeys(Map enabledFilters, EntityMode entityMode) {
if ( enabledFilters.size()==0 ) return null;
Set result = new HashSet();
Iterator iter = enabledFilters.values().iterator();
while ( iter.hasNext() ) {
FilterImpl filter = (FilterImpl) iter.next();
FilterKey key = new FilterKey(
filter.getName(),
filter.getParameters(),
filter.getFilterDefinition().getParameterTypes(),
entityMode
);
result.add(key);
}
return result;
}
}