org.hibernate.cache.spi.FilterKey Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008-2011, Red Hat Inc. 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 Inc.
*
* 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
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*/
package org.hibernate.cache.spi;
import java.io.Serializable;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.hibernate.Filter;
import org.hibernate.engine.spi.TypedValue;
import org.hibernate.internal.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) {
filterName = name;
for ( Map.Entry paramEntry : params.entrySet() ) {
Type type = types.get( paramEntry.getKey() );
filterParameters.put( paramEntry.getKey(), new TypedValue( type, paramEntry.getValue() ) );
}
}
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) {
if ( enabledFilters.size()==0 ) {
return null;
}
Set result = new HashSet();
for ( Filter filter : enabledFilters.values() ) {
FilterKey key = new FilterKey(
filter.getName(),
( (FilterImpl) filter ).getParameters(),
filter.getFilterDefinition().getParameterTypes()
);
result.add( key );
}
return result;
}
}