//$Id: FilterKey.java 8754 2005-12-05 23:36:59Z steveebersole $
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;
}
}