/*
* *************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
* *************************************************************************************
*/
package com.espertech.esper.core.service;
import java.util.Set;
/**
* Service for maintaining references between statement name and event type.
*/
public interface StatementEventTypeRef
{
/**
* Returns true if the event type is listed as in-use by any statement, or false if not
* @param eventTypeName name
* @return indicator whether type is in use
*/
public boolean isInUse(String eventTypeName);
/**
* Returns the set of event types that are use by a given statement name.
* @param statementName name
* @return set of event types or empty set if none found
*/
public Set<String> getTypesForStatementName(String statementName);
/**
* Returns the set of statement names that use a given event type name.
* @param eventTypeName name
* @return set of statements or null if none found
*/
public Set<String> getStatementNamesForType(String eventTypeName);
/**
* Add a reference from a statement name to a set of event types.
* @param statementName name of statement
* @param eventTypesReferenced types
*/
public void addReferences(String statementName, Set<String> eventTypesReferenced);
/**
* Remove all references for a given statement.
* @param statementName statement name
*/
public void removeReferencesStatement(String statementName);
/**
* Remove all references for a given event type.
* @param eventTypeName event type name
*/
public void removeReferencesType(String eventTypeName);
}