/**************************************************************************************
* 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.epl.expression;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.core.service.ExpressionResultCacheService;
import com.espertech.esper.epl.script.AgentInstanceScriptContext;
import com.espertech.esper.core.service.StatementAgentInstanceLock;
import com.espertech.esper.schedule.TimeProvider;
/**
* Represents a minimal enginel-level context for expression evaluation, not allowing for agents instances and result cache.
*/
public class ExprEvaluatorContextTimeOnly implements ExprEvaluatorContext
{
private final TimeProvider timeProvider;
private final ExpressionResultCacheService expressionResultCacheService;
public ExprEvaluatorContextTimeOnly(TimeProvider timeProvider) {
this.timeProvider = timeProvider;
this.expressionResultCacheService = new ExpressionResultCacheService();
}
/**
* Returns the time provider.
* @return time provider
*/
public TimeProvider getTimeProvider() {
return timeProvider;
}
public ExpressionResultCacheService getExpressionResultCacheService() {
return expressionResultCacheService;
}
public int getAgentInstanceId() {
return -1;
}
public EventBean getContextProperties() {
return null;
}
public AgentInstanceScriptContext getAgentInstanceScriptContext() {
return null;
}
public String getStatementName() {
return null;
}
public String getEngineURI() {
return null;
}
public String getStatementId() {
return null;
}
public StatementAgentInstanceLock getAgentInstanceLock() {
return null;
}
}