/**************************************************************************************
* 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.client.soda;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
/**
* Static method call consists of a class name and method name.
*/
public class StaticMethodExpression extends ExpressionBase
{
private static final long serialVersionUID = -8876482797010708113L;
private String className;
private List<DotExpressionItem> chain = new ArrayList<DotExpressionItem>();
/**
* Ctor.
* @param className class name providing the static method
* @param method method name
* @param parameters an optiona array of parameters
*/
public StaticMethodExpression(String className, String method, Object[] parameters)
{
this.className = className;
List<Expression> parameterList = new ArrayList<Expression>();
for (int i = 0; i < parameters.length; i++)
{
if (parameters[i] instanceof Expression)
{
parameterList.add((Expression)parameters[i]);
}
else
{
parameterList.add(new ConstantExpression(parameters[i]));
}
}
chain.add(new DotExpressionItem(method, parameterList, false));
}
/**
* Returns the chain of method invocations, each pair a method name and list of parameter expressions
* @return method chain
*/
public List<DotExpressionItem> getChain()
{
return chain;
}
/**
* Sets the chain of method invocations, each pair a method name and list of parameter expressions
* @param chain method chain
*/
public void setChain(List<DotExpressionItem> chain) {
this.chain = chain;
}
/**
* Ctor.
* @param className class name providing the static method
* @param chain method chain
*/
public StaticMethodExpression(String className, List<DotExpressionItem> chain)
{
this.className = className;
this.chain = chain;
}
public ExpressionPrecedenceEnum getPrecedence()
{
return ExpressionPrecedenceEnum.UNARY;
}
public void toPrecedenceFreeEPL(StringWriter writer)
{
writer.write(className);
DotExpressionItem.render(chain, writer, true);
}
/**
* Returns the class name.
* @return class name
*/
public String getClassName()
{
return className;
}
/**
* Sets the class name.
* @param className class name
*/
public void setClassName(String className)
{
this.className = className;
}
}