/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* 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;
/**
* Context descriptor for categories.
*/
public class ContextDescriptorCategoryItem implements ContextDescriptor {
private static final long serialVersionUID = -6914400028529675775L;
private Expression expression;
private String label;
/**
* Ctor.
*/
public ContextDescriptorCategoryItem() {
}
/**
* Ctor.
*
* @param expression category expression
* @param label category label
*/
public ContextDescriptorCategoryItem(Expression expression, String label) {
this.expression = expression;
this.label = label;
}
/**
* Returns the category expression.
*
* @return expression
*/
public Expression getExpression() {
return expression;
}
/**
* Sets the category expression.
*
* @param expression to set
*/
public void setExpression(Expression expression) {
this.expression = expression;
}
/**
* Returns the category label
*
* @return category label
*/
public String getLabel() {
return label;
}
/**
* Sets the category label
*
* @param label category label
*/
public void setLabel(String label) {
this.label = label;
}
public void toEPL(StringWriter writer, EPStatementFormatter formatter) {
writer.append("group ");
expression.toEPL(writer, ExpressionPrecedenceEnum.MINIMUM);
writer.append(" as ");
writer.append(label);
}
}