/*
***************************************************************************************
* 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;
/**
* Exists-expression for a set of values returned by a lookup.
*/
public class SubqueryQualifiedExpression extends ExpressionBase {
private EPStatementObjectModel model;
private String operator;
private boolean all;
private static final long serialVersionUID = 7461569844284137858L;
/**
* Ctor.
*/
public SubqueryQualifiedExpression() {
}
/**
* Ctor - for use to create an expression tree, without child expression.
*
* @param model is the lookup statement object model
* @param operator the op
* @param all true for ALL, false for ANY
*/
public SubqueryQualifiedExpression(EPStatementObjectModel model, String operator, boolean all) {
this.model = model;
this.operator = operator;
this.all = all;
}
public ExpressionPrecedenceEnum getPrecedence() {
return ExpressionPrecedenceEnum.UNARY;
}
public void toPrecedenceFreeEPL(StringWriter writer) {
getChildren().get(0).toEPL(writer, ExpressionPrecedenceEnum.MINIMUM);
writer.write(' ');
writer.write(operator);
if (all) {
writer.write(" all (");
} else {
writer.write(" any (");
}
writer.write(model.toEPL());
writer.write(')');
}
/**
* Returns the lookup statement object model.
*
* @return lookup model
*/
public EPStatementObjectModel getModel() {
return model;
}
/**
* Sets the lookup statement object model.
*
* @param model is the lookup model to set
*/
public void setModel(EPStatementObjectModel model) {
this.model = model;
}
/**
* Returns the operator.
*
* @return operator
*/
public String getOperator() {
return operator;
}
/**
* Sets the operator.
*
* @param operator op
*/
public void setOperator(String operator) {
this.operator = operator;
}
/**
* Returns true for ALL, false for ANY.
*
* @return all/any flag
*/
public boolean isAll() {
return all;
}
/**
* Set to true for ALL, false for ANY.
*
* @param all true for ALL
*/
public void setAll(boolean all) {
this.all = all;
}
}