com.espertech.esper.client.soda

Class RelationalOpExpression

java.lang.Object

com.espertech.esper.client.soda.ExpressionBase

com.espertech.esper.client.soda.RelationalOpExpression

All Implemented Interfaces:

Expression, Serializable

public class RelationalOpExpression
extends ExpressionBase

Comparison using one of the relational operators (=, !=, <, <=, >, >=, is, is not).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RelationalOpExpression() Ctor.
RelationalOpExpression(Expression left, String operator, Expression right) Ctor.
RelationalOpExpression(String operator) Ctor.

Method Summary

Modifier and Type	Method and Description
String	getOperator() Returns the operator to use.
ExpressionPrecedenceEnum	getPrecedence() Returns precedence.
void	setOperator(String operator) Sets the operator to use.
void	toPrecedenceFreeEPL(StringWriter writer) Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Methods inherited from class com.espertech.esper.client.soda.ExpressionBase

addChild, getChildren, getTreeObjectName, renderAggregation, setChildren, setTreeObjectName, toEPL, toPrecedenceFreeEPL, toPrecedenceFreeEPL

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RelationalOpExpression

public RelationalOpExpression()

Ctor.

RelationalOpExpression

public RelationalOpExpression(String operator)

Ctor.

Parameters:

operator - is the relational operator.

RelationalOpExpression

public RelationalOpExpression(Expression left,
                              String operator,
                              Expression right)

Ctor.

Parameters:

left - provides a value to compare against

operator - is the operator to use

right - provides a value to compare against

Method Detail

getOperator

public String getOperator()

Returns the operator to use.

Returns:

operator.

setOperator

public void setOperator(String operator)

Sets the operator to use.

Parameters:

operator - to use

getPrecedence

public ExpressionPrecedenceEnum getPrecedence()

Description copied from interface: Expression

Returns precedence.

Returns:

precedence

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Description copied from class: ExpressionBase

Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Specified by:

toPrecedenceFreeEPL in class ExpressionBase

Parameters:

writer - is the output to use