Package com.espertech.esper.common.client.soda

Class RegExpExpression

java.lang.Object

com.espertech.esper.common.client.soda.ExpressionBase

com.espertech.esper.common.client.soda.RegExpExpression

All Implemented Interfaces:

Expression, Serializable

public class RegExpExpression
extends ExpressionBase

Regular expression evaluates a "regexp" regular expression.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
RegExpExpression()	Ctor - for use to create an expression tree, without child expression.
RegExpExpression(boolean isNot)	Ctor - for use to create an expression tree, without child expression.
RegExpExpression(Expression left, Expression right)	Ctor.
RegExpExpression(Expression left, Expression right, boolean isNot)	Ctor.
RegExpExpression(Expression left, Expression right, Expression escape)	Ctor.
RegExpExpression(Expression left, Expression right, Expression escape, boolean isNot)	Ctor.

Method Summary

Modifier and Type	Method	Description
ExpressionPrecedenceEnum	getPrecedence()	Returns precedence.
boolean	isNot()	Returns true if negated.
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.common.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 Details

RegExpExpression

public RegExpExpression(boolean isNot)

Ctor - for use to create an expression tree, without child expression.

Parameters:

isNot - true for negated regex

RegExpExpression

public RegExpExpression(Expression left,
 Expression right,
 boolean isNot)

Ctor.

Parameters:

left - provides values to match against regexp string

right - provides the regexp string

isNot - true for negated regex

RegExpExpression

public RegExpExpression(Expression left,
 Expression right,
 Expression escape,
 boolean isNot)

Ctor.

Parameters:

left - provides values to match against regexp string

right - provides the regexp string

escape - provides the escape character

isNot - true for negated regex

RegExpExpression

public RegExpExpression()

Ctor - for use to create an expression tree, without child expression.

RegExpExpression

public RegExpExpression(Expression left,
 Expression right)

Ctor.

Parameters:

left - provides values to match against regexp string

right - provides the regexp string

RegExpExpression

public RegExpExpression(Expression left,
 Expression right,
 Expression escape)

Ctor.

Parameters:

left - provides values to match against regexp string

right - provides the regexp string

escape - provides the escape character

Method Details

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

isNot

public boolean isNot()

Returns true if negated.

Returns:

indicator whether negated