com.espertech.esper.client.soda

Class InstanceOfExpression

java.lang.Object

com.espertech.esper.client.soda.ExpressionBase

com.espertech.esper.client.soda.InstanceOfExpression

All Implemented Interfaces:

Expression, Serializable

public class InstanceOfExpression
extends ExpressionBase

Instance-of expression checks if an expression returns a certain type.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
InstanceOfExpression() Ctor.
InstanceOfExpression(Expression expressionToCheck, String typeName, String... moreTypes) Ctor.
InstanceOfExpression(String[] typeNames) Ctor - for use to create an expression tree, without child expression.

Method Summary

Modifier and Type	Method and Description
ExpressionPrecedenceEnum	getPrecedence() Returns precedence.
String[]	getTypeNames() Returns the types to compare to.
void	setTypeNames(String[] typeNames) Sets the types to compare to.
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

InstanceOfExpression

public InstanceOfExpression()

Ctor.

InstanceOfExpression

public InstanceOfExpression(String[] typeNames)

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

Parameters:

typeNames - is the fully-qualified class names or Java primitive type names or "string"

InstanceOfExpression

public InstanceOfExpression(Expression expressionToCheck,
                            String typeName,
                            String... moreTypes)

Ctor.

Parameters:

expressionToCheck - provides values to check the type of

typeName - is one fully-qualified class names or Java primitive type names or "string"

moreTypes - is additional optional fully-qualified class names or Java primitive type names or "string"

Method Detail

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

getTypeNames

public String[] getTypeNames()

Returns the types to compare to.

Returns:

list of types to compare to

setTypeNames

public void setTypeNames(String[] typeNames)

Sets the types to compare to.

Parameters:

typeNames - list of types to compare to