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

Class ConcatExpression

java.lang.Object

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

com.espertech.esper.common.client.soda.ConcatExpression

All Implemented Interfaces:

Expression, Serializable

public class ConcatExpression
extends ExpressionBase

Concatenation expression that concatenates the result of child expressions to the expression.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ConcatExpression()	Ctor.

Method Summary

Modifier and Type	Method	Description
ConcatExpression	add(Expression expression)	Add an expression to include in the computation.
ConcatExpression	add(Object object)	Add a constant to include in the computation.
ConcatExpression	add(String propertyName)	Add a property to include in the computation.
ExpressionPrecedenceEnum	getPrecedence()	Returns precedence.
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

ConcatExpression

public ConcatExpression()

Ctor.

Method Details

add

public ConcatExpression add(Object object)

Add a constant to include in the computation.

Parameters:

object - constant to add

Returns:

expression

add

public ConcatExpression add(Expression expression)

Add an expression to include in the computation.

Parameters:

expression - to add

Returns:

expression

add

public ConcatExpression add(String propertyName)

Add a property to include in the computation.

Parameters:

propertyName - is the name of the property

Returns:

expression

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