com.espertech.esper.client.soda

Class MinRowExpression

java.lang.Object

com.espertech.esper.client.soda.ExpressionBase

com.espertech.esper.client.soda.MinRowExpression

All Implemented Interfaces:

Expression, Serializable

public class MinRowExpression
extends ExpressionBase

Minimum-value per-row expression (not aggregating) determines the minimum value among a set of values.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MinRowExpression() Ctor - for use to create an expression tree, without child expression.
MinRowExpression(Expression exprOne, Expression exprTwo, Expression... moreExpressions) Ctor.
MinRowExpression(String propertyOne, String propertyTwo, String[] moreProperties) Ctor.

Method Summary

Modifier and Type	Method and Description
MinRowExpression	add(Expression expression) Add an expression to include in the computation.
MinRowExpression	add(Object object) Add a constant to include in the computation.
MinRowExpression	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.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

MinRowExpression

public MinRowExpression()

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

Use add methods to add child expressions to acts upon.

MinRowExpression

public MinRowExpression(String propertyOne,
                        String propertyTwo,
                        String[] moreProperties)

Ctor.

Parameters:

propertyOne - the name of the property providing a value to determine the minimum of

propertyTwo - the name of the property providing a value to determine the minimum of

moreProperties - optional additional properties to consider

MinRowExpression

public MinRowExpression(Expression exprOne,
                        Expression exprTwo,
                        Expression... moreExpressions)

Ctor.

Parameters:

exprOne - provides a value to determine the maximum of

exprTwo - provides a value to determine the maximum of

moreExpressions - optional additional values to consider

Method Detail

add

public MinRowExpression add(Object object)

Add a constant to include in the computation.

Parameters:

object - constant to add

Returns:

expression

add

public MinRowExpression add(Expression expression)

Add an expression to include in the computation.

Parameters:

expression - to add

Returns:

expression

add

public MinRowExpression 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