Package com.singularsys.extensions.stream

Class StreamAssign

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.extensions.stream.StreamAssign

All Implemented Interfaces:

CallbackEvaluationI, JepComponent, PostfixMathCommandI, Serializable

public class StreamAssign
extends PostfixMathCommand
implements CallbackEvaluationI, JepComponent

An assignment operator that converts rhs streams values to Vector<Object> using the List.

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, description, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor	Description
StreamAssign()

Method Summary

Modifier and Type	Method	Description
Object	evaluate(Node node, Evaluator pv)	For assignment set the value of the variable on the lhs to value returned by evaluating the right-hand side.
JepComponent	getLightWeightInstance()	Gets a light-weight instance suitable for using in multiple threads.
void	init(Jep jep)	Initialize the component.

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, asType, checkNumberOfParameters, getDescription, getDescription, getDescriptionWithType, getName, getNumberOfParameters, run, setCurNumberOfParameters, setDescription, setName, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Details

StreamAssign

public StreamAssign()

Method Details

evaluate

public Object evaluate(Node node,
 Evaluator pv)
                throws EvaluationException

For assignment set the value of the variable on the lhs to value returned by evaluating the right-hand side.

Specified by:

evaluate in interface CallbackEvaluationI

Parameters:

node - The current node

pv - The visitor, can be used evaluate the children

Returns:

the value after evaluation. This value will be passed to other functions higher up the node tree. The value can be any type including Double or Vector<Object>

Throws:

EvaluationException - if the calculation cannot be performed

See Also:

• Evaluator

init

public void init(Jep jep)

Description copied from interface: JepComponent

Initialize the component. This method is called whenever a component is added to Jep. Hence, it allows components to keep track of the other components they may rely on.

Specified by:

init in interface JepComponent

Parameters:

jep - the current Jep instance

getLightWeightInstance

public JepComponent getLightWeightInstance()

Description copied from interface: JepComponent

Gets a light-weight instance suitable for using in multiple threads.

Specified by:

getLightWeightInstance in interface JepComponent

Returns:

either a new instance, null or 'this'.