org.wso2.siddhi.extension.math

Class SignFunctionExtension

java.lang.Object

org.wso2.siddhi.core.executor.function.FunctionExecutor

org.wso2.siddhi.extension.math.SignFunctionExtension

All Implemented Interfaces:

org.wso2.siddhi.core.executor.ExpressionExecutor, org.wso2.siddhi.core.util.extension.holder.EternalReferencedHolder, org.wso2.siddhi.core.util.snapshot.Snapshotable

public class SignFunctionExtension
extends org.wso2.siddhi.core.executor.function.FunctionExecutor

signum(a); Returns the sign of a as '1.0' (if a is positive) or '-1.0' (if a is negative), '0.0' otherwise. Accept Type(s) :DOUBLE/INT/FLOAT/LONG Return Type(s): INT Returning an INT rather than a DOUBLE because an INT is *sufficient* to represent -1,0 and 1

Field Summary

Fields inherited from class org.wso2.siddhi.core.executor.function.FunctionExecutor

attributeExpressionExecutors, elementId, executionPlanContext

Constructor Summary

Constructors

Constructor and Description
SignFunctionExtension()

Method Summary

Methods

Modifier and Type	Method and Description
Object[]	currentState()
protected Object	execute(Object data)
protected Object	execute(Object[] data)
org.wso2.siddhi.query.api.definition.Attribute.Type	getReturnType()
protected void	init(org.wso2.siddhi.core.executor.ExpressionExecutor[] attributeExpressionExecutors, org.wso2.siddhi.core.config.ExecutionPlanContext executionPlanContext)
void	restoreState(Object[] state)
void	start()
void	stop()

Methods inherited from class org.wso2.siddhi.core.executor.function.FunctionExecutor

cloneExecutor, execute, getElementId, initExecutor

Methods inherited from class java.lang.Object

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

Constructor Detail

SignFunctionExtension

public SignFunctionExtension()

Method Detail

init

protected void init(org.wso2.siddhi.core.executor.ExpressionExecutor[] attributeExpressionExecutors,
        org.wso2.siddhi.core.config.ExecutionPlanContext executionPlanContext)

Specified by:

init in class org.wso2.siddhi.core.executor.function.FunctionExecutor

execute

protected Object execute(Object[] data)

Specified by:

execute in class org.wso2.siddhi.core.executor.function.FunctionExecutor

execute

protected Object execute(Object data)

Specified by:

execute in class org.wso2.siddhi.core.executor.function.FunctionExecutor

start

public void start()

stop

public void stop()

getReturnType

public org.wso2.siddhi.query.api.definition.Attribute.Type getReturnType()

currentState

public Object[] currentState()

restoreState

public void restoreState(Object[] state)