org.wso2.extension.siddhi.execution.string

Class CoalesceFunctionExtension

java.lang.Object

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

org.wso2.extension.siddhi.execution.string.CoalesceFunctionExtension

All Implemented Interfaces:

org.wso2.siddhi.core.executor.ExpressionExecutor, org.wso2.siddhi.core.util.snapshot.Snapshotable

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

coalesce(arg1,arg2,...,argN) returns the value of the first of its input parameters that is not NULL Accept Type(s): Arguments can be of any type, given that the argument count is more than zero and all the arguments are of the same type. Return Type(s): Same type as the input

Field Summary

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

attributeExpressionExecutors, elementId, functionId, queryName, siddhiAppContext

Constructor Summary

Constructors

Constructor and Description
CoalesceFunctionExtension()

Method Summary

Modifier and Type	Method and Description
Map<String,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.util.config.ConfigReader configReader, org.wso2.siddhi.core.config.SiddhiAppContext siddhiAppContext)
void	restoreState(Map<String,Object> map)

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

CoalesceFunctionExtension

public CoalesceFunctionExtension()

Method Detail

init

protected void init(org.wso2.siddhi.core.executor.ExpressionExecutor[] attributeExpressionExecutors,
                    org.wso2.siddhi.core.util.config.ConfigReader configReader,
                    org.wso2.siddhi.core.config.SiddhiAppContext siddhiAppContext)

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

getReturnType

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

currentState

public Map<String,Object> currentState()

restoreState

public void restoreState(Map<String,Object> map)