io.siddhi.extension.execution.json.function

Class IsExistsJSONFunctionExtension

java.lang.Object

io.siddhi.core.executor.function.FunctionExecutor

io.siddhi.extension.execution.json.function.IsExistsJSONFunctionExtension

All Implemented Interfaces:

io.siddhi.core.executor.ExpressionExecutor, Serializable

public class IsExistsJSONFunctionExtension
extends io.siddhi.core.executor.function.FunctionExecutor

This class provides implementation for checking whether there is any json element in the given path or not.

See Also:

Serialized Form

Field Summary

Fields inherited from class io.siddhi.core.executor.function.FunctionExecutor

attributeExpressionExecutors, functionId, processingMode, siddhiQueryContext

Constructor Summary

Constructors

Constructor and Description
IsExistsJSONFunctionExtension()

Method Summary

Modifier and Type	Method and Description
protected Object	execute(Object[] data, io.siddhi.core.util.snapshot.state.State state) The main execution method which will be called upon event arrival when there are more than one Function parameter
protected Object	execute(Object data, io.siddhi.core.util.snapshot.state.State state) The main execution method which will be called upon event arrival when there are zero or one Function parameter
io.siddhi.query.api.definition.Attribute.Type	getReturnType() return a Class object that represents the formal return type of the method represented by this Method object.
protected io.siddhi.core.util.snapshot.state.StateFactory	init(io.siddhi.core.executor.ExpressionExecutor[] attributeExpressionExecutors, io.siddhi.core.util.config.ConfigReader configReader, io.siddhi.core.config.SiddhiQueryContext siddhiQueryContext) The initialization method for FunctionExecutor, which will be called before other methods and validate the all configuration and getting the initial values.

Methods inherited from class io.siddhi.core.executor.function.FunctionExecutor

execute, execute, execute, initExecutor

Methods inherited from class java.lang.Object

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

Constructor Detail

IsExistsJSONFunctionExtension

public IsExistsJSONFunctionExtension()

Method Detail

init

protected io.siddhi.core.util.snapshot.state.StateFactory init(io.siddhi.core.executor.ExpressionExecutor[] attributeExpressionExecutors,
                                                               io.siddhi.core.util.config.ConfigReader configReader,
                                                               io.siddhi.core.config.SiddhiQueryContext siddhiQueryContext)

The initialization method for FunctionExecutor, which will be called before other methods and validate the all configuration and getting the initial values.

Specified by:

init in class io.siddhi.core.executor.function.FunctionExecutor

Parameters:

attributeExpressionExecutors - are the executors of each attributes in the Function

configReader - this hold the FunctionExecutor extensions configuration reader.

siddhiQueryContext - Siddhi query context

execute

protected Object execute(Object[] data,
                         io.siddhi.core.util.snapshot.state.State state)

The main execution method which will be called upon event arrival when there are more than one Function parameter

Specified by:

execute in class io.siddhi.core.executor.function.FunctionExecutor

Parameters:

data - the runtime values of Function parameters

Returns:

the Function result

execute

protected Object execute(Object data,
                         io.siddhi.core.util.snapshot.state.State state)

The main execution method which will be called upon event arrival when there are zero or one Function parameter

Specified by:

execute in class io.siddhi.core.executor.function.FunctionExecutor

Parameters:

data - null if the Function parameter count is zero or runtime data value of the Function parameter

Returns:

the Function result

getReturnType

public io.siddhi.query.api.definition.Attribute.Type getReturnType()

return a Class object that represents the formal return type of the method represented by this Method object.

Returns:

the return type for the method this object represents