io.cdap.wrangler.api

Interface TransientStore

All Superinterfaces:

Serializable

public interface TransientStore
extends Serializable

TransientStore is an interface that holds volatile information that's present across all the steps associated with the directives that are processing a single record.

Method Summary

Modifier and Type	Method and Description
<T> T	get(String name) A value associated with the variable in the transient store.
Set<String>	getVariables() Set of all the variables.
void	increment(TransientVariableScope scope, String name, long value) Increments a value of the variable.
void	reset(TransientVariableScope scope) Resets the state of this store.
void	set(TransientVariableScope scope, String name, Object value) Sets the value of the object for variable named 'name'.

Method Detail

reset

void reset(TransientVariableScope scope)

Resets the state of this store.

get

<T> T get(String name)

A value associated with the variable in the transient store.

Type Parameters:

T - type of the value to be returned.

Parameters:

name - of the variable to be retrieved.

Returns:

instance of object of type T.

set

void set(TransientVariableScope scope,
         String name,
         Object value)

Sets the value of the object for variable named 'name'.

Parameters:

name - of the variable for which the value needs to be set.

value - of the variable.

increment

void increment(TransientVariableScope scope,
               String name,
               long value)

Increments a value of the variable.

Parameters:

name - of the variable.

value - associated with the variable.

getVariables

Set<String> getVariables()

Set of all the variables.

Returns:

list of all the variables.