ee.telekom.workflow.graph.node.activity

Class ValidateAttributeActivity

java.lang.Object

ee.telekom.workflow.graph.node.AbstractNode

ee.telekom.workflow.graph.node.activity.ValidateAttributeActivity

All Implemented Interfaces:

Node

public class ValidateAttributeActivity
extends AbstractNode

Activity validating an attribute in the GraphInstance's Environment. For a required attribute, it checks that the attribute's value is set in the environment (possibly also to null) and that this value is assignable to the defined type. For an optional attribute, it initialises the value to a default, if it is not yet set in the environment and ensures that its value is assignable to the defined type.

Constructor Summary

Constructors

Constructor and Description
ValidateAttributeActivity(int id, String attribute, Class<?> type)
ValidateAttributeActivity(int id, String attribute, Class<?> type, boolean isRequired)
ValidateAttributeActivity(int id, String attribute, Class<?> type, boolean isRequired, Object defaultValue)
ValidateAttributeActivity(int id, String name, String attribute, Class<?> type, boolean isRequired, Object defaultValue)

Method Summary

Modifier and Type	Method and Description
void	cancel(GraphEngine engine, Token token) Called when the GraphEngine cancels the execution of a Token, that is currently pointing to this node and is in a wait state.
void	execute(GraphEngine engine, Token token) Performs node specific logic.
String	getAttribute()
Object	getDefaultValue()
Class<?>	getType()
boolean	isRequired()
void	store(Environment environment, Object result) When a token execution on a node completes and returns control back to the engine, then the engine mandates the node to store the node execution result into the graph instance's environment.

Methods inherited from class ee.telekom.workflow.graph.node.AbstractNode

getId, getName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ValidateAttributeActivity

public ValidateAttributeActivity(int id,
                                 String attribute,
                                 Class<?> type)

ValidateAttributeActivity

public ValidateAttributeActivity(int id,
                                 String attribute,
                                 Class<?> type,
                                 boolean isRequired)

ValidateAttributeActivity

public ValidateAttributeActivity(int id,
                                 String attribute,
                                 Class<?> type,
                                 boolean isRequired,
                                 Object defaultValue)

ValidateAttributeActivity

public ValidateAttributeActivity(int id,
                                 String name,
                                 String attribute,
                                 Class<?> type,
                                 boolean isRequired,
                                 Object defaultValue)

Method Detail

getAttribute

public String getAttribute()

isRequired

public boolean isRequired()

getType

public Class<?> getType()

getDefaultValue

public Object getDefaultValue()

execute

public void execute(GraphEngine engine,
                    Token token)

Description copied from interface: Node

Performs node specific logic. Either from the execute method, or later from the outside, the GraphEngineFacade#complete(WorkItem) method must be called to continue executing the GraphInstance.

Parameters:

engine - the GraphEngine which is performing the execution

token - the Token which is currently executing in this node

cancel

public void cancel(GraphEngine engine,
                   Token token)

Description copied from interface: Node

Called when the GraphEngine cancels the execution of a Token, that is currently pointing to this node and is in a wait state.

Parameters:

engine - the GraphEngine which is performing the execution

token - the Token pointing to this node

store

public void store(Environment environment,
                  Object result)

Description copied from interface: Node

When a token execution on a node completes and returns control back to the engine, then the engine mandates the node to store the node execution result into the graph instance's environment.

Parameters:

environment - the environment to store the result in

result - the result to be stored