com.github.dexecutor.core

Interface DependentTasksExecutor<T extends Comparable<T>>

Type Parameters:

T - Type of Node/Task ID

R - Type of Node/Task result

All Known Implementing Classes:

DefaultDependentTasksExecutor

public interface DependentTasksExecutor<T extends Comparable<T>>

Main Interface for Dexecutor framework, It provides api to build the graph and and to kick off the execution.

Author:

Nadeem Mohammad

See Also:

DefaultDependentTasksExecutor}

Nested Class Summary

Nested Classes

Modifier and Type

Interface and Description

static class

DependentTasksExecutor.ExecutionBehavior Defines the execution behavior of the tasks TERMINATING : Whole tasks execution would come to an end after the execution is thrown NON_TERMINATING : Tasks execution wont come to halt after an exception is thrown out of task RETRY_ONCE_TERMINATING : A retry would be attempted after an exception is thrown, and then if the execption is thrown again, the tasks execution would stop

Method Summary

Methods

Modifier and Type	Method and Description
void	addAsDependencyToAllInitialNodes(T nodeValue) Adds the node as dependency to all initial nodes (at the time of adding), meaning this given node would be evaluated first and then all initial nodes would run in parallel
void	addAsDependentOnAllLeafNodes(T nodeValue) Adds the node as dependent on all leaf nodes (at the time of adding), meaning all leaf nodes would be evaluated first and then the given node
void	addDependency(T evalFirstValue, T evalAfterValue) Add Two dependent nodes into the graph, creating the nodes if not already present
void	addIndependent(T nodeValue) Add a node as independent, it does not require any dependent node
void	execute(DependentTasksExecutor.ExecutionBehavior behavior) Kicks off the execution of the nodes based on the dependency graph constructed, using addDepen*** apis
void	print(Writer writer) Prints the graph into the writer

Method Detail

addIndependent

void addIndependent(T nodeValue)

Add a node as independent, it does not require any dependent node

Parameters:

nodeValue -

addDependency

void addDependency(T evalFirstValue,
                 T evalAfterValue)

Add Two dependent nodes into the graph, creating the nodes if not already present

evalFirstValue would be executed first and then evalAfterValue

Parameters:

evalFirstValue -

evalAfterValue -

addAsDependentOnAllLeafNodes

void addAsDependentOnAllLeafNodes(T nodeValue)

Adds the node as dependent on all leaf nodes (at the time of adding), meaning all leaf nodes would be evaluated first and then the given node

Parameters:

nodeValue -

addAsDependencyToAllInitialNodes

void addAsDependencyToAllInitialNodes(T nodeValue)

Adds the node as dependency to all initial nodes (at the time of adding), meaning this given node would be evaluated first and then all initial nodes would run in parallel

Parameters:

nodeValue -

execute

void execute(DependentTasksExecutor.ExecutionBehavior behavior)

Kicks off the execution of the nodes based on the dependency graph constructed, using addDepen*** apis

Parameters:

behavior -

print

void print(Writer writer)

Prints the graph into the writer

Parameters:

writer -