Package de.tsl2.nano.util

Class Flow

java.lang.Object

de.tsl2.nano.util.Flow

public class Flow
extends Object

Flow as simplest workflow base using implementations of Flow.ITask. It is the maker. going recursively through all tasks until end. experimental implementation having only one class file with inner classes and a fat interface

As AFunctionalTask is a base implementation of Flow.ITask, the Flow.CTask
provides an extension to be used on functional implementation.

Each task has a name (may be equal to the action definition representation), a condition
for activation and the action itself.

To persist a flow with its task tree, a gravito state diagram file will be created.
This can be rendered by gravito inside a markdown file. So, a graphical representation is given.

This base implementation of a workflow is used and extended inside the module 'tsl2.nano.specification' which provides conditions and actions as rules (through scripting, decision tables etc.) or specified actions.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Flow.ATask
static class	Flow.CTask	simple string-based task. context should match condition as string. expression has to point to a method.
static interface	Flow.ITask	base definition to do a simple workflow
class	Flow.RegExMatchContext
static class	Flow.RTask	simple http request task. condition should point to a rest-service with boolean response. expression to any rest service

Field Summary

Fields

Modifier and Type	Field	Description
protected static Class<? extends Flow.ITask>	DEFAULT_TASK_TYPE
static final String	FILE_EXT
protected static final String	GRVT_LABEL_END
protected static final String	GRVT_LABEL_START
protected static final String	NAME_END
protected static final String	NAME_START

Constructor Summary

Constructors

Constructor	Description
Flow()

Method Summary

Modifier and Type	Method	Description
void	addListener(Consumer<Flow.ITask> l)
boolean	equals(Object obj)
static <F extends Flow> F	fromString(F flow, String name, String expression, Class<? extends Flow.ITask> taskType)
String	getName()
boolean	isFailed(Deque<Flow.ITask> solved)
boolean	isSuccessfull(Deque<Flow.ITask> solved)
boolean	isUnConditioned(Deque<Flow.ITask> solved)
static <F extends Flow> F	load(F flow, File gravitoFile, Class<? extends Flow.ITask> taskType)
static Flow	load(File gravitoFile)
static Flow	load(File gravitoFile, Class<? extends Flow.ITask> taskType)
static void	main(String[] args)
void	persist()
void	persist(File gravitoFile)
Deque<Flow.ITask>	run(Map<String,Object> context)
void	setListeners(List<Consumer<Flow.ITask>> listeners)
void	setName(String name)
void	setTasks(Flow.ITask start)

Methods inherited from class java.lang.Object

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

Field Details

FILE_EXT

public static final String FILE_EXT

See Also:

• Constant Field Values

DEFAULT_TASK_TYPE

protected static Class<? extends Flow.ITask> DEFAULT_TASK_TYPE

NAME_START

protected static final String NAME_START

See Also:

• Constant Field Values

NAME_END

protected static final String NAME_END

See Also:

• Constant Field Values

GRVT_LABEL_START

protected static final String GRVT_LABEL_START

See Also:

• Constant Field Values

GRVT_LABEL_END

protected static final String GRVT_LABEL_END

See Also:

• Constant Field Values

Constructor Details

Flow

public Flow()

Method Details

setName

public void setName(String name)

setTasks

public void setTasks(Flow.ITask start)

setListeners

public void setListeners(List<Consumer<Flow.ITask>> listeners)

persist

public void persist()

persist

public void persist(File gravitoFile)

load

public static Flow load(File gravitoFile)

load

public static Flow load(File gravitoFile,
 Class<? extends Flow.ITask> taskType)

load

public static <F extends Flow> F load(F flow,
 File gravitoFile,
 Class<? extends Flow.ITask> taskType)

fromString

public static <F extends Flow> F fromString(F flow,
 String name,
 String expression,
 Class<? extends Flow.ITask> taskType)

getName

public String getName()

run

public Deque<Flow.ITask> run(Map<String,Object> context)

addListener

public void addListener(Consumer<Flow.ITask> l)

isSuccessfull

public boolean isSuccessfull(Deque<Flow.ITask> solved)

isUnConditioned

public boolean isUnConditioned(Deque<Flow.ITask> solved)

isFailed

public boolean isFailed(Deque<Flow.ITask> solved)

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

main

public static void main(String[] args)