Package de.xima.fc.workflow

Class FlowGraphConnectionType

java.lang.Object

de.xima.fc.workflow.FlowGraphConnectionType

public final class FlowGraphConnectionType
extends Object

Constants with the bit flags for the different types of edges in a workflow node flow graph.

Since:

8.0.0

Author:

XIMA MEDIA GmbH

See Also:

, which contains the type of an edge in a flow graph., , which contains methods for querying a flow graph with filters., , for a filter on edge types.

Field Summary

Fields

Modifier and Type	Field	Description
static long	ALL	A union of all possible flow graph connection types.
static long	BACKWARDS	An edge that leads back to a previous node that has already been executed.
static long	CONTROL_TRANSFER	An edge between a node U and node V in the flow graph with the property that node U, when it completes abruptly by issuing a control transfer statement, can transfer control to node V.
static long	NONE	None of the available flow graph connection types.
static long	NORMAL	An edge between a node U and node V in the flow graph with the property that node U, when it completes normally, can transfer control to node V.
static long	RETURNING	An edge between a node U and node V in the flow graph with the property that node U, when it completes abruptly by issuing a return statement, can transfer control to node V.
static long	THROWING	An edge between a node U and node V in the flow graph with the property that node U, when it completes abruptly by throwing an exception, can transfer control to node V.

Method Summary

Modifier and Type	Method	Description
static boolean	excludesAllOf(long type, long excludeAllOf)
static boolean	excludesSomeOf(long type, long excludeSomeOf)
static boolean	includesAllOf(long type, long includeAllOf)
static boolean	includesSomeOf(long type, long includeSomeOf)
static boolean	isBackwards(long type)
static boolean	isControlTransfer(long type)
static boolean	isNormal(long type)
static boolean	isReturning(long type)
static boolean	isThrowing(long type)
static long	not(long type)

Methods inherited from class java.lang.Object

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

Field Detail

NONE

public static final long NONE

None of the available flow graph connection types.

See Also:

Constant Field Values

NORMAL

public static final long NORMAL

An edge between a node U and node V in the flow graph with the property that node U, when it completes normally, can transfer control to node V.

See Also:

Constant Field Values

THROWING

public static final long THROWING

An edge between a node U and node V in the flow graph with the property that node U, when it completes abruptly by throwing an exception, can transfer control to node V.

See Also:

Constant Field Values

CONTROL_TRANSFER

public static final long CONTROL_TRANSFER

An edge between a node U and node V in the flow graph with the property that node U, when it completes abruptly by issuing a control transfer statement, can transfer control to node V.

See Also:

Constant Field Values

RETURNING

public static final long RETURNING

An edge between a node U and node V in the flow graph with the property that node U, when it completes abruptly by issuing a return statement, can transfer control to node V.

See Also:

Constant Field Values

BACKWARDS

public static final long BACKWARDS

An edge that leads back to a previous node that has already been executed. For loop nodes, this is the edge from the end of the loop body back to the start of the loop body. You should combine this edge typ with NORMAL or THROWING.

More formally, assuming a valid flow graph where all nodes are reachable from the root, a back edge is an edge from node U to node V, with the additional property that every path from the root to V also includes U.

Back edges are excluded when searching for predecesors of a node, e.g. for showing a list of node placeholders in the workfow designer.

See Also:

Constant Field Values

ALL

public static final long ALL

A union of all possible flow graph connection types.

See Also:

Constant Field Values

Method Detail

excludesAllOf

public static boolean excludesAllOf(long type,
                                    long excludeAllOf)

Parameters:

type - A set of connection type flags, or'ed together.

excludeAllOf - One or more types against which to compare the given type.

Returns:

true if the type does not include any of the given exclude types.

See Also:

, which is the opposite of this method.

excludesSomeOf

public static boolean excludesSomeOf(long type,
                                     long excludeSomeOf)

Parameters:

type - A set of connection type flags, or'ed together.

excludeSomeOf - One or more types against which to compare the given type.

Returns:

true if the type includes all of the given types.

See Also:

, which is the opposite of this method.

includesAllOf

public static boolean includesAllOf(long type,
                                    long includeAllOf)

Parameters:

type - A set of connection type flags, or'ed together.

includeAllOf - One or more types against which to compare the given type.

Returns:

true if the type includes all of the given include types.

See Also:

, which is the opposite of this method.

includesSomeOf

public static boolean includesSomeOf(long type,
                                     long includeSomeOf)

Parameters:

type - A set of connection type flags to check, or'ed together.

includeSomeOf - One or more types against which to compare the given type.

Returns:

true if the type includes at least one of the given include types.

See Also:

, which is the opposite of this method.

isBackwards

public static boolean isBackwards(long type)

Parameters:

type - A set of connection type flags to check, or'ed together.

Returns:

Whether the flags include BACKWARDS.

isControlTransfer

public static boolean isControlTransfer(long type)

Parameters:

type - A set of connection type flags to check, or'ed together.

Returns:

Whether the flags include CONTROL_TRANSFER.

isNormal

public static boolean isNormal(long type)

Parameters:

type - A set of connection type flags to check, or'ed together.

Returns:

Whether the flags include NORMAL.

isReturning

public static boolean isReturning(long type)

Parameters:

type - A set of connection type flags to check, or'ed together.

Returns:

Whether the flags include RETURNING.

isThrowing

public static boolean isThrowing(long type)

Parameters:

type - A set of connection type flags to check, or'ed together.

Returns:

Whether the flags include THROWING.

not

public static long not(long type)

Parameters:

type - A set of connection type flags, or'ed together.

Returns:

A list of types other than the given types.