Author: Sebastian Bergmann
Date: 2006-10-03 09:09:22 +0200 (Tue, 03 Oct 2006)
New Revision: 3620
Log:
Update.
Modified:
experimental/Workflow/design/design.txt
Modified: experimental/Workflow/design/design.txt
===================================================================
--- experimental/Workflow/design/design.txt 2006-10-02 16:34:06 UTC (rev
3619)
+++ experimental/Workflow/design/design.txt 2006-10-03 07:09:22 UTC (rev
3620)
@@ -194,45 +194,40 @@
is encapsulated by a class that implements the
ezcWorkflowServiceObject interface.
- class ezcWorkflowTestServiceObject
- implements ezcWorkflowServiceObject
+ class PrintSomething implements ezcWorkflowServiceObject
{
- private $message;
-
- public function __construct ( $message )
+ public function execute( ezcWorkflowExecution $execution )
{
- $this->message = $message;
+ print 'something';
}
- public function execute( ezcWorkflowExecution $execution )
+ public function __toString()
{
- print $this->message;
+ return 'PrintSomething';
}
}
- $foo = new ezcWorkflowNodeAction(
- new ezcWorkflowTestServiceObject( 'foo' )
- );
+ $print = new ezcWorkflowNodeAction( 'PrintSomething' );
- $start->addOutNode( $foo );
- $end->addInNode( $foo );
+ $start->addOutNode( $print );
+ $end->addInNode( $print );
- ezcWorkflowNodeInput
This type of node is used to model user interaction.
The example below creates an ezcWorkflowNodeInput node that expects
- an input field named "approval". The value of this field has to be
+ an input field named "choice". The value of this field has to be
boolean.
$input = new ezcWorkflowNodeInput(
array(
- 'approval',
+ 'choice',
new ezcWorkflowNodeInputConstraintBoolean
)
);
- When this node is executed it will check whether the "approval" field
+ When this node is executed it will check whether the "input" field
is available (in the ezcWorkflowExecution object). If that is not the
case then the workflow execution is suspended.
@@ -259,34 +254,59 @@
Based on a decision or workflow control data, a number of several
branches are chosen.
+ - Exclusive Choice (XOR-Split)
+
+ Based on a decision or workflow control data, one of several
+ branches is chosen.
+
+ This is a special case of the Multi-Choice (OR-Split) pattern.
+
The example below creates an ezcWorkflowNodeBranch node that
- conditionally activates one of two nodes, $foo and $bar, when it is
- reached.
+ conditionally activates one of two nodes, $true and $false,
+ when it is reached.
$xor = new ezcWorkflowNodeBranch;
- $xor->addInNode( $start );
+ $xor->addInNode( $input );
$xor->addConditionalOutNode(
- $foo,
- new ezcWorkflowCondition(
- ...
+ $true,
+ new ezcWorkflowConditionIsTrue(
+ 'choice'
)
);
$xor->addConditionalOutNode(
- $bar,
- new ezcWorkflowCondition(
- ...
+ $false,
+ new ezcWorkflowConditionIsFalse(
+ 'choice'
)
);
- - Exclusive Choice (XOR-Split)
+ Branching conditions are expressed using ezcWorkflowCondition objects.
+ These operate on fields ('choice' in the example above) that have been
+ filled by a previously executed ezcWorkflowNodeInput node.
- Based on a decision or workflow control data, one of several
- branches is chosen.
+ Below is a list of the available ezcWorkflowCondition classes:
- This is just a special case of the Multi-Choice (OR-Split) pattern.
+ - ezcWorkflowConditionIsEqual( String $inputField, Mixed $value )
+ - ezcWorkflowConditionIsNotEqual( String $inputField, Mixed $value )
+ - ezcWorkflowConditionIsGreaterThan( String $inputField, Mixed $value )
+ - ezcWorkflowConditionIsEqualOrGreaterThan( String $inputField, Mixed
$value )
+ - ezcWorkflowConditionIsLessThan( String $inputField, Mixed $value )
+ - ezcWorkflowConditionIsEqualOrLessThan( String $inputField, Mixed
$value )
+ - ezcWorkflowConditionIsTrue( String $inputField )
+ - ezcWorkflowConditionIsFalse( String $inputField )
+ These can be combined using the following boolean operators:
+
+ - ezcWorkflowConditionNot( ezcWorkflowCondition $condition )
+ - ezcWorkflowConditionAnd( ezcWorkflowCondition[] $conditions )
+ - ezcWorkflowConditionOr( ezcWorkflowCondition[] $conditions )
+ - ezcWorkflowConditionXor( ezcWorkflowCondition[] $conditions )
+
+ An ezcWorkflowNodeBranch node can have both conditional and
+ unconditional outgoing nodes.
+
- ezcWorkflowNodeSynchronization
This class implements the Synchronization workflow pattern.
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