Difference between revisions of "Statemachine DSL"

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−
== Copyright Notice ==
 
−
{{Copyright Notice}}
 
  
 
== Introduction ==
 
== Introduction ==
Line 6: Line 4:
 
=== State Machine ===
 
=== State Machine ===
  
−
'''State Machine''' or '''extended finite-state machine (EFSM)''' is a mathematical model of computation and represents an abstract machine that can be in exactly one of a finite number of states at any given time. The State Machine can change from one ''state'' to another in response to external ''events''. The change from one state to another is called a ''transition''. A FSM is defined by a list of its states, its ''initial state'', and the conditions for each transition. The condition for a transition is called ''guard''. There can be many guards protecting a transition to be triggered. Every guard is joined with a logical AND operation, so every guard must evaluate to true, to trigger a protected transition. Data operations can occur before a transition. They are called ''actions''. Actions prepare the next upcoming state, calculate things or display information.
+
'''State Machine''' or '''extended finite-state machine (EFSM)''' is a mathematical model of computation and represents an abstract machine that can be in exactly one of a finite number of states at any given time. The State Machine can change from one ''state'' to another in response to external ''events''. The change from one state to another is called a ''transition''. A EFSM is defined by a list of its states, its ''initial state'', and the conditions for each transition. The condition for a transition is called ''guard''. There can be many guards protecting a transition to be triggered. Every guard is joined with a logical AND operation, so every guard must evaluate to true, to trigger a protected transition. Data operations can occur before a transition. They are called ''actions''. Actions prepare the indicated state of the transition, calculate things or display information.
 +
The StatemachineDSL described in the following implements an EFSM where the FSM-block is represented by ''states'', the A-block is called ''actions'' and the E-block is called ''guards''.
  
−
 
+
=== Further reading ===
−
More information can be found at:
+
  
 
https://en.wikipedia.org/wiki/Finite-state_machine
 
https://en.wikipedia.org/wiki/Finite-state_machine
Line 23: Line 21:
 
The main semantic elements of the StatemachineDSL are:
 
The main semantic elements of the StatemachineDSL are:
 
*'''package''' - The root element that contains all the other elements. A model can contain multiple packages.  
 
*'''package''' - The root element that contains all the other elements. A model can contain multiple packages.  
−
*'''import''' declarations - Used to import external models or even Java classes.
+
*'''import''' declarations - Used to import external models or other Java classes.
−
*'''cube''' - The abstraction of a Mondrian cube. It contains further elements such as dimension, measure.
+
*'''statemachine''' - The container for the implementation of the EFSM following the state pattern.
−
*'''dimension''' -  Defines an attribute, or set of attributes, which is a collection of hierarchies, and by which you can divide measures into sub-categories. For example, you might wish to break down product sales by their color, the gender of the customer and the store in which the product was sold;  color, gender, and store are all dimensions.
+
*'''events''' -  Contains all user defined events.
−
*'''hierarchy''' - Defines a set of members organized into a structure for convenient analysis. For example, the store hierarchy consists of the store name, city, state, and nation. A hierarchy allows you to form intermediate sub-totals:  the sub-total for a state is the sum of the sub-totals of all of the cities in that state, each of which is the sum of the sub-totals of all the stores in that city.
+
*'''event''' - Defines a single event by id. Events build the interconnection elements between controls and transitions.
−
*'''entity''' - Defines which table and columns of the table the “hierarchy” uses.
+
*'''controls''' - The container for all type of beans (https://en.wikipedia.org/wiki/JavaBeans) to be controlled by the state machine.
−
*'''level''' - Defines a collection of members which have the same distance from the root of the hierarchy.
+
*'''scheduler''' - A type of bean that can be triggered to emit a defined event after a defined delay.
−
*'''property''' - Defines a member property. The definition is against a level, but the property is available to all members.
+
*'''keypad''' - A type of bean that builds a keypad containing one or more buttons to emit a defined event when pressed.
−
*'''dimensionUsage''' - Defines the shared dimension usage in a cube.
+
*'''fields''' - A type of bean that holds data of input fields or labels from UI.
−
*'''measure''' - The members of a special dimension, a quantity being measured, for example, unit sales of a product, or cost price of inventory items.
+
*'''dataProvider''' - A type of bean that retrieves and stores data based on DTO.
 +
*'''peripheral''' - A type of bean that controls input/output operations with peripheral units. Peripheral units can be printers, displays or other external devices following the JavaPOS standard (http://www.javapos.com/). Peripheral units can also emit events representing its current state or error.
 +
*'''attribute''' - Defines different types for usage with control.
 +
*'''states''' - The container for all state definitions of this state machine.
 +
*'''state''' - A single state the machine can be at a point in time.
 +
*'''triggers''' - The container for all possible event processing blocks inside a state.
 +
*'''trigger''' - The action block following this trigger will be executed when one of its events occur.
 +
*'''actions''' - The container for all process instructions to be done in sequence inside this block. Optionally an action block can follow a transition.
 +
*'''transition''' - The transition will be executed when all actions of this block were processed successfully.
 +
*'''guards''' - The container for guards protecting the following transistion.
 +
*'''guard''' - A condition that must evaluate to true that the following transistion will be processed.
  
−
===Keywords===
+
==== Syntax ====
 +
 
 +
===== package definition =====
 +
 
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
package <package name> [{
 +
statemachine <statemachine name> [describedBy <description string>]
 +
[functiongroup <function:FunctionLibraryStatemachineGroup>]
 +
initialState <StatemachineState>
 +
initialEvent <StatemachineEvent>
 +
events {
 +
event <event name>
 +
. . .
 +
}
 +
controls {
 +
StatemachineControl
 +
. . .
 +
}
 +
states {
 +
StatemachineState
 +
. . .
 +
}
 +
. . .
 +
}]
 +
</syntaxhighlight>
 +
 
 +
 
 +
► '''example''':
 +
<syntaxhighlight lang="java">
 +
package net.osbee.sample.foodmart.statemachines {
 +
statemachine CashTerminal describedBy "Cash Register" 
 +
functiongroup CashRegister
 +
initialState IDLE
 +
initialEvent onStartUp
 +
events {
 +
event onStartUp
 +
. . .
 +
}
 +
controls {
 +
scheduler Schedulers {. . .}
 +
. . .
 +
}
 +
states {
 +
state IDLE { . . .}
 +
. . .
 +
}
 +
}
 +
 
 +
</syntaxhighlight>
 +
 
 +
===== important definition =====
 +
 
 +
====== StatemachineActionFieldConcatenation ======
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
<STRING> [+ <STRING> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
<SignedNumber> [+ <SignedNumber> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
<INTEGER> [+ <INTEGER> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
<BOOLEAN> [+ <BOOLEAN> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
StatemachineEvaluationType [+ StatemachineEvaluationType . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
translate <STRING> [+ translate <STRING> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
get <StatemachineControlFieldAttribute> [+ get <StatemachineControlFieldAttribute> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
operation <function:FunctionLibraryOperation> (StatemachineActionFieldConcatenation[,StatemachineActionFieldConcatenation. . . ]) [+ operation <function:FunctionLibraryOperation>. . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
retrieve from <key ID>.<attribute ID> [+ retrieve from <key ID>.<attribute ID> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute> [+ dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute> . . .]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
function <function:FunctionLibraryFunction> (StatemachineActionFieldConcatenation[,StatemachineActionFieldConcatenation . . . ])
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
event
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentResponse from <StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
 
 +
 
 +
*StatemachineEvaluationType is including: getIPAddress |getHostName | getNow | getUserAgentInfo | isTouchDevice | isHttps | getBrowserLocale | getUserName| getUserPassword | getUserEmail | getUserPosition | getUserPrintService | getSceenWidth | getScreenHeight | getTrigger .
 +
 
 +
► '''example''':
 +
<syntaxhighlight lang="java">
 +
operation dopayment(retrieve from paymentMethod.last)
 +
</syntaxhighlight>
 +
 
 +
====== StatemachineActionFieldSource ======
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
<STRING>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
<SignedNumber>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
<INTEGER>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
<BOOLEAN>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
StatemachineEvaluationType
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
translate <STRING>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
get <StatemachineControlFieldAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
function <function:FunctionLibraryFunction> (StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation. . . ])
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
retrieve from <key ID>.<attribute ID>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
event
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentResponse from <StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
 
 +
* StatemachineEvaluationType is including: getIPAddress | getHostName | getNow | getUserAgentInfo | isTouchDevice | isHttps | getBrowserLocale | getUserName| getUserPassword | getUserEmail | getUserPosition | getUserPrintService | getSceenWidth | getScreenHeight | getTrigger.
 +
 
 +
 
 +
► '''example''':
 +
<syntaxhighlight lang="java">
 +
function getPaymentTotal()
 +
</syntaxhighlight>
 +
 
 +
====== StatemachineFilter ======
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
  and ( [StatemachineFilter] , StatemachineFilter. . . )
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
or ( [StatemachineFilter] , StatemachineFilter. . . )
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
StatemachineCompareOperationEnum (dto <StatemachineControlDTOAttribute>.< dto:LDtoInheritedAttribute>, StatemachineActionFieldSource)
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
isBetween(dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>, start StatemachineActionFieldSource, end StatemachineActionFieldSource)
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
isNull (dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>)
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
isLike (dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>, StatemachineActionFieldSource [ignoreCase])
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
not ( StatemachineFilter )
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
matches (dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>, <filterString> [ignoreCase] [onlyMatchPrefix])
 +
</syntaxhighlight>
 +
 
 +
* StatemachineCompareOperationEnum is including: equal | greater | less | greaterOrEqual | lessOrEqual.
 +
 
 +
 
 +
► '''example''':
 +
<syntaxhighlight lang="java">
 +
keystroke @paymentGiven and operation givenChanged()
 +
</syntaxhighlight>
 +
 
 +
====== StatemachineAction ======
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
blinkRate <rate INT> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
clearDevice <StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
createWindow row <viewportRow INT> column <viewportColumn INT> height <viewportHeight INT> width <viewportWidth INT> windowHeight <windowHeight INT> windowWidth <windowWidth INT> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
cursorType StatemachineLineDisplayCursorType @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
destroyWindow <StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
deviceBrightness <brightness INT> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
displayBitmap id <bitmapId INT> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
displayText text StatemachineActionFieldConcatenation [type StatemachineLineDisplayTextType] @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
displayTextAt text StatemachineActionFieldConcatenation row <row INT> column <column INT> [type StatemachineLineDisplayTextType] @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
interCharacterWait <wait INT> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
marqueeFormat StatemachineLineDisplayMarqueeFormat @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
marqueeRepeatWait <wait INT> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
marqueeType StatemachineLineDisplayMarqueeType @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
marqueeUnitWait <wait INT>  @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
scroll StatemachineLineDisplayScrollTextType <units INT> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
openDrawe <StatemachinePeripheralDeviceCashDrawer>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
printBarcode data <data STRING> barcodeType StatemachinePOSPrinterBarcodeType @<StatemachinePeripheralDevicePOSPrinter>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
printBitmap id <bitmapId INT> @<StatemachinePeripheralDevicePOSPrinter>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
printCut text StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePOSPrinter>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
printNormal text StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePOSPrinter>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
printerBitmap id <bitmapId INT> name <name STRING> @<StatemachinePeripheralDevicePOSPrinter>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
displayBitmap id <bitmapId INT> name <name STRING> @<StatemachinePeripheralDeviceLineDisplay>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentOpen host StatemachineActionFieldConcatenation port StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentClose @<StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentAcknowledge @<StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentReversal withPassword StatemachineActionFieldConcatenation ofReceipt StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentRegistration withPassword StatemachineActionFieldConcatenation configuration <configuration STRING> @<StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
paymentAuthorization ofAmount StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePT>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
printReport <report:Report> [from <StatemachineStorage>]
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
set StatemachineActionFieldConcatenation @<StatemachineControlFieldAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
remove <StatemachineControlFieldAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
visible <StatemachineControlVisibility>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
invisible <StatemachineControlVisibility>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
clear <StatemachineControlFieldAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
caption StatemachineActionFieldConcatenation @<StatemachineControlButtonAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
image <image STRING> @<StatemachineControlButtonAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
search StatemachineActionFieldConcatenation in <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
store StatemachineActionFieldConcatenation with <key ID>.<Attribute ID>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
schedule <StatemachineControlSchedulerAttribute>
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
operation <function:FunctionLibraryOperation> (StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation . . . ])
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
transition <StatemachineState> guard <function:FunctionLibraryGuard> [onFail caption <onFailCaption STRING> description <onFailDescription STRING> type StatemachineUserMessageType]{ StatemachineAction. . .}
 +
</syntaxhighlight>
 +
 
 +
* StatemachineLineDisplayCursorType is including: none | fixed | block | halfblock | underline | reverse | other | blink.
 +
* StatemachineLineDisplayTextType is including: normal | blink | reverse | blinkreverse.
 +
* StatemachineLineDisplayMarqueeFormat is including: walk | place.
 +
* StatemachineLineDisplayMarqueeType is including: none | up | down | left | right | init.
 +
* StatemachineLineDisplayScrollTextType is including: up | down | left | right.
 +
* StatemachinePOSPrinterBarcodeType is including: upca | upcb | jan8 | ean8 | jan13 | ean13 | tf | itf | codeabar | code39 | code93 | code128 | upca_s | upce_s | upcd1 | upcd2 | upcd3 | upcd4 | upcd5 | ean8_s | ean13_s | ean128 | orca | ocrb | code128_parsed | gs1databar | gs1databar_e | gs1databar_s | gs1databar_e_s | pdf417 | maxicode | datamatrix | qrcode | uqrcode | aztec | updf417.
 +
* StatemachineUserMessageType is including: humanized | warning | error | tray | assistive .
 +
 
 +
 
 +
 
 +
► '''example''':
 +
<syntaxhighlight lang="java">
 +
clearDevice LineDisplay
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
createWindow row 0 column 0 height 1 width 20 windowHeight 1 windowWidth 87 @LineDisplay
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
marqueeFormat walk @LineDisplay
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java"> 
 +
marqueeType init @LineDisplay
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
marqueeRepeatWait 800 @LineDisplay
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
marqueeUnitWait 100 @LineDisplay
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
displayText text "OS.bee is the only software that adapts to your business rules, rather than vice versa." @LineDisplay
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
invisible login
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
visible numbers
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
clear passwordEntry
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
set 0.0 @paymentGiven
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
operation loadPLU(1.0,6.0)
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
paymentOpen host dto cashregister.payment_ip port dto cashregister.payment_port @VeriFone
 +
</syntaxhighlight>
 +
 
 +
===== events =====
 +
 
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
events {
 +
event <event name>
 +
. . .
 +
}
 +
</syntaxhighlight>
 +
 
 +
*events - Contains all user defined events.
 +
*event - Defines a single event by id. Events build the interconnection elements between controls and transitions.
 +
 
 +
 
 +
► '''example''':
 +
<syntaxhighlight lang="java">
 +
events {
 +
event onStartUp
 +
. . .
 +
}
 +
</syntaxhighlight>
 +
 
 +
===== controls =====
 +
 
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
controls {
 +
StatemachineControl
 +
. . .
 +
}
 +
</syntaxhighlight>
 +
 
 +
 
 +
 
 +
<syntaxhighlight lang="java">
 +
keypad <name ID> event StatemachineControlButtonEventType {
 +
button <name ID> [image <image STRING>] key <keystroke STRING>|id <identity INT>|event <StatemachineEvent>
 +
. . .
 +
  }
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
fields <name ID> {
 +
field <name ID> type StatemachineFieldType
 +
. . .
 +
&
 +
layout <name ID>
 +
. . .
 +
  }
 +
</syntaxhighlight>
 +
or 
 +
<syntaxhighlight lang="java">
 +
dataProvider <name ID> {
 +
  dto <name ID> type <dto:LDto> [event <StatemachineEvent>]
 +
  . . .
 +
&
 +
  filter <name ID> StatemachineFilter
 +
    . . .
 +
  }
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
scheduler <name ID> {
 +
scheduler <name ID> delay <delay INT> send <StatemachineEvent>
 +
. . .
 +
  }
 +
</syntaxhighlight>
 +
or
 +
<syntaxhighlight lang="java">
 +
peripheral <name ID> {
 +
lineDisplay <name ID>
 +
. . .
 +
posPrinter <name ID>
 +
. . .
 +
cashDrawer <name ID>
 +
. . .
 +
payment <name ID>
 +
. . .
 +
  }
 +
</syntaxhighlight>
 +
 
 +
*'''controls''' - The container for all type of beans (https://en.wikipedia.org/wiki/JavaBeans) to be controlled by the state machine.
 +
*'''scheduler''' - A type of bean that can be triggered to emit a defined event after a defined delay.
 +
*'''keypad''' - A type of bean that builds a keypad containing one or more buttons to emit a defined event when pressed.
 +
*'''fields''' - A type of bean that holds data of input fields or labels from UI.
 +
*'''dataProvider''' - A type of bean that retrieves and stores data based on DTO.
 +
*'''peripheral''' - A type of bean that controls input/output operations with peripheral units. Peripheral units can be printers, displays or other external devices following the JavaPOS standard (http://www.javapos.com/). Peripheral units can also emit events representing its current state or error. The supported peripherals are listed [[OS.bee_peripherals_for_JavaPOS|here]].
 +
* '''StatemachineControlButtonEventType''' is including: keyboard | trigger | identity.
 +
* '''StatemachineFieldType''' is including: Boolean | Integer| Long | Double | String | Date | SuggestText.
 +
 
 +
 
 +
► '''example''':
 +
 
 +
<syntaxhighlight lang="java">
 +
keypad NumericPad event keyboard {
 +
button zero key "0"
 +
button one key "1"
 +
button two key "2"
 +
button three key "3"
 +
button four key "4"
 +
button five key "5"
 +
button six key "6"
 +
button seven key "7"
 +
button eight key "8"
 +
button nine key "9"
 +
button dzero key "00"
 +
button dot key "."
 +
}
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
fields UiControl {
 +
layout numbers
 +
layout login
 +
layout paymentFields
 +
layout entry
 +
layout functions
 +
layout plu
 +
layout money
 +
layout method
 +
layout receipt
 +
field passwordEntry type String
 +
field sku type SuggestText
 +
field paymentTotal type Double
 +
field paymentGiven type String
 +
field paymentChange type Double
 +
field paymentPayed type Double
 +
field qty type Double
 +
field totalAmount type Double
 +
field amount type Double
 +
field price type Double
 +
field productName type String
 +
field paymentTerminal type String
 +
field filterToggleStyle type String
 +
field blurEvent type EmbeddableEvent
 +
field focusEvent type EmbeddableEvent
 +
field contextEvent type EmbeddableEvent
 +
}
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
dataProvider DataControl {
 +
dto product type MproductDto
 +
dto cashregister type CashRegisterDto
 +
dto cashslip type CashSlipDto
 +
dto cashpayment type CashPaymentDto event onPaymentSelection
 +
dto cashposition type CashPositionDto event onPositionSelection
 +
dto cashpaymentmethod type CashPaymentMethodDto
 +
filter positionFilter equal(path cashposition.product.low_fat, true)
 +
}
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
scheduler Schedulers {
 +
scheduler toAutoLogout delay 10000 send onLogout
 +
scheduler toStart delay 100 send onStartUp
 +
scheduler toDisplayTest1 delay 10000 send onDisplayTest1
 +
scheduler toDisplayTest2 delay 6000 send onDisplayTest2 
 +
scheduler toDisplayTest3 delay 4000 send onDisplayTest3 
 +
scheduler toDisplayTest4 delay 3000 send onDisplayTest4 
 +
scheduler toDisplayTest5 delay 4000 send onDisplayTest5 
 +
scheduler toDisplayTest6 delay 1000 send onDisplayTest6 
 +
scheduler toDisplayTest7 delay 1000 send onDisplayTest7 
 +
scheduler toDisplayTestFinish delay 2000 send onDisplayTestFinish 
 +
scheduler toDisplayIdle delay 100 send onDisplayIdle
 +
scheduler toPaymentTerminalRecovery delay 1000 send onPaymentTerminalRecovery
 +
}
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
peripheral PeripheralControl {
 +
lineDisplay LineDisplay
 +
posPrinter POSPrinter
 +
cashDrawer CashDrawer
 +
payment VeriFone
 +
}
 +
</syntaxhighlight>
 +
 
 +
===== states =====
 +
 
 +
► '''Syntax''':
 +
<syntaxhighlight lang="java">
 +
states {
 +
StatemachineState
 +
. . .
 +
}
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
state <state name>{
 +
[triggers {
 +
trigger (<StatemachineEvent>. . .)
 +
[guards {
 +
guard <function:FunctionLibraryGuard> [onFail caption <onFailCaption STRING> description <onFailDescription STRING> type StatemachineUserMessageType]
 +
. . .
 +
}]
 +
actions [transition <StatemachineState>] {
 +
StatemachineAction
 +
. . .
 +
}
 +
. . .
 +
}]
 +
  & [identity operation <function:FunctionLibraryOperation> (StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation . . . ])]
 +
  & [keystroke @<StatemachineControlFieldAttribute> [and operation <function:FunctionLibraryOperation> (StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation . . . ]]]
 +
}
 +
</syntaxhighlight>
 +
 
 +
*'''states''' - The container for all state definitions of this state machine.
 +
*'''state''' - A single state the machine can be at a point in time.
 +
*'''triggers''' - The container for all possible event processing blocks inside a state.
 +
*'''trigger''' - The action block following this trigger will be executed when one of its events occur.
 +
*'''actions''' - The container for all process instructions to be done in sequence inside this block. Optionally an action block can follow a transition.
 +
*'''transistion''' - The transition will be executed when all actions of this block were processed successfully.
 +
*'''guards''' - The container for guards protecting the following transistion.
 +
*'''guard''' - A condition that must evaluate to true that the following transistion will be processed.
 +
* StatemachineUserMessageType is including: humanized |warning |error |tray |assistive.
 +
 
 +
► '''example''':
 +
<syntaxhighlight lang="java">
 +
state IDLE {
 +
triggers {
 +
trigger onStartUp
 +
actions transition LOCKED{
 +
clearDevice LineDisplay
 +
displayText text translate "locked" @LineDisplay
 +
invisible entry
 +
invisible receipt
 +
invisible FunctionPad
 +
invisible PaymentPad
 +
invisible PluPad
 +
invisible sku
 +
invisible plu
 +
invisible method
 +
invisible paymentFields
 +
invisible filterToggle
 +
visible login
 +
visible NumericPad
 +
visible numbers
 +
visible functions
 +
visible erase
 +
visible delete
 +
visible ok
 +
printerBitmap id 1 name "OSbee" @POSPrinter
 +
}
 +
}
 +
}
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
state MODIFY_PAYMENT {
 +
triggers {
 +
trigger onCancel
 +
actions transition PAYMENT{
 +
transition PAYMENTTERMINAL_REVERSAL guard  canCancelPaymentTerminal {
 +
visible paymentTerminal
 +
invisible money
 +
invisible method
 +
invisible functions
 +
store event with paymentMethod.last
 +
paymentReversal withPassword
 +
dto cashregister.payment_password
 +
ofReceipt function getSelectedPaymentReceipt() @VeriFone
 +
}
 +
operation cancelPayment()
 +
invisible cancelit
 +
visible numbers
 +
visible erase
 +
visible delete
 +
visible money
 +
visible method
 +
operation computePayed()
 +
operation givenChanged()
 +
clearDevice LineDisplay
 +
displayTextAt text translate "total" row 0 column 0 @LineDisplay
 +
displayTextAt text translate "remain" row 0 column 10 @LineDisplay
 +
displayTextAt text function getPaymentTotal() row 1 column 0 @LineDisplay
 +
displayTextAt text function getPaymentRemain() row 1 column 10 @LineDisplay
 +
}
 +
trigger onBack
 +
actions transition PAYMENT{
 +
visible numbers
 +
invisible cancelit
 +
visible erase
 +
visible delete
 +
visible money
 +
visible method
 +
}
 +
trigger onPaymentSelection
 +
guards {
 +
guard hasNoPaymentSelection
 +
}
 +
actions transition PAYMENT {
 +
visible numbers
 +
invisible cancelit
 +
visible erase
 +
visible delete
 +
visible money
 +
visible method
 +
}
 +
trigger onLogout
 +
actions transition IDLE{
 +
schedule toStart
 +
}
 +
}
 +
}
 +
</syntaxhighlight>
 +
 
 +
<syntaxhighlight lang="java">
 +
state PAYMENTTERMINAL_FAILURE {
 +
triggers {
 +
trigger onPaymentTerm
 +
actions transition PAYMENT {
 +
invisible paymentTerminal
 +
visible money
 +
visible method
 +
visible functions
 +
operation givenChanged()
 +
}
 +
}
 +
}
 +
</syntaxhighlight>
 +
 
 +
== Copyright Notice ==
 +
{{Copyright Notice}}

Latest revision as of 16:30, 3 May 2018

Introduction

State Machine

State Machine or extended finite-state machine (EFSM) is a mathematical model of computation and represents an abstract machine that can be in exactly one of a finite number of states at any given time. The State Machine can change from one state to another in response to external events. The change from one state to another is called a transition. A EFSM is defined by a list of its states, its initial state, and the conditions for each transition. The condition for a transition is called guard. There can be many guards protecting a transition to be triggered. Every guard is joined with a logical AND operation, so every guard must evaluate to true, to trigger a protected transition. Data operations can occur before a transition. They are called actions. Actions prepare the indicated state of the transition, calculate things or display information. The StatemachineDSL described in the following implements an EFSM where the FSM-block is represented by states, the A-block is called actions and the E-block is called guards.

Further reading

https://en.wikipedia.org/wiki/Finite-state_machine

https://en.wikipedia.org/wiki/Extended_finite-state_machine

https://en.wikipedia.org/wiki/UML_state_machine


Statemachine DSL

Statemachine DSL implements the state pattern (https://en.wikipedia.org/wiki/State_pattern) and interconnects UI model, FunctionLibrary, DTO and peripheral services like JavaPOS, ZVT protocol and others.

The main semantic elements of the StatemachineDSL are:

  • package - The root element that contains all the other elements. A model can contain multiple packages.
  • import declarations - Used to import external models or other Java classes.
  • statemachine - The container for the implementation of the EFSM following the state pattern.
  • events - Contains all user defined events.
  • event - Defines a single event by id. Events build the interconnection elements between controls and transitions.
  • controls - The container for all type of beans (https://en.wikipedia.org/wiki/JavaBeans) to be controlled by the state machine.
  • scheduler - A type of bean that can be triggered to emit a defined event after a defined delay.
  • keypad - A type of bean that builds a keypad containing one or more buttons to emit a defined event when pressed.
  • fields - A type of bean that holds data of input fields or labels from UI.
  • dataProvider - A type of bean that retrieves and stores data based on DTO.
  • peripheral - A type of bean that controls input/output operations with peripheral units. Peripheral units can be printers, displays or other external devices following the JavaPOS standard (http://www.javapos.com/). Peripheral units can also emit events representing its current state or error.
  • attribute - Defines different types for usage with control.
  • states - The container for all state definitions of this state machine.
  • state - A single state the machine can be at a point in time.
  • triggers - The container for all possible event processing blocks inside a state.
  • trigger - The action block following this trigger will be executed when one of its events occur.
  • actions - The container for all process instructions to be done in sequence inside this block. Optionally an action block can follow a transition.
  • transition - The transition will be executed when all actions of this block were processed successfully.
  • guards - The container for guards protecting the following transistion.
  • guard - A condition that must evaluate to true that the following transistion will be processed.

Syntax

package definition

► Syntax: 

package <package name> [{
	statemachine <statemachine name> [describedBy <description string>]
	[functiongroup <function:FunctionLibraryStatemachineGroup>]
	initialState <StatemachineState>
	initialEvent <StatemachineEvent>
	events {
		event <event name>
		. . .
	}
	controls {
		StatemachineControl
		. . .
	}
	states {
		StatemachineState
		. . .
	}
	. . . 
}]


► example: 

package net.osbee.sample.foodmart.statemachines {
 	statemachine CashTerminal describedBy "Cash Register"  
	functiongroup CashRegister
	initialState IDLE
	initialEvent onStartUp 
	events {
		event onStartUp
		. . .
}
	controls {
		scheduler Schedulers {. . .}
		. . .
}
	states {
		state IDLE { . . .}
		. . .
	}
}
important definition
StatemachineActionFieldConcatenation

► Syntax: 

 <STRING> [+ <STRING> . . .]

or 

<SignedNumber> [+ <SignedNumber> . . .]

or 

<INTEGER> [+ <INTEGER> . . .]

or 

<BOOLEAN> [+ <BOOLEAN> . . .]

or 

StatemachineEvaluationType [+ StatemachineEvaluationType . . .]

or 

translate <STRING> [+ translate <STRING> . . .]

or 

get <StatemachineControlFieldAttribute> [+ get <StatemachineControlFieldAttribute> . . .]

or 

operation <function:FunctionLibraryOperation> (StatemachineActionFieldConcatenation[,StatemachineActionFieldConcatenation. . . ]) [+ operation <function:FunctionLibraryOperation>. . .]

or 

retrieve from <key ID>.<attribute ID> [+ retrieve from <key ID>.<attribute ID> . . .]

or 

dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute> [+ dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute> . . .]

or 

function <function:FunctionLibraryFunction> (StatemachineActionFieldConcatenation[,StatemachineActionFieldConcatenation . . . ])

or 

event

or 

paymentResponse from <StatemachinePeripheralDevicePT>


  • StatemachineEvaluationType is including: getIPAddress |getHostName | getNow | getUserAgentInfo | isTouchDevice | isHttps | getBrowserLocale | getUserName| getUserPassword | getUserEmail | getUserPosition | getUserPrintService | getSceenWidth | getScreenHeight | getTrigger .

► example: 

operation dopayment(retrieve from paymentMethod.last)
StatemachineActionFieldSource

► Syntax: 

 <STRING>

or 

<SignedNumber>

or 

<INTEGER>

or 

<BOOLEAN>

or 

StatemachineEvaluationType

or 

translate <STRING>

or 

get <StatemachineControlFieldAttribute>

or 

function <function:FunctionLibraryFunction> (StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation. . . ])

or 

retrieve from <key ID>.<attribute ID>

or 

dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>

or 

event

or 

paymentResponse from <StatemachinePeripheralDevicePT>
  • StatemachineEvaluationType is including: getIPAddress | getHostName | getNow | getUserAgentInfo | isTouchDevice | isHttps | getBrowserLocale | getUserName| getUserPassword | getUserEmail | getUserPosition | getUserPrintService | getSceenWidth | getScreenHeight | getTrigger.


► example: 

function getPaymentTotal()
StatemachineFilter

► Syntax: 

  and ( [StatemachineFilter] , StatemachineFilter. . . )

or 

or ( [StatemachineFilter] , StatemachineFilter. . . )

or 

StatemachineCompareOperationEnum (dto <StatemachineControlDTOAttribute>.< dto:LDtoInheritedAttribute>, StatemachineActionFieldSource)

or 

isBetween(dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>, start StatemachineActionFieldSource, end StatemachineActionFieldSource)

or 

isNull (dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>)

or 

isLike (dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>, StatemachineActionFieldSource [ignoreCase])

or 

not ( StatemachineFilter )

or 

matches (dto <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>, <filterString> [ignoreCase] [onlyMatchPrefix])
  • StatemachineCompareOperationEnum is including: equal | greater | less | greaterOrEqual | lessOrEqual.


► example: 

keystroke @paymentGiven and operation givenChanged()
StatemachineAction

► Syntax: 

blinkRate <rate INT> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
clearDevice <StatemachinePeripheralDeviceLineDisplay>

or 

 
createWindow row <viewportRow INT> column <viewportColumn INT> height <viewportHeight INT> width <viewportWidth INT> windowHeight <windowHeight INT> windowWidth <windowWidth INT> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
cursorType StatemachineLineDisplayCursorType @<StatemachinePeripheralDeviceLineDisplay>

or 

 
destroyWindow <StatemachinePeripheralDeviceLineDisplay>

or 

 
deviceBrightness <brightness INT> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
displayBitmap id <bitmapId INT> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
displayText text StatemachineActionFieldConcatenation [type StatemachineLineDisplayTextType] @<StatemachinePeripheralDeviceLineDisplay>

or 

 
displayTextAt text StatemachineActionFieldConcatenation row <row INT> column <column INT> [type StatemachineLineDisplayTextType] @<StatemachinePeripheralDeviceLineDisplay>

or 

 
interCharacterWait <wait INT> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
marqueeFormat StatemachineLineDisplayMarqueeFormat @<StatemachinePeripheralDeviceLineDisplay>

or 

 
marqueeRepeatWait <wait INT> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
marqueeType StatemachineLineDisplayMarqueeType @<StatemachinePeripheralDeviceLineDisplay>

or 

 
marqueeUnitWait <wait INT>  @<StatemachinePeripheralDeviceLineDisplay>

or 

 
scroll StatemachineLineDisplayScrollTextType <units INT> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
openDrawe <StatemachinePeripheralDeviceCashDrawer>

or 

 
printBarcode data <data STRING> barcodeType StatemachinePOSPrinterBarcodeType @<StatemachinePeripheralDevicePOSPrinter>

or 

 
printBitmap id <bitmapId INT> @<StatemachinePeripheralDevicePOSPrinter>

or 

 
printCut text StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePOSPrinter>

or 

 
printNormal text StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePOSPrinter>

or 

 
printerBitmap id <bitmapId INT> name <name STRING> @<StatemachinePeripheralDevicePOSPrinter>

or 

 
displayBitmap id <bitmapId INT> name <name STRING> @<StatemachinePeripheralDeviceLineDisplay>

or 

 
paymentOpen host StatemachineActionFieldConcatenation port StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePT>

or 

 
paymentClose @<StatemachinePeripheralDevicePT>

or 

 
paymentAcknowledge @<StatemachinePeripheralDevicePT>

or 

 
paymentReversal withPassword StatemachineActionFieldConcatenation ofReceipt StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePT>

or 

 
paymentRegistration withPassword StatemachineActionFieldConcatenation configuration <configuration STRING> @<StatemachinePeripheralDevicePT>

or 

 
paymentAuthorization ofAmount StatemachineActionFieldConcatenation @<StatemachinePeripheralDevicePT>

or 

 
printReport <report:Report> [from <StatemachineStorage>]

or 

 
set StatemachineActionFieldConcatenation @<StatemachineControlFieldAttribute>

or 

 
remove <StatemachineControlFieldAttribute>

or 

 
visible <StatemachineControlVisibility>

or 

 
invisible <StatemachineControlVisibility>

or 

 
clear <StatemachineControlFieldAttribute>

or 

 
caption StatemachineActionFieldConcatenation @<StatemachineControlButtonAttribute>

or 

 
image <image STRING> @<StatemachineControlButtonAttribute>

or 

 
search StatemachineActionFieldConcatenation in <StatemachineControlDTOAttribute>.<dto:LDtoInheritedAttribute>

or 

 
store StatemachineActionFieldConcatenation with <key ID>.<Attribute ID>

or 

 
schedule <StatemachineControlSchedulerAttribute>

or 

 
operation <function:FunctionLibraryOperation> (StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation . . . ])

or 

transition <StatemachineState> guard <function:FunctionLibraryGuard> [onFail caption <onFailCaption STRING> description <onFailDescription STRING> type StatemachineUserMessageType]{ StatemachineAction. . .}
  • StatemachineLineDisplayCursorType is including: none | fixed | block | halfblock | underline | reverse | other | blink.
  • StatemachineLineDisplayTextType is including: normal | blink | reverse | blinkreverse.
  • StatemachineLineDisplayMarqueeFormat is including: walk | place.
  • StatemachineLineDisplayMarqueeType is including: none | up | down | left | right | init.
  • StatemachineLineDisplayScrollTextType is including: up | down | left | right.
  • StatemachinePOSPrinterBarcodeType is including: upca | upcb | jan8 | ean8 | jan13 | ean13 | tf | itf | codeabar | code39 | code93 | code128 | upca_s | upce_s | upcd1 | upcd2 | upcd3 | upcd4 | upcd5 | ean8_s | ean13_s | ean128 | orca | ocrb | code128_parsed | gs1databar | gs1databar_e | gs1databar_s | gs1databar_e_s | pdf417 | maxicode | datamatrix | qrcode | uqrcode | aztec | updf417.
  • StatemachineUserMessageType is including: humanized | warning | error | tray | assistive .


► example: 

clearDevice LineDisplay

createWindow row 0 column 0 height 1 width 20 windowHeight 1 windowWidth 87 @LineDisplay

marqueeFormat walk @LineDisplay

   
marqueeType init @LineDisplay

marqueeRepeatWait 800 @LineDisplay

marqueeUnitWait 100 @LineDisplay

displayText text "OS.bee is the only software that adapts to your business rules, rather than vice versa." @LineDisplay

invisible login

visible numbers

clear passwordEntry

set 0.0 @paymentGiven

operation loadPLU(1.0,6.0)

paymentOpen host dto cashregister.payment_ip port dto cashregister.payment_port @VeriFone
events

► Syntax: 

	
events {
	event <event name>
	. . .
}
  • events - Contains all user defined events.
  • event - Defines a single event by id. Events build the interconnection elements between controls and transitions.


► example: 

events {
	event onStartUp
	. . .
}
controls

► Syntax: 

controls {
	StatemachineControl
	. . .
}



keypad <name ID> event StatemachineControlButtonEventType {
	button <name ID> [image <image STRING>] key <keystroke STRING>|id <identity INT>|event <StatemachineEvent>
	. . .
  }

or 

fields <name ID> {
	 field <name ID> type StatemachineFieldType
	 . . .
	&
	 layout <name ID>
	 . . .
  }

or 

dataProvider <name ID> {
	  dto <name ID> type <dto:LDto> [event <StatemachineEvent>]
	  . . . 
	&
	  filter <name ID> StatemachineFilter
  	  . . .
  }

or 

 
scheduler <name ID> {
	scheduler <name ID> delay <delay INT> send <StatemachineEvent>
	. . .
  }

or 

peripheral <name ID> { 
	lineDisplay <name ID>
	. . .
	posPrinter <name ID>
	. . .
	cashDrawer <name ID>
	. . .
	payment <name ID>
	. . .
  }
  • controls - The container for all type of beans (https://en.wikipedia.org/wiki/JavaBeans) to be controlled by the state machine.
  • scheduler - A type of bean that can be triggered to emit a defined event after a defined delay.
  • keypad - A type of bean that builds a keypad containing one or more buttons to emit a defined event when pressed.
  • fields - A type of bean that holds data of input fields or labels from UI.
  • dataProvider - A type of bean that retrieves and stores data based on DTO.
  • peripheral - A type of bean that controls input/output operations with peripheral units. Peripheral units can be printers, displays or other external devices following the JavaPOS standard (http://www.javapos.com/). Peripheral units can also emit events representing its current state or error. The supported peripherals are listed here.
  • StatemachineControlButtonEventType is including: keyboard | trigger | identity.
  • StatemachineFieldType is including: Boolean | Integer| Long | Double | String | Date | SuggestText.


► example: 

keypad NumericPad event keyboard {
	button zero key "0" 
	button one key "1"
	button two key "2" 
	button three key "3"
	button four key "4" 
	button five key "5"
	button six key "6" 
	button seven key "7"
	button eight key "8" 
	button nine key "9"
	button dzero key "00" 
	button dot key "." 
}

fields UiControl {
	layout numbers
	layout login
	layout paymentFields
	layout entry
	layout functions
	layout plu
	layout money
	layout method
	layout receipt 
	field passwordEntry type String
	field sku type SuggestText
	field paymentTotal type Double
	field paymentGiven type String
	field paymentChange type Double 
	field paymentPayed type Double 
	field qty type Double 
	field totalAmount type Double
	field amount type Double
	field price type Double 
	field productName type String
	field paymentTerminal type String
	field filterToggleStyle type String
	field blurEvent type EmbeddableEvent
	field focusEvent type EmbeddableEvent
	field contextEvent type EmbeddableEvent
}

dataProvider DataControl { 
	dto product type MproductDto 
	dto cashregister type CashRegisterDto 
	dto cashslip type CashSlipDto
	dto cashpayment type CashPaymentDto event onPaymentSelection 
	dto cashposition type CashPositionDto event onPositionSelection 
	dto cashpaymentmethod type CashPaymentMethodDto
	filter positionFilter equal(path cashposition.product.low_fat, true)
}

scheduler Schedulers {
	scheduler toAutoLogout delay 10000 send onLogout
	scheduler toStart delay 100 send onStartUp
	scheduler toDisplayTest1 delay 10000 send onDisplayTest1
	scheduler toDisplayTest2 delay 6000 send onDisplayTest2  
	scheduler toDisplayTest3 delay 4000 send onDisplayTest3  
	scheduler toDisplayTest4 delay 3000 send onDisplayTest4  
	scheduler toDisplayTest5 delay 4000 send onDisplayTest5  
	scheduler toDisplayTest6 delay 1000 send onDisplayTest6  
	scheduler toDisplayTest7 delay 1000 send onDisplayTest7  
	scheduler toDisplayTestFinish delay 2000 send onDisplayTestFinish  
	scheduler toDisplayIdle delay 100 send onDisplayIdle
	scheduler toPaymentTerminalRecovery delay 1000 send onPaymentTerminalRecovery
}

peripheral PeripheralControl {
	lineDisplay LineDisplay 
	posPrinter POSPrinter
	cashDrawer CashDrawer
	payment VeriFone
}
states

► Syntax: 

states {
	StatemachineState
	. . .
}

state <state name>{
	[triggers {
		trigger (<StatemachineEvent>. . .)
		[guards { 
			guard <function:FunctionLibraryGuard> [onFail caption <onFailCaption STRING> description <onFailDescription STRING> type StatemachineUserMessageType]
			. . .
		}]
		actions [transition <StatemachineState>] { 
			StatemachineAction
			. . .
		}
		. . .
	}] 
  &	[identity operation <function:FunctionLibraryOperation>	(StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation . . . ])]
  &	[keystroke @<StatemachineControlFieldAttribute> [and operation <function:FunctionLibraryOperation> (StatemachineActionFieldConcatenation [,StatemachineActionFieldConcatenation . . . ]]]
}
  • states - The container for all state definitions of this state machine.
  • state - A single state the machine can be at a point in time.
  • triggers - The container for all possible event processing blocks inside a state.
  • trigger - The action block following this trigger will be executed when one of its events occur.
  • actions - The container for all process instructions to be done in sequence inside this block. Optionally an action block can follow a transition.
  • transistion - The transition will be executed when all actions of this block were processed successfully.
  • guards - The container for guards protecting the following transistion.
  • guard - A condition that must evaluate to true that the following transistion will be processed.
  • StatemachineUserMessageType is including: humanized |warning |error |tray |assistive.

► example: 

state IDLE { 
	triggers {
		trigger onStartUp
		actions transition LOCKED{
			clearDevice LineDisplay 
			displayText text translate "locked" @LineDisplay
			invisible entry
			invisible receipt 
			invisible FunctionPad
			invisible PaymentPad
			invisible PluPad
			invisible sku
			invisible plu
			invisible method
			invisible paymentFields
			invisible filterToggle
			visible login
			visible NumericPad 
			visible numbers
			visible functions
			visible erase
			visible delete
			visible ok
			printerBitmap id 1 name "OSbee" @POSPrinter
		}
	}
}

state MODIFY_PAYMENT {
	triggers {
		trigger onCancel 
		actions transition PAYMENT{
			transition PAYMENTTERMINAL_REVERSAL guard  canCancelPaymentTerminal {
				visible paymentTerminal
				invisible money
				invisible method
				invisible functions
				store event with paymentMethod.last
				paymentReversal withPassword 
				dto cashregister.payment_password 
				ofReceipt function getSelectedPaymentReceipt() @VeriFone
			}
			operation cancelPayment()
			invisible cancelit
			visible numbers
			visible erase
			visible delete
			visible money
			visible method
			operation computePayed()
			operation givenChanged()
			clearDevice LineDisplay
			displayTextAt text translate "total" row 0 column 0 @LineDisplay
			displayTextAt text translate "remain" row 0 column 10 @LineDisplay
			displayTextAt text function getPaymentTotal() row 1 column 0 @LineDisplay
			displayTextAt text function getPaymentRemain() row 1 column 10 @LineDisplay
		}
		trigger onBack
		actions transition PAYMENT{
			visible numbers
			invisible cancelit
			visible erase
			visible delete
			visible money
			visible method
		}
		trigger onPaymentSelection
		guards {
			guard hasNoPaymentSelection
		}
		actions transition PAYMENT {
			visible numbers
			invisible cancelit
			visible erase
			visible delete 
			visible money
			visible method
		}
		trigger onLogout
		actions transition IDLE{
			schedule toStart
		}
	}
}

state PAYMENTTERMINAL_FAILURE {
	triggers {
		trigger onPaymentTerm
		actions transition PAYMENT {
			invisible paymentTerminal
			visible money
			visible method
			visible functions
			operation givenChanged()
		}
	}
}

Copyright Notice

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(c) 2016-2024 Compex Systemhaus GmbH

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