- The user provides a True/False statement for the YES output by double-clicking on the block.
- When a discrete event message enters the Branch Block, the block evaluates the statement.
- If the statement resolves to a TRUE, the Block directs the original message , unchanged, through the YES output port. If the statement resolves to a FALSE, it directs the original message through the NO output port.
ADL Tip: Though both the Branch Block and the State Block look alike, they are fundamentally different – whereas the State Block waits until one of the internalized True/False statements turn TRUE to output a message, the Branch Block immediately directs the incoming message either through the YES or the NO output port.
Recommended Tutorials For This Section
For a tactile learning experience, please try the following tutorial:
Branch Block, Value Accumulator Block
Double-Click Edit Window
Double-click on the block to bring up an edit window:
- Clicking on the formula link will display a green canvas where the user can define a True/False statement. An incoming discrete event message will be directed through the YES output port if the statement resolves to a TRUE, and through the NO output port if the statement resolves to a FALSE.
Internalized Logic Canvas
Internalized Logic Canvas: Several blocks in ADL contain an internalized logic canvas which can be accessed by double-clicking on the block.
Example. Internal Logic Canvas
The canvas is used to define user-made equations which will play an important role in the overall operation of the respective block. The following icons can be dragged onto the green canvas to define an equation:
- : These icons can be linked to define an arithmetic equation or a True/False statement.
- : The Block Value Icon allows the user to reference the output of any other block in the algorithm. When dragged onto the canvas, the Block Value Icon will display a menu from which the user will be able to choose a block within the algorithm (except for the blocks contained in a virtualized block).
: The Message Info Icon allows the user to extract certain information embedded within a discrete event message, such as a Fill Confirmation Message. When dragged onto the canvas, the Message Info Icon will display the following selectable fields:
Field Description Limit The price of the respective order or the order about to be submitted OrderQty The total order quantity of the respective order or the order about to be submitted WorkingQty The working quantity of the respective order or the order about to be submitted FillPrice Fill price FillQty Fill quantity Instrument Instrument of the submitted order ExeQty Total filled quantity of the respective order DisclosedQty The disclosed quantity or percentage (%) of total goal quantity viewable to the market DeletedQty The canceled quantity of the deleted order or the order about to be deleted IsBuy When this field is selected, the respective block will evaluate the user's fill confirmations messages (not trade data message disseminated by the exchange) and will output a Boolean value of TRUE if the user's fill was a buy side execution StopTrigger The price at which the respective stop-limit or stop-market order is activated TradeQty Quantity of the last trade for a specific instrument TradePrice Price of the last trade for a specific instrument IsQuotingOrder Applies to discrete event messages generated by an ASE Order Block. The field will output a Boolean value of TRUE if the message was generated from an order submission for the quote leg of the respective spread IsHedgeOrder Applies to discrete event messages generated by an ASE Order Block. The field will output a Boolean value of TRUE if the message was generated from an order submission for the hedge leg of the respective spread User Field 1 - 4 An empty field that can be populated with a value using a Value Injector Block. The value may then be extracted using a Value Extractor Block