CL_FOBU_FORMULA - Formula Builder

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Functionality

Creating, changing, and storing random mathematic or Boolean formulas.

To evaluate the formulas, use the class CL_FOEV_FORMULA

Use

• Using the method CREATEyou create a formula; the result of the formula is of the type IM_DESIRED_TYPE.

• Using the function module FOBU_DIALOG_START, orFOBU_DIALOG_START_SUBSCREEN, you call the editor for this formula.

• Using the method SAVE, ou save the formula to the database. WithCREATE,an ID was supplied to EX_FORMULA_ID. You can use this ID later to access this formula.

• You can reload a stored formula for processing using the method LOAD.

• The method COPY creates a new instance as a copy of an existing instance.

• To link up to the transport system, use the methodsTRANSPORT_CHECK andTRANSPORT_INSERT.

• The method DELETE deletes a formula on the database.

• The method AS_TEXTgives a text display of the formula, with the technical name or short descriptions of the elements.

• The methods IS_CHANGED andIS_VALID display whether the formula was changed by a user and whether it can be evaluated.

Other methods are only relevant for the user interface (FOBU_DIALOG_START).

Notes

If the formula has application-defined fields, functions, or pushbuttons these must be transferred through implementation fromIF_FOBU_CONNECTOR to CL_FOBU_FORMULA.

If, while processing a formula, new application-defined fields are added, you can call the methodENVIRONMENT_RELOAD.

Further information

See example programs SFBE_EXAMPLE1 - SFBE_EXAMPLE6.

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