Component - Contexts - Composition

Below the structure of the free table-objects (contexts) is descibed. Context variabels are defined through free table-object tables (contexts). Context-Tabels contain the values of maximally 25 fields. A table is defined by 2 files.

A Structure-file (STR_file, with extension STR), that contains athe sets of field-names.
A tabel-file (TAB_file, with extension TAB) with per records the values of the fields

For Example.

EMP.STR

NAME STREET PLACE

EMP.TAB

KLEIN DORPSTRAAT WAPPERVEEN

GROOT KERSTAART GROTEBURGHT

Component - Contexts - Actions.

Through the usage of context-tables objects can be composed.

By iterating over related tables (see Action Scripts context-actions), complex constellations can be constructed.

In iterating over contexts the following actions can be used (See Action Scripts - Context-actions):

Define the names of a pair of files for a context table object (FILNAM_STR, FILNAM_PAR).
Iterate over a context table object FOR … NEXT_FOR.
In the first iteration the first record with its variables is pointed to. The next iteration points to the next record. The number of records equals the number of records in the TAB-file.

FOR … NEXT_FOR iterations can be nested. Combinations with IF-constructions (See Action-Scripts) enable the dynamic constructions of joins with other context table objects.
Within an iteration substitutions are possible with the context-variables.
By combining iterations of contexts with iterations of other objects complex substitution-actions are possible.

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Modgen : Component - Contexts

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Component - Contexts - Composition

Component - Contexts - Actions.

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