ModificationRule (Property)

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ModificationRule (Property)

In french: RègleModification

The ModificationRule property is used to configure the modification rule (integrity management) to be applied to the data file described in the code. You can:

Find out the modification rule used for a data file defined in the analysis or by programming.
Define the modification rule used for a data file (when the link is described by programming).

Example

// Define the modification rule used in the OrdLine link
OrdLine.ModificationRule = hIntegrityForbidden
...
// Validate the data file description
HDescribeFile(OrdLine)

Syntax

Finding out the modification rule Hide the details

<Modification rule> = <Binding>.ModificationRule

<Modification rule>: Integer constant

The different modification rules are as follows:
hIntegrityCascade Cascading modification: all the linked records are modified in cascade when the key item is modified in the source file.
hIntegrityDefaultValue Default modification: the linked keys are initialized with their default value when the key item is modified in the source file.
hIntegrityForbidden Modification not allowed: the key item cannot be modified in the source file if the record is linked to another record.
hIntegrityNone No integrity management: no specific action is performed in the linked file when the key item is modified in the source file of the link.

<Binding>: Character string

Name of the link defined in the analysis or by the Link description type.

Defining the modification rule used in the link defined through programming Hide the details

<Binding>.ModificationRule = <Modification rule>

<Binding>: Character string

Name of the link defined in the analysis or by the Link description type.

<Modification rule>: Integer constant

The different modification rules are as follows:
hIntegrityCascade Cascading modification: all the linked records are modified in cascade when the key item is modified in the source file.
hIntegrityDefaultValue Default modification: the linked keys are initialized with their default value when the key item is modified in the source file.
hIntegrityForbidden Modification not allowed: the key item cannot be modified in the source file if the record is linked to another record.
hIntegrityNone No integrity management: no specific action is performed in the linked file when the key item is modified in the source file of the link.