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abstract | clearIndex () |
| | clears any index base for the constraint
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| constructor (string n) |
| | creates the object and sets its name
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bool | equal (AbstractConstraint c) |
| | returns True if the argument is equal to the current object, False if not
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abstract string | getCreateSql (string table_name, *hash< auto > opt) |
| | returns a string that can be used to create the constraint in the database
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string | getDisableSql (string table_name) |
| | returns a string that can be used to temporarily disable the constraint from the database; if disabling constraints is not supported, then the constraint will be dropped
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string | getDropSql (string table_name) |
| | returns a string that can be used to drop the constraint from the database
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string | getEnableSql (string table_name, *hash< auto > opt) |
| | returns a string that can be used to enable the constraint in the database; if disabling constraints is not supported, then the constraint will be dropped
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string | getName () |
| | returns the constraint name
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abstract list< auto > | getRenameSql (string table_name, string new_name) |
| | returns a list of SQL strings that can be used to rename the constraint in the database
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bool | hasColumn (string cname) |
| | returns True if the constraint references the named column
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| rename (string n) |
| | renames the constraint
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abstract bool | setIndexBase (string ix) |
| | returns True if the object supports an index property and is set, False if not
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abstract base class for constraints
