edmiDeleteMethodSignature
- Former user (Deleted)
EdmiError edmiDeleteMethodSignature(SdaiInstance methodId);
Deletes any additional information / documentation of a method from the EDMdatabase. A method signature is an instance of the EDM_METHOD entity in the ExpressDataManager model. A method is either an Express-X Mapping Schema or a Query Function. The method signature contains information about the required input parameters for each method. It may also contain a more general and descriptive text for documentation purposes. Query functions already have their parameters defined in the qurey function signature. Hence, they implicitely get a method signature definition in the ExpressDataManager model and they may therefore not be deleted. Therefore this method is only applicable on Express-X mapping schemas.
Arguments
| Type | Name | Comment |
| SdaiInstance | methodId | The instance Id of the method to be deleted. This Id is an instance of the EDM_METHOD entity in the ExpressDataManager model. |
Return Value
Options
Example
EdmiError rstat;
SdaiInteger nErr, nWrn;
SdaiInstance xpxMethodId;
SdaiString parNamesXpx[4] = {"Name", "Sex", "Weight", NULL};
SdaiPrimitiveType parTypesXpx[3] = {sdaiSTRING, sdaiINTEGER, sdaiREAL};
/* Define Schemas */
rstat = edmiDefineSchema("c:/data/person.exp",
"c:/temp/person.dia",
"Person", 0, &nWrn, &nErr);
rstat = edmiDefineSchemaMap("c:/data/person_maps.xpx",
"c:/temp/person_maps.dia",
0, &nWrn, &nErr);
/* Define Method Signatures */
rstat = edmiDefineMethodSignature( "XPX", "Insert a Person",
"InsertPerson", "CLASS_INPUT",
parNamesXpx, parTypesXpx,
"Inserts a new person");
/* Get Signature Ids */
rstat = edmiGetMethodSignatureId("XPX", "Insert a Person",
"InsertPerson", &xpxMethodId);
. . .
/* Delete Signature */
rstat = edmiDeleteMethodSignature(xpxMethodId);
Express Schema
- --------------------------------------------------------------
- File : c:/data/person.exp
- --------------------------------------------------------------
SCHEMA person;
ENTITY aperson;
name : STRING;
sex : STRING;
weight : REAL;
END_ENTITY;
END_SCHEMA;
Express-X Schema
- --------------------------------------------------------------
- File : c:/data/person_maps.xpx
- --------------------------------------------------------------
SCHEMA_MAP InsertPerson;
GLOBAL
DECLARE src INSTANCE OF SOURCE_SCHEMA person;
DECLARE tar INSTANCE OF TARGET_SCHEMA person;
END_GLOBAL;
STATEMENTS;
LOCAL
npar : INTEGER;
fail : BOOLEAN := FALSE;
name : STRING;
sex : INTEGER;
weight : REAL;
parType : INTEGER;
END_LOCAL;
IF (xpxGetNumberOfUserParameters() = 3) THEN
xpxGetUserParameter(1, name);
xpxGetUserParameter(2, sex);
xpxGetUserParameter(3, weight);
xpxCreateInstanceAndPutAttrsBN(XPXTARGETMODELID, "aperson", 3,
xpxSTRING, name, xpxINTEGER, sex, xpxREAL, weight);
}
END_STATEMENTS;
END_SCHEMA_MAP;
See also
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