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EdmiError edmiDeleteMethodSignature(SdaiInstance methodId);
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Deletes any additional information / documentation of a method from the EDMdatabase.
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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.
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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.
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Arguments
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| 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. |
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Return Value
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Options
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Example
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EdmiError rstat; SdaiInteger nErr, nWrn; SdaiInstance xpxMethodId; SdaiString parNamesXpx[4] = {"Name", "Sex", "Weight", NULL}; |
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SdaiPrimitiveType parTypesXpx[3] = {sdaiSTRING, sdaiINTEGER, sdaiREAL}; |
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/* Define Schemas */ |
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rstat = edmiDefineSchema("c:/data/person.exp", |
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"c:/temp/person.dia", |
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"Person", 0, &nWrn, &nErr); |
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rstat = edmiDefineSchemaMap("c:/data/person_maps.xpx", |
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"c:/temp/person_maps.dia", |
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0, &nWrn, &nErr); |
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/* Define Method Signatures */ |
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rstat = edmiDefineMethodSignature( "XPX", "Insert a Person", |
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"InsertPerson", "CLASS_INPUT", |
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parNamesXpx, parTypesXpx, |
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"Inserts a new person"); |
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/* Get Signature Ids */ |
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rstat = edmiGetMethodSignatureId("XPX", "Insert a Person", |
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"InsertPerson", &xpxMethodId); |
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. . . /* Delete Signature */ rstat = edmiDeleteMethodSignature(xpxMethodId); |
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Express Schema - -------------------------------------------------------------- |
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- File : c:/data/person.exp |
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- -------------------------------------------------------------- |
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SCHEMA person; |
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ENTITY aperson; |
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name : STRING; |
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sex : STRING; |
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weight : REAL; |
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END_ENTITY; |
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END_SCHEMA; |
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Express-X |
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Schema - -------------------------------------------------------------- - |
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File : c:/data/person_maps.xpx |
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- -------------------------------------------------------------- |
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SCHEMA_MAP InsertPerson; |
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GLOBAL |
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DECLARE src INSTANCE OF SOURCE_SCHEMA person; |
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DECLARE tar INSTANCE OF TARGET_SCHEMA person; |
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END_GLOBAL; |
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STATEMENTS; |
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LOCAL |
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npar : INTEGER; |
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fail : BOOLEAN := FALSE; |
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name : STRING; |
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sex : INTEGER; |
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weight : REAL; |
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parType : INTEGER; |
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END_LOCAL; |
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IF (xpxGetNumberOfUserParameters() = 3) THEN |
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xpxGetUserParameter(1, name); |
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xpxGetUserParameter(2, sex); |
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xpxGetUserParameter(3, weight); |
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xpxCreateInstanceAndPutAttrsBN(XPXTARGETMODELID, "aperson", 3, |
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xpxSTRING, name, xpxINTEGER, sex, xpxREAL, weight); |
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} |
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END_STATEMENTS; |
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END_SCHEMA_MAP; |
See also
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