EdmiError edmiRemoteDeleteMethodSignature(SdaiServerContext serverContextId, 
                                            SdaiString        methodType,           
                                            SdaiString        methodName, 
                                            SdaiString        schemaName,  
                                            SdaiInvocationId  *edmiInvocationId);

<Deletes any additional information / documentation of a method from a remote 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 query function signature. Hence, they implicitly 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
SdaiServerContext	serverContextId	Context identification, from edmiDefineServerContext
SdaiString	methodType	"XPX" is currently the only applicable method type.
SdaiString	methodName	The name that was assigned to the Express-X Mapping Schema method when it was defined.
SdaiString	schemaName	The name of the Express-X Schema Map.
SdaiInvocationId	edmiInvocationId	Currently not used.

Return Value

Error rendering macro 'excerpt-include' : User 'null' does not have permission to view the page 'US:_r_EDMInterface'.

Options

Example

 EdmiError rstat;
 SdaiInteger nErr, nWrn;
 SdaiServerContext myContext;
  
 /* Define Remote Server Context */
 rstat = edmiDefineServerContext("MyRemoteServerContext",
 "Johnny", "Supervisor", "cf37ftr", 
 "TCP", "9090", "MyServerHost", 
 NULL, NULL, NULL, NULL, NULL, &myContext); 
  
 /* Define Schemas */
 rstat = edmiRemoteDefineSchema(myContext, EXPRESS_SCHEMA_TYPE,
 "c:/data/person.exp", "c:/temp/person.dia", "Person", 
 DELETING_EXISTING_SCHEMAS | STORING_SOURCE, 
 &nWrn, &nErr, NULL); 
  
 rstat = edmiRemoteDefineSchema(myContext, EXPRESS_X_SCHEMA_TYPE,
 "c:/data/person_maps.xpx", "c:/temp/person_maps.dia", 
 "InsertPerson", DELETING_EXISTING_SCHEMAS | STORING_SOURCE, 
 &nWrn, &nErr, NULL); 
  
 rstat = edmiRemoteDefineSchema(myContext, QUERY_SCHEMA_TYPE,
 "c:/data/person_queries.xpx", "c:/temp/person_queries.dia", 
 "queries", DELETING_EXISTING_SCHEMAS | STORING_SOURCE, 
 &nWrn, &nErr, NULL); 
  
 /* Define XPX Method Signature */
 {
 SdaiString _parNamesXpx[4] = {"Name", "Sex", "Weight", NULL}; 
 SdaiPrimitiveType _parTypesXpx[3] = {sdaiSTRING, sdaiINTEGER, sdaiREAL}; 
  
 rstat = edmiRemoteDefineMethodSignature(myContext, "XPX", 
 "Insert a Person", "InsertPerson",  
 "CLASS_INPUT", _parNamesXpx, _parTypesXpx, 
 "Inserts a new person", NULL); 
 }
  
 /* Get QEX Method Signature */
 {
 SdaiInstance _qexMethodId; 
 SdaiString _qexMethodClass, _qexDesc, *_qexArgNames;  
 SdaiPrimitiveType _qexReturnType, *_qexArgTypes; 
 SdaiInteger _nArgs; 
  
 rstat = edmiRemoteGetMethodSignatureBN(myContext, "QEX", 
 "SexHeavierThan", "Person.Queries", 
 &_qexMethodId, &_qexMethodClass,  
 &_nArgs, &_qexReturnType, &_qexArgNames, 
 &_qexArgTypes, &_qexDesc, NULL); 
 }
  
 /* Modify QEX Method Signature */
 rstat = edmiRemoteModifyMethodSignature(myContext, "QEX",
 "SexHeavierThan", "Person.Queries", "CLASS_OUTPUT", 
 NULL, NULL, "Returns all persons of a given sex \ 
 exceeding a given threshold weight", NULL); 
  
 /* List Query Method Signatures */
 {
 SdaiString _typeFilter = "method_type = QEX"; 
 SdaiString _nameFilter = "name LIKE 'SEX*'"; 
 SdaiString _schemaFilter = "name = 'PERSON'"; 
 SdaiString _extraSchemaFilter = "name = 'QUERIES'"; 
 SdaiString _classFilter = "class = 'CLASS_OUTPUT'"; 
 SdaiString _ownerFilter = NULL; 
 SdaiString _groupFilter = NULL; 
 SdaiString *_methodNames = NULL; 
  
 rstat = edmiRemoteListMethodSignatures(myContext, _typeFilter,  
 _nameFilter, _schemaFilter, _extraSchemaFilter, 
 _classFilter, _ownerFilter, _groupFilter, 0,  
 &_methodNames, NULL); 
  
 while(*_methodNames) { 
 printf("\nMethod %s", *_methodNames); 
 ++_methodNames; 
 } 
 }
  
 /* Delete the XPX Method Signature */
 edmiRemoteDeleteMethodSignature(myContext, "XPX",
 "INSERT A PERSON", "InsertPerson", NULL); 
 . . .
  
 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;
  
 Query Schema.
 - --------------------------------------------------------------
 - File : c:/data/person_queries.qex
 - --------------------------------------------------------------
 QUERY_SCHEMA queries FOR person;
 GLOBAL
 DECLARE src INSTANCE OF person;
 END_GLOBAL;
  
 VIEW_ENTITY PersonView;
 name : STRING;
 sex : INTEGER;
 weight : REAL;
 END_VIEW_ENTITY;
  
 QUERY_FUNCTION SexHeavierThan ( p_sex:INTEGER; p_weight:REAL)
 : SET OF PersonView;
 LOCAL
 result : SET of PersonView;
 currView : PersonView;
 END_LOCAL;
  
 FROM(s:src::aperson)
 WHEN TRUE;
 BEGIN
 IF((s.sex = p_sex) AND (s.weight > p_weight)) THEN
 NEW currView;
 currView.name := s.name;
 currView.sex := s.sex;
 currView.weight := s.weight;
 result ++ currView;
 END_IF;
 END;
 RETURN(result);
 END_QUERY_FUNCTION;
 END_QUERY_SCHEMA;

See also

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