edmiRemoteGetQuerySchema

Returns a querySchemaId that uniquely identifies an EDMquerySchema in the remote EDMdatabase^.
Related functions: edmiRemoteGetQuery, edmiRemoteExecuteQuery, edmiRemoteExecuteQueryEx,
Header:
#include "sdai.h"
Prototype:
EdmiError edmiRemoteGetQuerySchema(SdaiServerContext serverContextId,
                                    SdaiString        schemaName,
                                    SdaiString        querySchemaName,
                                    SdaiQuerySchema   *querySchemaId,
                                    SdaiInvocationId  *edmiInvocationId);

Arguments:

serverContextId	Context identification, from edmiDefineServerContext
schemaName	The name of the Express Schema for which the Query Schema has been compiled. This Express Schema must be compiled to form a dictionary model in the _EDMdatabase^{_}. Express Schema names are case insensitive and unique within the scope of an _EDMdatabase^_ .
querySchemaName	The name of the Query Schema for which to retrieve its unique querySchemaId. Query Schema names are case insensitive and unique within the scope of an Express Schema.
querySchemaId	A variable that will receive the numeric querySchemaID that uniquely identifies the Query Schema instance in the remote _EDMdatabase^_ .
edmiInvocationId	Currently not used.

Returns:
A completion code of datatype EdmiError is the returned function value. The completion code has the following values:
Completion code = 0 : Operation successfully performed.
Completion code != 0: Error in operation. Completion code is an _EDMinterface^_ error code. Use edmiGetErrorText to get the error text corresponding to the error code.
Example:
/*
– --------------------------------------
– File: c:/data/furniture.exp
– --------------------------------------
SCHEMA Furniture
TYPE tScrewType = ENUMERATION OF (PHILIPS, ALLEN, FLAT); END_TYPE;
ENTITY Screw;
Id : STRING;
Typ : tScrewType;
Len : REAL;
Dia : REAL;
END_ENTITY;
ENTITY Dining_Table;
Name : STRING;
Legs : INTEGER;
Len : REAL;
Width : REAL;
Height : REAL;
Screws : BAG OF Screw;
END_ENTITY;
END_SCHEMA;

– ---------------------------------------
– File: c:/data/furniture_query.qex
– ---------------------------------------
QUERY_SCHEMA Furniture_Query FOR Furniture;
GLOBAL
DECLARE src INSTANCE OF Furniture;
END_GLOBAL;

VIEW_ENTITY View_Table;
Name : STRING;
Area : REAL;
END_VIEW_ENTITY;

QUERY_FUNCTION Dining_Table_Area (Area : REAL) : SET OF View_Table;
LOCAL
result : SET of View_Table;
currView : View_Table;
table_area : REAL;
END_LOCAL;
FROM(sdt:src::Dining_Table)
WHEN TRUE;
BEGIN
table_area := sdt.Len*sdt.Width;
IF(table_area > Area ) THEN
NEW currView;
currView.Name := sdt.Name;
currView.Area := table_area;
result ++ currView;
END_IF;
END;
RETURN(result);
END_QUERY_FUNCTION;
END_QUERY_SCHEMA;
*/
EdmiError rstat;
SdaiInteger nErr, nWrn;
SdaiServerContext myContext;
SdaiQuerySchema qexSchemaId;
SdaiQuery queryId;

/* Define Remote Server Context */
rstat = edmiDefineServerContext("MyRemoteServerContext",
"Johnny", "Supervisor", "cf37ftr",
"TCP", "9090", "MyServerHost",
NULL, NULL, NULL, NULL, NULL, &myContext);

/* Compile the Express Schema */
rstat = edmiRemoteDefineSchema(myContext, EXPRESS_SCHEMA_TYPE,
"c:/data/furniture.exp", "c:/temp/furniture.dia",
"Furniture", 0, &nWrn, &nErr, NULL);

/* Compile the Query Schema */
rstat = edmiRemoteDefineSchema(myContext, QUERY_SCHEMA_TYPE,
"c:/data/furniture_query.qex", "c:/temp/furniture_query.dia",
"Furniture_Query", 0, &nWrn, &nErr, NULL);

/* Get the Query Schema Id */
rstat = edmiRemoteGetQuerySchema(myContext, "Furniture",
"Furniture_Query", &qexSchemaId, NULL);
printf("\nQuery Schema Id = %d", qexSchemaId);

/* Get the Query Function Id */
rstat = edmiRemoteGetQuery(myContext, "Furniture",
"Furniture_Query", "Dining_Table_Area",
&queryId, NULL);
printf("\nQuery Function Id = %d", queryId);
. . .