BMXNET 4.0 Developer API

Calling a Custom Remote Procedure call (RPC) registered in VA FileMan’s REMOTE PROCEDURE file that results in a DataTable. You must design your remote procedure’s M routine to build its result its data in the specific format described later in this document.

Namespace:  IndianHealthService.BMXNet
Assembly:  BMXNET40 (in BMXNET40.dll)

Syntax

         
 C#  Visual Basic  Visual C++ 
DataTable TableFromCommand(
	string aCommand,
	string aContext
)
Function TableFromCommand ( _
	aCommand As String, _
	aContext As String _
) As DataTable
DataTable^ TableFromCommand(
	String^ aCommand, 
	String^ aContext
)

Parameters

aCommand
String
The co /// The name of the RPC
aContext
String
The AppContext to set prior to the call

Return Value

The resulting DataTable

Remarks

Normally the AppContext is set once, after logging into the BMX, with a single AppContext for the current applications or specified in every RPC call.

Examples

The VEN namespace is for PCC+ and the example below would be used at the beginning of a PCC+ application.
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            aRemoteSession.AppContext = "VEN RPC";
The M code for a simple remote procedure call (BMX PATIENT DEMO) with two parameters to return a list of patients. See the following example. Note the inclusion of an error trap in the routine; BMXNet RPC routines must contain a functional error trap.
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            Figure 5 2 shows the M code for a simple remote procedure call (BMX PATIENT DEMO) with two parameters to return a list of patients.  See the following example. Note the inclusion of an error trap in the routine; BMXNet RPC routines must contain a functional error trap.
            PDEMO(BMXY,BMXPAT,BMXCOUNT)	;EP
            	;This simple RPC demonstrates how to format data
            ;for the BMXNet ADO.NET data provider
            ;
            ;Returns a maximum of BMXCOUNT records from the
            ;VA PATIENT file whose names begin with BMXPAT
            ;
            N BMXI,BMXD,BMXC,BMXNODE,BMXDOB
            ;
            ; BMXY is passed in by reference.  Set it to 
            ;the value of the variable in which we will return our data:
            S BMXY="^TMP(BMX,"_$J_")"
            ;
            ;The first subnode of the data global contains the column header information
            ;in the form "txxxxxCOLUMN1NAME^txxxxxCOLUMN2NAME"_$C(30)
            ;where t is the column data type:
            ;	T for text
            ;	I for integer
            ;	N for floating point number
            ;	D for date/time.
            ;xxxxx is the length of the column in characters.
            ;
            S BMXI=0,BMXC=0
            S ^ TMP(BMX,$J,BMXI)="T00030NAME^T00010SEX^D00020DOB"_$C(30)
            ;
            ;You MUST set an error trap:
            S X="PDERR^BMXRPC6",@^%ZOSF("TRAP")
            ;
            ;Strip CR, LF, TAB from BMXCOUNT parameter
            S BMXCOUNT=$TR(BMXCOUNT,$C(13),"")
            S BMXCOUNT=$TR(BMXCOUNT,$C(10),"")
            S BMXCOUNT=$TR(BMXCOUNT,$C(9),"")
            ;
            ;Iterate through the global and set the data nodes:
            S:BMXPAT="" BMXPAT="A"
            S BMXPAT=$O(^DPT("B",BMXPAT),-1)
            S BMXD=0
            F  S BMXPAT=$O(^DPT("B",BMXPAT)) Q:BMXPAT=""  S BMXD=$O(^DPT("B",BMXPAT,0)) I +BMXD  S BMXC=BMXC+1 Q:(BMXCOUNT)BMXC BMXCOUNT)  D
            . Q:'$D(^DPT(BMXD,0))
            . S BMXI=BMXI+1
            . S BMXNODE=^DPT(BMXD,0)
            . ;Convert the DOB from FM date to external form
            . S Y=$P(BMXNODE,U,3)
            . I +Y X ^DD("DD")
            . S BMXDOB=Y
            . ;The data node fields are in the same order as the column header, i.e. NAME^SEX^DOB
            . ;and terminated with a $C(30)
            . S ^ TMP(BMX,$J,BMXI)=$P(BMXNODE,U)_U_$P(BMXNODE,U,2)_U_BMXDOB_$C(30)
            ;
            ;After all the data nodes have been set, set the final node to $C(31) to indicate
            ;the end of the recordset
            S BMXI=BMXI+1
            S ^ TMP(BMX,$J,BMXI)=$C(31)
            Q
            ;
            PDERR	;Error trap for PDEMO
            ;
            S ^ TMP(BMX,$J,BMXI+1)=$C(31)
            Q
Register as an RPC

NAME: BMX DEMO TAG: PDEMO ROUTINE: BMXRPC6 RETURN VALUE TYPE: GLOBAL ARRAY

Call using a RemoteSession
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            DataTable demoTable=aRemoteSession.TableFromCommand("BMX DEMO^S^10");

See Also