source: BMXNET_RPMS_dotNET_UTILITIES-BMX/trunk/m/BMXADO2.m@ 645

Last change on this file since 645 was 645, checked in by Sam Habiel, 14 years ago

Initial Import of BMX.net code
File size: 3.5 KB
Line 
1BMXADO2 ; IHS/CIHA/GIS - BMX ADO RECORDSET UTILS ;
2 ;;2.1;BMX;;Jul 26, 2009
3 ;
4 ;
5GEN(BMXY,BMXF) ;EP - Generate an ADO Schema string from a list of fields
6 ;BMXY Is an out-parameter called by reference.
7 ;On return, BMXY will be a zero-based one-dimensional array each node of which will
8 ;contain the schema corresponding to the fields info in BMXF
9 ;
10 ;BMXF is an in-parameter called by reference.
11 ;On input, BMXF will contain the field info on which to build the schema string.
12 ;
13 ;Field info in BMXF is arranged in a zero-based one-dimensional array.
14 ;Node 0 of BMXF contains the KEYFIELDNAME^FILENUMBER^READONLY
15 ;where KEYFIELDNAME is the name of the unique key field in the database and
16 ;FILENUMBER is the FileMan file number and
17 ;READONLY denotes whether the entire recordset is updateable.
18 ;
19 ;Each subsequent node of the BMXF arrray contains field info in the form
20 ;1FILE#^2FIELD#^3LENGTH^4DATATYPE^5ALIAS^6READONLY^7KEYFIELD^8NULLOK
21 ;If FILE# AND FIELD# are defined, the LENGTH and DATATYPE will be taken from the FileMan data dictionary
22 ;If ALIAS is defined, the schema string will use ALIAS as the column name
23 ;READONLY, KEYFIELD and NULLOK are binary fields. Note that there should be only one field
24 ;in the recordset having KEYFIELD=TRUE
25 ;
26 ;New column info format is @@@meta@@@KEYFIELD|FILE#
27 ; For each field: ^1FILE#|2FIELD#|3DATATYPE|4LENGTH|5FIELDNAME|6READONLY|7KEYFIELD|8NULL ALLOWED
28 ;example:
29 ;BMXY(0)="@@@meta@@@BMXIEN|2160010^"
30 ;BMXY(1)="2160010|.001|I|10|BMXIEN|TRUE|TRUE|FALSE^"
31 ;
32 S BMXY(0)="@@@meta@@@"_$G(BMXF(0))
33 N BMXI,BMXS,BMXFM,BMXDD,BMXTYP,BMXLEN,BMXLEN2,BMXNAM,BMXKEY,BMXREAD,BMXNULL
34 S BMXI=0
35 F S BMXI=$O(BMXF(BMXI)) Q:'+BMXI D
36 . N BMXFM,BMXDD,BMXTYP,BMXLEN,BMXLEN2,BMXNAM,BMXKEY,BMXREAD,BMXNULL
37 . S (BMXDD,BMXTYP,BMXLEN,BMXLEN2,BMXNAM,BMXKEY,BMXREAD,BMXNULL)=""
38 . S BMXFM=0 ;Flag indicating whether BMXF(BMXI) is a FileMan field
39 . S BMXY(BMXI)=""
40 . I BMXF(BMXI) S BMXY(BMXI)=$P(BMXF(BMXI),U,1,2) S BMXFM=1
41 . I BMXFM D ;Look in ^DD for attributes
42 . . S BMXDD=$G(^DD($P(BMXF(BMXI),U),$P(BMXF(BMXI),U,2),0))
43 . . ;column name
44 . . S BMXNAM=$P(BMXDD,U)
45 . . S BMXNAM=$TR(BMXNAM," ","_")
46 . . ;Data type
47 . . I $P(BMXDD,U,2)["P" S BMXDD=$$PTYPE(BMXDD)
48 . . S BMXTYP=$P(BMXDD,U,2)
49 . . S BMXTYP=$S(BMXTYP["F":"T",BMXTYP["S":"T",BMXTYP["D":"D")
50 . . I BMXTYP["N" S BMXTYP=$S($P(BMXTYP,",",2)>0:"N",1:"I")
51 . . ;default columnn lengths based on type
52 . . I BMXTYP="N"!(BMXTYP="I") S BMXLEN=$P(BMXDD,U,2),BMXLEN=$P(BMXLEN,","),BMXLEN=$E(BMXLEN,3,$L(BMXLEN))
53 . . I BMXTYP="I" S BMXLEN2=$P(BMXDD,U,2),BMXLEN2=$P(BMXLEN,",",2),BMXLEN=BMXLEN+BMXLEN2+1
54 . . I BMXTYP="T" S BMXLEN=0
55 . . I BMXTYP="D" S BMXLEN=30
56 . . S BMXNULL="TRUE" S:$P(BMXDD,U,2)["R" BMXNULL="FALSE"
57 . ;Look in BMXF for user-specified attributes
58 . S:$P(BMXF(BMXI),U,5)]"" BMXNAM=$P(BMXF(BMXI),U,5) ;Alias
59 . ;Set KEY, NULL and READONLY
60 . S BMXNULL="TRUE",BMXREAD="TRUE",BMXKEY="FALSE"
61 . I $P(BMXF(BMXI),U,7)="TRUE" S BMXKEY="TRUE",BMXNULL="FALSE",BMXREAD="TRUE"
62 . E S:$P(BMXF(BMXI),U,8)]"" BMXNULL=$P(BMXF(BMXI),U,8) S:$P(BMXF(BMXI),U,6)]"" BMXREAD=$P(BMXF(BMXI),U,6)
63 . ;Set BMXY node
64 . S $P(BMXY(BMXI),"|",3)=BMXTYP
65 . S $P(BMXY(BMXI),"|",4)=BMXLEN
66 . S $P(BMXY(BMXI),"|",5)=BMXNAM
67 . S $P(BMXY(BMXI),"|",6)=BMXREAD
68 . S $P(BMXY(BMXI),"|",7)=BMXKEY
69 . S $P(BMXY(BMXI),"|",8)=BMXNULL
70 ;
71 Q
72PTYPE(BMXDD) ;
73 ;Traverse pointer chain to retrieve data type of pointed-to field
74 N BMXFILE
75 I $P(BMXDD,U,2)'["P" Q BMXDD
76 S BMXFILE=$P(BMXDD,U,2)
77 S BMXFILE=+$P(BMXFILE,"P",2)
78 S BMXDD=$G(^DD(BMXFILE,".01",0))
79 S BMXDD=$$PTYPE(BMXDD)
80 Q BMXDD
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