source: FOIAVistA/tag/r/HEALTH_LEVEL_SEVEN-HL/HLOAPI.m@ 636

Last change on this file since 636 was 628, checked in by George Lilly, 14 years ago

initial load of FOIAVistA 6/30/08 version
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1HLOAPI ;ALB/CJM-HL7 - Developer API's for sending & receiving messages ;09/13/2006
2 ;;1.6;HEALTH LEVEL SEVEN;**126,133**;Oct 13, 1995;Build 13
3 ;Per VHA Directive 2004-038, this routine should not be modified.
4 ;
5NEWMSG(PARMS,HLMSTATE,ERROR) ;
6 ;Starts a new message.
7 ;Input:
8 ; PARMS( *pass by reference*
9 ; "COUNTRY")=3 character country code (optional)
10 ; "CONTINUATION POINTER" -indicates a fragmented message
11 ; "EVENT")=3 character event type (required)
12 ; "FIELD SEPARATOR")=field separator (optional, defaults to "|")
13 ; "ENCODING CHARACTERS")= 4 HL7 encoding characters (optional,defaults to "^~\&")
14 ; "MESSAGE STRUCTURE" - MSH 9, component 3 - a code from the standard HL7 table (optional)
15 ; "MESSAGE TYPE")=3 character message type (required)
16 ; "PROCESSING MODE" - MSH 11, component 2 - a 1 character code (optional)
17 ; "VERSION")=the HL7 Version ID, for example, "2.4" (optional, defaults to 2.4)
18 ;Output:
19 ; Function- returns 1 on success, 0 on failure
20 ; HLMSTATE() - (pass by reference, required) This array is used by the HL7 package to track the progress of the message. The application MUST NOT touch it!
21 ; PARMS - left defined when the function returns
22 ; ERROR (optional, pass by reference) - returns an error message on failure
23 ;
24 ;
25 N DATA,I,SYSTEM,SUCCESS
26 S SUCCESS=0
27 K ERROR,HLMSTATE
28 D
29 .I $L($G(PARMS("PROCESSING MODE"))),$L(PARMS("PROCESSING MODE"))'=1 S ERROR="INVALID PROCESSING MODE" Q
30 .I $L($G(PARMS("COUNTRY"))),$L(PARMS("COUNTRY"))'=3 S ERROR="INVALID COUNTRY CODE" Q
31 .I $L($G(PARMS("EVENT")))'=3 S ERROR="INVALID EVENT CODE" Q
32 .I $L($G(PARMS("MESSAGE TYPE")))'=3 S ERROR="INVALID MESSAGE TYPE" Q
33 .I $L($G(PARMS("ENCODING CHARACTERS"))),$L(PARMS("ENCODING CHARACTERS"))'=4 S ERROR="INVALID ENCODING CHARACTERS" Q
34 .I $L($G(PARMS("FIELD SEPARATOR"))),$L(PARMS("FIELD SEPARATOR"))'=1 S ERROR="INVALID FIELD SEPARATOR" Q
35 .I '$L($G(PARMS("FIELD SEPARATOR"))) S PARMS("FIELD SEPARATOR")="|"
36 .I '$L($G(PARMS("ENCODING CHARACTERS"))) S PARMS("ENCODING CHARACTERS")="^~\&"
37 .I $G(PARMS("VERSION"))="" S PARMS("VERSION")="2.4"
38 .I ($L($G(PARMS("VERSION")))>20) S ERROR="VERSION > 20 CHARACTERS" Q
39 .F I="MESSAGE TYPE","EVENT","COUNTRY","FIELD SEPARATOR","ENCODING CHARACTERS","VERSION","CONTINUATION POINTER","MESSAGE STRUCTURE","PROCESSING MODE" S HLMSTATE("HDR",I)=$G(PARMS(I))
40 .S HLMSTATE("BATCH")=0 ;not a batch
41 .S HLMSTATE("DIRECTION")="OUT"
42 .S HLMSTATE("IEN")=""
43 .S HLMSTATE("BODY")="" ;record not yet created
44 .S HLMSTATE("CURRENT SEGMENT")=0 ;no segments cached
45 .S HLMSTATE("UNSTORED LINES")=0 ;nothing in cache
46 .S HLMSTATE("LINE COUNT")=0
47 .D GETSYS(.HLMSTATE)
48 .S SUCCESS=1
49 Q SUCCESS
50 ;
51NEWBATCH(PARMS,HLMSTATE,ERROR) ;
52 ;Starts a new batch message.
53 ;Input:
54 ; PARMS( *pass by reference*
55 ; "COUNTRY")=3 character country code (optional)
56 ; "FIELD SEPARATOR")=field separator (optional, defaults to "|")
57 ; "ENCODING CHARACTERS")= 4 HL7 encoding characters (optional,defaults to "^~\&")
58 ; "VERSION")=the HL7 Version ID, for example, "2.4" (optional, defaults to 2.4)
59 ;Output:
60 ; Function - returns 1 on success, 0 on failure
61 ; PARMS - left defined when the function returns
62 ; HLMSTATE() - (pass by reference, required) This array is used by the HL7 package to track the progress of the message. The application MUST NOT touch it!
63 ; ERROR (optional, pass by reference) - returns an error message on failure
64 ;
65 ;
66 N DATA,I,SYSTEM,SUCCESS
67 S SUCCESS=0
68 K ERROR,HLMSTATE
69 D
70 .I $L($G(PARMS("COUNTRY"))),$L(PARMS("COUNTRY"))'=3 S ERROR="INVALID COUNTRY CODE" Q
71 .I $L($G(PARMS("ENCODING CHARACTERS"))),$L(PARMS("ENCODING CHARACTERS"))'=4 S ERROR="INVALID ENCODING CHARACTERS" Q
72 .I $L($G(PARMS("FIELD SEPARATOR"))),$L(PARMS("FIELD SEPARATOR"))'=1 S ERROR="INVALID FIELD SEPARATOR" Q
73 .I '$L($G(PARMS("FIELD SEPARATOR"))) S PARMS("FIELD SEPARATOR")="|"
74 .I '$L($G(PARMS("ENCODING CHARACTERS"))) S PARMS("ENCODING CHARACTERS")="^~\&"
75 .I $G(PARMS("VERSION"))="" S PARMS("VERSION")="2.4"
76 .I ($L(PARMS("VERSION"))>20) S ERROR="VERSION > 20 CHARACTERS" Q
77 .F I="COUNTRY","FIELD SEPARATOR","ENCODING CHARACTERS","VERSION" S HLMSTATE("HDR",I)=$G(PARMS(I))
78 .S HLMSTATE("IEN")=""
79 .S HLMSTATE("BODY")="" ;msg not yet stored
80 .S HLMSTATE("BATCH")=1
81 .S HLMSTATE("DIRECTION")="OUT"
82 .S HLMSTATE("BATCH","CURRENT MESSAGE")=0 ;no messages in batch
83 .S HLMSTATE("CURRENT SEGMENT")=0 ;no segments in cache
84 .S HLMSTATE("UNSTORED LINES")=0 ;nothing in cache
85 .S HLMSTATE("LINE COUNT")=0 ;no lines within message stored
86 .D GETSYS(.HLMSTATE)
87 .S SUCCESS=1
88 Q SUCCESS
89 ;
90SET(SEG,VALUE,FIELD,COMP,SUBCOMP,REP) ;
91 ;Sets a value to the array SEG(), used for building segments.
92 ;Input:
93 ; SEG - (required, pass by reference) - this is the array where the segment is being built.
94 ; VALUE - the individual value to be set into the segment
95 ; FIELD - the sequence # of the field (optional, defaults to 0)
96 ; *NOTE: FIELD=0 is used to denote the segment type.
97 ; COMP - the # of the component (optional, defaults to 1)
98 ; SUBCOMP - the # of the subcomponent (optional, defaults to 1)
99 ; REP - the occurrence# (optional, defaults to 1) For a non-repeating field, the occurrence # need not be provided, because it would be 1.
100 ;Output:
101 ; SEG array
102 ;
103 ; Example:
104 ; D SET(.SEG,"MSA",0) creates an MSA segment
105 ; D SET(.SEG,"AE",1) will place the value into the array position
106 ; reserved for the 1st field,1st occurence,1st comp,1st subcomp
107 ;
108 ;Implementation Note - This format is used for the segment array built by calls to SET: SEGMENT(<SEQ #>,<occurrence #>,<component #>,<subcomponent #>)=<subcomponent value>
109 ;
110 S:'$G(FIELD) FIELD=0
111 S:'$G(COMP) COMP=1
112 S:'$G(SUBCOMP) SUBCOMP=1
113 S:'$G(REP) REP=1
114 S SEG(FIELD,REP,COMP,SUBCOMP)=$G(VALUE)
115 Q
116 ;
117ADDSEG(HLMSTATE,SEG,ERROR) ;Adds a segment to the message.
118 ;Input:
119 ; HLMSTATE() - (pass by reference, required) This array is used by the HL7 package to track the progress of the message. The application MUST NOT touch it!
120 ; SEG() - (pass by reference, required) Contains the data. It must be built by calls to SET prior to calling $$ADDSEG.
121 ;
122 ;Note#1: The message control segments, including the MSH and BHS segments, are added automatically.
123 ;Note#2: The 0th field must be a 3 character segment type
124 ;Note#3: ***SEG is killed upon successfully adding the segment***
125 ;
126 ;Output:
127 ; HLMSTATE() - (pass by reference, required) This array is used by the HL7 package to track the progress of the message.
128 ; FUNCTION - returns 1 on success, 0 on failure
129 ; ERROR (optional, pass by reference) - returns an error message on failure
130 ;
131 ;
132 K ERROR
133 N TOARY,TYPE
134 ;
135 S TYPE=$G(SEG(0,1,1,1)) ;segment type
136 ;
137 ;if a 'generic' app ack MSA was built, add it as the first segment before this one
138 I $D(HLMSTATE("MSA")) D
139 .I TYPE'="MSA" S TOARY(1)=HLMSTATE("MSA") D ADDSEG^HLOMSG(.HLMSTATE,.TOARY) K TOARY
140 .K HLMSTATE("MSA")
141 ;
142 I ($L(TYPE)'=3) S ERROR="INVALID SEGMENT TYPE" Q 0
143 I (TYPE="MSH")!(TYPE="BHS")!(TYPE="BTS")!(TYPE="FHS")!(TYPE="FTS") S ERROR="INVALID SEGMENT TYPE" Q 0
144 I HLMSTATE("BATCH"),'HLMSTATE("BATCH","CURRENT MESSAGE") S ERROR="NO MESSAGES IN BATCH, SO SEGMENTS NOT ALLOWED" Q 0
145 I $$BUILDSEG^HLOPBLD(.HLMSTATE,.SEG,.TOARY,.ERROR) D ADDSEG^HLOMSG(.HLMSTATE,.TOARY) K SEG Q 1
146 Q 0
147 ;
148ADDMSG(HLMSTATE,PARMS,ERROR) ;
149 ;Begins a new message in the batch.
150 ;Input:
151 ; HLMSTATE() - (pass by reference, required) This array is used by the HL7 package to track the progress of the message. The application MUST NOT touch it!
152 ; PARMS( *pass by reference*
153 ; "EVENT")=3 character event type (required)
154 ; "MESSAGE TYPE")=3 character message type (required)
155 ;
156 ;Output:
157 ; FUNCTION - returns 1 on success, 0 on failure
158 ; HLMSTATE() - (pass by reference, required) This array is used by the HL7 package to track the progress of the message.
159 ; PARMS - left defined when this function returns
160 ; ERROR (optional, pass by reference) - returns an error message on failure
161 ;
162 N I
163 K ERROR
164 ;if a 'generic' app ack MSA was built, add it as the first segment before this one
165 I $D(HLMSTATE("MSA")) D
166 .I TYPE'="MSA" N TOARY M TOARY=HLMSTATE("MSA") D ADDSEG^HLOMSG(.HLMSTATE,.TOARY) K TOARY
167 .K HLMSTATE("MSA")
168 I $L($G(PARMS("EVENT")))'=3 S ERROR="EVENT TYPE INVALID" Q 0
169 I $L($G(PARMS("MESSAGE TYPE")))'=3 S ERROR="MESSAGE TYPE INVALID" Q 0
170 D ADDMSG^HLOMSG(.HLMSTATE,.PARMS)
171 Q 1
172 ;
173GETSYS(HLMSTATE) ;
174 N SYS,SUB
175 D SYSPARMS^HLOSITE(.SYS)
176 F SUB="DOMAIN","STATION","PROCESSING ID","MAXSTRING","ERROR PURGE","NORMAL PURGE","PORT" S HLMSTATE("SYSTEM",SUB)=SYS(SUB)
177 S HLMSTATE("SYSTEM","BUFFER")=SYS("USER BUFFER")
178 Q
179 ;
180MOVEMSG(HLMSTATE,ARY) ;
181 ;If a message was built in the 'old' way, and resides in an array, this routine will move it into file 777 (HL7 Message Body)
182 ;Input:
183 ; HLMSTATE (pass by reference) the array created by calling $$NEWMSG or $$NEWBATCH
184 ; ARY - is the name of the array, local or global, where the message was built, used to reference the array by indirection.
185 ;
186 N I S I=0
187 F S I=$O(@ARY@(I)) Q:'I D
188 .N SEG,J,J2
189 .S J=0,J2=1
190 .S SEG(J2)=@ARY@(I)
191 .F S J=$O(@ARY@(I,J)) Q:'J S J2=J2+1,SEG(J2)=@ARY@(I,J)
192 .I 'HLMSTATE("BATCH") D
193 ..D ADDSEG^HLOMSG(.HLMSTATE,.SEG)
194 .E D
195 ..I $E(SEG(1),1,3)="MSH" D
196 ...D SPLITHDR^HLOSRVR1(.SEG)
197 ...D ADDMSG2^HLOMSG(.HLMSTATE,.SEG)
198 ..E D ADDSEG^HLOMSG(.HLMSTATE,.SEG)
199 ;
200 ;signal SENDACK^HLOAPI2 that the application built its own msg
201 K HLMSTATE("MSA")
202 Q
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