source: ePrescribing/trunk/p/C0PXEWD.m@ 1672

C0PXEWD   ; ERX/GPL - EWD based XPath utilities; 10/11/09 ; 5/4/12 4:29pm
        ;;1.0;C0P;;Apr 25, 2012;Build 103
        ;Copyright 2009 George Lilly.  Licensed under the terms of the GNU
        ;General Public License See attached copy of the License.
        ;
        ;This program is free software; you can redistribute it and/or modify
        ;it under the terms of the GNU General Public License as published by
        ;the Free Software Foundation; either version 2 of the License, or
        ;(at your option) any later version.
        ;
        ;This program is distributed in the hope that it will be useful,
        ;but WITHOUT ANY WARRANTY; without even the implied warranty of
        ;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        ;GNU General Public License for more details.
        ;
        ;You should have received a copy of the GNU General Public License along
        ;with this program; if not, write to the Free Software Foundation, Inc.,
        ;51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
        ;
        Q
        ;
        ; gpl July, 2010. This routine interfaces with EWD to generate an XPath
        ; array from an XML file. It recursively visits the EWD DOM and creates
        ; an XPath index, an XPath array of node values, and an XPath template
        ; in three different variables. It is used to prepare incoming xml for
        ; processing by applications. 
        ;
TEST    ;
        D XPATH($$FIRST($$ID("CCR1")),"/","GIDX","GARY")
        Q
        ;
TEST2   ;
        S REDUX="//soap:Envelope/soap:Body/GetPatientFullMedicationHistory5Response/GetPatientFullMedicationHistory5Result/patientDrugDetail"
        D XPATH($$FIRST($$ID("gpl")),"/","GIDX","GARY","",REDUX)
        Q
        ;
XPATH(ZOID,ZPATH,ZXIDX,ZXPARY,ZNUM,ZREDUX)      ; RECURSIVE ROUTINE TO POPULATE
        ; THE XPATH INDEX ZXIDX, PASSED BY NAME
        ; THE XPATH ARRAY XPARY, PASSED BY NAME
        ; ZOID IS THE STARTING OID
        ; ZPATH IS THE STARTING XPATH, USUALLY "/"
        ; ZNUM IS THE MULTIPLE NUMBER [x], USUALLY NULL WHEN ON THE TOP NODE
        ; ZREDUX IS THE XPATH REDUCTION STRING, TAKEN OUT OF EACH XPATH IF PRESENT
        I '$D(ZREDUX) S ZREDUX=""
        N NEWPATH
        N NEWNUM S NEWNUM=""
        I $G(ZNUM)>0 S NEWNUM="["_ZNUM_"]"
        S NEWPATH=ZPATH_"/"_$$TAG(ZOID)_NEWNUM ; CREATE THE XPATH FOR THIS NODE
        I $G(ZREDUX)'="" D  ; REDUX PROVIDED?
        . N GT S GT=$P(NEWPATH,ZREDUX,2)
        . I GT'="" S NEWPATH=GT
        S @ZXIDX@(NEWPATH)=ZOID ; ADD THE XPATH FOR THIS NODE TO THE XPATH INDEX
        N GD D DATA("GD",ZOID) ; SEE IF THERE IS DATA FOR THIS NODE
        I $D(GD(2)) M @ZXPARY@(NEWPATH)=GD ; IF MULITPLE DATA MERGE TO THE ARRAY
        E  I $D(GD(1)) S @ZXPARY@(NEWPATH)=GD(1) ; IF SINGLE VALUE, ADD TO ARRAY
        I GD'="" S @ZXPARY@(NEWPATH)=GD ; IF YES, ADD IT TO THE XPATH ARRAY
        N ZFRST S ZFRST=$$FIRST(ZOID) ; SET FIRST CHILD
        I ZFRST'="" D  ; THERE IS A CHILD
        . N ZMULT S ZMULT=$$ISMULT(ZFRST) ; IS FIRST CHILD A MULTIPLE
        . D XPATH(ZFRST,NEWPATH,ZXIDX,ZXPARY,$S(ZMULT:1,1:""),ZREDUX) ; DO THE CHILD
        N GNXT S GNXT=$$NXTSIB(ZOID)
        I GNXT'="" D  ; MOVE ON TO THE NEXT SIBLING
        . D XPATH(GNXT,ZPATH,ZXIDX,ZXPARY,$S(ZNUM>0:ZNUM+1,1:""),ZREDUX) ; DO NEXT SIB
        Q
        ;
PARSE(INXML,INDOC)      ;CALL THE EWD PARSER ON INXML, PASSED BY NAME
        ; INDOC IS PASSED AS THE DOCUMENT NAME TO EWD
        ; EXTRINSIC WHICH RETURNS THE DOCID ASSIGNED BY EWD
        N ZR
        K ^CacheTempEWD($j) ; CLEAN OUT ANYTHING THAT MIGHT HAVE BEEN THERE
        M ^CacheTempEWD($j)=@INXML ;
        S ZR=$$parseDocument^%zewdHTMLParser(INDOC)
        K ^CacheTempEWD($j) ;clean up after ourselves
        Q ZR
        ;
DELETE(INDOC)   ; DELETE A PARSED DOCUMENT FROM THE EWD DOM 
        ; AFTER IT'S NO LONGER NEEDED
        N OK
        S OK=$$removeDocument^%zewdDOM(INDOC)
        Q OK
        ;
ISMULT(ZOID)    ; RETURN TRUE IF ZOID IS ONE OF A MULTIPLE
        N ZN
        S ZN=$$NXTSIB(ZOID)
        I ZN'="" Q $$TAG(ZOID)=$$TAG(ZN) ; IF TAG IS THE SAME AS NEXT SIB TAG
        Q 0
        ;
DETAIL(ZRTN,ZOID)       ; RETURNS DETAIL FOR NODE ZOID IN ZRTN, PASSED BY NAME
        N DET
        D getElementDetails^%zewdXPath(ZOID,.DET)
        M @ZRTN=DET
        Q
        ;
ID(ZNAME)       ;RETURNS THE docOID OF THE DOCUMENT NAMED ZNAME
        Q $$getDocumentNode^%zewdDOM(ZNAME)
        ;
NAME(ZOID)      ;RETURNS THE NAME OF THE DOCUMENAT WITH docOID ZOID
        Q $$getDocumentName^%zewdDOM(ZOID)
        ;
FIRST(ZOID)     ;RETURNS THE OID OF THE FIRST CHILD OF ZOID
        N GOID
        S GOID=ZOID
        S GOID=$$getFirstChild^%zewdDOM(GOID)
        I GOID="" Q ""
        I $$getNodeType^%zewdDOM(GOID)'=1 S GOID=$$NXTCHLD(GOID)
        Q GOID
        ;
HASCHILD(ZOID)  ; RETURNS TRUE IF ZOID HAS CHILD NODES
        Q $$hasChildNodes^%zewdDOM(ZOID)
        ;
CHILDREN(ZRTN,ZOID)     ;RETURNS CHILDREN OF ZOID IN ARRAY ZRTN, PASSED BY NAME
        N childArray
        d getChildrenInOrder^%zewdDOM(ZOID,.childArray)
        m @ZRTN=childArray
        q
        ;
TAG(ZOID)       ; RETURNS THE XML TAG FOR THE NODE
        Q $$getName^%zewdDOM(ZOID)
        ;
NXTSIB(ZOID)    ; RETURNS THE NEXT SIBLING
        Q $$getNextSibling^%zewdDOM(ZOID)
        ;
NXTCHLD(ZOID)   ; RETURNS THE NEXT CHILD IN PARENT ZPAR
        N GOID
        S GOID=$$getNextChild^%zewdDOM($$PARENT(ZOID),ZOID)
        I GOID="" Q ""
        I $$getNodeType^%zewdDOM(GOID)'=1 S GOID=$$NXTCHLD(GOID)
        Q GOID
        ;
PARENT(ZOID)    ; RETURNS PARENT OF ZOID
        Q $$getParentNode^%zewdDOM(ZOID)
        ;
DATA(ZT,ZOID)   ; RETURNS DATA FOR THE NODE
        N ZT2
        S ZT2=$$getElementText^%zewdDOM(ZOID,.ZT2)
        M @ZT=ZT2
        Q
        ;Q $$getTextValue^%zewdXPath(ZOID)
        ;Q $$getData^%zewdDOM(ZOID,.ZT)
        ;