SDATA Section with mutiple occurrence in one document

Question

Hello,
in a user defined datastore I create the following xml document:
<name>Huber</name><vname>Astrid</vname><pcb>1006498200</pcb><pcb>8553001101</pcb><pcb>8553002201</pcb>
begin
ctx_ddl.create_preference(preference_name=>'name_store',object_name=>'USER_DATASTORE');
ctx_ddl.set_attribute (preference_name=>'name_store',attribute_name=>'procedure',attribute_value=>'names_proc');
ctx_ddl.create_section_group ('name_sg', 'basic_section_group');
ctx_ddl.add_field_section ('name_sg', 'name', 'name');
ctx_ddl.add_field_section ('name_sg', 'vname', 'vname');
ctx_ddl.add_sdata_section ('name_sg', 'pcb', 'pcb', 'varchar2');
end;
The field PCB is used in an SDATA section. When I query the table I get a result for
select * from tbl0100person where contains(name1,'huber within name and astrid within vname and sdata (pcb=''8553002201'')')>0;
but not for the other two values 8553001101 and 1006498200 of pcb. It seems that a SDATA section only uses the last occurrence of pcb in the document.
Is there another possibility to index all three values of pcb?

Answer 1

According to:
http://docs.oracle.com/database/121/CCREF/cddlpkg.htm#CCREF2103
"SDATA are single-occurrence only. If multiple instances of an SDATA tag are encountered in a single document, then later instances supersede the value set by earlier instances. This means that the last occurrence of an SDATA tag takes effect."
As a workaround, you could make the pcb another field section, instead of sdata section, as shown below, adapting some code from your other thread.
SCOTT@orcl12c> CREATE TABLE tbl0100anschrift -- an
  2    (persno    NUMBER,
  3      plz    VARCHAR2(15),
  4      ort    VARCHAR2(15),
  5      str    VARCHAR2(15))
  6  /
Table created.
SCOTT@orcl12c> INSERT INTO tbl0100anschrift VALUES (1, '', '', '')
  2  /
1 row created.
SCOTT@orcl12c> CREATE TABLE tbl0100person -- pers
  2    (persno    NUMBER,
  3      name1    VARCHAR2(15),
  4      name3    VARCHAR2(15))
  5  /
Table created.
SCOTT@orcl12c> INSERT INTO tbl0100person VALUES (1, 'Huber', 'Astrid')
  2  /
1 row created.
SCOTT@orcl12c> CREATE TABLE tbl2000pcbperson -- pp
  2    (persno    NUMBER,
  3      pcbid    NUMBER)
  4  /
Table created.
SCOTT@orcl12c> INSERT ALL
  2  INTO tbl2000pcbperson VALUES (1, 8553002201)
  3  INTO tbl2000pcbperson VALUES (1, 8553001101)
  4  INTO tbl2000pcbperson VALUES (1, 1006498200)
  5  SELECT * FROM DUAL
  6  /
3 rows created.
SCOTT@orcl12c> CREATE OR REPLACE PROCEDURE names_proc (p_rid  IN rowid,p_clob IN OUT nocopy clob) IS
  2  l_adresse VARCHAR2(4000);
  3  l_name VARCHAR2(200);
  4  l_pcbid VARCHAR2(4000);
  5  l_persno VARCHAR2(32);
  6  l_xmlDoc VARCHAR2(8200);
  7  BEGIN
  8  SELECT name,
  9        LISTAGG(pcb,'') WITHIN GROUP(ORDER BY pcb),
10        LISTAGG(plz,'') WITHIN GROUP(ORDER BY plz) ||
11        LISTAGG(ort,'') WITHIN GROUP(ORDER BY ort) ||
12        LISTAGG(str,'') WITHIN GROUP(ORDER BY str)
13      INTO l_name,l_pcbid,l_adresse
14      FROM(
15          SELECT '<name>'||name1||'</name><vname>'||name3||'/vname>' as name,
16            DECODE( LAG(plz,1,0) OVER (ORDER BY plz),plz,NULL,'<plz>'||plz||'</plz>'  ) AS plz,
17            DECODE( LAG(ort,1,0) OVER (ORDER BY ort),ort,NULL,'<ort>'||ort||'</ort>'  ) AS ort,
18            DECODE( LAG(str,1,0) OVER (ORDER BY str),str,NULL,'<str>'||str||'</str>'  ) AS str,
19            DECODE( LAG(pp.pcbid,1,0) OVER (ORDER BY pp.pcbid),pp.pcbid,NULL,'<pcb>'||pp.pcbid||'</pcb>'  ) AS pcb
20          FROM tbl0100anschrift an,
21            tbl0100person pers,
22            tbl2000pcbperson pp
23          WHERE pers.persno=an.persno
24            AND pers.rowid=p_rid
25            AND pers.persno=pp.persno
26            AND an.persno=pp.persno
27          ) adr
28      WHERE plz || ort || str ||pcb IS NOT NULL
29  GROUP BY name;
30    --
31    l_xmlDoc:=l_name||l_adresse||l_pcbid;
32    DBMS_LOB.WRITEAPPEND (p_clob,length(l_xmlDoc),l_xmlDoc);
33  END;
34  /
Procedure created.
SCOTT@orcl12c> SHOW ERRORS
No errors.
SCOTT@orcl12c> DECLARE
  2    v_clob  CLOB;
  3  BEGIN
  4    FOR r IN (SELECT ROWID rid FROM tbl0100person) LOOP
  5      DBMS_LOB.CREATETEMPORARY (v_clob, TRUE);
  6      names_proc (r.rid, v_clob);
  7      DBMS_OUTPUT.PUT_LINE (v_clob);
  8      DBMS_LOB.FREETEMPORARY (v_clob);
  9    END LOOP;
10  END;
11  /
<name>Huber</name><vname>Astrid/vname><plz></plz><ort></ort><str></str><pcb>1006
498200</pcb><pcb>8553001101</pcb><pcb>8553002201</pcb>
PL/SQL procedure successfully completed.
SCOTT@orcl12c> begin
  2    ctx_ddl.create_preference(preference_name=>'name_store',object_name=>'USER_DATASTORE');
  3    ctx_ddl.set_attribute
  4      (preference_name=>'name_store',
  5        attribute_name=>'procedure',
  6        attribute_value=>'names_proc');
  7    ctx_ddl.create_section_group ('name_sg', 'basic_section_group');
  8    ctx_ddl.add_field_section ('name_sg', 'name', 'name');
  9    ctx_ddl.add_field_section ('name_sg', 'vname', 'vname');
10    ctx_ddl.add_field_section ('name_sg', 'pcb', 'pcb');
11  end;
12  /
PL/SQL procedure successfully completed.
SCOTT@orcl12c> CREATE INDEX name_ix1 ON tbl0100person (name1)
  2  INDEXTYPE IS CTXSYS.CONTEXT
  3  PARAMETERS
  4    ('DATASTORE    name_store
  5      SECTION GROUP    name_sg')
  6  /
Index created.
SCOTT@orcl12c> SELECT token_text FROM dr$name_ix1$i
  2  /
TOKEN_TEXT
1006498200
8553001101
8553002201
ASTRID
HUBER
VNAME
6 rows selected.
SCOTT@orcl12c> select * from tbl0100person
  2  where  contains
  3            (name1,
  4            'huber within name and astrid within vname and 8553002201 within pcb')>0
  5  /
    PERSNO NAME1          NAME3
        1 Huber          Astrid
1 row selected.
SCOTT@orcl12c> select * from tbl0100person
  2  where  contains
  3            (name1,
  4            'huber within name and astrid within vname and 8553001101 within pcb')>0
  5  /
    PERSNO NAME1          NAME3
        1 Huber          Astrid
1 row selected.
SCOTT@orcl12c> select * from tbl0100person
  2  where  contains
  3            (name1,
  4            'huber within name and astrid within vname and 1006498200 within pcb')>0
  5  /
    PERSNO NAME1          NAME3
        1 Huber          Astrid
1 row selected.