Parsing XML containing name space - sql

Question

I am having problems with parsing XML containing name-space.
This is my XML structure (snipped, with modified data):
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02 ./camt.053.001.02.xsd">
<BkToCstmrStmt>
<Stmt>
<Ntry>
<Amt Ccy="EUR">0.0</Amt>
<CdtDbtInd>CCCC</CdtDbtInd>
<Sts>BBBB</Sts>
<BookgDt>
<Dt>2011-01-01</Dt>
</BookgDt>
<ValDt>
<Dt>2011-01-01</Dt>
</ValDt>
<AcctSvcrRef>325569685ASDAS</AcctSvcrRef>
<BkTxCd>
<Prtry>
<Cd>NOTPROVIDED</Cd>
</Prtry>
</BkTxCd>
<NtryDtls>
<TxDtls>
<Refs>
<EndToEndId>DD545454545-54545-54</EndToEndId>
<TxId>46545445G5GG54DD5S</TxId>
</Refs>
<RltdPties>
<Dbtr>
<Nm>TEST</Nm>
<PstlAdr>
<Ctry>JJ</Ctry>
<AdrLine>TEST ADD</AdrLine>
<AdrLine>TEST ADD2</AdrLine>
</PstlAdr>
</Dbtr>
<DbtrAcct>
<Id>
<IBAN>000000000000000</IBAN>
</Id>
</DbtrAcct>
<Cdtr>
<Nm>TEST NAME</Nm>
<PstlAdr>
<Ctry>JJ</Ctry>
<AdrLine>TEST ADD3</AdrLine>
<AdrLine>TEST ADD4</AdrLine>
</PstlAdr>
</Cdtr>
<CdtrAcct>
<Id>
<IBAN>22222222222222</IBAN>
</Id>
</CdtrAcct>
</RltdPties>
<Purp>
<Cd>IIII</Cd>
</Purp>
<RmtInf>
<Strd>
<CdtrRefInf>
<Ref>GG56565656565656</Ref>
</CdtrRefInf>
<AddtlRmtInf>TEST TEST 123</AddtlRmtInf>
</Strd>
</RmtInf>
<RltdDts>
<IntrBkSttlmDt>2011-01-01</IntrBkSttlmDt>
</RltdDts>
</TxDtls>
</NtryDtls>
</Ntry>
</Stmt>
</BkToCstmrStmt>
</Document>
This is the code i use that works if root element is without namespace ():
DECLARE
l_clob CLOB;
l_bfile BFILE := BFILENAME('XML_IMPORT', 'test_import.xml');
l_dest_offset INTEGER := 1;
l_src_offset INTEGER := 1;
l_bfile_csid NUMBER := 0;
l_lang_context INTEGER := 0;
l_warning INTEGER := 0;
l_xml xmltype;
BEGIN
DBMS_LOB.createtemporary (l_clob, TRUE);
DBMS_LOB.fileopen(l_bfile, DBMS_LOB.file_readonly);
DBMS_LOB.loadclobfromfile (
dest_lob => l_clob,
src_bfile => l_bfile,
amount => DBMS_LOB.lobmaxsize,
dest_offset => l_dest_offset,
src_offset => l_src_offset,
bfile_csid => l_bfile_csid ,
lang_context => l_lang_context,
warning => l_warning);
DBMS_LOB.fileclose(l_bfile);
l_xml := xmltype(l_clob);
BEGIN
FOR r IN (
SELECT ExtractValue(Value(p),'/Ntry/Amt/text()') as TEMP_COL1
,ExtractValue(Value(p),'/Ntry/Amt/#Ccy/text()') as TEMP_COL2
,ExtractValue(Value(p),'/Ntry/ValDt/Dt/text()') as TEMP_COL3
,ExtractValue(Value(p),'/Ntry/BookgDt/Dt/text()') as TEMP_COL4
FROM TABLE(XMLSequence(Extract(l_xml,'/Document/BkToCstmrStmt/Stmt/Ntry'))) p
)
LOOP
dbms_output.put_line('Some value 1: ' || r.TEMP_COL1);
dbms_output.put_line('Some value 2: ' || r.TEMP_COL2);
dbms_output.put_line('Some value 3: ' || r.TEMP_COL3);
dbms_output.put_line('Some value 4: ' || r.TEMP_COL4);
END LOOP;
END;
END;
I would like to know how to modify my code to work with name space.
Google provided few examples but so far i had no luck implementing them into my solution.

Answer 1

I believe you need to pass the namespace to both the Extract() and ExtractValue() functions e.g.
FOR r IN (
SELECT ExtractValue(Value(p),'/Ntry/Amt/text()', 'xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02"') as TEMP_COL1
,ExtractValue(Value(p),'/Ntry/Amt/#Ccy','xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02"') as TEMP_COL2
,ExtractValue(Value(p),'/Ntry/ValDt/Dt/text()','xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02"') as TEMP_COL3
,ExtractValue(Value(p),'/Ntry/BookgDt/Dt/text()','xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02"') as TEMP_COL4
FROM TABLE(XMLSequence(Extract(l_xml,'/Document/BkToCstmrStmt/Stmt/Ntry', 'xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02"'))) p
)
LOOP
dbms_output.put_line('Some value 1: ' || r.TEMP_COL1);
dbms_output.put_line('Some value 2: ' || r.TEMP_COL2);
dbms_output.put_line('Some value 3: ' || r.TEMP_COL3);
dbms_output.put_line('Some value 4: ' || r.TEMP_COL4);
END LOOP;
I don't think there is a way to specify a default namespace for the ExtractValue function, so my personal preference would be to do something like this instead which avoids repeatedly declaring the namespace:
FOR r IN (
SELECT p.temp_col1,
p.temp_col2,
p.temp_col3,
p.temp_col4
FROM xmltable(
--define a default namespace to be used for all values
xmlnamespaces(
DEFAULT 'urn:iso:std:iso:20022:tech:xsd:camt.053.001.02'
),
--define an xpath expression for the values you want to extract
'/Document/BkToCstmrStmt/Stmt/Ntry'
--pass the xml type in here
PASSING l_xml
--declare the columns you would like to extract and the formats they are expected to be in
COLUMNS
temp_col1 VARCHAR2(128) path '/Ntry/Amt/text()',
temp_col2 VARCHAR2(128) path '/Ntry/Amt/#Ccy',
temp_col3 VARCHAR2(128) path '/Ntry/ValDt/Dt/text()',
temp_col4 VARCHAR2(128) path '/Ntry/BookgDt/Dt/text()'
) p
)
LOOP
dbms_output.put_line('Some value 1: ' || r.temp_col1);
dbms_output.put_line('Some value 2: ' || r.temp_col2);
dbms_output.put_line('Some value 3: ' || r.temp_col3);
dbms_output.put_line('Some value 4: ' || r.temp_col4);
END LOOP;