Writing a clean, formatted xml file
Am reworking an xml file with two types entities both with the name "item", one is a base item and the second is an item referred to by the base items.
My task is to replace the child "<mention_ref item_id=xxx/>" with the actual item that xxx refers to, rename that element to "mention_ref" and delete the element I moved. All this part works well.
Hoowever, when I write it out it's not formatted and there a empty lines where the missing elements are.
How can I fix this?
Jim
Tried all that and no change in the output, see below:
<item id="_491" name="$5,000" norm="$_5_,_000" ontology="entity:numeric:money" type="equiv">
<mention_ref equiv_id="_491" head="2115" id="_317" name="$5,000" norm="$_5_,_000" ontology="entity:numeric:money" tail="2121" type="mention">
<attribute name="mention_type" value="name"/>
<attribute name="currency" value="usd"/>
<attribute name="norm" value="5000"/>
</mention_ref>
<attribute name="mention_type" value="name"/>
<attribute head="2115" name="name" tail="2121" value="$5,000"/>
<attribute name="currency" value="usd"/>
<attribute name="norm" value="5000"/>
</item>
<item id="_473" name="Associated Press" norm="associated_press" ontology="entity:organization:company" type="equiv">
<mention_ref equiv_id="_473" head="2330" id="_333" name="Associated Press" norm="associated_press" ontology="entity:organization:company" tail="2346" type="mention">
<attribute name="confidence" value="4"/>
<attribute name="mention_type" value="name"/>
</mention_ref>
<mention_ref equiv_id="_473" head="1557" id="_337" name="AP" norm="ap" ontology="entity:organization:company" tail="1559" type="mention">
<attribute name="confidence" value="2"/>
<attribute name="mention_type" value="name"/>
</mention_ref>
<mention_ref equiv_id="_473" head="816" id="_336" name="AP" norm="ap" ontology="entity:organization:company" tail="818" type="mention">
<attribute name="confidence" value="2"/>
<attribute name="mention_type" value="name"/>
</mention_ref>
<mention_ref equiv_id="_473" head="475" id="_332" name="Associated Press" norm="associated_press" ontology="entity:organization:company" tail="491" type="mention">
<attribute name="confidence" value="4"/>
<attribute name="mention_type" value="name"/>
</mention_ref>
<mention_ref equiv_id="_473" head="2326" id="_472" name="The Associated Press" norm="the_associated_press" ontology="entity:organization:company" tail="2346" type="mention">
<attribute name="mention_type" value="extended_name"/>
</mention_ref>
<mention_ref equiv_id="_473" head="471" id="_470" name="The Associated Press" norm="the_associated_press" ontology="entity:organization:company" tail="491" type="mention">
<attribute name="mention_type" value="extended_name"/>
</mention_ref>
<attribute name="confidence" value="4"/>
<attribute name="confidence" value="2"/>
<attribute head="2326" name="extended_name" tail="2346" value="The Associated Press"/>
<attribute head="471" name="extended_name" tail="491" value="The Associated Press"/>
<attribute name="mention_type" value="name"/>
<attribute name="mention_type" value="extended_name"/>
<attribute head="2330" name="name" tail="2346" value="Associated Press"/>
<attribute head="1557" name="name" tail="1559" value="AP"/>
<attribute head="816" name="name" tail="818" value="AP"/>
<attribute head="475" name="name" tail="491" value="Associated Press"/>
</item>it is valid, but not formatted.
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Document to formatted XML file
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Hi,
We have a table by name clarity_response_log and content of the column(Response_file) is BLOB and we have xml file or xml content in that column. Most probably the column or table may be having more than 5 records and hence we need to read the corresponding blob content and write to an external file.
CREATE TABLE CLARITY_RESPONSE_LOG
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Values
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(REQUEST_CODE, RESPONSE_FILE, DATE_CRATED, CREATED_BY, UPDATED_BY, DATE_UPDATED)
Values
(9, '<?xml version="1.0" encoding="UTF-8"?><xml-response><phone-number>1212121212</tracking-number></xml-response>', TO_DATE('09/23/2010 09:01:34', 'MM/DD/YYYY HH24:MI:SS'), 1, 1, '23-SEP-10');THe corresponding proc for reading the data and writing the data to an external file goes something like this
SET serveroutput ON
DECLARE
vstart NUMBER := 1;
bytelen NUMBER := 32000;
len NUMBER;
my_vr RAW (32000);
x NUMBER;
l_output UTL_FILE.FILE_TYPE;
BEGIN
-- define output directory
l_output :=
UTL_FILE.FOPEN ('CWFSTORE_RESPONCE_XML', 'extract500.txt', 'wb', 32760);
vstart := 1;
bytelen := 32000;
---get the Blob locator
FOR rec IN (SELECT response_file vblob
FROM clarity_response_log
WHERE TRUNC (date_crated) = TRUNC (SYSDATE - 1))
LOOP
--get length of the blob
len := DBMS_LOB.getlength (rec.vblob);
DBMS_OUTPUT.PUT_LINE (len);
x := len;
---- If small enough for a single write
IF len < 32760
THEN
UTL_FILE.put_raw (l_output, rec.vblob);
UTL_FILE.FFLUSH (l_output);
ELSE
-------- write in pieces
vstart := 1;
WHILE vstart < len AND bytelen > 0
LOOP
DBMS_LOB.READ (rec.vblob, bytelen, vstart, my_vr);
UTL_FILE.put_raw (l_output, my_vr);
UTL_FILE.FFLUSH (l_output);
---------------- set the start position for the next cut
vstart := vstart + bytelen;
---------- set the end position if less than 32000 bytes
x := x - bytelen;
IF x < 32000
THEN
bytelen := x;
END IF;
UTL_FILE.NEW_LINE (l_output);
END LOOP;
----------------- --- UTL_FILE.NEW_LINE(l_output);
END IF;
END LOOP;
UTL_FILE.FCLOSE (l_output);
END;The above code works well and all the records or xml contents are being written simultaneously adjacent to each other but we each records must be written to a new line or there must be a line gap or a blank line between any two records
the code which I get is as follow all all xml data comes on a single line
<?xml version="1.0" encoding="ISO-8859-1"?><emp><empno>7369</empno><ename>James</ename><job>Manager</job><salary>1000</salary></emp><?xml version="1.0" encoding="ISO-8859-1"?><emp><empno>7370</empno><ename>charles</ename><job>President</job><salary>500</salary></emp>But the code written to an external file has to be something like this.
<?xml version="1.0" encoding="ISO-8859-1"?>
<emp>
<empno>7369</empno>
<ename>James</ename>
<job>Manager</job>
<salary>1000</salary>
</emp>
<?xml version="1.0" encoding="ISO-8859-1"?>
<emp>
<empno>7370</empno>
<ename>charles</ename>
<job>President</job>
<salary>500</salary>
</emp>Please adviceWhat was wrong with the previous answers given on your other thread:
Export Blob data to text file(-29285-ORA-29285: file write error)
If there's a continuing issue, stay with the same thread, don't just ask the same question again and again, it's really Pi**es people off and causes confusion as not everyone will be familiar with what answers you've already had. You're just wasting people's time by doing that.
As already mentioned before, convert your BLOB to a CLOB and then to XMLTYPE where it can be treated as XML and written out to file in a variety of ways including the way I showed you on the other thread.
You really seem to be struggling to get the worst possible way to work. -
Format XML data when writing to a file
Hi,
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transformer.transform(source, result);
output.flush();
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Is there a way to achieve this?
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2) How do I avoid this character?Also, I am planning on using xpath in conjunction with DOM. However I read on one of the websites not to use too many xpath queries. I am using jdk 1.5.
Is it tight. My code might have to be run many times. Is the following ok?
or should I eliminate xpath and do my own traversing. I am concerned about runtime performance if I have to continue to update the xml file frequently.
public Element getMatchingNode(MyAttributes attr) throws Exception {
try {
File myFile = new File(XMLFile);
if (myFile.exists()) {
System.out.println(XMLFile + " File exists");
XPathFactory factory = XPathFactory.newInstance();
XPath xPath = factory.newXPath();
InputSource inputSource =
new InputSource(new FileInputStream(myFile));
String matchingString = this.getMatchingString(attr);
Element module =
(Element)xPath.evaluate("/" + TEST_TAG +
"/" +
TEST_TAG2 +
"/" +
DETAIL +
matchingString,
inputSource,
XPathConstants.NODE);
return module;
} else
return null;
} catch (Exception x) {
throw x;
private String getMatchingString(MyAttributes attrs){
StringBuffer buffer = new StringBuffer();
for (Enumeration e=attrs.keys(); e.hasMoreElements();){
String attribute = (String)e.nextElement();
String value = attrs.get(attribute);
buffer.append("[@" + attribute + "=" + "'" + value + "']");
return buffer.toString();
} -
"PLS-00172: string literal too long" When Writing XML file into a Table
Hi.
I'm using DBMS_XMLStore to get a XML file into a db table. See the example below, I'm using that for my PL/SQL format. Problem is that because there're too many XML elements that I use in "xmldoc CLOB:= ...", I get "PLS-00172: string literal too long" error.
Can someone suggest a workaround?
THANKS!!!
DECLARE
insCtx DBMS_XMLStore.ctxType;
rows NUMBER;
xmldoc CLOB :=
'<ROWSET>
<ROW num="1">
<EMPNO>7369</EMPNO>
<SAL>1800</SAL>
<HIREDATE>27-AUG-1996</HIREDATE>
</ROW>
<ROW>
<EMPNO>2290</EMPNO>
<SAL>2000</SAL>
<HIREDATE>31-DEC-1992</HIREDATE>
</ROW>
</ROWSET>';
BEGIN
insCtx := DBMS_XMLStore.newContext('scott.emp'); -- get saved context
DBMS_XMLStore.clearUpdateColumnList(insCtx); -- clear the update settings
-- set the columns to be updated as a list of values
DBMS_XMLStore.setUpdateColumn(insCtx,'EMPNO');
DBMS_XMLStore.setUpdateColumn(insCtx,'SAL');
DBMS_XMLStore.setUpdatecolumn(insCtx,'HIREDATE');
-- Now insert the doc.
-- This will only insert into EMPNO, SAL and HIREDATE columns
rows := DBMS_XMLStore.insertXML(insCtx, xmlDoc);
-- Close the context
DBMS_XMLStore.closeContext(insCtx);
END;
/You ask where am getting the XML doc. Well, am not
getting the doc itself.I either don't understand or I disagree. In your sample code, you're certainly creating an XML document-- your local variable "xmldoc" is an XML document.
DBMS_XMLSTORE package needs
to know the canonical format and that's what I
hardcoded. Again, I either don't understand or I disagree... DBMS_XMLStore more or less assumes the format of the XML document itself-- there's a ROWSET tag, a ROW tag, and a then whatever column tags you'd like. You can override what tag identifies a row, but the rest is pretty much assumed. Your calls to setUpdateColumn identifies what subset of column tags in the XML document you're interested in.
Later in code I use
DBMS_XMLStore.setUpdateColumn to specify which
columns are to be inserted.Agreed.
xmldoc CLOB :=
'<ROWSET>
<ROW num="1">
<KEY_OLD> Smoker </KEY_OLD>
<KEY_NEW> 3 </KEY_NEW>
<TRANSFORM> Specified </TRANSFORM>
<KEY_OLD> Smoker </KEY_OLD>
<VALUEOLD> -1 </VALUEOLD>
EW> -1 </VALUENEW>
<DESCRIPTION> NA </DESCRIPTION>
</ROW>
ROWSET>';This is your XML document. You almost certainly want to be reading this from the file system and/or have it passed in from another procedure. If you hard-code the XML document, you're limited to a 32k string literal, which is almost certainly causing the error you were reporting initially.
As am writing this I'm realizing that I'm doing this
wrong, because I do need to read the XML file from
the filesystem (but insert the columns
selectively)...What I need to come up with is a proc
that would grab the XML file and do inserts into a
relational table. The XML file will change in the
future and that means that all my 'canonical format'
code will be broken. How do I deal with anticipated
change? Do I need to define/create an XML schema in
10g if am just inserting into one relat. table from
one XML file?What does "The XML file will change in the future" mean? Are you saying that the structure of the XML document will change? Or that the data in the XML document would change? Your code should only need to change if the structure of the document changes, which should be exceptionally uncommon and would only be an issue if you're adding another column that you want to work with, which would necessitate code changes.
I found an article where the issue of changing XML
file is dealt by using a XSL file (that's where I'd
define the 'canonical format'), but am having a
problem with creating one, because the source XML is
screwed up in terms of the format:
it's not <x> blah </x>
<x2> blah </x2>
x2="blah" x3="blah> ...etc
Can you point me in the right direction, please?You can certainly use something like the DBMS_XSLProcessor package to transform whatever XML document you have into an XML document in an appropriate format for the XMLStore package and pass that transformed XML document into something like your sample procedure rather than defining the xmldoc local variable with a hard-coded document. Of course, you'd need to write appropriate XSL code to do the actual transform.
Justin
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