InsertXML()

Question

Hi!
I'm inserting XML file into DB using OracleXMLSave - insertXML().
I wonder if there is limit of number of columns to handle at once.
When I pass a rowset with about 150 columns of data to insertXML(), DB(Oracle) stops and do nothing. No error messages.
Here is a segment of my code :
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
conn = DriverManager.getConnection(DB_URL, DB_USERID, DB_PASSWORD);
xs = new OracleXMLSave(conn,tableName);
xs.setIgnoreCase(true);
xs.setDateFormat("dd-MMM-yyyy");
rValue = xs.insertXML(xmlDoc);
xs.close();
conn.commit();
conn.close();
The table, which data is inserted into, has about 200 columns, but generally 100 columns of them are inserted from XML doc.
It means, in most cases, it works fine.
But, I have to be able to deal with 150 columns or more.
Any idea?
null

Answer 1

insertXML() wants an XML Document as an argument.
You can give it:
A DOM Document object (in-memory, already parsed).
An inputstream (useful if you're getting the XML from a file or servlet request or something)
Where you are currently "printing tags" into a printwriter to "make" your XML, you can do one of two things:
(1) Change your code to create Elements
instead of printing the XML tag
representation of the Elements.
XMLDocument newDoc = new XMLDocument();
Element docElt = newDoc.createElement("DATASET");
newDoc.appendChild(docElt);
// Then for each time you would have
// printing a <DATA>value</DATA>
// you do instead:
Element newDataElt = newDoc.createElement("DATA");
newDataElt.appendChild(newDoc.createTextNode( valueVariable );
Then you can give "newDoc" to insertXML().
(2) You can print your document as text
into a big string, and then
create a ByteArrayInputStream on the
string to pass to insertXML()
ByteArrayInputStream bais = new ByteArrayInputStream(yourXMLString.getBytes());
insertXML(bais);
Number 1 should be more efficient because
you avoid parsing.