Subject: [xsl] java.lang.OutOfMemory Error When Transforming a Flat XML Document into Detailed XML Document via XSL From: "David Haines" <david.f.haines@xxxxxxxx> Date: Tue, 13 Nov 2001 16:08:22 -0600 |
We are developing a process that converts a fixed-length flat file into XML. As of this point, I have performed the following steps via Java and XSL: 1. Created a Java class to take a flat file and create a flat XML file. For instance, the flat XML file would look like: <ROWSET> <ROW>flat file record 1</ROW> <ROW>flat file record 2</ROW> ... </ROWSET> 2. Created an XSL stylesheet that would create a detailed XML document (see below) based on the flat XML file. <ROWSET> <ROW> <RECORD_ID>0342323</RECORD_ID> <SUBMISSION_DATE>03/22/2001</SUBMISSION_DATE> </ROW> <ROW> <RECORD_ID>0342324</RECORD_ID> <SUBMISSION_DATE>03/23/2001</SUBMISSION_DATE> </ROW> </ROWSET> 3. Created a Java class to take the Flat XML file in (1) and transform it to full XML based on the XSL document in (2). public void convert() { try { javax.xml.transform.TransformerFactory tFactory = javax.xml.transform.TransformerFactory.newInstance(); javax.xml.transform.Transformer transformer = tFactory.newTransformer(new javax.xml.transform.stream.StreamSource(xslDoc)); transformer.transform(new javax.xml.transform.stream.StreamSource(inXML), new javax.xml.transform.stream.StreamResult( new java.io.FileOutputStream(outXML))); } catch (Exception ex) { ex.printStackTrace(); } } 4. When I run execute this Java class using a large file (e.g., 22 Mb), it will process until it hits a java.lang.OutOfMemory error. Mind you that it creates approximately half its task of creating of the full XML document before hitting the OutOfMemory error. Any thoughts on how to process large files using XSL transformation? David Haines david.f.haines@xxxxxxxx XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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