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From "Vignesh Swaminathan" <vswam...@cordys.com>
Subject Parser error from DatabaseIO.read()
Date Tue, 14 Feb 2006 04:44:21 GMT
Hi,

Since I took a new update from the SVN yesterday, I have a parser error
popping when reading in a model from a file. This file is not hand
created by generated using DDLUtils. The model was written from a MySQL
5.1 database (cordyshr) and the test was to create a new database of the
same model but with different DB name (testdb). The code which gives the
parser error is,

public void readModelFromFile(String inputFile)
{
	DatabaseIO dbIO = new DatabaseIO();
	dbModel = dbIO.read(inputFile);
}

The parser error is,

Feb 14, 2006 10:05:07 AM org.apache.commons.digester.Digester error
SEVERE: Parse Error at line 1 column 29: Document root element
"database", must match DOCTYPE root "null".
org.xml.sax.SAXParseException: Document root element "database", must
match DOCTYPE root "null".
	at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXPar
seException(Unknown Source)
	at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknow
n Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unk
nown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unk
nown Source)
	at
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.rootElementS
pecified(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartE
lement(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement
(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.s
canStartElement(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$ContentDi
spatcher.scanRootElementHook(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$F
ragmentContentDispatcher.dispatch(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.s
canDocument(Unknown Source)
	at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unkn
own Source)
	at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unkn
own Source)
	at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
Source)
	at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unkno
wn Source)
	at
org.apache.commons.digester.Digester.parse(Digester.java:1704)
	at org.apache.ddlutils.io.DatabaseIO.read(DatabaseIO.java:146)
	at TestDDL.readModelFromFile(TestDDL.java:54)
	at TestDDL.main(TestDDL.java:137)
Feb 14, 2006 10:05:07 AM org.apache.commons.digester.Digester error
SEVERE: Parse Error at line 1 column 29: Document is invalid: no grammar
found.
org.xml.sax.SAXParseException: Document is invalid: no grammar found.
	at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXPar
seException(Unknown Source)
	at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknow
n Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unk
nown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unk
nown Source)
	at
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartE
lement(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement
(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.s
canStartElement(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$ContentDi
spatcher.scanRootElementHook(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$F
ragmentContentDispatcher.dispatch(Unknown Source)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.s
canDocument(Unknown Source)
	at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unkn
own Source)
	at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unkn
own Source)
	at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
Source)
	at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unkno
wn Source)
	at
org.apache.commons.digester.Digester.parse(Digester.java:1704)
	at org.apache.ddlutils.io.DatabaseIO.read(DatabaseIO.java:146)
	at TestDDL.readModelFromFile(TestDDL.java:54)
	at TestDDL.main(TestDDL.java:137)

The parser error is suppressed with the following change,

public void readModelFromFile(String inputFile)
{
	DatabaseIO dbIO = new DatabaseIO();
	dbIO.setValidateXml(false);
	dbModel = dbIO.read(inputFile);
}

I have attached the input file containing the schema, this does not
prevent me going forward as I observed that even if I do not set
validate off, the parser error does not affect the reading in of the
model, the code to create a new database just works fine.

Regards
Vignesh Swaminathan

<vignesh/>
"Winning solutions find the right balance between market needs and
technical needs"


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