I have come across a repeatable error and enclose the test case.
When the following xml is validated with a ValidatingStreamReader it
causes an SOE.
If the sample string is shorter, this does not happen. With more complex
schemas, the string does not have to be as long to still cause an SOE.
I have not yet determined whether the complexity of the pattern is a factor.
Increasing the size of the stack using "java -Xss64M" does prevent this
issue.
This only happens in Windows, Linux does not have this behaviour. This
does not happen on any platform in java 5.
Note there were changes in java6 to the way stack sizes are implemented.
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6316197
I'm not sure if this is really a bug in xmlbeans since it does work on
other platforms... is there any reason why it would use more stack space
on windows? Is the default stack size different on windows and linux?
Thanks for your help
See stack trace below:
org.apache.xmlbeans.impl.regex.RangeToken.match(line 481)
org.apache.xmlbeans.impl.regex.RegularExpression.matchString(line 1673)
org.apache.xmlbeans.impl.regex.RegularExpression.matchString(line 1872)
org.apache.xmlbeans.impl.regex.RegularExpression.matchString(line 1872)
org.apache.xmlbeans.impl.regex.RegularExpression.matchString(line 1872)
org.apache.xmlbeans.impl.regex.RegularExpression.matchString(line 1872)
...
--
Chris
HMGCC
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import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.logging.Level;
import javax.xml.stream.FactoryConfigurationError;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.xmlbeans.SchemaTypeLoader;
import org.apache.xmlbeans.XmlBeans;
import org.apache.xmlbeans.XmlError;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;
import org.apache.xmlbeans.XmlOptions;
import org.apache.xmlbeans.impl.validator.ValidatingXMLStreamReader;
/**
* SOETest.java
* 27 Nov 2007
* $Log: $
*/
/**
* A class to demonstrate the StackOverflowError in Windows
* using Java 1.6.0_03
*
*/
public class SOETest {
/**
* A factory to get XML readers from, shared by package
*/
static final XMLInputFactory XIF = XMLInputFactory.newInstance();
private static File SCHEMA = new File("pattern.xsd");
private static InputStream XML;
/**
* @param args
* @throws IOException
* @throws XmlException
*/
public static void main(String[] args) throws IOException, XmlException
{
XML = new FileInputStream("pattern.xml");
// load schema
SchemaTypeLoader schemaLoader;
XmlObject schema = XmlObject.Factory.parse(SCHEMA,
(new XmlOptions()).setLoadMessageDigest());
//compile schema
ArrayList<XmlError> compErrors = new ArrayList<XmlError>();
XmlOptions schemaOptions = new
XmlOptions().setErrorListener(compErrors);
XmlObject[] schemas = new XmlObject[] { schema };
schemaLoader = XmlBeans.compileXsd(schemas, null,
schemaOptions);
boolean ok = true;
for (XmlError e : compErrors) {
switch (e.getSeverity()) {
case XmlError.SEVERITY_INFO:
// no need to log
break;
case XmlError.SEVERITY_WARNING:
break;
default:
ok=false;
}
}
if (!ok) {
throw new XmlException("Invalid schema, validation
aborted:"
+ SCHEMA.getName());
}
//prepare for validation
XmlOptions valOpts = new XmlOptions().setLoadLineNumbers();
ArrayList<XmlError> valErrors = new ArrayList<XmlError>();
valOpts.setErrorListener(valErrors);
//validate instance
ValidatingXMLStreamReader vsr = new ValidatingXMLStreamReader();
XMLStreamReader rdr=null;
try {
rdr = XIF.createXMLStreamReader(XML);
// advance to first start element.
while (!rdr.isStartElement()) {
rdr.next();
}
vsr.init(rdr, true, null, schemaLoader, valOpts,
valErrors);
while (vsr.hasNext()) {
vsr.next();
}
} catch (XMLStreamException e1) {
XML.close();
throw new XmlException("Error in XML Stream: ",e1);
} catch (FactoryConfigurationError e1) {
// Should never happen
throw new IOException("Factory Configuration Error: "
+ e1.getLocalizedMessage());
} catch (StackOverflowError soe) {
System.err.println("stack overflow caused on line:
"+vsr.getLocation().getLineNumber());
soe.printStackTrace();
throw soe;
}
finally {
try {
vsr.close();
if (rdr!=null) {
rdr.close();
}
} catch (XMLStreamException xe) {
System.err.println("Error closing XML Stream
reader: "+xe.getLocalizedMessage());
}
XML.close();
}
}
}
<?xml version="1.0" encoding="UTF-8"?>
<regex xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation="O:\cc\FFELs_5_int\FFELs\test\xml\pattern.xsd">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</regex>
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:element name="regex">
<xs:simpleType>
<xs:restriction base="HeaderInfo">
<xs:maxLength value="10000"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:simpleType name="HeaderInfo">
<xs:annotation>
<xs:documentation>
This type is used to restrict various header information to HeaderInfo
characters, digits, spaces (including CR and LF), slashes and punctuation.
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:pattern value="[a-zA-Z0-9\s\\\p{P}]*"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>
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