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Home » Modeling » EMF » Leading whitespace is not removed when parsing list element(When parsing an XML document with leading whitespace in a list, the document is considered illegal)
Leading whitespace is not removed when parsing list element [message #1207169] Sun, 24 November 2013 12:26 Go to next message
Jan Schoubo is currently offline Jan SchouboFriend
Messages: 13
Registered: May 2010
Location: Stilling, Denmark
Junior Member
Hi,

I believe there is still a problem with parsing list elements - leading whitespace is not skipped.

This problem is very similar to http://www.eclipse.org/forums/index.php?t=msg&goto=846629
and the resulting bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=376967 .

The solution was to change pattern used in the EFactoryImpl method split method
from "[ \t\n\r\f]" to "[ \t\n\r\f]+" - however, Pattern.split will return a leading
empty String, if the pattern is found in the beginning of the target string,
so the solution is not quite adequate?

Please see example below, and the enclosed Eclipse project.

I have validated the XSD/XML successfully at http://www.freeformatter.com/xml-validator-xsd.html

EMF is 2.9.1.v20130902-0605 and Eclipse is 4.3.1.M20130911-1000, under Linux Mint 14 (64 bit).

- Jan


XSD:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.example.org/testmodel/" targetNamespace="http://www.example.org/testmodel/">

<xs:simpleType name="ListOfFloats">
<xs:list itemType="xs:float" />
</xs:simpleType>

<xs:simpleType name="float2x2">
<xs:restriction base="ListOfFloats">
<xs:minLength value="4" />
<xs:maxLength value="4" />
</xs:restriction>
</xs:simpleType>

<xs:element name="matrix">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="float2x2">
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>

<xs:element name="root">
<xs:complexType>
<xs:sequence>
<xs:element ref="matrix" minOccurs="1" maxOccurs="unbounded" />
</xs:sequence>
</xs:complexType>
</xs:element>

</xs:schema>


XML - first and second matrix is ok, third and fourth fails validation:

<?xml version="1.0" encoding="UTF-8"?>
<root
xmlns="http://www.example.org/testmodel/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.example.org/testmodel/ ../../model/testmodel.xsd ">

<matrix>1.0 0.0 0.0 1.0</matrix>

<matrix>1.1 0.1
0.1 1.1
</matrix>

<matrix> 1.2 0.2
0.2 1.2
</matrix>

<matrix>
1.3 0.3
0.3 1.3
</matrix>
</root>


Jan Schoubo, schoubo reasoning
Re: Leading whitespace is not removed when parsing list element [message #1207478 is a reply to message #1207169] Sun, 24 November 2013 16:03 Go to previous messageGo to next message
Ed Merks is currently offline Ed MerksFriend
Messages: 30688
Registered: July 2009
Senior Member
Jan,

Please open a bugzilla.

On 24/11/2013 1:26 PM, Jan Schoubo wrote:
> Hi,
>
> I believe there is still a problem with parsing list elements - leading whitespace is not skipped.
>
> This problem is very similar to http://www.eclipse.org/forums/index.php?t=msg&goto=846629
> and the resulting bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=376967 .
>
> The solution was to change pattern used in the EFactoryImpl method split method
> from "[ \t\n\r\f]" to "[ \t\n\r\f]+" - however, Pattern.split will return a leading
> empty String, if the pattern is found in the beginning of the target string,
> so the solution is not quite adequate?
>
> Please see example below, and the enclosed Eclipse project.
>
> I have validated the XSD/XML successfully at http://www.freeformatter.com/xml-validator-xsd.html
>
> EMF is 2.9.1.v20130902-0605 and Eclipse is 4.3.1.M20130911-1000, under Linux Mint 14 (64 bit).
>
> - Jan
>
>
> XSD:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> xmlns="http://www.example.org/testmodel/" targetNamespace="http://www.example.org/testmodel/">
>
> <xs:simpleType name="ListOfFloats">
> <xs:list itemType="xs:float" />
> </xs:simpleType>
>
> <xs:simpleType name="float2x2">
> <xs:restriction base="ListOfFloats">
> <xs:minLength value="4" />
> <xs:maxLength value="4" />
> </xs:restriction>
> </xs:simpleType>
>
> <xs:element name="matrix">
> <xs:complexType>
> <xs:simpleContent>
> <xs:extension base="float2x2">
> </xs:extension>
> </xs:simpleContent>
> </xs:complexType>
> </xs:element>
>
> <xs:element name="root">
> <xs:complexType>
> <xs:sequence>
> <xs:element ref="matrix" minOccurs="1" maxOccurs="unbounded" />
> </xs:sequence>
> </xs:complexType>
> </xs:element>
>
> </xs:schema>
>
>
> XML - first and second matrix is ok, third and fourth fails validation:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <root
> xmlns="http://www.example.org/testmodel/"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://www.example.org/testmodel/ ../../model/testmodel.xsd ">
>
> <matrix>1.0 0.0 0.0 1.0</matrix>
>
> <matrix>1.1 0.1
> 0.1 1.1
> </matrix>
>
> <matrix> 1.2 0.2
> 0.2 1.2
> </matrix>
>
> <matrix>
> 1.3 0.3
> 0.3 1.3
> </matrix>
> </root>
>
Re: Leading whitespace is not removed when parsing list element [message #1207708 is a reply to message #1207478] Sun, 24 November 2013 18:44 Go to previous message
Jan Schoubo is currently offline Jan SchouboFriend
Messages: 13
Registered: May 2010
Location: Stilling, Denmark
Junior Member
Ok, I have created https://bugs.eclipse.org/bugs/show_bug.cgi?id=422416 - hope I got it right?

- Jan


Jan Schoubo, schoubo reasoning
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