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https://issues.apache.org/jira/browse/DDLUTILS-196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Lipp updated DDLUTILS-196:
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Attachment: patch.txt
This patch is against 1.0.
Note that I have separated the decision if value can be written as an attribute
from the decision whether it requires uuencoding (the criteria are really
different).
> Text data dumped incorrectly
> ----------------------------
>
> Key: DDLUTILS-196
> URL: https://issues.apache.org/jira/browse/DDLUTILS-196
> Project: DdlUtils
> Issue Type: Bug
> Components: Core (No specific database)
> Affects Versions: 1.0
> Environment: Any
> Reporter: Michael Lipp
> Assignee: Thomas Dudziak
> Attachments: patch.txt
>
>
> DdlUtils does not properly preserve content through a dump/restore cycle if
> the content contains newlines.
> DdlUtils takes the following approach for dumping text content:
> (1) Write as value attribute, unless it cannot be written as such
> (2) Write as "plain" element content unless it cannot be written as such
> (3) Write as CDATA unless it cannot be written as such
> (4) Write uuencoded.
> Now when can a value not be written as attribute value? Easy: when there is
> no valid representation that reads back the same value. And here is the
> problem. The XML recommendation specifies something called "attribute value
> normalization" (http://www.w3.org/TR/xml/#AVNormalize). Due to this, white
> space characters except space (#xD, #xA, #x9) in attribute values are not
> read back in the same way as they are written.
> There are two ways to circumvent this: (a) write them as character references
> (e.g. 
) or (b) skip to method (2). Option (a) cannot be used here ,
> because it is impossible to write a "&" in an attribute value when you use
> XMLStreamWriter. The spec says: 'However the writeCharacters method is
> required to escape & , < and > For attribute values the writeAttribute
> method will escape the above characters plus "'
> (http://java.sun.com/webservices/docs/1.5/api/javax/xml/stream/XMLStreamWriter.html).
> You might expect that the XMLStreamWriter.writeAttribute should handle
> escaping of the whitespace characters (#xD, #xA, #x9), but if you read the
> spec carefully it does not say so. Leaves option (b).
> The attached patch fixes this problem.
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