Null values cause BLOB corruption
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Key: JCR-551
URL: http://issues.apache.org/jira/browse/JCR-551
Project: Jackrabbit
Issue Type: Bug
Components: core
Affects Versions: 1.0.1
Reporter: Jaka Jaksic
Priority: Critical
Using the file persistence manager (not sure about other managers) there is a
way to produce a corrupt property BLOB, which can then be neither read nor
modified nor deleted. Once this happens, Jackrabbit starts throwing "failed to
read property state" exceptions every time it hits that property, and
essentially becomes useless until the BLOB is fixed (e.g. with a hex editor).
The problem is caused by passing a null value to a setProperty overload other
than setProperty(String, Value).
For example:
node.setProperty("corruptionTest", null, PropertyType.STRING);
This produces a corrupt BLOB (the data in the BLOB indicates value count = 1,
then the BLOB ends) instead of removing the property or at least throwing an
exception.
setProperty(String, Value) properly removes the property if a null is passed to
it, as documented in the JCR spec. I think other overloads should do the same,
although this is not explicitly stated in the spec. In any case they should not
corrupt repository data.
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