[ http://issues.apache.org/jira/browse/JCR-325?page=all ]
Stefan Guggisberg resolved JCR-325:
-----------------------------------
Resolution: Fixed
document view xml serialization is *not* guaranteed to be roundtrippable
as some of the information, such as property type and multi-value flag, is lost.
the only failsafe way of handling multi-valued properties is to skip them
on export (see "6.4.2.5 Multi-value Properties", jsr-170 specification).
this is probably not desirable from a user perspective.
the following pragmatic approach has been chosen to workaround this issue:
document view export:
------------------------------
- multi-value properties are exported space-separated, with a leading line-feed
(
)
as a 'multi-valued'-hint; spaces within a value are encoded as _x0020_;
e.g. ["john doe","donald duck"] => "
john_x0020_doe donald_x0020_duck"
- single-value properties are exported without encoding contained spaces as
_x0020_
e.g. "Hello, World!" => "Hello, World!"
document view import:
------------------------------
- attribute values starting with 
 (line-feed) are assumed to represent
multiple values,
delimited by spaces; _x0020_ within values are decoded to spaces
e.g. "
john_x0020_doe donald_x0020_duck" => ["john doe","donald duck"]
- all other attribute values are considered to be single values; no space
decoding
is performed.
e.g. "Hello, World!" => "Hello, World!"
fixed in svn r384197
> docview roundtripping does not work with multivalue non-string properties
> -------------------------------------------------------------------------
>
> Key: JCR-325
> URL: http://issues.apache.org/jira/browse/JCR-325
> Project: Jackrabbit
> Type: Bug
> Components: core
> Versions: 0.9
> Environment: jackrabbit r379292
> Reporter: Tobias Bocanegra
> Assignee: Stefan Guggisberg
>
> when exporting a multivalue property with docview, the property values are
> serialized to a space delimited list in the xml attributes:
> for example:
> <?xml version="1.0" encoding="UTF-8"?>
> .
> .
> <testNode
> jcr:primaryType="refTest"
> refs="b5c12524-5446-4c1a-b024-77f623680271
> 7b4d4e6f-9515-47d8-a77c-b4beeaf469bc"
> />
> the refTest nodetype was:
> [refTest]
> - refs (reference) multiple
> importing this docview fails with: javax.jcr.ValueFormatException: not a
> valid UUID format
> this is due to the fact, that the space delimited list is not exploded
> anymore. actually this code is commented:
> org.apache.jackrabbit.core.xml.DocViewImportHandler, lines 191 - 200:
> /*
> // @todo should attribute value be interpreted as LIST type
> (i.e. multi-valued property)?
> String[] strings = Text.explode(attrValue, ' ', true);
> propValues = new Value[strings.length];
> for (int j = 0; j < strings.length; j++) {
> // decode encoded blanks in value
> strings[j] = Text.replace(strings[j], "_x0020_", " ");
> propValues[j] = InternalValue.create(strings[j]);
> }
> */
> i haven't tested, but i assume this also fails for all other non-string
> property types.
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