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https://issues.apache.org/jira/browse/TINKERPOP-848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17465852#comment-17465852
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ASF GitHub Bot commented on TINKERPOP-848:
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amatiushkin closed pull request #1485:
URL: https://github.com/apache/tinkerpop/pull/1485
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> Support default attribute values in GraphMLReader
> -------------------------------------------------
>
> Key: TINKERPOP-848
> URL: https://issues.apache.org/jira/browse/TINKERPOP-848
> Project: TinkerPop
> Issue Type: Improvement
> Components: io
> Affects Versions: 3.0.2-incubating
> Reporter: Pavel Klinov
> Priority: Trivial
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> Looking at the code of GraphMLReader I see that it doesn't support default
> values of attributes, which are allowed by the GraphML spec. This is a bit
> annoying especially if the input defines default values for attributes which
> are used for mandatory data, e.g. edge labels.
> One small example is the sample graph at [1]. "d_e" is the label attribute
> with a default value. There're <edge .. /> elements w/o body later in the
> document and reading those will throw a "java.lang.IllegalArgumentException:
> Label can not be null" exception (if the vendor considers edge labels
> mandatory).
> I'd personaly squash both keyIdMap and keyTypesMap into a single String ->
> AttrInfo map, where AttrInfo would contain information about the data
> attribute name, type, and the default value.
> [1] http://www.eecs.wsu.edu/~yyao/DirectedStudyI/Datasets/AS/sample.graphml
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