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  1. Configuration Persistence Service
  2. CPS-139

Support multiple top-level data nodes when parsing JSON

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      The YANG specification allows multiple containers (lists etc) to be defined on a module's top level, however the eligible JSON data (having corresponding data sets) is not accepted. When data is parsed using YangUtils.parseJsonData(...) the exception like below occurs

      org.opendaylight.yangtools.yang.data.impl.schema.ResultAlreadySetException: Normalized Node result was already set.
 at org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult.setResult(NormalizedNodeResult.java:39) at org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResultBuilder.addChild(NormalizedNodeResultBuilder.java:57) at org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter.writeChild(ImmutableNormalizedNodeStreamWriter.java:305) at org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter.endNode(ImmutableNormalizedNodeStreamWriter.java:283) at org.opendaylight.yangtools.yang.data.util.ContainerNodeDataWithSchema.write(ContainerNodeDataWithSchema.java:37) at org.opendaylight.yangtools.yang.data.util.CompositeNodeDataWithSchema.write(CompositeNodeDataWithSchema.java:273) at org.opendaylight.yangtools.yang.data.util.AbstractNodeDataWithSchema.write(AbstractNodeDataWithSchema.java:74) at org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream.parse(JsonParserStream.java:170) at org.onap.cps.utils.YangUtils.parseJsonData(YangUtils.java:73)
...

      The data limitation by single top-level data node (despite it matches the model definition) seems artificial and not justified.

      Examples of both YANG definition and JSON data are attached.

        1. multiple-top.json
          0.2 kB
        2. multiple-top.yang
          0.5 kB

            Unassigned Unassigned
            rkashapov rkashapov
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