[jira] [Work started] (AXIOM-429) The result of OMContainer#addChild should not depend on the state (completeness) of the parent

["Andreas Veithen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AXIOM-429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on AXIOM-429 started by Andreas Veithen.

> The result of OMContainer#addChild should not depend on the state (completeness) of the parent
> ----------------------------------------------------------------------------------------------
>
>                 Key: AXIOM-429
>                 URL: https://issues.apache.org/jira/browse/AXIOM-429
>             Project: Axiom
>          Issue Type: Bug
>          Components: DOOM, LLOM
>    Affects Versions: 1.2.13
>            Reporter: Andreas Veithen
>            Assignee: Andreas Veithen
>             Fix For: 1.2.14
>
>
> Deferred parsing should be transparent to application code and the result (in terms of the content of the resulting document) of an operation on an Axiom tree should not depend on whether the tree is completely built or not. For OMContainer#addChild, this means that the new child should always be added as the last child. This implies that if the parent is not complete, it must be built first. In Axiom 1.2.13 this is not the case and addChild may insert the new child at an unexpected location. This can be demonstrated with the following simple code:
> OMElement parent = OMXMLBuilderFactory.createOMBuilder(new StringReader("<root><a/><b/></root>")).getDocumentElement();
> parent.addChild(factory.createOMElement("c", null));
> The resulting document would be <root><c/><a/><b/></root> instead of the expected <root><a/><b/><c/></root>.
> Fixing this requires some larger changes because the addChild method is also used (directly or indirectly) by the builder (which expects that the new child is added after the last built child).

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