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Date: Mon, 12 Mar 2007 00:06:09 -0700 (PDT)
From: "Eric Norman (JIRA)" <jira@apache.org>
To: dev@jackrabbit.apache.org
Subject: [jira] Updated: (JCR-784) NodeType.canAddProperty(key, BinaryValue)
 consumes the InputStream making it unusable for setting the property
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     [ https://issues.apache.org/jira/browse/JCR-784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Norman updated JCR-784:
----------------------------

    Affects Version/s: 1.2.3

> NodeType.canAddProperty(key, BinaryValue) consumes the InputStream making it unusable for setting the property
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: JCR-784
>                 URL: https://issues.apache.org/jira/browse/JCR-784
>             Project: Jackrabbit
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.2.3
>         Environment: Any
>            Reporter: Eric Norman
>            Priority: Minor
>
> When checking if a binary property can be added to a given node type, the input stream inside the BinaryValue object is consumed, making the subsequent call to setProperty(..) not work because the stream has been positioned at the end of the input stream.
> The stream is consumed by the following line in NodeTypeImpl.canSetProperty(..)
>             // create InternalValue from Value and perform
>             // type conversion as necessary
>             InternalValue internalValue = InternalValue.create(value, targetType,
>                     nsResolver);
> The internalValue object becomes a BlobFileValue that consumes the input stream in it's constructor.
> Expected:
> The canAddProperty decision should be made without consuming the input stream in the Value object.
> Example Code:
> Node targetNode; //get node from somewhere
> InputStream inStream; //get instream from somewhere
> String key = "propName"; //property key
> Value value = session.getValueFactory().createValue(inStream);
> NodeType nodeType = revisionNode.getPrimaryNodeType();
> if (nodeType.canAddProperty(key, value)) {
>     targetNode.setProperty(key, value);
> }
> Workaround:
> Create a dummy value to do the canAddProperty check.
> Value dummyValue = session.getValueFactory().createValue(session, new ByteArrayInputStream(new byte[0]));
> if (revisionNodeType.canSetProperty(key, dummyValue)) {
>     revisionNode.setProperty(key, (Value)value);
> }

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