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javax.xml.bind.UnmarshalException org.xml.sax.SAXParseException: The reference to entity must end with the ; delimiter.

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Question by EricCharpentier  (4399) | Feb 12, 2016 at 10:14 AM ibmodmxmlsba_arm

After an upgrade from JRules to ODM we are receiving errors because of an ampersand in our data. This used to work before.

Caused by: javax.xml.bind.UnmarshalException
- with linked exception: [org.xml.sax.SAXParseException: The reference to entity "NIGHT" must end with the ; delimiter.

LiezlChin

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Answer by EricCharpentier (4399) | Feb 12, 2016 at 10:24 AM

The error you are receiving:

Caused by: javax.xml.bind.UnmarshalException
- with linked exception: [org.xml.sax.SAXParseException: The reference to entity "NIGHT" must end with the ; delimiter.

is essentially confirming that there is an issue with the ampersand located in the data and preceding the "NIGHT" because your data is "DAY&NIGHT".

The ampersand is in fact a special character in XML. Occurrences of the ampersand need to be substituted with & in order for the XML parser to be able to process the information properly.

In fact, there are a total of 5 characters that need special treatment:
&lt;(<), &amp; (&), &gt; (>), &quot; ("), and &apos; (').

You can perform this substitution yourself before making the call to the rule service, but it does make the XML a bit harder to read for users.

The alternative to this is to wrap the specific fields that might contain special characters into a CDATA field.

The following technote explains this (although it point to older version of JRules and ODM):

http://www-01.ibm.com/support/docview.wss?uid=swg21498780

You can also read more about CDATA here:

http://www.ibm.com/developerworks/library/x-cdata/

The differences in behavior between JRules and ODM can be explained by the use of different (or different versions) of XML Parser libraries.

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