Stuart Williams created JENA-1066:
-------------------------------------
Summary: Node_Factory.createLiteralByValue creates malformed
literals from BigDecimal values
Key: JENA-1066
URL: https://issues.apache.org/jira/browse/JENA-1066
Project: Apache Jena
Issue Type: Bug
Components: Core, Datatypes
Affects Versions: Jena 3.0.0, Jena 2.13.0
Reporter: Stuart Williams
I've been working with some numeric data and have run into some problems when
using:
```
Node_Factory.createLiteralByValue(Object value, RDFDatatype dtype)
```
when value is a BigDecimal.
Jena ultimately uses `BigDecimal.toString()` to generate lexical forms for
well-formed-ness checking and to provide results for `.getLexicalForm()` on the
resulting `Node_Literal`. Unfortunately Java 1.5 changed the behaviour of
`BigDecimal.toString()` and added `BigDecimal.toPlainString()` which it
describes as an analog of the java 1.4 `BigDecimal.toString()` and which
specifically does not use exponential notation in its output. `xsd:decimal`
lexicalforms do not allow exponential notation
I'll attached small java program that illustrates the problem. The cases where
a dud literal form (i.e. as a literal in exponent from) are fair enough.
I've also locally created a fix that special cases instances of `BigDecimal` in
a couple of places. Patch file to be attached.
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