How to add custom initialization to the Pull Parser

[Manuel Bernhardt]

Hi,

I'd like to initialize the pull parser so that it doesn't blow up when
undeclared entities come in. Right now I get the following trace:

[error] WstxParsingException: Undeclared general entity "lot"
[error] at [row,col {unknown-source}]: [3,19] (StreamScanner.java:
485)
[error]
com.ctc.wstx.sr.StreamScanner.constructWfcException(StreamScanner.java:
612)
[error]
com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:485)


I was thinking of configuring something along the lines of

xmlif.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES,
Boolean.FALSE);
  xmlif.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES,
Boolean.FALSE);
  xmlif.setProperty(XMLInputFactory.IS_COALESCING, Boolean.FALSE);

but how can I get a hold on the reader?

Thanks!

Manuel

[Chris]

Hi Manuel,

The parsers used for both pull and sax based parsing are parameters to
the calls allowing you to replace the whole parser factory used.

In the case of pullXml(Resource/Completely) the parserFactoryPool
named parameter supplies the factory with the default being the fun
name DefaultStaxInputFactoryPool.

For example to add those properties define:

  object CustomStaxInputFactoryPool extends
scales.utils.SimpleUnboundedPool[XMLInputFactory] { pool =>

    val cdata = "http://java.sun.com/xml/stream/properties/report-
cdata-event"

    def create = {
      val fac = XMLInputFactory.newInstance()
      if (fac.isPropertySupported(cdata)) {
fac.setProperty(cdata, java.lang.Boolean.TRUE)
      }
      if
(fac.isPropertySupported(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES))
{
fac.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES,
java.lang.Boolean.FALSE)
      }
      if
(fac.isPropertySupported(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES))
{
fac.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES,
java.lang.Boolean.FALSE)
      }
      if (fac.isPropertySupported(XMLInputFactory.IS_COALESCING)) {
fac.setProperty(XMLInputFactory.IS_COALESCING,
java.lang.Boolean.FALSE)
      }
      fac
    }
  }

Then call pullXml with the pool:

  pullXml( source, parserFactoryPool = CustomStaxInputFactoryPool )

You can also use this approach to customise creation of the factory
itself.

Hope that helps,

Cheers,
Chris

On May 18, 5:50 pm, Manuel Bernhardt <bernhardt.man...@gmail.com>
wrote:

[Manuel Bernhardt]

Thanks Chris, this is exactly what I was looking for!

Cheers,

Manuel

[Chris Twiner]

Excellent news :)