During startup error "You are running with invalid JAXP api or implementation" is logged

[tfr42]

When running deegree 3.4.14 during startup the following error message is logged:

ERROR: [JAXBUtils] Error in configuration file: You are running with invalid JAXP api or implementation. JAXP api/implementation of version 1.3.1 (included in JDK6) or higher is required. In case you are using ant, make sure ant 1.7.0 or higher is used - older versions of ant contain JAXP api/impl version 1.2 (in xml-apis.jar). If you want to keep using older ant versions, you have to configure it to use higher the JAXP api/impl versions.

[tfr42]

To resolve this issue you have to set the javax.xml.transform.TransformerFactory.

• For deegree 3.4.14 use:
  javax.xml.transform.TransformerFactory=net.sf.saxon.TransformerFactoryImpl which uses Saxon HE 9.9 as XSLT 2.0 implementation.

• For versions 3.4.13 and earlier you can add the following environment variable
  javax.xml.transform.TransformerFactory=com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl which uses the JAXP build-in TransformerFactory supporting XSTL 1.0.

[tfr42]

Information should go into documentation #1028 .

[tfr42]

With deegree 3.4.14 containing PR #999 (supporting XSLT 2.0 using Saxon 9.x) the transformer factory has to be set to:
javax.xml.transform.TransformerFactory=net.sf.saxon.TransformerFactoryImpl

This is an important change coming with version 3.4.14 which is not using Apache Xalan 2.x anymore!

[julianzz98]

In deegree version 3.5.3, the reported error message can not be observed during startup. Therefore the issue is considered as fixed.