XJC binding file: override package based on namesp

2019-08-05 20:24发布

问题:

I'd like to override package for my schema via binding .xjb file.

It is done with:

<schemaBindings>
    <package name="com.schema.common" />
</schemaBindings>

JXC compiler expects context for above code, defined via schemaLocation.

I store .xsd and .xjb files in separate directories and this looks ugly (like all Java EE):

<bindings schemaLocation="../../../../wsdl/common_v47_0/CommonReqRsp.xsd">
    <schemaBindings>
        <package name="com.schema.common" />
    </schemaBindings>
</bindings>

It is possible to define bindings context without relative path in schemaLocation?

I dread XML Catalogs, we are in WEB 2.0 (or may be 4.0?) world.

I've seen SCD ("schema component designator"). It looks promising but I can't find reference for this syntax...

回答1:

Here is the magic of SCD:

<?xml version="1.0" encoding="UTF-8"?>
<bindings xmlns="http://java.sun.com/xml/ns/jaxb" version='2.1'
          xmlns:xsd="http://www.w3.org/2001/XMLSchema"
          xmlns:tns="http://example/schema/common_v47_0">
    <bindings scd="x-schema::tns">
        <schemaBindings>
            <package name="com.schema.common" />
        </schemaBindings>
    </bindings>
</bindings>

All parts are important. SCD was introduced in version='2.1'.

I found reference at https://github.com/highsource/maven-jaxb2-plugin/wiki/Configure-Target-Packages-in-Binding-Files

SCD is extension of JAXB standard and implementation can be investigated in JAXB RI source tree:

upstream (with stripped history): https://github.com/eclipse-ee4j/jaxb-ri/tree/master/jaxb-ri/xsom/src/main/java/com/sun/xml/xsom/impl/scd
old sources: https://github.com/javaee/jaxb-v2/tree/master/jaxb-ri/xsom/src/main/java/com/sun/xml/xsom/impl/scd