Java 如何在xjc插件代码中引用xjc生成的ObjectFactory类?
理想情况下,我希望向ObjectFactory类添加一些生成的代码。如果不可能,我想在另一个生成的方法中使用生成的ObjectFactory作为参数 这个场景看起来像这样:Java 如何在xjc插件代码中引用xjc生成的ObjectFactory类?,java,xjc,Java,Xjc,理想情况下,我希望向ObjectFactory类添加一些生成的代码。如果不可能,我想在另一个生成的方法中使用生成的ObjectFactory作为参数 这个场景看起来像这样: import com.sun.tools.xjc.Plugin; import com.sun.tools.xjc.outline.Outline; import com.sun.tools.xjc.outline.ClassOutline; import com.sun.codemodel.JMethod; import
import com.sun.tools.xjc.Plugin;
import com.sun.tools.xjc.outline.Outline;
import com.sun.tools.xjc.outline.ClassOutline;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
public class App extends Plugin {
...
private static void generateMyMethod(Outline model, ClassOutline classOutline) {
//somehow get 'objectFactoryInstance'
JMethod method = classOutline.implClass.method(JMod.PUBLIC | JMod.FINAL | JMod.STATIC, Void.class, "useObjectFactory")
.param(objectFactoryInstance, "input"));
}
}
public final static void useObjectFactory(ObjectFactory input) {
//stuff happens here
}
生成的代码应该如下所示:
import com.sun.tools.xjc.Plugin;
import com.sun.tools.xjc.outline.Outline;
import com.sun.tools.xjc.outline.ClassOutline;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
public class App extends Plugin {
...
private static void generateMyMethod(Outline model, ClassOutline classOutline) {
//somehow get 'objectFactoryInstance'
JMethod method = classOutline.implClass.method(JMod.PUBLIC | JMod.FINAL | JMod.STATIC, Void.class, "useObjectFactory")
.param(objectFactoryInstance, "input"));
}
}
public final static void useObjectFactory(ObjectFactory input) {
//stuff happens here
}
问题是如何从我的XJC插件中访问生成的ObjectFactory?
除了ObjectFactory之外,其他生成的类都可以这样访问:
@Override
public boolean run(Outline model, Options opt, ErrorHandler errorHandler) throws SAXException {
for (ClassOutline classOutline : model.getClasses()) {
//do something with the generated class
}
}
我无法像访问其他生成的类一样访问生成的ObjectFactory类。现在我生成的代码假设将生成ObjectFactory。基于这个假设,我用我想要的方法创建了另一个类
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JExpression;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
import com.sun.codemodel.JVar;
import com.sun.tools.xjc.outline.ClassOutline;
//...
public void generateMethodThatUsesObjectFactory(ClassOutline classOutline) {
JMethod method = classOutline.implClass.method(JMod.PUBLIC |
JMod.FINAL, model.getModel().codeModel.VOID, "useObjectFactory");
JVar objectFactory = method.param(model.getModel().codeModel.ref(Object.class), "input");
JExpression objectFactoryCast = JExpr.cast(model.getModel().codeModel.ref("ObjectFactory"), objectFactory);
JBlock body = method.body();
//add the objectFactory and objectFactoryCast to the method body
//...
}
//...
生成的结果与以下代码类似:
public final static void useObjectFactory(Object input) {
JAXBElement<SomeType> je = ((ObjectFactory) input).callMethodOfObjectFactory();
//...
}
public最终静态void useObjectFactory(对象输入){
JAXBELENT je=((ObjectFactory)输入).callMethodOfObjectFactory();
//...
}
我认为这不是一个理想的方法,但它是有效的。希望在某个时候有一个更好的答案,我现在不接受我自己的答案。您不迭代类,而是迭代包,并通过
objectFactory()
访问工厂
@覆盖
公共布尔运行(大纲模型、选项opt、ErrorHandler ErrorHandler)引发SAXException{
对于(PackageOutline PackageOutline:model.getAllPackageContexts()){
JDefinedClass工厂=packageOutline.objectFactory();
//对于空包,factory可能为空
}
}
顺便说一句,每个ObjectFactory
都是在xjc处理xml/json/等时“动态”创建的。如果在生成的JDefinedClass
类中进行了手动类型更改,则需要手动调整对象工厂