Examples with EnumInfo org.eclipse.persistence.dynamic.DynamicClassLoader.EnumInfo used on opensource projects

Example 1 with EnumInfo

use of org.eclipse.persistence.dynamic.DynamicClassLoader.EnumInfo in project eclipselink by eclipse-ee4j.

the class DynamicClassWriter method writeClass.

@Override
public byte[] writeClass(DynamicClassLoader loader, String className) throws ClassNotFoundException {
    EnumInfo enumInfo = loader.enumInfoRegistry.get(className);
    if (enumInfo != null) {
        return createEnum(enumInfo);
    }
    Class<?> parent = getParentClass(loader);
    parentClassName = parent.getName();
    if (parent.isPrimitive() || parent.isArray() || parent.isEnum() || parent.isInterface() || Modifier.isFinal(parent.getModifiers())) {
        throw new IllegalArgumentException("Invalid parent class: " + parent);
    }
    String classNameAsSlashes = className.replace('.', '/');
    String parentClassNameAsSlashes = parentClassName.replace('.', '/');
    EclipseLinkASMClassWriter cw = new EclipseLinkASMClassWriter();
    // public class Foo extends DynamicEntityImpl {
    cw.visit(ACC_PUBLIC + ACC_SUPER, classNameAsSlashes, null, parentClassNameAsSlashes, interfaces != null ? interfaces.toArray(new String[interfaces.size()]) : null);
    // public static DynamicPropertiesManager DPM = new
    // DynamicPropertiesManager();
    cw.visitField(ACC_PUBLIC + ACC_STATIC, PROPERTIES_MANAGER_FIELD, "L" + DYNAMIC_PROPERTIES_MANAGER_CLASSNAME_SLASHES + ";", null, null);
    MethodVisitor mv = cw.visitMethod(ACC_STATIC, CLINIT, "()V", null, null);
    mv.visitTypeInsn(NEW, DYNAMIC_PROPERTIES_MANAGER_CLASSNAME_SLASHES);
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, DYNAMIC_PROPERTIES_MANAGER_CLASSNAME_SLASHES, INIT, "()V", false);
    mv.visitFieldInsn(PUTSTATIC, classNameAsSlashes, PROPERTIES_MANAGER_FIELD, "L" + DYNAMIC_PROPERTIES_MANAGER_CLASSNAME_SLASHES + ";");
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    // public Foo() {
    // super();
    // }
    mv = cw.visitMethod(ACC_PUBLIC, INIT, "()V", null, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, parentClassNameAsSlashes, INIT, "()V", false);
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv = cw.visitMethod(ACC_PUBLIC, "fetchPropertiesManager", "()L" + DYNAMIC_PROPERTIES_MANAGER_CLASSNAME_SLASHES + ";", null, null);
    mv.visitFieldInsn(GETSTATIC, classNameAsSlashes, PROPERTIES_MANAGER_FIELD, "L" + DYNAMIC_PROPERTIES_MANAGER_CLASSNAME_SLASHES + ";");
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    addFields(cw, parentClassNameAsSlashes);
    addMethods(cw, parentClassNameAsSlashes);
    cw.visitEnd();
    return cw.toByteArray();
}