com.avaje.ebeaninternal.server.subclass.MethodWriteReplace Maven / Gradle / Ivy
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/**
* Copyright (C) 2006 Robin Bygrave
*
* This file is part of Ebean.
*
* Ebean is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* Ebean is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Ebean; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.avaje.ebeaninternal.server.subclass;
import com.avaje.ebean.enhance.agent.ClassMeta;
import com.avaje.ebean.enhance.agent.EnhanceConstants;
import com.avaje.ebean.enhance.asm.ClassVisitor;
import com.avaje.ebean.enhance.asm.Label;
import com.avaje.ebean.enhance.asm.MethodVisitor;
import com.avaje.ebean.enhance.asm.Opcodes;
/**
* Add a writeReplace method to support optional serialization to vanilla beans.
*
*
* private Object writeReplace() throws ObjectStreamException {
* return ebeanIntercept.writeReplaceIntercept();
* }
*
*/
public class MethodWriteReplace implements Opcodes, EnhanceConstants {
/**
* Add a writeReplace() method.
*/
public static void add(ClassVisitor cv, ClassMeta classMeta) {
MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, "writeReplace", "()Ljava/lang/Object;",
null, new String[] { "java/io/ObjectStreamException" });
mv.visitCode();
Label l0 = new Label();
mv.visitLabel(l0);
mv.visitLineNumber(1, l0);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, classMeta.getClassName(), INTERCEPT_FIELD, L_INTERCEPT);
mv.visitMethodInsn(INVOKEVIRTUAL, C_INTERCEPT, "writeReplaceIntercept","()Ljava/lang/Object;");
mv.visitInsn(ARETURN);
Label l1 = new Label();
mv.visitLabel(l1);
mv.visitLocalVariable("this", "L"+classMeta.getClassName()+";", null, l0, l1, 0);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
}