Example usage for org.objectweb.asm MethodVisitor visitLdcInsn

List of usage examples for org.objectweb.asm MethodVisitor visitLdcInsn

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitLdcInsn.

Prototype

public void visitLdcInsn(final Object value)

Source Link

Document

Visits a LDC instruction.

Usage

From source file:com.android.build.gradle.internal.transforms.InstantRunTransform.java

License:Apache License

/**
 * Use asm to generate a concrete subclass of the AppPathLoaderImpl class.
 * It only implements one method ://from  w  ww.  ja  va2s.c  om
 *      String[] getPatchedClasses();
 *
 * The method is supposed to return the list of classes that were patched in this iteration.
 * This will be used by the InstantRun runtime to load all patched classes and register them
 * as overrides on the original classes.2 class files.
 *
 * @param patchFileContents list of patched class names.
 * @param outputDir output directory where to generate the .class file in.
 */
private static void writePatchFileContents(@NonNull ImmutableList<String> patchFileContents,
        @NonNull File outputDir, long buildId) {

    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, IncrementalVisitor.APP_PATCHES_LOADER_IMPL,
            null, IncrementalVisitor.ABSTRACT_PATCHES_LOADER_IMPL, null);

    // Add the build ID to force the patch file to be repackaged.
    cw.visitField(Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC + Opcodes.ACC_FINAL, "BUILD_ID", "J", null, buildId);

    {
        mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, IncrementalVisitor.ABSTRACT_PATCHES_LOADER_IMPL, "<init>",
                "()V", false);
        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "getPatchedClasses", "()[Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitIntInsn(Opcodes.BIPUSH, patchFileContents.size());
        mv.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/String");
        for (int index = 0; index < patchFileContents.size(); index++) {
            mv.visitInsn(Opcodes.DUP);
            mv.visitIntInsn(Opcodes.BIPUSH, index);
            mv.visitLdcInsn(patchFileContents.get(index));
            mv.visitInsn(Opcodes.AASTORE);
        }
        mv.visitInsn(Opcodes.ARETURN);
        mv.visitMaxs(4, 1);
        mv.visitEnd();
    }
    cw.visitEnd();

    byte[] classBytes = cw.toByteArray();
    File outputFile = new File(outputDir, IncrementalVisitor.APP_PATCHES_LOADER_IMPL + ".class");
    try {
        Files.createParentDirs(outputFile);
        Files.write(classBytes, outputFile);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:com.android.build.gradle.tasks.fd.GenerateInstantRunAppInfoTask.java

License:Apache License

void writeAppInfoClass(@NonNull String applicationId, @Nullable String applicationClass, long token)
        throws IOException {
    ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;/*  w  w  w  . j ava  2s . co m*/
    MethodVisitor mv;

    String appInfoOwner = "com/android/tools/fd/runtime/AppInfo";
    cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, appInfoOwner, null, "java/lang/Object", null);

    fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "applicationId", "Ljava/lang/String;", null, null);
    fv.visitEnd();
    fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "applicationClass", "Ljava/lang/String;", null, null);
    fv.visitEnd();
    fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "token", "J", null, null);
    fv.visitEnd();
    fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "usingApkSplits", "Z", null, null);
    fv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    mv.visitInsn(RETURN);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable("this", "L" + appInfoOwner + ";", null, l0, l1, 0);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
    mv.visitCode();
    mv.visitLdcInsn(applicationId);
    mv.visitFieldInsn(PUTSTATIC, appInfoOwner, "applicationId", "Ljava/lang/String;");
    if (applicationClass != null) {
        mv.visitLdcInsn(applicationClass);
    } else {
        mv.visitInsn(ACONST_NULL);
    }
    mv.visitFieldInsn(PUTSTATIC, appInfoOwner, "applicationClass", "Ljava/lang/String;");
    if (token != 0L) {
        mv.visitLdcInsn(token);
    } else {
        mv.visitInsn(LCONST_0);
    }
    mv.visitFieldInsn(PUTSTATIC, appInfoOwner, "token", "J");
    if (isUsingMultiApks()) {
        mv.visitInsn(ICONST_1);
    } else {
        mv.visitInsn(ICONST_0);
    }
    mv.visitFieldInsn(PUTSTATIC, appInfoOwner, "usingApkSplits", "Z");

    mv.visitInsn(RETURN);
    mv.visitMaxs(2, 0);
    mv.visitEnd();
    cw.visitEnd();

    byte[] bytes = cw.toByteArray();

    try (JarOutputStream outputStream = new JarOutputStream(
            new BufferedOutputStream(new FileOutputStream(getOutputFile())))) {
        outputStream.putNextEntry(new ZipEntry("com/android/tools/fd/runtime/AppInfo.class"));
        outputStream.write(bytes);
        outputStream.closeEntry();
    }
}

From source file:com.android.build.gradle.tasks.ir.GenerateInstantRunAppInfoTask.java

License:Apache License

void writeAppInfoClass(@NonNull String applicationId, long token) throws IOException {
    ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;/*from w w  w . ja v  a2s  .  c  o  m*/
    MethodVisitor mv;

    String appInfoOwner = SERVER_PACKAGE + "/AppInfo";
    cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, appInfoOwner, null, "java/lang/Object", null);

    fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "applicationId", "Ljava/lang/String;", null, null);
    fv.visitEnd();
    fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "token", "J", null, null);
    fv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    mv.visitInsn(RETURN);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable("this", "L" + appInfoOwner + ";", null, l0, l1, 0);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
    mv.visitCode();
    mv.visitLdcInsn(applicationId);
    mv.visitFieldInsn(PUTSTATIC, appInfoOwner, "applicationId", "Ljava/lang/String;");
    if (token != 0L) {
        mv.visitLdcInsn(token);
    } else {
        mv.visitInsn(LCONST_0);
    }
    mv.visitFieldInsn(PUTSTATIC, appInfoOwner, "token", "J");

    mv.visitInsn(RETURN);
    mv.visitMaxs(2, 0);
    mv.visitEnd();
    cw.visitEnd();

    byte[] bytes = cw.toByteArray();

    try (JarOutputStream outputStream = new JarOutputStream(
            new BufferedOutputStream(new FileOutputStream(getOutputFile())))) {
        outputStream.putNextEntry(new ZipEntry(SERVER_PACKAGE + "/AppInfo.class"));
        outputStream.write(bytes);
        outputStream.closeEntry();
    }
}

From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

/**
 * Adds a constant value on to the top of the stack.
 * @param method the current method visitor
 * @param value the target value/*w  w  w  .j  a va 2 s.  co  m*/
 */
public static void getConst(MethodVisitor method, Object value) {
    if (value == null) {
        method.visitInsn(Opcodes.ACONST_NULL);
    } else if (value instanceof Boolean) {
        getInt(method, ((Boolean) value).booleanValue() ? 1 : 0);
    } else if (value instanceof Byte) {
        getInt(method, ((Byte) value).byteValue());
    } else if (value instanceof Short) {
        getInt(method, ((Short) value).shortValue());
    } else if (value instanceof Character) {
        getInt(method, ((Character) value).charValue());
    } else if (value instanceof Integer) {
        getInt(method, ((Integer) value).intValue());
    } else if (value instanceof Long) {
        getLong(method, ((Long) value).longValue());
    } else if (value instanceof Float) {
        getFloat(method, ((Float) value).floatValue());
    } else if (value instanceof Double) {
        getDouble(method, ((Double) value).doubleValue());
    } else if (value instanceof ImmediateDescription) {
        getConst(method, ((ImmediateDescription) value).getValue());
    } else if (value instanceof EnumConstantDescription) {
        getEnumConstant(method, (EnumConstantDescription) value);
    } else if (value instanceof TypeDescription) {
        method.visitLdcInsn(typeOf((TypeDescription) value));
    } else {
        method.visitLdcInsn(value);
    }
}

From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

/**
 * Adds a constant value on to the top of the stack.
 * @param method the current method visitor
 * @param value the target value//www  .  j  av a  2s.  c  o  m
 */
public static void getInt(MethodVisitor method, int value) {
    if (-1 <= value && value <= 5) {
        method.visitInsn(Opcodes.ICONST_0 + value);
    } else if (Byte.MIN_VALUE <= value && value <= Byte.MAX_VALUE) {
        method.visitIntInsn(Opcodes.BIPUSH, value);
    } else if (Short.MIN_VALUE <= value && value <= Short.MAX_VALUE) {
        method.visitIntInsn(Opcodes.SIPUSH, value);
    } else {
        method.visitLdcInsn(value);
    }
}

From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

/**
 * Adds a constant value on to the top of the stack.
 * @param method the current method visitor
 * @param value the target value/*from www  .  ja v  a 2  s  . com*/
 */
public static void getLong(MethodVisitor method, long value) {
    if (0L <= value && value <= 1L) {
        method.visitInsn((int) (Opcodes.LCONST_0 + value));
    } else {
        method.visitLdcInsn(value);
    }
}

From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

/**
 * Adds a constant value on to the top of the stack.
 * @param method the current method visitor
 * @param value the target value// w w w. j a  va2s  .  c  o  m
 */
public static void getFloat(MethodVisitor method, float value) {
    if (value == 0f || value == 1f || value == 2f) {
        method.visitInsn(Opcodes.FCONST_0 + (int) value);
    } else {
        method.visitLdcInsn(value);
    }
}

From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

/**
 * Adds a constant value on to the top of the stack.
 * @param method the current method visitor
 * @param value the target value//from   w  w  w.  j av  a2 s .  c  o m
 */
public static void getDouble(MethodVisitor method, double value) {
    if (value == 0d || value == 1d) {
        method.visitInsn(Opcodes.DCONST_0 + (int) value);
    } else {
        method.visitLdcInsn(value);
    }
}

From source file:com.centimia.orm.jaqu.ext.asm.JaquClassAdapter.java

License:Open Source License

/**
 * Generates the new method body, copy the old to a new method and connect them.
 * //from  w  w  w.j av  a  2s.  c  o  m
 * the structure of the new method is:<br>
 * <br><b><div style="background:lightgray">
 * <pre>
 * public [CollectionType] [getterName]() {
 *    if ([fieldName] == null){
 *       try {
 *          if (null == db || db.isClosed())
 *             throw new RuntimeException("Cannot initialize a 'Relation' outside an open session!!!. Try initializing the field directly within the class.");
 *          Method method = db.getClass().getDeclaredMethod("getRelationFromDb", String.class, Object.class, Class.class);
 *          method.setAccessible(true);
 *          children = (Collection<TestTable>)method.invoke(db, [fieldName], this, TestTable.class);
 *          method.setAccessible(false);
 *       }
 *       catch (Exception e) {
 *          if (e instanceof RuntimeException)
 *             throw (RuntimeException)e;
 *          throw new RuntimeException(e.getMessage(), e);
 *       }
 *    }
 * return $orig_[getterName]();
 * }
 * </pre>
 * </div>
 * 
 * @param access
 * @param desc
 * @param signature
 * @param exceptions
 * @param name
 * @param newName
 * @param fieldName
 */
private void generateNewMethodBody(int access, String desc, String signature, String[] exceptions, String name,
        String newName, String fieldName) {
    MethodVisitor mv = cv.visitMethod(access, name, desc, signature, exceptions);
    String fieldSignature = signature.substring(signature.indexOf(')') + 1, signature.lastIndexOf('<')) + ";";
    String type = signature.substring(signature.indexOf('<') + 1, signature.indexOf('>'));
    String cast = desc.substring(desc.indexOf("java/"), desc.indexOf(';'));

    mv.visitCode();
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, fieldName, fieldSignature);
    Label l3 = new Label();
    mv.visitJumpInsn(IFNONNULL, l3);
    mv.visitLabel(l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    Label l4 = new Label();
    mv.visitJumpInsn(IFNULL, l4);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/Db", "isClosed", "()Z", false);
    Label l5 = new Label();
    mv.visitJumpInsn(IFEQ, l5);
    mv.visitLabel(l4);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
    mv.visitInsn(DUP);
    mv.visitLdcInsn(
            "Cannot initialize a 'Relation' outside an open session!!!. Try initializing the field directly within the class.");
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V", false);
    mv.visitInsn(ATHROW);
    mv.visitLabel(l5);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
    mv.visitLdcInsn("getRelationFromDb");
    mv.visitInsn(ICONST_3);
    mv.visitTypeInsn(ANEWARRAY, "java/lang/Class");
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_0);
    mv.visitLdcInsn(Type.getType("Ljava/lang/String;"));
    mv.visitInsn(AASTORE);
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_1);
    mv.visitLdcInsn(Type.getType("Ljava/lang/Object;"));
    mv.visitInsn(AASTORE);
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_2);
    mv.visitLdcInsn(Type.getType("Ljava/lang/Class;"));
    mv.visitInsn(AASTORE);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredMethod",
            "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;", false);
    mv.visitVarInsn(ASTORE, 1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitInsn(ICONST_1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "setAccessible", "(Z)V", false);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    mv.visitInsn(ICONST_3);
    mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_0);
    mv.visitLdcInsn(fieldName);
    mv.visitInsn(AASTORE);
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitInsn(AASTORE);
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_2);
    mv.visitLdcInsn(Type.getType(type));
    mv.visitInsn(AASTORE);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "invoke",
            "(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;", false);
    mv.visitTypeInsn(CHECKCAST, cast);
    mv.visitFieldInsn(PUTFIELD, className, fieldName, fieldSignature);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitInsn(ICONST_0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "setAccessible", "(Z)V", false);
    mv.visitLabel(l1);
    mv.visitJumpInsn(GOTO, l3);
    mv.visitLabel(l2);
    mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/Exception" });
    mv.visitVarInsn(ASTORE, 1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(INSTANCEOF, "java/lang/RuntimeException");
    Label l6 = new Label();
    mv.visitJumpInsn(IFEQ, l6);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(CHECKCAST, "java/lang/RuntimeException");
    mv.visitInsn(ATHROW);
    mv.visitLabel(l6);
    mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { "java/lang/Exception" }, 0, null);
    mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
    mv.visitInsn(DUP);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Exception", "getMessage", "()Ljava/lang/String;", false);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>",
            "(Ljava/lang/String;Ljava/lang/Throwable;)V", false);
    mv.visitInsn(ATHROW);
    mv.visitLabel(l3);
    mv.visitFrame(Opcodes.F_CHOP, 1, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, className, newName, desc, false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(7, 2);
    mv.visitEnd();
}

From source file:com.centimia.orm.jaqu.ext.asm.JaquClassAdapter.java

License:Open Source License

/**
 * Generates the new method body, copy the old to a new method and connect them.
 * the structure of the new method is:<br>
 * <br><b><div style="background:lightgray">
 * <pre>// w  w w . j a  v  a2s . c o  m
 * public [entityType] [getterName]() {
 *   if ([field] == null) {
 *      try {
 *         if (null == db)
 *            throw new RuntimeException("Cannot initialize 'Relation' outside an open session!!!. Try initializing field directly within the class.");
 *         
 *         [parentType] parent = this.getClass().newInstance();
 *         [entityType] desc = TestB.class.newInstance();
 *         
 *         // get the primary key
 *         Object pk = db.getPrimaryKey(this);
 *         
 *         // get the object
 *         [entityValue] = db.from(desc).innerJoin(parent).on(parent.[entityValue]).is(desc).where(db.getPrimaryKey(parent)).is(pk).selectFirst();
 *      }
 *      catch (Exception e) {
 *         if (e instanceof RuntimeException)
 *            throw (RuntimeException)e;
 *         throw new RuntimeException(e.getMessage(), e);
 *      }
 *   }
 *   return $orig_[getterName]();
 *  }
 * </pre>
 * </div>
 * 
 * @param access
 * @param desc
 * @param exceptions
 * @param name - current method name
 * @param newName - new method name (the orig...)
 * @param fieldName
 */
public void generateLazyRelation(int access, String desc, String[] exceptions, String name, String newName,
        String fieldName) {
    MethodVisitor mv = cv.visitMethod(access, name, desc, null, exceptions);
    String fieldSignature = desc.substring(desc.indexOf(')') + 1);
    String fieldClassName = desc.substring(desc.indexOf(')') + 2, desc.length() - 1);

    mv.visitCode();
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, fieldName, fieldSignature);
    Label l3 = new Label();
    mv.visitJumpInsn(IFNULL, l3);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, fieldName, fieldSignature);
    mv.visitFieldInsn(GETFIELD, fieldClassName, "isLazy", "Z");
    mv.visitJumpInsn(IFEQ, l3);
    mv.visitLabel(l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    Label l4 = new Label();
    mv.visitJumpInsn(IFNULL, l4);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/Db", "isClosed", "()Z", false);
    Label l5 = new Label();
    mv.visitJumpInsn(IFEQ, l5);
    mv.visitLabel(l4);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
    mv.visitInsn(DUP);
    mv.visitLdcInsn(
            "Cannot initialize 'Relation' outside an open session!!!. Try initializing field directly within the class.");
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V", false);
    mv.visitInsn(ATHROW);
    mv.visitLabel(l5);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "newInstance", "()Ljava/lang/Object;", false);
    mv.visitTypeInsn(CHECKCAST, className);
    mv.visitVarInsn(ASTORE, 1);
    mv.visitLdcInsn(Type.getType(fieldSignature));
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "newInstance", "()Ljava/lang/Object;", false);
    mv.visitTypeInsn(CHECKCAST, fieldClassName);
    mv.visitVarInsn(ASTORE, 2);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/Db", "getPrimaryKey",
            "(Ljava/lang/Object;)Ljava/lang/Object;", false);
    mv.visitVarInsn(ASTORE, 3);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    mv.visitVarInsn(ALOAD, 2);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/Db", "from",
            "(Ljava/lang/Object;)Lcom/centimia/orm/jaqu/QueryInterface;", false);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEINTERFACE, "com/centimia/orm/jaqu/QueryInterface", "innerJoin",
            "(Ljava/lang/Object;)Lcom/centimia/orm/jaqu/QueryJoin;", true);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitFieldInsn(GETFIELD, className, fieldName, fieldSignature);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/QueryJoin", "on",
            "(Ljava/lang/Object;)Lcom/centimia/orm/jaqu/QueryJoinCondition;", false);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/QueryJoinCondition", "is",
            "(Ljava/lang/Object;)Lcom/centimia/orm/jaqu/QueryJoinWhere;", false);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, "db", "Lcom/centimia/orm/jaqu/Db;");
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/Db", "getPrimaryKey",
            "(Ljava/lang/Object;)Ljava/lang/Object;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/QueryJoinWhere", "where",
            "(Ljava/lang/Object;)Lcom/centimia/orm/jaqu/QueryCondition;", false);
    mv.visitVarInsn(ALOAD, 3);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/QueryCondition", "is",
            "(Ljava/lang/Object;)Lcom/centimia/orm/jaqu/QueryWhere;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "com/centimia/orm/jaqu/QueryWhere", "selectFirst", "()Ljava/lang/Object;",
            false);
    mv.visitTypeInsn(CHECKCAST, fieldClassName);
    mv.visitFieldInsn(PUTFIELD, className, fieldName, fieldSignature);
    mv.visitLabel(l1);
    mv.visitJumpInsn(GOTO, l3);
    mv.visitLabel(l2);
    mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/Exception" });
    mv.visitVarInsn(ASTORE, 1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(INSTANCEOF, "java/lang/RuntimeException");
    Label l6 = new Label();
    mv.visitJumpInsn(IFEQ, l6);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(CHECKCAST, "java/lang/RuntimeException");
    mv.visitInsn(ATHROW);
    mv.visitLabel(l6);
    mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { "java/lang/Exception" }, 0, null);
    mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
    mv.visitInsn(DUP);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Exception", "getMessage", "()Ljava/lang/String;", false);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>",
            "(Ljava/lang/String;Ljava/lang/Throwable;)V", false);
    mv.visitInsn(ATHROW);
    mv.visitLabel(l3);
    mv.visitFrame(Opcodes.F_CHOP, 1, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, className, newName, desc, false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(4, 4);
    mv.visitEnd();
}