Examples with MethodVisitor org.apache.xbean.asm5.MethodVisitor used on opensource projects

Example 26 with MethodVisitor

use of org.apache.xbean.asm5.MethodVisitor in project tomee by apache.

the class Cmp2Generator method createEjbLoad.

public void createEjbLoad() {
    final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "ejbLoad", "()V", null, null);
    mv.visitCode();
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 1);
    mv.visitEnd();
}

Example 27 with MethodVisitor

use of org.apache.xbean.asm5.MethodVisitor in project tomee by apache.

the class Cmp2Generator method createCmrGetter.

/**
 * Create a getter method for the CMR field.  This
 * will used the accessor object initialized into the
 * name + "Cmr" field that was already generated and
 * initialized at object creation.  The accessor
 * object manages the object relationship.
 *
 * @param cmrField The field we're generating.
 */
private void createCmrGetter(final CmrField cmrField) {
    // no back reference.  We don't generate a getter method for this
    if (cmrField.isSynthetic()) {
        return;
    }
    final String methodName = getterName(cmrField.getName());
    final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, methodName, "()" + cmrField.getProxyDescriptor(), null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName() + "Cmr", cmrField.getAccessorDescriptor());
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
    // return this.${cmrField.name}Cmr.get(this.${cmdField.name});
    // this takes the value stored in the CMR field (which might be a single value or
    // a Set or Collection), and hands it to the appropriate accessor.
    mv.visitMethodInsn(INVOKEVIRTUAL, cmrField.getAccessorInternalName(), "get", cmrField.getCmrStyle().getGetterDescriptor(), false);
    // to the target class before returning.
    if (cmrField.getCmrStyle() == CmrStyle.SINGLE) {
        mv.visitTypeInsn(CHECKCAST, cmrField.getProxyType().getInternalName());
    }
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

Example 28 with MethodVisitor

use of org.apache.xbean.asm5.MethodVisitor in project tomee by apache.

the class Cmp2Generator method initCmrFields.

/**
 * Initialize the CMR fields associated with a CMR
 * definition.  This initializes two fields per CMR
 * defined field:  1)  The CMR field itself (which might
 * be initialized to an instance of a defined type) and 2)
 * the appropriate CMD accessor that handles the
 * different types of relationship.
 *
 * @param mv       The method context we're initializing in.
 * @param cmrField The CMR field to process.
 */
private void initCmrFields(final MethodVisitor mv, final CmrField cmrField) {
    // this.${cmrField.name} = new ${cmrField.initialValueType}();
    final Type initialValueType = cmrField.getInitialValueType();
    if (initialValueType != null) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitTypeInsn(NEW, initialValueType.getInternalName());
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, initialValueType.getInternalName(), "<init>", "()V", false);
        mv.visitFieldInsn(PUTFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
    }
    // this.${cmrField.name}Cmr = new ${cmrField.accessorType}<${cmrField.type}, ${cmrField.proxyType}>(this,
    // ${cmrField.name},
    // ${cmrField.type},
    // ${cmrField.relatedName});
    mv.visitVarInsn(ALOAD, 0);
    mv.visitTypeInsn(NEW, cmrField.getAccessorInternalName());
    mv.visitInsn(DUP);
    // arg0: EntityBean source = this
    mv.visitVarInsn(ALOAD, 0);
    // arg1: String sourceProperty - "b"
    mv.visitLdcInsn(cmrField.getName());
    // arg2: Class<Bean> relatedType = BBean_BBean
    mv.visitLdcInsn(cmrField.getType());
    // arg3: String relatedProperty
    if (cmrField.getRelatedName() != null) {
        mv.visitLdcInsn(cmrField.getRelatedName());
    } else {
        mv.visitInsn(ACONST_NULL);
    }
    // invoke
    mv.visitMethodInsn(INVOKESPECIAL, cmrField.getAccessorInternalName(), "<init>", "(Ljavax/ejb/EntityBean;Ljava/lang/String;Ljava/lang/Class;Ljava/lang/String;)V", false);
    // bCmr = result
    mv.visitFieldInsn(PUTFIELD, implClassName, cmrField.getName() + "Cmr", cmrField.getAccessorDescriptor());
}

Example 29 with MethodVisitor

use of org.apache.xbean.asm5.MethodVisitor in project tomee by apache.

the class Cmp2Generator method createOpenEJB_deleted.

private void createOpenEJB_deleted() {
    final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "OpenEJB_deleted", "()V", null, null);
    mv.visitCode();
    /* if (deleted) return; */
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, implClassName, DELETED, "Z");
    final Label notDeleted = new Label();
    mv.visitJumpInsn(IFEQ, notDeleted);
    mv.visitInsn(RETURN);
    mv.visitLabel(notDeleted);
    // deleted = true;
    mv.visitVarInsn(ALOAD, 0);
    mv.visitInsn(ICONST_1);
    mv.visitFieldInsn(PUTFIELD, implClassName, DELETED, "Z");
    for (final CmrField cmrField : cmrFields) {
        // ${cmrField.accessor}.delete(${cmrField.name});
        createOpenEJB_deleted(mv, cmrField);
    }
    // return;
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

Example 30 with MethodVisitor

use of org.apache.xbean.asm5.MethodVisitor in project tomee by apache.

the class PostCreateGenerator method createEjbPostCreate.

/**
 * Generate an ejbPostCreatexxxx method corresponding
 * to an ejbCreatexxxx method definition.  These provided
 * methods are just empty stubs.
 *
 * @param ejbPostCreateName The name we're creating under.
 * @param ejbCreate         The matching ejbCreate method.  The post create method
 *                          will match this one in terms of method signature.
 */
public void createEjbPostCreate(final String ejbPostCreateName, final Method ejbCreate) {
    final String methodDescriptor = Type.getMethodDescriptor(Type.VOID_TYPE, Type.getArgumentTypes(ejbCreate));
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, ejbPostCreateName, methodDescriptor, null, null);
    mv.visitCode();
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(0, ejbCreate.getParameterTypes().length + 1);
    mv.visitEnd();
}