Examples of org.eclipse.persistence.internal.libraries.asm.MethodVisitor.visitMaxs()

Package org.eclipse.persistence.internal.libraries.asm

Class org.eclipse.persistence.internal.libraries.asm.MethodVisitor

Examples of org.eclipse.persistence.internal.libraries.asm.MethodVisitor.visitMaxs()

org.eclipse.persistence.internal.libraries.asm.MethodVisitor.visitMaxs()
Visits the maximum stack size and the maximum number of local variables of the method. @param maxStack maximum stack size of the method. @param maxLocals maximum number of local variables for the method.

            // super(factory);
            cv_constructor.visitVarInsn(ALOAD, 1);
            cv_constructor.visitMethodInsn(INVOKESPECIAL, classDetails.getSuperClassName(), "<init>", "(" + PERSISTENCE_OBJECT_SIGNATURE + ")V");
        }
        cv_constructor.visitInsn(RETURN);
        cv_constructor.visitMaxs(0, 0);
    }


    /**
     * Add an internal generic get and set method. This is used to avoid
     * reflection.

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    public void addGetPropertyChangeListener(ClassDetails classDetails) {
        MethodVisitor cv_getPCL = cv.visitMethod(ACC_PUBLIC, "_persistence_getPropertyChangeListener", "()" + PCL_SIGNATURE, null, null);
        cv_getPCL.visitVarInsn(ALOAD, 0);
        cv_getPCL.visitFieldInsn(GETFIELD, classDetails.getClassName(), "_persistence_listener", PCL_SIGNATURE);
        cv_getPCL.visitInsn(ARETURN);
        cv_getPCL.visitMaxs(0, 0);
    }


    /**
     * Add the implementation of the changeTracker_setPropertyChangeListener
     * method to the class. The result is a method that looks as follows:

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        MethodVisitor cv_setPCL = cv.visitMethod(ACC_PUBLIC, "_persistence_setPropertyChangeListener", "(" + PCL_SIGNATURE + ")V", null, null);
        cv_setPCL.visitVarInsn(ALOAD, 0);
        cv_setPCL.visitVarInsn(ALOAD, 1);
        cv_setPCL.visitFieldInsn(PUTFIELD, classDetails.getClassName(), "_persistence_listener", PCL_SIGNATURE);
        cv_setPCL.visitInsn(RETURN);
        cv_setPCL.visitMaxs(0, 0);
    }


    /**
     * Add a method to track property changes. The method will look as follows:
     *

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        // }
        cv_addPC.visitLabel(l0);


        cv_addPC.visitInsn(RETURN);
        cv_addPC.visitMaxs(0, 0);
    }


    /**
     * Add a method that allows us to lazily initialize a valueholder we have
     * woven in This allows us to avoid initializing valueholders in the

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        // }
        cv_init_VH.visitLabel(l0);


        cv_init_VH.visitInsn(RETURN);
        cv_init_VH.visitMaxs(0, 0);
    }


    /**
     * Add a get method for the newly added valueholder. Adds a method of the
     * following form:

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        // return _toplink_foo_vh;
        cv_get_VH.visitVarInsn(ALOAD, 0);
        cv_get_VH.visitFieldInsn(GETFIELD, className, PERSISTENCE_FIELDNAME_PREFIX + attribute + PERSISTENCE_FIELDNAME_POSTFIX, VHI_SIGNATURE);
        cv_get_VH.visitInsn(ARETURN);


        cv_get_VH.visitMaxs(0, 0);
    }


    /**
     * Add a set method for the newly added ValueHolder. Adds a method of this
     * form:

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            cv_set_value.visitLabel(l2);
            cv_set_value.visitFrame(F_SAME, 0, null, 0, null);
        }
        
        cv_set_value.visitInsn(RETURN);
        cv_set_value.visitMaxs(0, 0);
    }


    /**
     * Adds a convenience method used to replace a PUTFIELD when field access is
     * used. The method follows the following form:

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            cv_get.visitVarInsn(ALOAD, 1);
            cv_get.visitMethodInsn(INVOKESPECIAL, classDetails.getSuperClassName(), "_persistence_get", "(Ljava/lang/String;)Ljava/lang/Object;");
        }


        cv_get.visitInsn(ARETURN);
        cv_get.visitMaxs(0, 0);


        // create the _persistence_set() method
        MethodVisitor cv_set = cv.visitMethod(ACC_PUBLIC, "_persistence_set", "(Ljava/lang/String;Ljava/lang/Object;)V", null, null);


        label = null;

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            cv_set.visitVarInsn(ALOAD, 2);
            cv_set.visitMethodInsn(INVOKESPECIAL, classDetails.getSuperClassName(), "_persistence_set", "(Ljava/lang/String;Ljava/lang/Object;)V");
        }


        cv_set.visitInsn(RETURN);
        cv_set.visitMaxs(0, 0);
    }


    /**
     * Adds get/set method for PersistenceEntity interface. This adds the
     * following methods:

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    public void addPersistenceEntityMethods(ClassDetails classDetails) {
        MethodVisitor cv_getPKVector = cv.visitMethod(ACC_PUBLIC, "_persistence_getId", "()" + OBJECT_SIGNATURE, null, null);
        cv_getPKVector.visitVarInsn(ALOAD, 0);
        cv_getPKVector.visitFieldInsn(GETFIELD, classDetails.getClassName(), "_persistence_primaryKey", OBJECT_SIGNATURE);
        cv_getPKVector.visitInsn(ARETURN);
        cv_getPKVector.visitMaxs(0, 0);


        MethodVisitor cv_setPKVector = cv.visitMethod(ACC_PUBLIC, "_persistence_setId", "(" + OBJECT_SIGNATURE + ")V", null, null);
        cv_setPKVector.visitVarInsn(ALOAD, 0);
        cv_setPKVector.visitVarInsn(ALOAD, 1);
        cv_setPKVector.visitFieldInsn(PUTFIELD, classDetails.getClassName(), "_persistence_primaryKey", OBJECT_SIGNATURE);

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