Examples of org.apache.bcel.generic.FieldGen

org.apache.bcel.generic.FieldGen
Template class for building up a field. The only extraordinary thing one can do is to add a constant value attribute to a field (which must of course be compatible with to the declared type). @version $Id: FieldGen.java,v 1.1.1.1 2001/10/29 20:00:12 jvanzyl Exp $ @author M. Dahm @see Field

        for (int i = 0; i < fields.length; i++) {
            if (fields[i].getName().equals(TransformationUtil.STATIC_CLASS_FIELD))
                return;
        }


        final FieldGen field = new FieldGen(
                Constants.ACC_PRIVATE | Constants.ACC_FINAL | Constants.ACC_STATIC,
                new ObjectType("java.lang.Class"),
                TransformationUtil.STATIC_CLASS_FIELD,
                cp);


        cg.addField(field.getField());
    }

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        if (cg.containsField(joinPoint.toString()) != null) {
            return;
        }


        final FieldGen field = new FieldGen(
                Constants.ACC_PRIVATE | Constants.ACC_FINAL | Constants.ACC_STATIC,
                joinPointType,
                joinPoint.toString(),
                cp);


        cg.addField(field.getField());
    }

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        for (int i = 0; i < fields.length; i++) {
            if (fields[i].getName().equals(TransformationUtil.STATIC_CLASS_FIELD))
                return;
        }


        final FieldGen field = new FieldGen(
                Constants.ACC_PRIVATE | Constants.ACC_FINAL | Constants.ACC_STATIC,
                new ObjectType("java.lang.Class"),
                TransformationUtil.STATIC_CLASS_FIELD,
                cp
        );


        cg.addField(field.getField());
    }

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        if (cg.containsField(joinPoint.toString()) != null) {
            return;
        }


        final FieldGen field = new FieldGen(
                Constants.ACC_PRIVATE | Constants.ACC_FINAL | Constants.ACC_STATIC,
                TransformationUtil.CALLER_SIDE_JOIN_POINT_TYPE,
                joinPoint.toString(),
                cp
        );


        cg.addField(field.getField());
    }

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            if (fields[i].getName().equals(TransformationUtil.STATIC_CLASS_FIELD)) {
                return;
            }
        }


        final FieldGen field = new FieldGen(
                Constants.ACC_PRIVATE | Constants.ACC_FINAL | Constants.ACC_STATIC,
                new ObjectType("java.lang.Class"),
                TransformationUtil.STATIC_CLASS_FIELD,
                cp
        );


        cg.addField(field.getField());
    }

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        if (cg.containsField(joinPoint) != null) {
            return;
        }


        final FieldGen field = new FieldGen(
                Constants.ACC_PRIVATE | Constants.ACC_FINAL | Constants.ACC_STATIC,
                new ObjectType(TransformationUtil.THREAD_LOCAL_CLASS),
                joinPoint,
                cp
        );


        cg.addField(field.getField());
    }

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     * @param context the transformation context
     * @param cg the class gen
     * @param initialCg the initial class gen
     */
    private void addSerialVersionUidField(final Context context, ClassGen cg, final ClassGen initialCg) {
        FieldGen field = new FieldGen(
                Constants.ACC_FINAL | Constants.ACC_STATIC,
                Type.LONG,
                TransformationUtil.SERIAL_VERSION_UID_FIELD,
                cg.getConstantPool());
        final long uid = TransformationUtil.calculateSerialVersionUid(context, initialCg);
        field.setInitValue(uid);
        TransformationUtil.addField(cg, field.getField());
    }

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        if (m_classGen == null) throw new IllegalStateException("attribute enhancer is not initialized");
        byte[] serializedAttribute = serialize(attribute);
        Field[] classfileField = m_classGen.getFields();
        for (int i = 0; i < classfileField.length; i++) {
            if (classfileField[i].getName().equals(field.getName())) {
                FieldGen fieldGen = new FieldGen(classfileField[i], m_constantPoolGen);
                Attribute attr = new Unknown(
                        m_constantPoolGen.addUtf8("Custom"),
                        serializedAttribute.length,
                        serializedAttribute,
                        m_constantPoolGen.getConstantPool()
                );
                fieldGen.addAttribute(attr);
                Field newField = fieldGen.getField();
                m_classGen.replaceField(classfileField[i], newField);
            }
        }
    }

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        }
        byte[] serializedAttribute = serialize(attribute);
        Field[] classfileField = m_classGen.getFields();
        for (int i = 0; i < classfileField.length; i++) {
            if (classfileField[i].getName().equals(field.getName())) {
                FieldGen fieldGen = new FieldGen(classfileField[i], m_constantPoolGen);
                Attribute attr = new Unknown(
                        m_constantPoolGen.addUtf8(AttributeEnhancer.CUSTOM_ATTRIBUTE),
                        serializedAttribute.length, serializedAttribute,
                        m_constantPoolGen.getConstantPool()
                );
                fieldGen.addAttribute(attr);
                Field newField = fieldGen.getField();
                m_classGen.replaceField(classfileField[i], newField);
            }
        }
    }

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