Package serp.bytecode

Examples of serp.bytecode.BCField

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     */
    private BCMethod createGetMethod(FieldMetaData fmd) {
        BCMethod getter;
        if (isFieldAccess(fmd)) {
            // static <fieldtype> pcGet<field> (XXX inst)
            BCField field = _pc.getDeclaredField(fmd.getName());
            getter = _pc.declareMethod(PRE + "Get" + fmd.getName(), fmd.
                getDeclaredType().getName(), new String[]{ _pc.getName() });
            getter.setAccessFlags(field.getAccessFlags()
                & ~Constants.ACCESS_TRANSIENT & ~Constants.ACCESS_VOLATILE);
            getter.setStatic(true);
            getter.setFinal(true);
            return getter;
        }
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     */
    private BCMethod createSetMethod(FieldMetaData fmd) {
        BCMethod setter;
        if (isFieldAccess(fmd)) {
            // static void pcSet<field> (XXX inst, <fieldtype> value)
            BCField field = _pc.getDeclaredField(fmd.getName());
            setter = _pc.declareMethod(PRE + "Set" + fmd.getName(), void.class,
                new Class[]{ getType(_meta), fmd.getDeclaredType() });
            setter.setAccessFlags(field.getAccessFlags()
                & ~Constants.ACCESS_TRANSIENT & ~Constants.ACCESS_VOLATILE);
            setter.setStatic(true);
            setter.setFinal(true);
            return setter;
        }
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     *
     * @param changeTracker whether to implement a null change tracker; if false
     * the change tracker method is left unimplemented
     */
    private void addProxyMethods(BCClass bc, boolean changeTracker) {
        BCField sm = bc.declareField("sm", OpenJPAStateManager.class);
        sm.setTransient(true);
        BCField field = bc.declareField("field", int.class);
        field.setTransient(true);

        BCMethod m = bc.declareMethod("setOwner", void.class, new Class[] {
            OpenJPAStateManager.class, int.class });
        m.makePublic();
        Code code = m.getCode(true);
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    /**
     * Implement the methods in the {@link ProxyCollection} interface.
     */
    private void addProxyCollectionMethods(BCClass bc, Class type) {
        // change tracker
        BCField changeTracker = bc.declareField("changeTracker",
            CollectionChangeTracker.class);
        changeTracker.setTransient(true);
        BCMethod m = bc.declareMethod("getChangeTracker", ChangeTracker.class,
            null);
        m.makePublic();
        Code code = m.getCode(true);
        code.aload().setThis();
        code.getfield().setField(changeTracker);
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();

        // collection copy
        Constructor cons = findCopyConstructor(type);
        if (cons == null && SortedSet.class.isAssignableFrom(type))
            cons = findComparatorConstructor(type);
        Class[] params = (cons == null) ? new Class[0]
            : cons.getParameterTypes();

        m = bc.declareMethod("copy", Object.class, new Class[] {Object.class});
        m.makePublic();
        code = m.getCode(true);

        code.anew().setType(type);
        code.dup();
        if (params.length == 1) {
            code.aload().setParam(0);
            if (params[0] == Comparator.class) {
                code.checkcast().setType(SortedSet.class);
                code.invokeinterface().setMethod(SortedSet.class, "comparator",
                    Comparator.class, null);
            } else
                code.checkcast().setType(params[0]);
        }
        code.invokespecial().setMethod(type, "<init>", void.class, params);
        if (params.length == 0 || params[0] == Comparator.class) {
            code.dup();
            code.aload().setParam(0);
            code.checkcast().setType(Collection.class);
            code.invokevirtual().setMethod(type, "addAll", boolean.class,
                new Class[] { Collection.class });
            code.pop();
        }
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();

        // element type
        BCField elementType = bc.declareField("elementType", Class.class);
        elementType.setTransient(true);
        m = bc.declareMethod("getElementType", Class.class, null);
        m.makePublic();
        code = m.getCode(true);
        code.aload().setThis();
        code.getfield().setField(elementType);
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    /**
     * Implement the methods in the {@link ProxyMap} interface.
     */
    private void addProxyMapMethods(BCClass bc, Class type) {
        // change tracker
        BCField changeTracker = bc.declareField("changeTracker",
            MapChangeTracker.class);
        changeTracker.setTransient(true);
        BCMethod m = bc.declareMethod("getChangeTracker", ChangeTracker.class,
            null);
        m.makePublic();
        Code code = m.getCode(true);
        code.aload().setThis();
        code.getfield().setField(changeTracker);
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();

        // map copy
        Constructor cons = findCopyConstructor(type);
        if (cons == null && SortedMap.class.isAssignableFrom(type))
            cons = findComparatorConstructor(type);
        Class[] params = (cons == null) ? new Class[0]
            : cons.getParameterTypes();

        m = bc.declareMethod("copy", Object.class, new Class[] {Object.class});
        m.makePublic();
        code = m.getCode(true);

        code.anew().setType(type);
        code.dup();
        if (params.length == 1) {
            code.aload().setParam(0);
            if (params[0] == Comparator.class) {
                code.checkcast().setType(SortedMap.class);
                code.invokeinterface().setMethod(SortedMap.class, "comparator",
                    Comparator.class, null);
            } else
                code.checkcast().setType(params[0]);
        }
        code.invokespecial().setMethod(type, "<init>", void.class, params);
        if (params.length == 0 || params[0] == Comparator.class) {
            code.dup();
            code.aload().setParam(0);
            code.checkcast().setType(Map.class);
            code.invokevirtual().setMethod(type, "putAll", void.class,
                new Class[] { Map.class });
        }
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();

        // key type
        BCField keyType = bc.declareField("keyType", Class.class);
        keyType.setTransient(true);
        m = bc.declareMethod("getKeyType", Class.class, null);
        m.makePublic();
        code = m.getCode(true);
        code.aload().setThis();
        code.getfield().setField(keyType);
        code.areturn();
        code.calculateMaxStack();
        code.calculateMaxLocals();

        // value type
        BCField valueType = bc.declareField("valueType", Class.class);
        valueType.setTransient(true);
        m = bc.declareMethod("getValueType", Class.class, null);
        m.makePublic();
        code = m.getCode(true);
        code.aload().setThis();
        code.getfield().setField(valueType);
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            fmds = _meta.getFields();
        else
            fmds = _meta.getDeclaredFields();
        Method meth;
        BCMethod getter, setter;
        BCField returned, assigned = null;
        for (int i = 0; i < fmds.length; i++) {

            if (!(fmds[i].getBackingMember() instanceof Method) ) {
                // If not mixed access is not defined, flag the field members,
                // otherwise do not process them because they are valid
                // persistent attributes.
                if (!_meta.isMixedAccess()) {
                    addViolation("property-bad-member",
                        new Object[]{ fmds[i], fmds[i].getBackingMember() },
                        true);
                }
                continue;
            }
           
            meth = (Method) fmds[i].getBackingMember();
            // ##### this will fail if we override and don't call super.
            BCClass declaringType = _managedType.getProject()
                .loadClass(fmds[i].getDeclaringType());
            getter = declaringType.getDeclaredMethod(meth.getName(),
                meth.getParameterTypes());
            if (getter == null) {
                addViolation("property-no-getter", new Object[]{ fmds[i] },
                    true);
                continue;
            }
            returned = getReturnedField(getter);
            if (returned != null)
                registerBackingFieldInfo(fmds[i], getter, returned);

            setter = declaringType.getDeclaredMethod(getSetterName(fmds[i]),
                new Class[]{ fmds[i].getDeclaredType() });
            if (setter == null) {
                if (returned == null) {
                    addViolation("property-no-setter",
                        new Object[]{ fmds[i] }, true);
                    continue;
                } else if (!getRedefine()) {
                    // create synthetic setter
                    setter = _managedType.declareMethod(getSetterName(fmds[i]),
                        void.class, new Class[]{ fmds[i].getDeclaredType() });
                    setter.makePrivate();
                    Code code = setter.getCode(true);
                    code.aload().setThis();
                    code.xload().setParam(0);
                    code.putfield().setField(returned);
                    code.vreturn();
                    code.calculateMaxStack();
                    code.calculateMaxLocals();
                }
            }

            if (setter != null)
                assigned = getAssignedField(setter);

            if (assigned != null) {
                if (setter != null)
                    registerBackingFieldInfo(fmds[i], setter, assigned);

                if (assigned != returned)
                    addViolation("property-setter-getter-mismatch", new Object[]
                        { fmds[i], assigned.getName(), (returned == null)
                        ? null : returned.getName() }, false);
            }
        }
    }
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        Code code = meth.getCode(false);
        if (code == null)
            return null;
        code.beforeFirst();

        BCField field = null, cur;
        Instruction templateIns, prevIns, earlierIns;
        while (code.searchForward(template)) {
            int backupCount = 3;
            templateIns = code.previous();
            if (!code.hasPrevious())
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        _pc.declareField(PRE + "FieldTypes", Class[].class).setStatic(true);
        _pc.declareField(PRE + "FieldFlags", byte[].class).setStatic(true);
        _pc.declareField(SUPER, Class.class).setStatic(true);
        if (_addVersionInitFlag && _meta.getVersionField() != null) {
            // protected transient boolean pcVersionInit;
            BCField field = _pc.declareField(VERSION_INIT_STR, boolean.class);
            field.makeProtected();
            field.setTransient(true);
        }
        if (_meta.getPCSuperclass() == null || getCreateSubclass()) {
            BCField field = _pc.declareField(SM, SMTYPE);
            field.makeProtected();
            field.setTransient(true);
        }
    }
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        // if not already present, add a serialVersionUID field; if the instance
        // is detachable and uses detached state without a declared field,
        // can't add a serial version UID because we'll be adding extra fields
        // to the enhanced version
        BCField field = _pc.getDeclaredField("serialVersionUID");
        if (field == null) {
            Long uid = null;
            try {
                uid = ObjectStreamClass.lookup
                    (_meta.getDescribedType()).getSerialVersionUID();
            } catch (Throwable t) {
                // last-chance catch for bug #283 (which can happen
                // in a variety of ClassLoading environments)
                if (_log.isTraceEnabled())
                    _log.warn(_loc.get("enhance-uid-access", _meta), t);
                else
                    _log.warn(_loc.get("enhance-uid-access", _meta));
            }

            // if we couldn't access the serialVersionUID, we will have to
            // skip the override of that field and not be serialization
            // compatible with non-enhanced classes
            if (uid != null) {
                field = _pc.declareField("serialVersionUID", long.class);
                field.makePrivate();
                field.setStatic(true);
                field.setFinal(true);

                Code code = getOrCreateClassInitCode(false);
                code.beforeFirst();
                code.constant().setValue(uid.longValue());
                code.putstatic().setField(field);
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        String name = null;
        String declarer = null;
        if (impl && detachField == null) {
            name = PRE + "DetachedState";
            declarer = _pc.getName();
            BCField field = _pc.declareField(name, Object.class);
            field.makePrivate();
            field.setTransient(true);
        } else if (impl) {
            name = detachField.getName();
            declarer = detachField.getDeclaringClass().getName();
        }
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Related Classes of serp.bytecode.BCField

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  • org.apache.openjpa.enhance.DynamicStorageGenerator
  • org.apache.openjpa.enhance.PCDataGenerator
  • org.apache.openjpa.enhance.PCEnhancer
  • org.apache.openjpa.enhance.PCSubclassValidator
  • org.apache.openjpa.enhance.TestPCEnhancerFindField
  • org.apache.openjpa.meta.InterfaceImplGenerator
  • org.apache.openjpa.util.ProxyManagerImpl
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