Examples of org.apache.openjpa.util.ProxyManager

org.apache.openjpa.util.ProxyManager
Manager for copying and proxying second class objects. Second class objects are those that are often used as fields of persistent or transactional instances, and which can themselves be modified without resetting the owning class' field. Because these types can change without an explicit call to the owning persistence capable instance, special care must be taken to ensure that their state is managed correctly. Specifically, they must be copied when saving state for rollback, and they must be proxied for any instance whose state is managed by a state manager, where proxying involves creating a second class object that automaticlly notifies its owning instance whenever it is modified. Generally, this factory is only used by the implementation; second class object handling is transparent to client code. @author Abe White

        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
        }

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        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
        }
        return null;

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        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
        }

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        if (getTypeCode() != JavaTypes.COLLECTION || isLRS()) {
           _delayCapable = Boolean.FALSE;
           return _delayCapable;
        } else {
            // Verify the proxy manager is configured to handle delay loading
            ProxyManager pm = getRepository().getConfiguration().getProxyManagerInstance();
            if (pm != null) {
                _delayCapable = pm.getDelayCollectionLoading();
            } else {
                _delayCapable = Boolean.FALSE;
            }
        }
        return _delayCapable;

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        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
        }
        return null;

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        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
        }
        return null;

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        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
        }

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        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null);
        }
        return null;

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        return val;
    }


    public void storeObjectField(int field, Object curVal) {
        // copy mutable fields
        ProxyManager proxy = _sm.getBroker().getConfiguration().
            getProxyManagerInstance();
        FieldMetaData fmd = _sm.getMetaData().getField(field);
        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.ARRAY:
                _field = proxy.copyArray(curVal);
                break;
            case JavaTypes.COLLECTION:
                _field = proxy.copyCollection((Collection) curVal);
                break;
            case JavaTypes.MAP:
                _field = proxy.copyMap((Map) curVal);
                break;
            case JavaTypes.DATE:
                _field = proxy.copyDate((Date) curVal);
                break;
            case JavaTypes.OBJECT:
                _field = proxy.copyCustom(curVal);
                if (_field == null)
                    _field = curVal;
                break;
            default:
                _field = curVal;

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        return null;
    }


    public Object newFieldProxy(int field) {
        FieldMetaData fmd = _meta.getField(field);
        ProxyManager mgr = _broker.getConfiguration().
            getProxyManagerInstance();
        Object init = fmd.getInitializer();


        switch (fmd.getDeclaredTypeCode()) {
            case JavaTypes.DATE:
                return mgr.newDateProxy(fmd.getDeclaredType());
            case JavaTypes.CALENDAR:
                return mgr.newCalendarProxy(fmd.getDeclaredType(),
                    init instanceof TimeZone ? (TimeZone) init : null);
            case JavaTypes.COLLECTION:
                return mgr.newCollectionProxy(fmd.getProxyType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
            case JavaTypes.MAP:
                return mgr.newMapProxy(fmd.getProxyType(),
                    fmd.getKey().getDeclaredType(),
                    fmd.getElement().getDeclaredType(),
                    init instanceof Comparator ? (Comparator) init : null,
                        _broker.getConfiguration().getCompatibilityInstance().getAutoOff());
        }

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