Examples of org.apache.openjpa.kernel.OpenJPAStateManager

org.apache.openjpa.kernel.OpenJPAStateManager
Interface implemented by OpenJPA state managers. Each state manager manages the state of a single persistence capable instance. The state manager is also responsible for all communications about the instance to the {@link StoreManager}. The fetchXXXField and storeXXXField methods can be used to get and set fields of the managed persistent object. Most back-end code, however, should use the similar fetchXXX and storeXXX methods in place of the field methods. These methods function just like the field methods, but also pass the value through the externalizer and factory the field may have. @author Abe White

        Map mapObj = (Map)rel.fetchObjectField(mapField.getIndex());
        Object keyObj = getMapKeyObj(mapObj, sm.getPersistenceCapable());
        ValueMapping key = mapField.getKeyMapping();
        if (!key.isEmbedded()) {
            if (keyObj instanceof PersistenceCapable) {
                OpenJPAStateManager keySm = RelationStrategies.
                    getStateManager(keyObj, store.getContext());
                // key is an entity
                ForeignKey fk = mapField.getKeyMapping().
                    getForeignKey();
                ColumnIO io = new ColumnIO();

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    public void update(OpenJPAStateManager sm, JDBCStore store, RowManager rm)
        throws SQLException {
        if (field.getMappedBy() != null)
            return;


        OpenJPAStateManager rel = RelationStrategies.getStateManager
            (sm.fetchObjectField(field.getIndex()), store.getContext());


        if (field.getJoinDirection() == field.JOIN_INVERSE) {
            nullInverse(sm, rm);
            updateInverse(sm, rel, store, rm);

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        if (field.getMappedBy() != null)
            return;


        if (field.getJoinDirection() == field.JOIN_INVERSE) {
            if (sm.getLoaded().get(field.getIndex())) {
                OpenJPAStateManager rel = RelationStrategies.getStateManager(sm.
                    fetchObjectField(field.getIndex()), store.getContext());
                updateInverse(sm, rel, store, rm);
            } else
                nullInverse(sm, rm);
        } else {
            field.deleteRow(sm, store, rm);


            // if our foreign key has a delete action, we need to set the
            // related object so constraints can be evaluated
            OpenJPAStateManager rel = RelationStrategies.getStateManager
                (sm.fetchObjectField(field.getIndex()), store.getContext());
            if (rel != null) {
                ForeignKey fk = field.getForeignKey((ClassMapping)
                    rel.getMetaData());
                if (fk.getDeleteAction() == ForeignKey.ACTION_RESTRICT ||
                    fk.getDeleteAction() == ForeignKey.ACTION_CASCADE) {
                    Row row = field.getRow(sm, store, rm, Row.ACTION_DELETE);
                    row.setForeignKey(fk, null, rel);
                    // this is for bi-directional maps, the key and value of the

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                // get the StateManager of this toMany value
                // and find the value of the inverse mappedBy field (Customer)
                // for this toMacdny field
                PersistenceCapable pc = (PersistenceCapable)
                    ((Collection) coll).iterator().next();
                OpenJPAStateManager sm1 = (OpenJPAStateManager) pc.
                    pcGetStateManager();
                
                ClassMapping clm = ((ClassMapping) sm1.getMetaData());
                FieldMapping fm = (FieldMapping) clm.getField(
                    mappedByFieldMapping.getName());
                if (fm == mappedByFieldMapping)
                    res.setMappedByValue(sm1.fetchObject(fm.getIndex()));
            } else {
                res.setMappedByValue(null);
            }
        }        
    }

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                        itr.hasNext();) {
                        PersistenceCapable pc = (PersistenceCapable) itr.next();
                        if (pc == null) {
                            continue;
                        }
                        OpenJPAStateManager sm = (OpenJPAStateManager) pc.pcGetStateManager();
                        ClassMapping cm =
                            (ClassMapping) _conf.getMetaDataRepositoryInstance().getCachedMetaData(pc.getClass());
                        FieldMapping[] fmd = cm.getFieldMappings();
                        for (int j = 0; j < fmd.length; j++) {
                            // don't check the oids for basic fields.
                            if (fmd[j].isTypePC()) {
                                Object oid = sm.getIntermediate(fmd[j].getIndex());
                                // if oid was setIntermediate() previously and it is the same as the owner,generate
                                // then set the inverse relation
                                if (oid != null && oid.equals(owner.getObjectId())) {
                                    sm.storeObject(fmd[j].getIndex(), owner.getPersistenceCapable());
                                    break;
                                }
                            }
                        }
                    }

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     */
    private boolean isBatchDisabled(RowImpl row) {
        boolean rtnVal = true;
        int limit = getBatchLimit();
        if ((limit < 0 || limit > 1) && !isBatchDisabled()) {
            OpenJPAStateManager sm = row.getPrimaryKey();
            ClassMapping cmd = null;
            if (sm != null)
                cmd = (ClassMapping) sm.getMetaData();
            Column[] autoAssign = null;
            if (row.getAction() == Row.ACTION_INSERT)
                autoAssign = row.getTable().getAutoAssignedColumns();
            // validate batch capability
            rtnVal = _dict

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                    .getMetaDataRepositoryInstance().getMetaData(a.getClass(),
                    null, false);
            FieldMetaData fmd = meta.getField("date");
            d = (Date) data.getData(fmd.getIndex());
            Broker broker = JPAFacadeHelper.toBroker(em1);
            OpenJPAStateManager sm = broker.getStateManager(a);
            assertTrue(sm == ((ProxyDate) a.getDate()).getOwner());
            assertEquals(Date.class, d.getClass());
        }
        finally {
            endEm(em0);

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    }
    
    protected void setObjectId(List vals, Column[] autoAssign,
        DBIdentifier[] autoAssignColNames, RowImpl row) 
        throws SQLException{
        OpenJPAStateManager sm = row.getPrimaryKey();
        ClassMapping mapping = (ClassMapping) sm.getMetaData();
        Object val = null;
        for (int i = 0; i < autoAssign.length; i++) {
            if (_dict.supportsGetGeneratedKeys && vals != null && 
                vals.size() > 0)
                val = vals.get(i);
            else
                val = _dict.getGeneratedKey(autoAssign[i], _conn);
            mapping.assertJoinable(autoAssign[i]).setAutoAssignedValue(sm,
                _store, autoAssign[i], val);
        }
        sm.setObjectId(
            ApplicationIds.create(sm.getPersistenceCapable(), mapping));
    }

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                        itr.hasNext();) {
                        PersistenceCapable pc = (PersistenceCapable) itr.next();
                        if (pc == null) {
                            continue;
                        }
                        OpenJPAStateManager sm = (OpenJPAStateManager) pc.pcGetStateManager();
                        ClassMapping cm =
                            (ClassMapping) _conf.getMetaDataRepositoryInstance().getCachedMetaData(pc.getClass());
                        FieldMapping[] fmd = cm.getFieldMappings();
                        for (int j = 0; j < fmd.length; j++) {
                            // don't check the oids for basic fields.
                            if (fmd[j].isTypePC()) {
                                Object oid = sm.getIntermediate(fmd[j].getIndex());
                                // if oid was setIntermediate() previously and it is the same as the owner,generate
                                // then set the inverse relation
                                if (oid != null && oid.equals(owner.getObjectId())) {
                                    sm.storeObject(fmd[j].getIndex(), owner.getPersistenceCapable());
                                    break;
                                }
                            }
                        }
                    }

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    public boolean contains(Object entity) {
        assertNotCloseInvoked();
        if (entity == null)
            return false;
        OpenJPAStateManager sm = _broker.getStateManager(entity);
        if (sm == null
            && !ImplHelper.isManagedType(getConfiguration(), entity.getClass()))
            throw new ArgumentException(_loc.get("not-entity",
                entity.getClass()), null, null, true);
        return sm != null && !sm.isDeleted();
    }

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