Examples of org.datanucleus.store.mapped.DatastoreClass

org.datanucleus.store.mapped.DatastoreClass
Representation of a Java class in a datastore. In the case of RDBMS this will be a table (primary or secondary). In the case of a file-based structure this may be a directory.

                }
            }
            else
            {
                // Map<?, PC>
                DatastoreClass valTbl = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
                subStmt = new SQLStatement(stmt, storeMgr, valTbl, null, null);
                subStmt.setClassLoaderResolver(clr);
                JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
                subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


                // Join to join table
                SQLTable joinSqlTbl = subStmt.innerJoin(subStmt.getPrimaryTable(), valTbl.getIdMapping(),
                    joinTbl, null, joinTbl.getValueMapping(), null, null);


                // Restrict to map owner
                JavaTypeMapping ownerMapping = joinTbl.getOwnerMapping();
                SQLExpression ownerExpr = exprFactory.newExpression(subStmt, joinSqlTbl, ownerMapping);
                SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                    mapExpr.getSQLTable().getTable().getIdMapping());
                subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


                if (valIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    valExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valTbl.getIdMapping());
                    stmt.getQueryGenerator().bindVariable(varName, valCmd, valExpr.getSQLTable(), 
                        valExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to value
                    SQLExpression valIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                        valTbl.getIdMapping());
                    subStmt.whereAnd(valIdExpr.eq(valExpr), true);
                }
            }
        }
        else if (mmd.getMap().getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE)
        {
            // Key stored in value table
            DatastoreClass valTbl = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = valTbl.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
            }
            else
            {
                ownerMapping = valTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }


            subStmt = new SQLStatement(stmt, storeMgr, valTbl, null, null);
            subStmt.setClassLoaderResolver(clr);
            JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
            subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


            // Restrict to map owner (on value table)
            SQLExpression ownerExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), ownerMapping);
            SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                mapExpr.getSQLTable().getTable().getIdMapping());
            subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


            if (valIsUnbound)
            {
                // Bind the variable in the QueryGenerator
                valExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valTbl.getIdMapping());
                stmt.getQueryGenerator().bindVariable(varName, valCmd, valExpr.getSQLTable(), 
                    valExpr.getJavaTypeMapping());
            }
            else
            {
                // Add restrict to value
                JavaTypeMapping valMapping = valTbl.getIdMapping();
                SQLExpression valIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valMapping);
                subStmt.whereAnd(valIdExpr.eq(valExpr), true);
            }
        }
        else if (mmd.getMap().getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY)
        {
            AbstractClassMetaData keyCmd = mmd.getMap().getKeyClassMetaData(clr, mmgr);
            DatastoreClass keyTbl = storeMgr.getDatastoreClass(mmd.getMap().getKeyType(), clr);
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = keyTbl.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getMappedBy()));
            }
            else
            {
                ownerMapping = keyTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }


            AbstractMemberMetaData keyValMmd =
                keyCmd.getMetaDataForMember(mmd.getValueMetaData().getMappedBy());
            if (valCmd == null)
            {
                subStmt = new SQLStatement(stmt, storeMgr, keyTbl, null, null);
                subStmt.setClassLoaderResolver(clr);
                JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
                subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


                // Restrict to map owner (on key table)
                SQLExpression ownerExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), ownerMapping);
                SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                    mapExpr.getSQLTable().getTable().getIdMapping());
                subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


                if (valIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    valExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                        keyTbl.getMemberMapping(keyValMmd));
                    stmt.getQueryGenerator().bindVariable(varName, valCmd, valExpr.getSQLTable(), 
                        valExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to value
                    JavaTypeMapping valMapping = keyTbl.getMemberMapping(keyValMmd);
                    SQLExpression valIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valMapping);
                    subStmt.whereAnd(valIdExpr.eq(valExpr), true);
                }
            }
            else
            {
                DatastoreClass valTbl = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
                subStmt = new SQLStatement(stmt, storeMgr, valTbl, null, null);
                subStmt.setClassLoaderResolver(clr);
                JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
                subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


                // Join to key table
                SQLTable keySqlTbl = subStmt.innerJoin(subStmt.getPrimaryTable(), valTbl.getIdMapping(),
                    keyTbl, null, keyTbl.getMemberMapping(keyValMmd), null, null);


                // Restrict to map owner (on key table)
                SQLExpression ownerExpr = exprFactory.newExpression(subStmt, keySqlTbl, ownerMapping);
                SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                    mapExpr.getSQLTable().getTable().getIdMapping());
                subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


                if (valIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    valExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valTbl.getIdMapping());
                    stmt.getQueryGenerator().bindVariable(varName, valCmd, valExpr.getSQLTable(), 
                        valExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to value
                    SQLExpression valIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                        valTbl.getIdMapping());
                    subStmt.whereAnd(valIdExpr.eq(valExpr), true);
                }
            }
        }

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                String[] implNames = MetaDataUtils.getInstance().getImplementationNamesForReferenceField(ownerMemberMetaData,
                    FieldRole.ROLE_ARRAY_ELEMENT, clr, storeMgr.getMetaDataManager());
                elementInfo = new ElementInfo[implNames.length];
                for (int i=0;i<implNames.length;i++)
                {
                    DatastoreClass table = storeMgr.getDatastoreClass(implNames[i], clr);
                    AbstractClassMetaData cmd = storeMgr.getNucleusContext().getMetaDataManager().getMetaDataForClass(implNames[i], clr);
                    elementInfo[i] = new ElementInfo(cmd, table);
                }
            }
            else

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                String[] implNames = MetaDataUtils.getInstance().getImplementationNamesForReferenceField(
                    ownerMemberMetaData, FieldRole.ROLE_COLLECTION_ELEMENT, clr, storeMgr.getMetaDataManager());
                elementInfo = new ElementInfo[implNames.length];
                for (int i = 0; i < implNames.length; i++)
                {
                    DatastoreClass table = storeMgr.getDatastoreClass(implNames[i], clr);
                    AbstractClassMetaData cmd =
                        storeMgr.getNucleusContext().getMetaDataManager().getMetaDataForClass(implNames[i], clr);
                    elementInfo[i] = new ElementInfo(cmd, table);
                }
            }

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                // Return value expression
                if (mapmd.getValueClassMetaData(clr, mmgr) != null)
                {
                    // Persistable value so join to its table
                    DatastoreClass valTable = stmt.getRDBMSManager().getDatastoreClass(mapmd.getValueType(), clr);
                    SQLTable valueSqlTbl = stmt.innerJoin(joinSqlTbl, joinTbl.getValueMapping(),
                        valTable, null, valTable.getIdMapping(), null, null);


                    return exprFactory.newExpression(stmt, valueSqlTbl, valTable.getIdMapping());
                }
                else
                {
                    // Return mapping for the value in the join table
                    SQLExpression valueExpr = exprFactory.newExpression(stmt, joinSqlTbl, joinTbl.getValueMapping());
                    return valueExpr;
                }
            }
            else if (mapmd.getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE)
            {
                // Key stored in value table, so join to value table, add condition on key, and return value
                DatastoreClass valTable = stmt.getRDBMSManager().getDatastoreClass(mapmd.getValueType(), clr);
                AbstractClassMetaData valCmd = mapmd.getValueClassMetaData(clr, mmgr);


                // Add join to value table
                SQLTable valSqlTbl = stmt.innerJoin(mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(),
                    valTable, null, valTable.getIdMapping(), null, null);


                // Add condition on key
                String keyFieldName = mmd.getKeyMetaData().getMappedBy();
                AbstractMemberMetaData valKeyMmd = valCmd.getMetaDataForMember(keyFieldName);
                JavaTypeMapping keyMapping = valTable.getMemberMapping(valKeyMmd);
                SQLExpression keyExpr = exprFactory.newExpression(stmt, valSqlTbl, keyMapping);
                stmt.whereAnd(keyExpr.eq(keyValExpr), true);


                // Return value expression
                SQLExpression valueExpr = exprFactory.newExpression(stmt, valSqlTbl, valTable.getIdMapping());
                return valueExpr;
            }
            else if (mapmd.getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY)
            {
                // Value stored in key table, so join to key table, add condition on key, and return value
                DatastoreClass keyTable = stmt.getRDBMSManager().getDatastoreClass(mapmd.getKeyType(), clr);
                AbstractClassMetaData keyCmd = mapmd.getKeyClassMetaData(clr, mmgr);


                // Add join to key table
                SQLTable keySqlTbl = stmt.innerJoin(mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(),
                    keyTable, null, keyTable.getIdMapping(), null, null);


                // Add condition on key
                SQLExpression keyExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTable.getIdMapping());
                stmt.whereAnd(keyExpr.eq(keyValExpr), true);


                // Return value expression
                String valueFieldName = mmd.getValueMetaData().getMappedBy();
                AbstractMemberMetaData valKeyMmd = keyCmd.getMetaDataForMember(valueFieldName);
                JavaTypeMapping valueMapping = keyTable.getMemberMapping(valKeyMmd);
                SQLExpression valueExpr = exprFactory.newExpression(stmt, keySqlTbl, valueMapping);
                return valueExpr;
            }
        }
        throw new NucleusException("Map.get() for the filter is not supported for " + mapExpr +

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                mapTbl, null, mapTbl.getOwnerMapping(), null, null);
            if (keyCmd != null)
            {
                if (keyIsUnbound)
                {
                    DatastoreClass keyTbl = storeMgr.getDatastoreClass(keyCmd.getFullClassName(), clr);
                    SQLTable keySqlTbl = stmt.innerJoin(joinSqlTbl, mapTbl.getKeyMapping(), 
                        keyTbl, keyAlias, keyTbl.getIdMapping(), null, null);


                    // Bind the variable in the QueryGenerator
                    keyExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTbl.getIdMapping());
                    stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(), 
                        keyExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    SQLExpression keyIdExpr = exprFactory.newExpression(stmt, joinSqlTbl, mapTbl.getKeyMapping());
                    stmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
            else
            {
                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    keyExpr = exprFactory.newExpression(stmt, joinSqlTbl, mapTbl.getKeyMapping());
                    stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(), 
                        keyExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    SQLExpression keyIdExpr = exprFactory.newExpression(stmt, joinSqlTbl, mapTbl.getKeyMapping());
                    stmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
        }
        else if (mmd.getMap().getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE)
        {
            // Map formed in value table - add join to value table, then to key table
            AbstractClassMetaData valCmd = mmd.getMap().getValueClassMetaData(clr, mmgr);
            DatastoreClass valTbl = storeMgr.getDatastoreClass(valCmd.getFullClassName(), clr);
            AbstractMemberMetaData valKeyMmd =
                valCmd.getMetaDataForMember(mmd.getKeyMetaData().getMappedBy());
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = valTbl.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
            }
            else
            {
                ownerMapping = valTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }


            SQLTable valSqlTbl = stmt.innerJoin(mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(),
                valTbl, null, ownerMapping, null, null);


            if (keyCmd != null)
            {
                DatastoreClass keyTbl = storeMgr.getDatastoreClass(keyCmd.getFullClassName(), clr);
                SQLTable keySqlTbl = stmt.innerJoin(valSqlTbl, valTbl.getMemberMapping(valKeyMmd),
                    keyTbl, keyAlias, keyTbl.getIdMapping(), null, null);


                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    keyExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTbl.getIdMapping());
                    stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(), 
                        keyExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    SQLExpression keyIdExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTbl.getIdMapping());
                    stmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
            else
            {
                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    keyExpr = exprFactory.newExpression(stmt, valSqlTbl, valTbl.getMemberMapping(valKeyMmd));
                    stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(), 
                        keyExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    SQLExpression keyIdExpr = exprFactory.newExpression(stmt, valSqlTbl, valTbl.getMemberMapping(valKeyMmd));
                    stmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
        }
        else if (mmd.getMap().getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY)
        {
            // Map formed in key table - add join to key table
            DatastoreClass keyTbl = storeMgr.getDatastoreClass(keyCmd.getFullClassName(), clr);
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = keyTbl.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getMappedBy()));
            }
            else
            {
                ownerMapping = keyTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }
            SQLTable keySqlTbl = stmt.innerJoin(mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(),
                keyTbl, keyAlias, ownerMapping, null, null);


            if (keyIsUnbound)
            {
                // Bind the variable in the QueryGenerator
                keyExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTbl.getIdMapping());
                stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(), 
                    keyExpr.getJavaTypeMapping());
            }
            else
            {
                // Add restrict to key
                SQLExpression keyIdExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTbl.getIdMapping());
                stmt.whereAnd(keyIdExpr.eq(keyExpr), true);
            }
        }


        JavaTypeMapping m = exprFactory.getMappingForType(boolean.class, true);

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                }
            }
            else
            {
                // Map<PC, ?>
                DatastoreClass keyTbl = storeMgr.getDatastoreClass(mmd.getMap().getKeyType(), clr);
                subStmt = new SQLStatement(stmt, storeMgr, keyTbl, null, null);
                subStmt.setClassLoaderResolver(clr);
                JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
                subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


                // Join to join table
                SQLTable joinSqlTbl = subStmt.innerJoin(subStmt.getPrimaryTable(), keyTbl.getIdMapping(),
                    joinTbl, null, joinTbl.getKeyMapping(), null, null);


                // Restrict to map owner
                JavaTypeMapping ownerMapping = joinTbl.getOwnerMapping();
                SQLExpression ownerExpr = exprFactory.newExpression(subStmt, joinSqlTbl, ownerMapping);
                SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                    mapExpr.getSQLTable().getTable().getIdMapping());
                subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    keyExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), keyTbl.getIdMapping());
                    stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(),
                        keyExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    SQLExpression keyIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                        keyTbl.getIdMapping());
                    subStmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
        }
        else if (mmd.getMap().getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE)
        {
            // Key stored in value table
            AbstractClassMetaData valCmd = mmd.getMap().getValueClassMetaData(clr, mmgr);
            DatastoreClass valTbl = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = valTbl.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
            }
            else
            {
                ownerMapping = valTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }
            AbstractMemberMetaData valKeyMmd =
                valCmd.getMetaDataForMember(mmd.getKeyMetaData().getMappedBy());
            if (keyCmd == null)
            {
                subStmt = new SQLStatement(stmt, storeMgr, valTbl, null, null);
                subStmt.setClassLoaderResolver(clr);
                JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
                subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


                // Restrict to map owner (on value table)
                SQLExpression ownerExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), ownerMapping);
                SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                    mapExpr.getSQLTable().getTable().getIdMapping());
                subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    keyExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valTbl.getMemberMapping(valKeyMmd));
                    stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(),
                        keyExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    JavaTypeMapping keyMapping = valTbl.getMemberMapping(valKeyMmd);
                    SQLExpression elemIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), keyMapping);
                    subStmt.whereAnd(elemIdExpr.eq(keyExpr), true);
                }
            }
            else
            {
                DatastoreClass keyTbl = storeMgr.getDatastoreClass(mmd.getMap().getKeyType(), clr);
                subStmt = new SQLStatement(stmt, storeMgr, keyTbl, null, null);
                subStmt.setClassLoaderResolver(clr);
                JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
                subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


                // Join to value table
                SQLTable valSqlTbl = subStmt.innerJoin(subStmt.getPrimaryTable(), keyTbl.getIdMapping(),
                    valTbl, null, valTbl.getMemberMapping(valKeyMmd), null, null);


                // Restrict to map owner (on value table)
                SQLExpression ownerExpr = exprFactory.newExpression(subStmt, valSqlTbl, ownerMapping);
                SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                    mapExpr.getSQLTable().getTable().getIdMapping());
                subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    keyExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), keyTbl.getIdMapping());
                    stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(),
                        keyExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    SQLExpression keyIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                        keyTbl.getIdMapping());
                    subStmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
        }
        else if (mmd.getMap().getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY)
        {
            DatastoreClass keyTbl = storeMgr.getDatastoreClass(mmd.getMap().getKeyType(), clr);
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = keyTbl.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getMappedBy()));
            }
            else
            {
                ownerMapping = keyTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }


            subStmt = new SQLStatement(stmt, storeMgr, keyTbl, null, null);
            subStmt.setClassLoaderResolver(clr);
            JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
            subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);


            // Restrict to map owner (on key table)
            SQLExpression ownerExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), ownerMapping);
            SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(),
                mapExpr.getSQLTable().getTable().getIdMapping());
            subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);


            if (keyIsUnbound)
            {
                // Bind the variable in the QueryGenerator
                keyExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), keyTbl.getIdMapping());
                stmt.getQueryGenerator().bindVariable(varName, keyCmd, keyExpr.getSQLTable(),
                    keyExpr.getJavaTypeMapping());
            }
            else
            {
                // Add restrict to key
                JavaTypeMapping keyMapping = keyTbl.getIdMapping();
                SQLExpression keyIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), keyMapping);
                subStmt.whereAnd(keyIdExpr.eq(keyExpr), true);
            }
        }

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                elemMapping = ((CollectionTable)listTbl).getElementMapping();
            }
            else
            {
                // FK List
                DatastoreClass elemTbl = storeMgr.getDatastoreClass(mmd.getCollection().getElementType(), clr);
                listTbl = elemTbl;


                if (relatedMmds != null)
                {
                    ownerMapping = elemTbl.getMemberMapping(relatedMmds[0]);
                    indexMapping = elemTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_INDEX);
                    elemMapping = elemTbl.getIdMapping();
                }
                else
                {
                    ownerMapping = elemTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
                    indexMapping = elemTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_INDEX);
                    elemMapping = elemTbl.getIdMapping();
                }
            }
        }


        SQLStatement subStmt = new SQLStatement(stmt, storeMgr, listTbl, null, null);

View Full Code Here

            return valueExpr;
        }
        else
        {
            // FK List
            DatastoreClass elementTbl = storeMgr.getDatastoreClass(mmd.getCollection().getElementType(), clr);


            // Add join to element table
            JavaTypeMapping targetMapping = null;
            JavaTypeMapping orderMapping = null;
            if (relatedMmds != null)
            {
                targetMapping = elementTbl.getMemberMapping(relatedMmds[0]);
                orderMapping = elementTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_INDEX);
            }
            else
            {
                targetMapping = elementTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
                orderMapping = elementTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_INDEX);
            }
            SQLTable elemSqlTbl = stmt.innerJoin(listExpr.getSQLTable(), listExpr.getSQLTable().getTable().getIdMapping(),
                elementTbl, null, targetMapping, null, null);


            // Add condition on index
            SQLExpression idxSqlExpr = exprFactory.newExpression(stmt, elemSqlTbl, orderMapping);
            stmt.whereAnd(idxSqlExpr.eq(idxExpr), true);


            // Return element expression
            return exprFactory.newExpression(stmt, elemSqlTbl, elementTbl.getIdMapping());
        }
    }

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        ExecutionContext ec = sm.getExecutionContext();
        ClassLoaderResolver clr = ec.getClassLoaderResolver();


        AbstractMemberMetaData mmd = 
            sm.getClassMetaData().getMetaDataForManagedMemberAtAbsolutePosition(fieldNumber);
        DatastoreClass table = rdbmsMgr.getDatastoreClass(sm.getObject().getClass().getName(), clr);
        JavaTypeMapping fieldMapping = table.getMemberMapping(mmd);
        if (fieldMapping != null)
        {
            if (fieldMapping instanceof InterfaceMapping)
            {
                // 1-1 Interface field

View Full Code Here

        }


        Iterator it = datastoreClasses.iterator();
        while (it.hasNext())
        {
            DatastoreClass refTable = (DatastoreClass)it.next();
            JavaTypeMapping refMapping = refTable.getMemberMapping(fmd.getMappedBy());
            if (refMapping.isNullable()) // Only clear the references that can be cleared
            {
                // Create a statement to clear the link from the previous related object
                StringBuffer clearLinkStmt = new StringBuffer("UPDATE " + refTable.toString() + " SET ");
                for (int j=0;j<refMapping.getNumberOfDatastoreMappings();j++)
                {
                    if (j > 0)
                    {
                        clearLinkStmt.append(",");

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com.google.appengine.datanucleus.DatastorePersistenceHandler

com.google.appengine.datanucleus.EntityUtils

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com.google.appengine.datanucleus.mapping.DependentDeleteRequest

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org.datanucleus.store.appengine.DatastorePersistenceHandler

org.datanucleus.store.appengine.DatastoreTable

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org.datanucleus.store.mapped.expression.ClassExpression

org.datanucleus.store.mapped.expression.LogicSetExpression

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