Package org.datanucleus.store.mapped

Examples of org.datanucleus.store.mapped.DatastoreClass

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        ExecutionContext ec = storeMgr.getApiAdapter().getExecutionContext(fieldValue);
        JavaTypeMapping[] subMappings = pcMapping.getJavaTypeMapping();
        if (subMappings.length == 0)
        {
            // Embedded PC has no PK so must be embedded-only so use mapping from owner table
            DatastoreClass table = storeMgr.getDatastoreClass(cmd.getFullClassName(), clr);
            JavaTypeMapping ownerMapping = table.getMemberMapping(mmd);
            EmbeddedMapping embMapping = (EmbeddedMapping)ownerMapping;
            for (int k=0;k<embMapping.getNumberOfJavaTypeMappings();k++)
            {
                JavaTypeMapping subMapping = embMapping.getJavaTypeMapping(k);
                pkMappings[position] = subMapping;
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            MapTable mapTbl = (MapTable)storeMgr.getDatastoreContainerObject(mmd);
            SQLTable joinSqlTbl = stmt.innerJoin(mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(),
                mapTbl, null, mapTbl.getOwnerMapping(), null, null);
            if (valCmd != null)
            {
                DatastoreClass valTbl = storeMgr.getDatastoreClass(valCmd.getFullClassName(), clr);
                SQLTable valSqlTbl = stmt.innerJoin(joinSqlTbl, mapTbl.getValueMapping(),
                    valTbl, null, valTbl.getIdMapping(), null, null);

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

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

                SQLExpression keyIdExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTbl.getIdMapping());
                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    stmt.getQueryGenerator().bindVariable(keyVarName, keyCmd, keyIdExpr.getSQLTable(),
                        keyIdExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    stmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
            else
            {
                SQLExpression keyIdExpr = exprFactory.newExpression(stmt, joinSqlTbl, mapTbl.getKeyMapping());
                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    stmt.getQueryGenerator().bindVariable(keyVarName, keyCmd, keyIdExpr.getSQLTable(),
                        keyIdExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to key
                    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 (if present)
            DatastoreClass valTbl = storeMgr.getDatastoreClass(valCmd.getFullClassName(), 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);
            }
            SQLTable valSqlTbl = stmt.innerJoin(mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(),
                valTbl, null, ownerMapping, null, null);

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

            if (keyCmd != null)
            {
                // Add inner join to key table
                AbstractMemberMetaData valKeyMmd =
                    valCmd.getMetaDataForMember(mmd.getKeyMetaData().getMappedBy());
                DatastoreClass keyTbl = storeMgr.getDatastoreClass(keyCmd.getFullClassName(), clr);
                SQLTable keySqlTbl = stmt.innerJoin(valSqlTbl, valTbl.getMemberMapping(valKeyMmd),
                    keyTbl, null, keyTbl.getIdMapping(), null, null);

                SQLExpression keyIdExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTbl.getIdMapping());
                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    stmt.getQueryGenerator().bindVariable(keyVarName, keyCmd, keyIdExpr.getSQLTable(),
                        keyIdExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restriction to key
                    stmt.whereAnd(keyIdExpr.eq(keyExpr), true);
                }
            }
            else
            {
                AbstractMemberMetaData valKeyMmd =
                    valCmd.getMetaDataForMember(mmd.getKeyMetaData().getMappedBy());
                SQLExpression keyIdExpr = exprFactory.newExpression(stmt, valSqlTbl,
                    valTbl.getMemberMapping(valKeyMmd));
                if (keyIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    stmt.getQueryGenerator().bindVariable(keyVarName, keyCmd, keyIdExpr.getSQLTable(),
                        keyIdExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restriction to key
                    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 then to value table (if present)
            DatastoreClass keyTbl = storeMgr.getDatastoreClass(keyCmd.getFullClassName(), clr);
            AbstractMemberMetaData keyValMmd =
                keyCmd.getMetaDataForMember(mmd.getValueMetaData().getMappedBy());
            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, null, ownerMapping, null, null);

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

            if (valCmd != null)
            {
                // Add inner join to value table
                DatastoreClass valTbl = storeMgr.getDatastoreClass(valCmd.getFullClassName(), clr);
                SQLTable valSqlTbl = stmt.innerJoin(keySqlTbl, keyTbl.getMemberMapping(keyValMmd),
                    valTbl, null, valTbl.getIdMapping(), null, null);

                SQLExpression valIdExpr = exprFactory.newExpression(stmt, valSqlTbl, valTbl.getIdMapping());
                if (valIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    stmt.getQueryGenerator().bindVariable(valVarName, valCmd, valIdExpr.getSQLTable(),
                        valIdExpr.getJavaTypeMapping());
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            }
        }
        else if (mmd.getMap().getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE)
        {
            // Key stored in value table
            DatastoreClass valTbl = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
            AbstractMemberMetaData valKeyMmd =
                valCmd.getMetaDataForMember(mmd.getKeyMetaData().getMappedBy());

            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)
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = valTbl.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
            }
            else
            {
                ownerMapping = valTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }
            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);

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

            SQLExpression keyIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                valTbl.getMemberMapping(valKeyMmd));
            if (keyIsUnbound)
            {
                // Bind the variable in the QueryGenerator
                stmt.getQueryGenerator().bindVariable(keyVarName, keyCmd, keyIdExpr.getSQLTable(),
                    keyIdExpr.getJavaTypeMapping());
            }
            else
            {
                // Add restrict to key TODO Add join to keyTbl if present
                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);
            }

            AbstractMemberMetaData keyValMmd =
                keyCmd.getMetaDataForMember(mmd.getValueMetaData().getMappedBy());

            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);

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

            JavaTypeMapping keyMapping = keyTbl.getIdMapping();
            SQLExpression keyIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), keyMapping);
            if (keyIsUnbound)
            {
                // Bind the variable in the QueryGenerator
                stmt.getQueryGenerator().bindVariable(keyVarName, keyCmd, keyIdExpr.getSQLTable(),
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                }
            }
            else
            {
                // Array<PC>
                DatastoreClass elemTbl = storeMgr.getDatastoreClass(mmd.getArray().getElementType(), clr);
                subStmt = new SQLStatement(stmt, storeMgr, elemTbl, 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(), elemTbl.getIdMapping(),
                    joinTbl, null, joinTbl.getElementMapping(), null, null);

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

                SQLExpression elemIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                    elemTbl.getIdMapping());
                if (elemIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    stmt.getQueryGenerator().bindVariable(varName, elemCmd, elemIdExpr.getSQLTable(),
                        elemIdExpr.getJavaTypeMapping());
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        // Work out the real candidate table.
        // Instead of just taking the most derived table as the candidate we find the table closest to
        // the root table necessary to retrieve the requested fields
        boolean found = false;
        DatastoreClass candidateTable = classTable;
        while (candidateTable != null)
        {
            for (int i=0;i<mmds.length;i++)
            {
                JavaTypeMapping m = candidateTable.getMemberMappingInDatastoreClass(mmds[i]);
                if (m != null)
                {
                    found = true;
                    break;
                }
            }
            if (found)
            {
                break;
            }
            candidateTable = candidateTable.getSuperDatastoreClass();
        }
        if (candidateTable == null)
        {
            candidateTable = classTable;
        }
        this.table = candidateTable;
        this.key = ((AbstractClassTable)table).getPrimaryKey();

        // Extract version information, from this table and any super-tables
        DatastoreClass currentTable = table;
        while (currentTable != null)
        {
            VersionMetaData currentVermd = currentTable.getVersionMetaData();
            if (currentVermd != null)
            {
                if (currentVermd.getFieldName() == null)
                {
                    // Surrogate version stored in this table
                    fetchingSurrogateVersion = true;
                }
                else
                {
                    // Version field
                    versionFieldName = currentVermd.getFieldName();
                }
            }

            currentTable = currentTable.getSuperDatastoreClass();
        }

        // TODO Can we skip the statement generation if we know there are no selectable fields?

        // Generate the statement for the requested members
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                    if (mapping instanceof PersistableMapping)
                    {
                        depth = 1;
                        if (Modifier.isAbstract(mmd.getType().getModifiers()))
                        {
                            DatastoreClass relTable = table.getStoreManager().getDatastoreClass(mmd.getTypeName(), clr);
                            if (relTable != null && relTable.getDiscriminatorMapping(false) == null)
                            {
                                // 1-1 relation to base class with no discriminator and has subclasses
                                // hence no way of determining the exact type, hence no point in fetching it
                                String[] subclasses = table.getStoreManager().getMetaDataManager().getSubclassesForClass(mmd.getTypeName(), false);
                                if (subclasses != null && subclasses.length > 0)
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        {
            public void fetchFields(ObjectProvider esm)
            {
                // Find the (element) table storing the FK back to the owner
                boolean isPersistentInterface = storeMgr.getNucleusContext().getMetaDataManager().isPersistentInterface(elementType);
                DatastoreClass elementTable = null;
                if (isPersistentInterface)
                {
                    elementTable = storeMgr.getDatastoreClass(
                        storeMgr.getNucleusContext().getMetaDataManager().getImplementationNameForPersistentInterface(elementType), clr);
                }
                else
                {
                    elementTable = storeMgr.getDatastoreClass(elementType, clr);
                }
                if (elementTable == null)
                {
                    // "subclass-table", persisted into table of other class
                    AbstractClassMetaData[] managingCmds = storeMgr.getClassesManagingTableForClass(emd, clr);
                    if (managingCmds != null && managingCmds.length > 0)
                    {
                        // Find which of these subclasses is appropriate for this element
                        for (int i=0;i<managingCmds.length;i++)
                        {
                            Class tblCls = clr.classForName(managingCmds[i].getFullClassName());
                            if (tblCls.isAssignableFrom(esm.getObject().getClass()))
                            {
                                elementTable = storeMgr.getDatastoreClass(managingCmds[i].getFullClassName(), clr);
                                break;
                            }
                        }
                    }
                }
                if (elementTable != null)
                {
                    JavaTypeMapping externalFKMapping = elementTable.getExternalMapping(ownerMemberMetaData,
                        MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
                    if (externalFKMapping != null)
                    {
                        // The element has an external FK mapping so set the value it needs to use in the INSERT
                        esm.setAssociatedValue(externalFKMapping, sm.getObject());
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    {
        try
        {
            // TODO This doesn't take into account serialised/embedded
            // If the type has its own table just take the id mapping of its table
            DatastoreClass datastoreClass = storeMgr.getDatastoreClass(c.getName(), clr);
            return datastoreClass.getIdMapping();
        }
        catch (NoTableManagedException ex)
        {
            // Doesn't allow for whether a field is serialised/embedded so they get the default mapping only
            Class mc = getMappingClass(c, serialised, embedded, null);
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                SQLTable joinSqlTbl = stmt.innerJoin(collExpr.getSQLTable(), collExpr.getSQLTable().getTable().getIdMapping(),
                    joinTbl, null, joinTbl.getOwnerMapping(), null, null);

                if (!mmd.getCollection().isEmbeddedElement())
                {
                    DatastoreClass elemTbl = storeMgr.getDatastoreClass(elemType, clr);
                    SQLTable elemSqlTbl = null;
                    if (joinTbl.getElementMapping() instanceof ReferenceMapping &&
                        ((ReferenceMapping)joinTbl.getElementMapping()).getMappingStrategy() == ReferenceMapping.PER_IMPLEMENTATION_MAPPING)
                    {
                        JavaTypeMapping elemMapping = null;
                        JavaTypeMapping[] elemImplMappings = ((ReferenceMapping)joinTbl.getElementMapping()).getJavaTypeMapping();
                        for (int i=0;i<elemImplMappings.length;i++)
                        {
                            if (elemImplMappings[i].getType().equals(elemCmd.getFullClassName()))
                            {
                                elemMapping = elemImplMappings[i];
                                break;
                            }
                        }
                        elemSqlTbl = stmt.innerJoin(joinSqlTbl, elemMapping, joinTbl.getElementMapping(),
                            elemTbl, elemAlias, elemTbl.getIdMapping(), null, null, null);
                    }
                    else
                    {
                        elemSqlTbl = stmt.innerJoin(joinSqlTbl, joinTbl.getElementMapping(),
                            elemTbl, elemAlias, elemTbl.getIdMapping(), null, null);
                    }
                    SQLExpression elemIdExpr = exprFactory.newExpression(stmt, elemSqlTbl, elemTbl.getIdMapping());
                    if (elemIsUnbound)
                    {
                        // Bind the variable in the QueryGenerator
                        stmt.getQueryGenerator().bindVariable(varName, elemCmd, elemIdExpr.getSQLTable(),
                            elemIdExpr.getJavaTypeMapping());
                    }
                    else
                    {
                        // Add restrict to element
                        stmt.whereAnd(elemIdExpr.eq(elemExpr), true);
                    }
                }
                else
                {
                    SQLExpression elemIdExpr = exprFactory.newExpression(stmt, joinSqlTbl, joinTbl.getElementMapping());
                    if (elemIsUnbound)
                    {
                        // Bind the variable in the QueryGenerator
                        stmt.getQueryGenerator().bindVariable(varName, elemCmd, elemIdExpr.getSQLTable(),
                            elemIdExpr.getJavaTypeMapping());
                    }
                    else
                    {
                        // Add restrict to element
                        stmt.whereAnd(elemIdExpr.eq(elemExpr), true);
                    }
                }
            }
        }
        else
        {
            // FK Collection - join from owner to element
            DatastoreClass elemTbl = storeMgr.getDatastoreClass(mmd.getCollection().getElementType(), clr);
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = elemTbl.getMemberMapping(mmd.getRelatedMemberMetaData(clr)[0]);
            }
            else
            {
                ownerMapping = elemTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }
            SQLTable elemSqlTbl = stmt.innerJoin(collExpr.getSQLTable(), collExpr.getSQLTable().getTable().getIdMapping(),
                elemTbl, elemAlias, ownerMapping, null, null);

            if (elemIsUnbound)
            {
                SQLExpression elemIdExpr = null;
                if (!elemType.equals(mmd.getCollection().getElementType()))
                {
                    // Variable is defined as a subclass of the declared type so add extra join to variable type
                    DatastoreClass varTbl = storeMgr.getDatastoreClass(elemType, clr);
                    SQLTable varSqlTbl = stmt.innerJoin(elemSqlTbl, elemTbl.getIdMapping(),
                        varTbl, null, varTbl.getIdMapping(), null, null);
                    elemIdExpr = exprFactory.newExpression(stmt, varSqlTbl, varTbl.getIdMapping());
                }
                else
                {
                    elemIdExpr = exprFactory.newExpression(stmt, elemSqlTbl, elemTbl.getIdMapping());
                }
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                }
            }
            else
            {
                // Collection<PC>
                DatastoreClass elemTbl = storeMgr.getDatastoreClass(elemType, clr);
                subStmt = new SQLStatement(stmt, storeMgr, elemTbl, 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(), elemTbl.getIdMapping(),
                    joinTbl, null, joinTbl.getElementMapping(), null, null);

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

                SQLExpression elemIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                    elemTbl.getIdMapping());
                if (elemIsUnbound)
                {
                    // Bind the variable in the QueryGenerator
                    stmt.getQueryGenerator().bindVariable(varName, elemCmd, elemIdExpr.getSQLTable(),
                        elemIdExpr.getJavaTypeMapping());
                }
                else
                {
                    // Add restrict to element
                    subStmt.whereAnd(elemIdExpr.eq(elemExpr), true);
                }
            }
        }
        else
        {
            // FK Collection
            DatastoreClass elemTbl = storeMgr.getDatastoreClass(mmd.getCollection().getElementType(), clr);
            subStmt = new SQLStatement(stmt, storeMgr, elemTbl, null, null);
            subStmt.setClassLoaderResolver(clr);
            JavaTypeMapping oneMapping = storeMgr.getMappingManager().getMapping(Integer.class);
            subStmt.select(exprFactory.newLiteral(subStmt, oneMapping, 1), null);

            // Restrict to collection owner
            JavaTypeMapping ownerMapping = null;
            if (mmd.getMappedBy() != null)
            {
                ownerMapping = elemTbl.getMemberMapping(mmd.getRelatedMemberMetaData(clr)[0]);
            }
            else
            {
                ownerMapping = elemTbl.getExternalMapping(mmd, MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
            }
            SQLExpression ownerExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), ownerMapping);
            SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, collExpr.getSQLTable(),
                collExpr.getSQLTable().getTable().getIdMapping());
            subStmt.whereAnd(ownerExpr.eq(ownerIdExpr), true);

            if (elemIsUnbound)
            {
                SQLExpression elemIdExpr = null;
                if (!elemType.equals(mmd.getCollection().getElementType()))
                {
                    // Variable is defined as a subclass of the declared type so add extra join to variable type
                    DatastoreClass varTbl = storeMgr.getDatastoreClass(elemType, clr);
                    SQLTable varSqlTbl = stmt.innerJoin(subStmt.getPrimaryTable(), elemTbl.getIdMapping(),
                        varTbl, null, varTbl.getIdMapping(), null, null);
                    elemIdExpr = exprFactory.newExpression(stmt, varSqlTbl, varTbl.getIdMapping());
                }
                else
                {
                    elemIdExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(),
                        elemTbl.getIdMapping());
View Full Code Here
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  • org.datanucleus.store.mapped.expression.ClassExpression
  • org.datanucleus.store.mapped.expression.LogicSetExpression
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