Examples of org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory.newExpression()

Package org.datanucleus.store.rdbms.sql.expression

Class org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory

Examples of org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory.newExpression()

org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory.newExpression()
Factory for an expression representing a mapping on a table. @param stmt The statement @param sqlTbl The table @param mapping The mapping @return The expression


            // Process discriminator for any additional conditions
            JavaTypeMapping discrimMapping = targetTable.getTable().getDiscriminatorMapping(false);
            if (discrimMapping != null && discrimValues != null)
            {
                SQLExpression discrimExpr = factory.newExpression(this, targetTable, discrimMapping);
                BooleanExpression discrimCondition = null;
                for (int i=0;i<discrimValues.length;i++)
                {
                    SQLExpression discrimVal = factory.newLiteral(this, discrimMapping, discrimValues[i]);
                    BooleanExpression condition = discrimExpr.eq(discrimVal);

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                AbstractClassMetaData targetCmd = 
                    storeMgr.getNucleusContext().getMetaDataManager().getMetaDataForClass(className, clr);
                discriminatorValue = targetCmd.getInheritanceMetaData().getDiscriminatorMetaData().getValue();
            }


            SQLExpression discExpr = factory.newExpression(stmt, stmt.getPrimaryTable(), discriminatorMapping);
            SQLExpression discVal = factory.newLiteral(stmt, discriminatorMapping, discriminatorValue);
            stmt.whereAnd(discExpr.eq(discVal), false);
        }


        // Eliminate any subclasses (catered for in separate UNION statement)

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                    JavaTypeMapping subclassIdMapping = subclassTables[i].getIdMapping();
                    SQLTable sqlTableSubclass = 
                        stmt.leftOuterJoin(null, tableIdMapping, subclassTables[i], null, subclassIdMapping,
                            null, stmt.getPrimaryTable().getGroupName());


                    SQLExpression subclassIdExpr = factory.newExpression(stmt, sqlTableSubclass, subclassIdMapping);
                    SQLExpression nullExpr = new NullLiteral(stmt, null, null, null);
                    stmt.whereAnd(subclassIdExpr.eq(nullExpr), false);
                }
            }
        }

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                    JavaTypeMapping subclassIdMapping = subclassTables[i].getIdMapping();
                    SQLTable sqlTableSubclass = 
                        stmt.leftOuterJoin(null, joinElementMapping, subclassTables[i], null,
                            subclassIdMapping, null, stmt.getPrimaryTable().getGroupName());


                    SQLExpression subclassIdExpr = factory.newExpression(stmt, sqlTableSubclass, subclassIdMapping);
                    SQLExpression nullExpr = new NullLiteral(stmt, null, null, null);
                    stmt.whereAnd(subclassIdExpr.eq(nullExpr), false);
                }
            }
        }

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        int inputParamNum = 1;
        if (table.getIdentityType() == IdentityType.DATASTORE)
        {
            // Datastore identity value for input
            JavaTypeMapping datastoreIdMapping = table.getDatastoreObjectIdMapping();
            SQLExpression expr = exprFactory.newExpression(sqlStatement, sqlStatement.getPrimaryTable(), 
                datastoreIdMapping);
            SQLExpression val = exprFactory.newLiteralParameter(sqlStatement, datastoreIdMapping, null, "ID");
            sqlStatement.whereAnd(expr.eq(val), true);


            StatementMappingIndex datastoreIdx =

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                JavaTypeMapping pkMapping = table.getMemberMappingInDatastoreClass(mmd);
                if (pkMapping == null)
                {
                    pkMapping = table.getMemberMapping(mmd);
                }
                SQLExpression expr = exprFactory.newExpression(sqlStatement, sqlStatement.getPrimaryTable(),
                    pkMapping);
                SQLExpression val = exprFactory.newLiteralParameter(sqlStatement, pkMapping, null, "PK" + i);
                sqlStatement.whereAnd(expr.eq(val), true);


                StatementMappingIndex pkIdx = mappingDefinition.getMappingForMemberPosition(pkNums[i]);

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        SQLExpressionFactory exprFactory = storeMgr.getSQLExpressionFactory();
        if (cmd.getIdentityType() == IdentityType.DATASTORE)
        {
            // Datastore identity value for input
            JavaTypeMapping datastoreIdMapping = table.getDatastoreObjectIdMapping();
            SQLExpression expr = exprFactory.newExpression(sqlStatement, sqlStatement.getPrimaryTable(), 
                datastoreIdMapping);
            SQLExpression val = exprFactory.newLiteralParameter(sqlStatement, datastoreIdMapping, null, "ID");
            sqlStatement.whereAnd(expr.eq(val), true);


            StatementMappingIndex datastoreIdx = mappingDefinition.getMappingForMemberPosition(StatementClassMapping.MEMBER_DATASTORE_ID);

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            int[] pkNums = cmd.getPKMemberPositions();
            for (int i=0;i<pkNums.length;i++)
            {
                AbstractMemberMetaData mmd = cmd.getMetaDataForManagedMemberAtAbsolutePosition(pkNums[i]);
                JavaTypeMapping pkMapping = table.getMemberMapping(mmd);
                SQLExpression expr = exprFactory.newExpression(sqlStatement, sqlStatement.getPrimaryTable(),
                    pkMapping);
                SQLExpression val = exprFactory.newLiteralParameter(sqlStatement, pkMapping, null, "PK" + i);
                sqlStatement.whereAnd(expr.eq(val), true);


                StatementMappingIndex pkIdx = mappingDefinition.getMappingForMemberPosition(pkNums[i]);

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