Examples of org.datanucleus.store.mapped.StatementNewObjectMapping

org.datanucleus.store.mapped.StatementNewObjectMapping
Definition of the mapping of a new object definition in the results of a statement. The mappings are for the arguments to the constructor.

                }
                else if (resultExprs[i] instanceof CreatorExpression)
                {
                    processCreatorExpression((CreatorExpression)resultExprs[i]);
                    NewObjectExpression sqlExpr = (NewObjectExpression)stack.pop();
                    StatementNewObjectMapping stmtMap = getStatementMappingForNewObjectExpression(sqlExpr);
                    resultDefinition.addMappingForResultExpression(i, stmtMap);
                }
                else if (resultExprs[i] instanceof DyadicExpression)
                {
                    // Something like {a+b} perhaps. Maybe we should check for invalid expressions?

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     * @return The mapping for the new object
     */
    protected StatementNewObjectMapping getStatementMappingForNewObjectExpression(NewObjectExpression expr)
    {
        List argExprs = expr.getConstructorArgExpressions();
        StatementNewObjectMapping stmtMap = new StatementNewObjectMapping(expr.getNewClass());
        if (argExprs != null)
        {
            Iterator<SQLExpression> argIter = argExprs.iterator();
            int j = 0;
            while (argIter.hasNext())
            {
                SQLExpression argExpr = argIter.next();
                if (argExpr instanceof SQLLiteral)
                {
                    stmtMap.addConstructorArgMapping(j, ((SQLLiteral)argExpr).getValue());
                }
                else if (argExpr instanceof NewObjectExpression)
                {
                    stmtMap.addConstructorArgMapping(j,
                        getStatementMappingForNewObjectExpression((NewObjectExpression)argExpr));
                }
                else
                {
                    StatementMappingIndex idx = new StatementMappingIndex(argExpr.getJavaTypeMapping());
                    int[] cols = stmt.select(argExpr, null);
                    idx.setColumnPositions(cols);
                    stmtMap.addConstructorArgMapping(j, idx);
                }
                j++;
            }
        }
        return stmtMap;

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                    StatementMappingIndex idx = (StatementMappingIndex)stmtMap;
                    fieldValues[i] = idx.getMapping().getObject(ec, rs, idx.getColumnPositions());
                }
                else if (stmtMap instanceof StatementNewObjectMapping)
                {
                    StatementNewObjectMapping newIdx = (StatementNewObjectMapping)stmtMap;
                    fieldValues[i] = getValueForNewObject(newIdx, ec, rs);
                }
                else if (stmtMap instanceof StatementClassMapping)
                {
                    StatementClassMapping classMap = (StatementClassMapping)stmtMap;

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Related Classes of org.datanucleus.store.mapped.StatementNewObjectMapping

org.datanucleus.store.rdbms.query.QueryToSQLMapper

org.datanucleus.store.rdbms.query.ResultClassROF

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