Exemple #1
0
        private static CreateTableColumn GetColumn(
            EsperEPL2GrammarParser.CreateTableColumnContext ctx,
            IDictionary<ITree, ExprNode> astExprNodeMap,
            StatementSpecMapEnv mapEnv)
        {
            var columnName = ctx.n.Text;

            ExprNode optExpression = null;
            if (ctx.builtinFunc() != null || ctx.chainable() != null)
            {
                optExpression = ASTExprHelper.ExprCollectSubNodes(ctx, 0, astExprNodeMap)[0];
            }

            var optType = ASTClassIdentifierHelper.Walk(ctx.classIdentifierWithDimensions());

            var primaryKey = false;
            if (ctx.p != null)
            {
                if (!string.Equals(ctx.p.Text, "primary", StringComparison.InvariantCultureIgnoreCase))
                {
                    throw ASTWalkException.From("Invalid keyword '" + ctx.p.Text + "' encountered, expected 'primary key'");
                }

                if (!string.Equals(ctx.k.Text, "key", StringComparison.InvariantCultureIgnoreCase))
                {
                    throw ASTWalkException.From("Invalid keyword '" + ctx.k.Text + "' encountered, expected 'primary key'");
                }

                primaryKey = true;
            }

            IList<AnnotationDesc> annots = new EmptyList<AnnotationDesc>();
            if (ctx.annotationEnum() != null)
            {
                annots = new List<AnnotationDesc>(ctx.annotationEnum().Length);
                foreach (EsperEPL2GrammarParser.AnnotationEnumContext anctx in ctx.annotationEnum())
                {
                    annots.Add(ASTAnnotationHelper.Walk(anctx, mapEnv.ImportService));
                }
            }

            if (ctx.typeExpressionAnnotation() != null)
            {
                if (annots.IsEmpty())
                {
                    annots = new List<AnnotationDesc>();
                }

                foreach (EsperEPL2GrammarParser.TypeExpressionAnnotationContext anno in ctx.typeExpressionAnnotation())
                {
                    annots.Add(new AnnotationDesc(anno.n.Text, anno.v.Text));
                }
            }

            return new CreateTableColumn(columnName, optExpression, optType, annots, primaryKey);
        }
        public static IList<ColumnDesc> GetColTypeList(EsperEPL2GrammarParser.CreateColumnListContext ctx)
        {
            if (ctx == null)
            {
                return new EmptyList<ColumnDesc>();
            }

            IList<ColumnDesc> result = new List<ColumnDesc>(ctx.createColumnListElement().Length);
            foreach (var colctx in ctx.createColumnListElement())
            {
                var colname = colctx.classIdentifier();
                var name = ASTUtil.UnescapeClassIdent(colname);
                var classIdent = ASTClassIdentifierHelper.Walk(colctx.classIdentifierWithDimensions());
                result.Add(new ColumnDesc(name, classIdent?.ToEPL()));
            }

            return result;
        }