DeveelDbLanguage.cs

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using System;
using System.Linq.Expressions;
using System.Reflection;

using IQToolkit;
using IQToolkit.Data.Common;

namespace Deveel.Data.Linq {
    class DeveelDbLanguage : QueryLanguage {
        private readonly DeveelDbTypeSystem typeSystem;

        public DeveelDbLanguage() {
            typeSystem = new DeveelDbTypeSystem();
        }

        public override Expression GetGeneratedIdExpression(MemberInfo member) {
            // TODO: Get the mapped table name corresponding to the type reflecting
            //       the member, to invoke the function "LAST_UNIKE_KEY('table_name')"
            string tableName = "";
            var args = new Expression[] {Expression.Constant(tableName, typeof (string))};
            return new FunctionExpression(TypeHelper.GetMemberType(member), "last_unique_key", args);
        }

        public override QueryTypeSystem TypeSystem {
            get { return typeSystem; }
        }

        public override QueryLinguist CreateLinguist(QueryTranslator translator) {
            return new DeveelDbLinguist(this, translator);
        }

        #region DeveelDbLinguist

        class DeveelDbLinguist : QueryLinguist {
            public DeveelDbLinguist(DeveelDbLanguage language, QueryTranslator translator) 
                : base(language, translator) {
            }

            public override Expression Translate(Expression expression) {
                // fix up any order-by's
                expression = OrderByRewriter.Rewrite(Language, expression);
                expression = base.Translate(expression);
                expression = UnusedColumnRemover.Remove(expression);

                return expression;
            }

            public override string Format(Expression expression) {
                return DeveelDbFormatter.Format(expression);
            }
        }

        #endregion
    }
}