Exemplo n.º 1
0
        //^invariant select != null ^ groupBy != null;

        public QueryBody(List <FromWhereClause> /*!*/ fromWhere, OrderByClause orderBy, object /*!*/ selectGroupBy, IntoClause into)
        {
            Debug.Assert(fromWhere != null && (selectGroupBy is SelectClause || selectGroupBy is GroupByClause));

            this.fromWhere = fromWhere;
            this.orderBy   = orderBy;
            this.select    = selectGroupBy as SelectClause;
            this.groupBy   = selectGroupBy as GroupByClause;
            this.into      = into;
        }
Exemplo n.º 2
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        private static LinqOpChain BuildSelectManyChain(List <Generator> /*!*/ generators,
                                                        GroupByClause gbClause, Expression /*!*/ v, LinqOp lastOp)
        {
            // PATTERNs (Rules #6, #7):
            //	from x1 in e1 from x2 in e3 ... from xk in ek [select v | group v by g]
            //
            // TRANSLATIONs:
            //  ( e1 ) . SelectMany ( x1 =>
            //		( e2 ) . SelectMany ( x2 =>
            //			...
            //				RESPECTIVELY:
            //				( ek ) . Select ( xk => v )
            //				( ek ) . GroupBy ( xk => g, xk => v )
            //			...
            //		)
            //  )
            //	. [lastOp]

            int i = generators.Count - 1;

            LinqOp outer_op;             // outer-most operator in the current chain

            if (gbClause != null)
            {
                outer_op = new LinqOp.GroupBy(generators[i].KeyVar, generators[i].ValueVar, gbClause.ByExpr, v);
            }
            else
            {
                outer_op = new LinqOp.Select(generators[i].KeyVar, generators[i].ValueVar, v);
            }

            // inner-most:
            LinqOpChain inner_chain = new LinqOpChain(generators[i].Expression, outer_op);

            while (--i >= 0)
            {
                inner_chain = new LinqOpChain(
                    generators[i].Expression,
                    outer_op = new LinqOp.SelectMany(generators[i].KeyVar, generators[i].ValueVar, inner_chain)
                    );
            }

            outer_op.Next = lastOp;

            return(inner_chain);
        }
Exemplo n.º 3
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 public GroupBy(DirectVarUse keyVar, DirectVarUse valueVar, GroupByClause clause)
     : this(keyVar, valueVar, clause.GroupExpr, clause.ByExpr)
 {
 }
Exemplo n.º 4
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 virtual public void VisitGroupByClause(Linq.GroupByClause x)
 {
     VisitElement(x.GroupExpr);
     VisitElement(x.ByExpr);
 }
Exemplo n.º 5
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			public GroupBy(DirectVarUse keyVar, DirectVarUse valueVar, GroupByClause clause)
				: this(keyVar, valueVar, clause.GroupExpr, clause.ByExpr)
			{
			}
Exemplo n.º 6
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		private static LinqOpChain BuildSelectManyChain(List<Generator>/*!*/ generators,
			GroupByClause gbClause, Expression/*!*/ v, LinqOp lastOp)
		{
			// PATTERNs (Rules #6, #7): 
			//	from x1 in e1 from x2 in e3 ... from xk in ek [select v | group v by g]
			//
			// TRANSLATIONs: 
			//  ( e1 ) . SelectMany ( x1 => 
			//		( e2 ) . SelectMany ( x2 =>
			//			...
			//				RESPECTIVELY:
			//				( ek ) . Select ( xk => v )       
			//				( ek ) . GroupBy ( xk => g, xk => v )
			//			... 
			//		)
			//  ) 
			//	. [lastOp]

			int i = generators.Count - 1;

			LinqOp outer_op; // outer-most operator in the current chain

			if (gbClause != null)
				outer_op = new LinqOp.GroupBy(generators[i].KeyVar, generators[i].ValueVar, gbClause.ByExpr, v);
			else
				outer_op = new LinqOp.Select(generators[i].KeyVar, generators[i].ValueVar, v);

			// inner-most:
			LinqOpChain inner_chain = new LinqOpChain(generators[i].Expression, outer_op);

			while (--i >= 0)
			{
				inner_chain = new LinqOpChain(
					generators[i].Expression,
					outer_op = new LinqOp.SelectMany(generators[i].KeyVar, generators[i].ValueVar, inner_chain)
				);
			}

			outer_op.Next = lastOp;

			return inner_chain;
		}
Exemplo n.º 7
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		//^invariant select != null ^ groupBy != null;

		public QueryBody(List<FromWhereClause>/*!*/ fromWhere, OrderByClause orderBy, object/*!*/ selectGroupBy, IntoClause into)
		{
			Debug.Assert(fromWhere != null && (selectGroupBy is SelectClause || selectGroupBy is GroupByClause));

			this.fromWhere = fromWhere;
			this.orderBy = orderBy;
			this.select = selectGroupBy as SelectClause;
			this.groupBy = selectGroupBy as GroupByClause;
			this.into = into;
		}