using System; using System.Collections.Generic; using SqlLinq.SyntaxTree; namespace SqlLinq { public class ScalarQuery<TSource, TResult> : QueryBase<TResult> { private Query<TSource, object> _query; public ScalarQuery(string sql) : base(sql) { _query = new Query<TSource, object>(sql); } public Func<IEnumerable<TSource>, TResult> Select { get; private set; } protected override void OnCompile() { if (Sql == "subquery") // this whole subquery bit is still a work in progress ((ICompile)_query).Compile(SyntaxNode); else _query.Compile(); Select = SyntaxNode.Columns.CreateScalarSelector<TSource, TResult>(_query.Evaluate); } public TResult Evaluate(IEnumerable<TSource> source) { return Select(source); } } }
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10 PRINT "Don is cool" 20 GOTO 10