53 lines
2.1 KiB
C#
53 lines
2.1 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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namespace System.Data.Linq {
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/// <summary>
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/// The result of executing a query.
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/// </summary>
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public interface IExecuteResult : IDisposable {
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/// <summary>
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/// The return value or result of the executed query. This object has the same type as the
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/// query expression's Type property.
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/// </summary>
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object ReturnValue { get; }
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/// <summary>
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/// Retrieves the nth output parameter. This method is normally used when the query is a mapped
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/// function with output parameters.
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/// </summary>
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/// <param name="parameterIndex"></param>
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/// <returns></returns>
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object GetParameterValue(int parameterIndex);
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}
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/// <summary>
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/// Interface providing access to a function return value.
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/// </summary>
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public interface IFunctionResult {
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/// <summary>
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/// The value.
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/// </summary>
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object ReturnValue { get; }
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}
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/// <summary>
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/// An interface for representing the result of a mapped function with a single return sequence.
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/// </summary>
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[SuppressMessage("Microsoft.Naming", "CA1710:IdentifiersShouldHaveCorrectSuffix", Justification="tadam: Meant to represent a database table which is delayed loaded and doesn't provide collection semantics.")]
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public interface ISingleResult<T> : IEnumerable<T>, IFunctionResult, IDisposable { }
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/// <summary>
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/// An interface for representing results of mapped functions or queries with variable return sequences.
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/// </summary>
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public interface IMultipleResults : IFunctionResult, IDisposable {
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/// <summary>
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/// Retrieves the next result as a sequence of Type 'TElement'.
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/// </summary>
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/// <typeparam name="TElement"></typeparam>
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/// <returns></returns>
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[SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter", Justification = "tadam: Generic parameters are required for strong-typing of the return type.")]
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IEnumerable<TElement> GetResult<TElement>();
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}
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}
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