72 lines
2.8 KiB
C#
72 lines
2.8 KiB
C#
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//---------------------------------------------------------------------
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// <copyright file="EntitySqlParser.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//
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// @owner [....]
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// @backupOwner [....]
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//---------------------------------------------------------------------
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namespace System.Data.Common.EntitySql
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{
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using System.Collections.Generic;
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using System.Data.Common.CommandTrees;
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using System.Data.Common.EntitySql;
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using System.Data.Common.Utils;
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using System.Data.Metadata.Edm;
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using System.Diagnostics;
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/// <summary>
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/// Public Entity SQL Parser class.
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/// </summary>
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public sealed class EntitySqlParser
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{
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private readonly Perspective _perspective;
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/// <summary>
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/// Construct a parser bound to the specified workspace with the specified perspective.
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/// </summary>
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internal EntitySqlParser(Perspective perspective)
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{
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Debug.Assert(null != perspective, "null perspective?");
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_perspective = perspective;
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}
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/// <summary>
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/// Parse the specified <paramref name="query"/> with the specified <paramref name="parameters"/>.
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/// </summary>
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/// <param name="query">EntitySQL query to be parsed.</param>
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/// <param name="parameters">optional query parameters</param>
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/// <returns><see cref="ParseResult"/> containing <see cref="DbCommandTree"/> and information describing inline function definitions if any.</returns>
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public ParseResult Parse(string query, params DbParameterReferenceExpression[] parameters)
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{
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EntityUtil.CheckArgumentNull(query, "query");
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if (parameters != null)
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{
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IEnumerable<DbParameterReferenceExpression> paramsEnum = parameters;
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EntityUtil.CheckArgumentContainsNull(ref paramsEnum, "parameters");
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}
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var result = CqlQuery.Compile(query, _perspective, null /* parser options - use default */, parameters);
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return result;
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}
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/// <summary>
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/// Parse a specific query with a specific set variables and produce a <see cref="DbLambda"/>.
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/// </summary>
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public DbLambda ParseLambda(string query, params DbVariableReferenceExpression[] variables)
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{
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EntityUtil.CheckArgumentNull(query, "query");
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if (variables != null)
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{
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IEnumerable<DbVariableReferenceExpression> varsEnum = variables;
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EntityUtil.CheckArgumentContainsNull(ref varsEnum, "variables");
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}
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DbLambda result = CqlQuery.CompileQueryCommandLambda(query, _perspective, null /* parser options - use default */, null /* parameters */, variables);
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return result;
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}
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}
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}
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