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Imported Upstream version 4.6.0.125
Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4
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//------------------------------------------------------------------------------
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// <copyright file="NextResultGenerator.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">WillA</owner>
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//------------------------------------------------------------------------------
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using System;
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using System.Collections.Generic;
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using System.Data.Common;
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using System.Data.Common.Utils;
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using System.Data.EntityClient;
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using System.Data.Common.Internal.Materialization;
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using System.Data.Metadata.Edm;
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using System.Linq;
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using System.Text;
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namespace System.Data.Objects
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{
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internal class NextResultGenerator
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{
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EntityCommand _entityCommand;
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ReadOnlyMetadataCollection<EntitySet> _entitySets;
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ObjectContext _context;
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EdmType[] _edmTypes;
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int _resultSetIndex;
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MergeOption _mergeOption;
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internal NextResultGenerator(ObjectContext context, EntityCommand entityCommand, EdmType[] edmTypes, ReadOnlyMetadataCollection<EntitySet> entitySets, MergeOption mergeOption, int resultSetIndex)
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{
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_context = context;
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_entityCommand = entityCommand;
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_entitySets = entitySets;
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_edmTypes = edmTypes;
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_resultSetIndex = resultSetIndex;
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_mergeOption = mergeOption;
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}
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internal ObjectResult<TElement> GetNextResult<TElement>(DbDataReader storeReader)
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{
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bool isNextResult = false;
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try
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{
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isNextResult = storeReader.NextResult();
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}
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catch (Exception e)
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{
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if (EntityUtil.IsCatchableExceptionType(e))
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{
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throw EntityUtil.CommandExecution(System.Data.Entity.Strings.EntityClient_StoreReaderFailed, e);
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}
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throw;
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}
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if (isNextResult)
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{
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EdmType edmType = _edmTypes[_resultSetIndex];
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MetadataHelper.CheckFunctionImportReturnType<TElement>(edmType, _context.MetadataWorkspace);
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return _context.MaterializedDataRecord<TElement>(_entityCommand, storeReader, _resultSetIndex, _entitySets, _edmTypes, _mergeOption);
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}
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else
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{
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return null;
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}
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}
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}
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}
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