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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="DbDataSourceEnumerator.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">[....]</owner>
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// <owner current="true" primary="false">[....]</owner>
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//------------------------------------------------------------------------------
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namespace System.Data.Common {
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Data;
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using System.Diagnostics;
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using System.Threading;
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public abstract class DbDataSourceEnumerator { // V1.2.3300
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protected DbDataSourceEnumerator() { // V1.2.3300
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}
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abstract public DataTable GetDataSources(); // V1.2.3300
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/*
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virtual public IAsyncResult BeginGetDataSources(AsyncCallback callback, object asyncStateObject) { // V1.2.3300
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DbEnumSynchronousAsyncResult asyncResult = new DbEnumSynchronousAsyncResult(callback, asyncStateObject);
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try {
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asyncResult._dataTable = GetElements();
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asyncResult.SetCompletedSynchronously();
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}
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catch(DataAdapterException e) {
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ADP.TraceExceptionForCapture(e);
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asyncResult.ExceptionObject = e;
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}
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if (null == asyncResult._dataTable) {
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throw ADP.DataAdapter("no datatable");
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}
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if (null != callback) {
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callback(asyncResult);
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}
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return asyncResult;
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}
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virtual public DataTable EndGetDataSources(IAsyncResult asyncResult) { // V1.2.3300
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ADP.CheckArgumentNull(asyncResult, "asyncResult");
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DbEnumSynchronousAsyncResult ar = (asyncResult as DbEnumSynchronousAsyncResult);
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if (ar._endXxxCalled) {
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throw ADP.InvalidOperation("EndGetElements called twice");
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}
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ar._endXxxCalled = true;
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if (null != ar.ExceptionObject) {
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throw ar.ExceptionObject;
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}
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return ar._dataTable;
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}
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sealed private class DbEnumSynchronousAsyncResult : DbAsyncResult {
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internal bool _endXxxCalled;
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internal DataTable _dataTable;
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internal DbEnumSynchronousAsyncResult(AsyncCallback callback, Object asyncStateObject) : base(null, callback, asyncStateObject) {
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}
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}
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*/
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}
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}
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