108 lines
4.4 KiB
C#
108 lines
4.4 KiB
C#
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved
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using System;
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using System.Data.OleDb;
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using System.Security.Permissions;
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using Microsoft.Search.Interop;
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[assembly: CLSCompliant(true)]
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[assembly: OleDbPermission(SecurityAction.RequestMinimum, Unrestricted = true)]
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namespace Microsoft.Samples.WindowsSearch.DSearch
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{
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/// <summary>
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/// This class is simply a static console application to query the Windows Search using interop for ISearchQueryHelper
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/// </summary>
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class DSearch
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{
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[STAThread]
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static void Main(string[] args)
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{
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if (args.Length < 1)
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{
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Console.WriteLine("Usage: ds [file search pattern] [userQuery]");
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Console.WriteLine("[file search pattern] can include '*' and '?' wildcards");
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Console.WriteLine("[userQuery] query to look for inside the document (with operators of OR, AND). Optional.");
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return;
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}
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// First parameter is file name pattern
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string pattern = args[0];
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string userQuery = " ";
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// Everything else is considered to be a search query
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for (int i = 1; i < args.Length; i++)
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{
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userQuery += args[i] + " ";
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}
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// This uses the Microsoft.Search.Interop assembly
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CSearchManager manager = new CSearchManager();
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// SystemIndex catalog is the default catalog in Windows
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ISearchCatalogManager catalogManager = manager.GetCatalog("SystemIndex");
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// Get the ISearchQueryHelper which will help us to translate AQS --> SQL necessary to query the indexer
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ISearchQueryHelper queryHelper = catalogManager.GetQueryHelper();
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// Set the number of results we want. Don't set this property if all results are needed.
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queryHelper.QueryMaxResults = 10;
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// Set list of columns we want
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queryHelper.QuerySelectColumns = "System.ItemPathDisplay";
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// Set additional query restriction
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queryHelper.QueryWhereRestrictions = "AND scope='file:'";
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// convert file pattern if it is not '*'. Don't create restriction for '*' as it includes all files.
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if (pattern != "*")
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{
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pattern = pattern.Replace("*", "%");
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pattern = pattern.Replace("?", "_");
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if (pattern.Contains("%") || pattern.Contains("_"))
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{
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queryHelper.QueryWhereRestrictions += " AND System.FileName LIKE '" + pattern + "' ";
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}
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else
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{
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// if there are no wildcards we can use a contains which is much faster as it uses the index
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queryHelper.QueryWhereRestrictions += " AND Contains(System.FileName, '" + pattern + "') ";
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}
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}
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// Set sorting order
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queryHelper.QuerySorting = "System.DateModified DESC";
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// Generate SQL from our parameters, converting the userQuery from AQS->WHERE clause
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string sqlQuery = queryHelper.GenerateSQLFromUserQuery(userQuery);
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Console.WriteLine(sqlQuery);
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// --- Perform the query ---
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// create an OleDbConnection object which connects to the indexer provider with the windows application
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using (System.Data.OleDb.OleDbConnection conn = new OleDbConnection(queryHelper.ConnectionString))
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{
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// open the connection
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conn.Open();
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// now create an OleDB command object with the query we built above and the connection we just opened.
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using (OleDbCommand command = new OleDbCommand(sqlQuery, conn))
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{
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// execute the command, which returns the results as an OleDbDataReader.
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using (OleDbDataReader WDSResults = command.ExecuteReader())
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{
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while (WDSResults.Read())
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{
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// col 0 is our path in display format
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Console.WriteLine("{0}", WDSResults.GetString(0));
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}
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}
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}
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}
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}
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}
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}
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