Version: 2021.1
LanguageEnglish
  • C#

SearchIndexer.Read

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Declaration

public bool Read(Stream stream, bool checkVersionOnly);

Parameters

stream The stream to read the index from.
checkVersionOnly If true, verifies the version of the index.

Returns

bool Returns false if the version of the index is not supported.

Description

Reads a stream and populates the index from it.

using System.IO;
using System.Linq;
using UnityEditor;
using UnityEditor.Search;
using UnityEngine;

static class Example_SearchIndexer_Read
{
    [MenuItem("Examples/SearchIndexer/Read")]
    public static void Run()
    {
        var si = new SearchIndexer();
        si.Start();
        si.AddDocument("document 1");
        si.AddDocument("document 2");
        si.Finish();
        while (!si.IsReady())
            return;

        File.WriteAllBytes("Temp/Read.index", si.SaveBytes());

        // Stream the index from disk but only check if the stream is valid.
        using (var fileStream = new FileStream("Temp/Read.index", FileMode.Open, FileAccess.Read, FileShare.Read))
        {
            var copyIndex = new SearchIndexer();
            Debug.Assert(copyIndex.Read(fileStream, checkVersionOnly: true));
        }

        // Completely stream the index from disk.
        using (var fileStream = new FileStream("Temp/Read.index", FileMode.Open, FileAccess.Read, FileShare.Read))
        {
            var copyIndex = new SearchIndexer();
            Debug.Assert(copyIndex.Read(fileStream, checkVersionOnly: false));
            Debug.Assert(copyIndex.GetDocument(0).id == "document 1");
        }
    }
}