|
static private Open ( Directory directory, |
||
| directory | Directory | |
| commit | ||
| termInfosIndexDivisor | int | |
| return | ||
internal DirectoryReader DoOpenIfChanged(SegmentInfos infos)
{
return(StandardDirectoryReader.Open(m_directory, infos, GetSequentialSubReaders().OfType <AtomicReader>().ToList(), termInfosIndexDivisor));
}
/// <summary>
/// Expert: Returns a <see cref="IndexReader"/> reading the index in the given
/// <see cref="Store.Directory"/> with the given termInfosIndexDivisor. </summary>
/// <param name="directory"> the index directory </param>
/// <param name="termInfosIndexDivisor"> Subsamples which indexed
/// terms are loaded into RAM. this has the same effect as setting
/// <see cref="LiveIndexWriterConfig.TermIndexInterval"/> (on <see cref="IndexWriterConfig"/>) except that setting
/// must be done at indexing time while this setting can be
/// set per reader. When set to N, then one in every
/// N*termIndexInterval terms in the index is loaded into
/// memory. By setting this to a value > 1 you can reduce
/// memory usage, at the expense of higher latency when
/// loading a TermInfo. The default value is 1. Set this
/// to -1 to skip loading the terms index entirely.
/// <b>NOTE:</b> divisor settings > 1 do not apply to all <see cref="Codecs.PostingsFormat"/>
/// implementations, including the default one in this release. It only makes
/// sense for terms indexes that can efficiently re-sample terms at load time. </param>
/// <exception cref="IOException"> if there is a low-level IO error </exception>
new public static DirectoryReader Open(Directory directory, int termInfosIndexDivisor)
{
return(StandardDirectoryReader.Open(directory, null, termInfosIndexDivisor));
}
/// <summary>
/// Expert: returns an <see cref="IndexReader"/> reading the index in the given
/// <seealso cref="Index.IndexCommit"/> and <paramref name="termInfosIndexDivisor"/>. </summary>
/// <param name="commit"> the commit point to open </param>
/// <param name="termInfosIndexDivisor"> Subsamples which indexed
/// terms are loaded into RAM. this has the same effect as setting
/// <see cref="LiveIndexWriterConfig.TermIndexInterval"/> (on <see cref="IndexWriterConfig"/>) except that setting
/// must be done at indexing time while this setting can be
/// set per reader. When set to N, then one in every
/// N*termIndexInterval terms in the index is loaded into
/// memory. By setting this to a value > 1 you can reduce
/// memory usage, at the expense of higher latency when
/// loading a TermInfo. The default value is 1. Set this
/// to -1 to skip loading the terms index entirely.
/// <b>NOTE:</b> divisor settings > 1 do not apply to all <see cref="Codecs.PostingsFormat"/>
/// implementations, including the default one in this release. It only makes
/// sense for terms indexes that can efficiently re-sample terms at load time. </param>
/// <exception cref="IOException"> if there is a low-level IO error </exception>
new public static DirectoryReader Open(IndexCommit commit, int termInfosIndexDivisor)
{
return(StandardDirectoryReader.Open(commit.Directory, commit, termInfosIndexDivisor));
}
/// <summary>
/// Returns a <see cref="IndexReader"/> reading the index in the given
/// <see cref="Store.Directory"/> </summary>
/// <param name="directory"> the index directory </param>
/// <exception cref="IOException"> if there is a low-level IO error </exception>
new public static DirectoryReader Open(Directory directory)
{
return(StandardDirectoryReader.Open(directory, null, DEFAULT_TERMS_INDEX_DIVISOR));
}
/// <summary>
/// Expert: returns an <see cref="IndexReader"/> reading the index in the given
/// <see cref="Index.IndexCommit"/>. </summary>
/// <param name="commit"> the commit point to open </param>
/// <exception cref="IOException"> if there is a low-level IO error </exception>
new public static DirectoryReader Open(IndexCommit commit)
{
return(StandardDirectoryReader.Open(commit.Directory, commit, DEFAULT_TERMS_INDEX_DIVISOR));
}
