|
public static ListCommits ( Lucene.Net.Store.Directory dir ) : ICollection |
||
| dir | Lucene.Net.Store.Directory | |
| return | ICollection |
|
public virtual void TestReopenOnCommit()
{
Directory dir = NewDirectory();
IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetIndexDeletionPolicy(new KeepAllCommits <IndexCommit>()).SetMaxBufferedDocs(-1).SetMergePolicy(NewLogMergePolicy(10)));
for (int i = 0; i < 4; i++)
{
Document doc = new Document();
doc.Add(NewStringField("id", "" + i, Field.Store.NO));
writer.AddDocument(doc);
IDictionary <string, string> data = new Dictionary <string, string>();
data["index"] = i + "";
writer.CommitData = data;
writer.Commit();
}
for (int i = 0; i < 4; i++)
{
writer.DeleteDocuments(new Term("id", "" + i));
IDictionary <string, string> data = new Dictionary <string, string>();
data["index"] = (4 + i) + "";
writer.CommitData = data;
writer.Commit();
}
writer.Dispose();
DirectoryReader r = DirectoryReader.Open(dir);
Assert.AreEqual(0, r.NumDocs);
ICollection <IndexCommit> commits = DirectoryReader.ListCommits(dir);
foreach (IndexCommit commit in commits)
{
DirectoryReader r2 = DirectoryReader.OpenIfChanged(r, commit);
Assert.IsNotNull(r2);
Assert.IsTrue(r2 != r);
IDictionary <string, string> s = commit.UserData;
int v;
if (s.Count == 0)
{
// First commit created by IW
v = -1;
}
else
{
v = Convert.ToInt32(s["index"]);
}
if (v < 4)
{
Assert.AreEqual(1 + v, r2.NumDocs);
}
else
{
Assert.AreEqual(7 - v, r2.NumDocs);
}
r.Dispose();
r = r2;
}
r.Dispose();
dir.Dispose();
}
public virtual void TestKeepAllDeletionPolicy()
{
for (int pass = 0; pass < 2; pass++)
{
if (VERBOSE)
{
Console.WriteLine("TEST: cycle pass="******"TEST: open writer for forceMerge");
}
writer = new IndexWriter(dir, conf);
policy = (KeepAllDeletionPolicy)writer.Config.IndexDeletionPolicy;
writer.ForceMerge(1);
writer.Dispose();
}
Assert.AreEqual(needsMerging ? 2 : 1, policy.NumOnInit);
// If we are not auto committing then there should
// be exactly 2 commits (one per close above):
Assert.AreEqual(1 + (needsMerging ? 1 : 0), policy.NumOnCommit);
// Test listCommits
ICollection <IndexCommit> commits = DirectoryReader.ListCommits(dir);
// 2 from closing writer
Assert.AreEqual(1 + (needsMerging ? 1 : 0), commits.Count);
// Make sure we can open a reader on each commit:
foreach (IndexCommit commit in commits)
{
IndexReader r = DirectoryReader.Open(commit);
r.Dispose();
}
// Simplistic check: just verify all segments_N's still
// exist, and, I can open a reader on each:
dir.DeleteFile(IndexFileNames.SEGMENTS_GEN);
long gen = SegmentInfos.GetLastCommitGeneration(dir);
while (gen > 0)
{
IndexReader reader = DirectoryReader.Open(dir);
reader.Dispose();
dir.DeleteFile(IndexFileNames.FileNameFromGeneration(IndexFileNames.SEGMENTS, "", gen));
gen--;
if (gen > 0)
{
// Now that we've removed a commit point, which
// should have orphan'd at least one index file.
// Open & close a writer and assert that it
// actually removed something:
int preCount = dir.ListAll().Length;
writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetOpenMode(OpenMode.APPEND).SetIndexDeletionPolicy(policy));
writer.Dispose();
int postCount = dir.ListAll().Length;
Assert.IsTrue(postCount < preCount);
}
}
dir.Dispose();
}
}
public virtual void TestOpenPriorSnapshot()
{
Directory dir = NewDirectory();
IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetIndexDeletionPolicy(new KeepAllDeletionPolicy(this, dir)).SetMaxBufferedDocs(2).SetMergePolicy(NewLogMergePolicy(10)));
KeepAllDeletionPolicy policy = (KeepAllDeletionPolicy)writer.Config.IndexDeletionPolicy;
for (int i = 0; i < 10; i++)
{
AddDoc(writer);
if ((1 + i) % 2 == 0)
{
writer.Commit();
}
}
writer.Dispose();
ICollection <IndexCommit> commits = DirectoryReader.ListCommits(dir);
Assert.AreEqual(5, commits.Count);
IndexCommit lastCommit = null;
foreach (IndexCommit commit in commits)
{
if (lastCommit == null || commit.Generation > lastCommit.Generation)
{
lastCommit = commit;
}
}
Assert.IsTrue(lastCommit != null);
// Now add 1 doc and merge
writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetIndexDeletionPolicy(policy));
AddDoc(writer);
Assert.AreEqual(11, writer.NumDocs);
writer.ForceMerge(1);
writer.Dispose();
Assert.AreEqual(6, DirectoryReader.ListCommits(dir).Count);
// Now open writer on the commit just before merge:
writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetIndexDeletionPolicy(policy).SetIndexCommit(lastCommit));
Assert.AreEqual(10, writer.NumDocs);
// Should undo our rollback:
writer.Rollback();
DirectoryReader r = DirectoryReader.Open(dir);
// Still merged, still 11 docs
Assert.AreEqual(1, r.Leaves.Count);
Assert.AreEqual(11, r.NumDocs);
r.Dispose();
writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetIndexDeletionPolicy(policy).SetIndexCommit(lastCommit));
Assert.AreEqual(10, writer.NumDocs);
// Commits the rollback:
writer.Dispose();
// Now 8 because we made another commit
Assert.AreEqual(7, DirectoryReader.ListCommits(dir).Count);
r = DirectoryReader.Open(dir);
// Not fully merged because we rolled it back, and now only
// 10 docs
Assert.IsTrue(r.Leaves.Count > 1);
Assert.AreEqual(10, r.NumDocs);
r.Dispose();
// Re-merge
writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetIndexDeletionPolicy(policy));
writer.ForceMerge(1);
writer.Dispose();
r = DirectoryReader.Open(dir);
Assert.AreEqual(1, r.Leaves.Count);
Assert.AreEqual(10, r.NumDocs);
r.Dispose();
// Now open writer on the commit just before merging,
// but this time keeping only the last commit:
writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetIndexCommit(lastCommit));
Assert.AreEqual(10, writer.NumDocs);
// Reader still sees fully merged index, because writer
// opened on the prior commit has not yet committed:
r = DirectoryReader.Open(dir);
Assert.AreEqual(1, r.Leaves.Count);
Assert.AreEqual(10, r.NumDocs);
r.Dispose();
writer.Dispose();
// Now reader sees not-fully-merged index:
r = DirectoryReader.Open(dir);
Assert.IsTrue(r.Leaves.Count > 1);
Assert.AreEqual(10, r.NumDocs);
r.Dispose();
dir.Dispose();
}
public virtual void TestFutureCommit()
{
Directory dir = NewDirectory();
IndexWriter w = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)).SetIndexDeletionPolicy(NoDeletionPolicy.INSTANCE));
Document doc = new Document();
w.AddDocument(doc);
// commit to "first"
IDictionary <string, string> commitData = new Dictionary <string, string>();
commitData["tag"] = "first";
w.SetCommitData(commitData);
w.Commit();
// commit to "second"
w.AddDocument(doc);
commitData["tag"] = "second";
w.SetCommitData(commitData);
w.Dispose();
// open "first" with IndexWriter
IndexCommit commit = null;
foreach (IndexCommit c in DirectoryReader.ListCommits(dir))
{
if (c.UserData["tag"].Equals("first", StringComparison.Ordinal))
{
commit = c;
break;
}
}
Assert.IsNotNull(commit);
w = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)).SetIndexDeletionPolicy(NoDeletionPolicy.INSTANCE).SetIndexCommit(commit));
Assert.AreEqual(1, w.NumDocs);
// commit IndexWriter to "third"
w.AddDocument(doc);
commitData["tag"] = "third";
w.SetCommitData(commitData);
w.Dispose();
// make sure "second" commit is still there
commit = null;
foreach (IndexCommit c in DirectoryReader.ListCommits(dir))
{
if (c.UserData["tag"].Equals("second", StringComparison.Ordinal))
{
commit = c;
break;
}
}
Assert.IsNotNull(commit);
dir.Dispose();
}
