Package io.activej.state.file

Class FileStateManager<T>

java.lang.Object

io.activej.state.file.FileStateManager<T>

All Implemented Interfaces:

io.activej.common.initializer.WithInitializer<FileStateManager<T>>, StateManager<T,Long>

public final class FileStateManager<T>
extends Object
implements StateManager<T,Long>, io.activej.common.initializer.WithInitializer<FileStateManager<T>>

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_TEMP_DIR

Method Summary

Modifier and Type	Method	Description
static <T> FileStateManager<T>	create(BlockingFs fs, FileNamingScheme fileNamingScheme, StreamCodec<T> codec)
static <T> FileStateManager<T>	create(BlockingFs fs, FileNamingScheme fileNamingScheme, StreamDecoder<T> decoder)
static <T> FileStateManager<T>	create(BlockingFs fs, FileNamingScheme fileNamingScheme, StreamEncoder<T> encoder)
static <T> FileStateManager<T>	create(BlockingFs fs, FileNamingScheme fileNamingScheme, StreamEncoder<T> encoder, StreamDecoder<T> decoder)
@Nullable Long	getLastDiffRevision(@NotNull Long currentRevision)
@Nullable Long	getLastSnapshotRevision()
@NotNull FileState<T>	load()
@NotNull FileState<T>	load(T stateFrom, @NotNull Long revisionFrom)
T	loadDiff(T state, @NotNull Long revisionFrom, @NotNull Long revisionTo)
T	loadSnapshot(@NotNull Long revision)
@NotNull Long	newRevision()
@NotNull Long	save(T state)
void	save(T state, Long revision)
void	saveDiff(T state, @NotNull Long revision, T stateFrom, @NotNull Long revisionFrom)
void	saveSnapshot(T state, @NotNull Long revision)
@Nullable FileState<T>	tryLoad()
@Nullable FileState<T>	tryLoad(T stateFrom, @NotNull Long revisionFrom)
T	tryLoadDiff(T state, @NotNull Long revisionFrom, @NotNull Long revisionTo)
T	tryLoadSnapshot(@NotNull Long revision)
FileStateManager<T>	withMaxSaveDiffs(int maxSaveDiffs)
FileStateManager<T>	withTempDir(String tempDir)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.activej.common.initializer.WithInitializer

withInitializer

Field Details

DEFAULT_TEMP_DIR

public static final String DEFAULT_TEMP_DIR

See Also:

• Constant Field Values

Method Details

create

public static <T> FileStateManager<T> create(BlockingFs fs,
 FileNamingScheme fileNamingScheme,
 StreamCodec<T> codec)

create

public static <T> FileStateManager<T> create(BlockingFs fs,
 FileNamingScheme fileNamingScheme,
 StreamEncoder<T> encoder,
 StreamDecoder<T> decoder)

create

public static <T> FileStateManager<T> create(BlockingFs fs,
 FileNamingScheme fileNamingScheme,
 StreamEncoder<T> encoder)

create

public static <T> FileStateManager<T> create(BlockingFs fs,
 FileNamingScheme fileNamingScheme,
 StreamDecoder<T> decoder)

withMaxSaveDiffs

public FileStateManager<T> withMaxSaveDiffs(int maxSaveDiffs)

withTempDir

public FileStateManager<T> withTempDir(String tempDir)

newRevision

@NotNull
public @NotNull Long newRevision()
                          throws IOException

Specified by:

newRevision in interface StateManager<T,Long>

Throws:

IOException

getLastSnapshotRevision

@Nullable
public @Nullable Long getLastSnapshotRevision()
                                       throws IOException

Specified by:

getLastSnapshotRevision in interface StateManager<T,Long>

Throws:

IOException

getLastDiffRevision

@Nullable
public @Nullable Long getLastDiffRevision(@NotNull
 @NotNull Long currentRevision)
                                   throws IOException

Specified by:

getLastDiffRevision in interface StateManager<T,Long>

Throws:

IOException

loadSnapshot

@NotNull
public T loadSnapshot(@NotNull
 @NotNull Long revision)
               throws IOException

Specified by:

loadSnapshot in interface StateManager<T,Long>

Throws:

IOException

tryLoadSnapshot

@Nullable
public T tryLoadSnapshot(@NotNull
 @NotNull Long revision)
                  throws IOException

Specified by:

tryLoadSnapshot in interface StateManager<T,Long>

Throws:

IOException

loadDiff

@NotNull
public T loadDiff(@NotNull
 T state,
 @NotNull
 @NotNull Long revisionFrom,
 @NotNull
 @NotNull Long revisionTo)
           throws IOException

Specified by:

loadDiff in interface StateManager<T,Long>

Throws:

IOException

tryLoadDiff

@Nullable
public T tryLoadDiff(@NotNull
 T state,
 @NotNull
 @NotNull Long revisionFrom,
 @NotNull
 @NotNull Long revisionTo)
              throws IOException

Specified by:

tryLoadDiff in interface StateManager<T,Long>

Throws:

IOException

saveSnapshot

public void saveSnapshot(@NotNull
 T state,
 @NotNull
 @NotNull Long revision)
                  throws IOException

Specified by:

saveSnapshot in interface StateManager<T,Long>

Throws:

IOException

saveDiff

public void saveDiff(@NotNull
 T state,
 @NotNull
 @NotNull Long revision,
 @NotNull
 T stateFrom,
 @NotNull
 @NotNull Long revisionFrom)
              throws IOException

Specified by:

saveDiff in interface StateManager<T,Long>

Throws:

IOException

load

@NotNull
public @NotNull FileState<T> load()
                           throws IOException

Throws:

IOException

tryLoad

@Nullable
public @Nullable FileState<T> tryLoad()
                               throws IOException

Throws:

IOException

load

@NotNull
public @NotNull FileState<T> load(@NotNull
 T stateFrom,
 @NotNull
 @NotNull Long revisionFrom)
                           throws IOException

Throws:

IOException

tryLoad

@Nullable
public @Nullable FileState<T> tryLoad(@NotNull
 T stateFrom,
 @NotNull
 @NotNull Long revisionFrom)
                               throws IOException

Throws:

IOException

save

@NotNull
public @NotNull Long save(@NotNull
 T state)
                   throws IOException

Throws:

IOException

save

public void save(@NotNull
 T state,
 Long revision)
          throws IOException

Throws:

IOException