net.openhft.chronicle.queue.impl.table

Class SingleTableStore<T extends Metadata>

java.lang.Object

net.openhft.chronicle.core.io.AbstractCloseable

net.openhft.chronicle.queue.impl.table.SingleTableStore<T>

All Implemented Interfaces:

Closeable, AutoCloseable, net.openhft.chronicle.bytes.CommonMarshallable, net.openhft.chronicle.core.io.ManagedCloseable, net.openhft.chronicle.core.io.Monitorable, net.openhft.chronicle.core.io.QueryCloseable, net.openhft.chronicle.core.io.ReferenceOwner, net.openhft.chronicle.core.io.SingleThreadedChecked, CommonStore, TableStore<T>, net.openhft.chronicle.wire.Demarshallable, net.openhft.chronicle.wire.WriteMarshallable, net.openhft.chronicle.wire.WriteValue

public class SingleTableStore<T extends Metadata>
extends net.openhft.chronicle.core.io.AbstractCloseable
implements TableStore<T>

Field Summary

Fields

Modifier and Type	Field and Description
static String	SUFFIX

Fields inherited from class net.openhft.chronicle.core.io.AbstractCloseable

closedHere, DISABLE_DISCARD_WARNING, WARN_NS

Fields inherited from interface net.openhft.chronicle.wire.Demarshallable

DEMARSHALLABLES

Fields inherited from interface net.openhft.chronicle.wire.WriteMarshallable

EMPTY

Fields inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

INIT, TMP

Fields inherited from interface net.openhft.chronicle.core.io.SingleThreadedChecked

DISABLE_SINGLE_THREADED_CHECK

Method Summary

Modifier and Type	Method and Description
net.openhft.chronicle.core.values.LongValue	acquireValueFor(CharSequence key, long defaultValue)
@NotNull net.openhft.chronicle.bytes.MappedBytes	bytes()
static <T,R> R	doWithExclusiveLock(@NotNull File file, @NotNull Function<T,? extends R> code, @NotNull Supplier<T> target)
<R> R	doWithExclusiveLock(@NotNull Function<TableStore<T>,? extends R> code) Acquires file-system level lock on the underlying file, to prevent concurrent access from multiple processes.
static <T,R> R	doWithSharedLock(@NotNull File file, @NotNull Function<T,? extends R> code, @NotNull Supplier<T> target)
@NotNull String	dump()
String	dump(net.openhft.chronicle.wire.WireType wireType)
@NotNull File	file()
<T> void	forEachKey(T accumulator, TableStoreIterator<T> tsIterator)
T	metadata()
protected void	performClose()
@NotNull String	shortDump()
@NotNull String	toString()
void	writeMarshallable(@NotNull net.openhft.chronicle.wire.WireOut wire)

Methods inherited from class net.openhft.chronicle.core.io.AbstractCloseable

assertCloseable, assertCloseablesClosed, close, createdHere, disableCloseableTracing, enableCloseableTracing, gcAndWaitForCloseablesToClose, isClosed, isClosing, isInUserThread, referenceId, shouldPerformCloseInBackground, shouldWaitForClosed, singleThreadedCheckDisabled, singleThreadedCheckDisabled, singleThreadedCheckReset, threadSafetyCheck, throwExceptionIfClosed, throwExceptionIfClosedInSetter, unmonitor, unmonitor, waitForCloseablesToClose, waitForClosed, warnAndCloseIfNotClosed

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.openhft.chronicle.queue.impl.TableStore

acquireValueFor, readOnly

Methods inherited from interface net.openhft.chronicle.wire.Demarshallable

newInstance

Methods inherited from interface net.openhft.chronicle.wire.WriteMarshallable

binaryLengthLength, writeValue

Methods inherited from interface net.openhft.chronicle.bytes.CommonMarshallable

usesSelfDescribingMessage

Methods inherited from interface net.openhft.chronicle.core.io.ManagedCloseable

createdHere, throwExceptionIfClosed, warnAndCloseIfNotClosed

Methods inherited from interface net.openhft.chronicle.core.io.Closeable

close, closeQuietly, closeQuietly

Methods inherited from interface net.openhft.chronicle.core.io.QueryCloseable

isClosed, isClosing

Methods inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

referenceName, temporary

Methods inherited from interface net.openhft.chronicle.core.io.Monitorable

unmonitor

Field Detail

SUFFIX

public static final String SUFFIX

See Also:

Constant Field Values

Method Detail

doWithSharedLock

public static <T,R> R doWithSharedLock(@NotNull
                                       @NotNull File file,
                                       @NotNull
                                       @NotNull Function<T,? extends R> code,
                                       @NotNull
                                       @NotNull Supplier<T> target)

doWithExclusiveLock

public static <T,R> R doWithExclusiveLock(@NotNull
                                          @NotNull File file,
                                          @NotNull
                                          @NotNull Function<T,? extends R> code,
                                          @NotNull
                                          @NotNull Supplier<T> target)

file

@NotNull
public @NotNull File file()

Specified by:

file in interface CommonStore

Returns:

the file associated with this store.

dump

@NotNull
public @NotNull String dump()

Specified by:

dump in interface CommonStore

dump

public String dump(net.openhft.chronicle.wire.WireType wireType)

Specified by:

dump in interface CommonStore

shortDump

@NotNull
public @NotNull String shortDump()

Specified by:

shortDump in interface CommonStore

performClose

protected void performClose()

Specified by:

performClose in class net.openhft.chronicle.core.io.AbstractCloseable

bytes

@NotNull
public @NotNull net.openhft.chronicle.bytes.MappedBytes bytes()

Specified by:

bytes in interface CommonStore

Returns:

creates a new instance of mapped bytes, because, for example the tailer and appender can be at different locations.

toString

@NotNull
public @NotNull String toString()

Overrides:

toString in class net.openhft.chronicle.core.io.AbstractCloseable

writeMarshallable

public void writeMarshallable(@NotNull
                              @NotNull net.openhft.chronicle.wire.WireOut wire)

Specified by:

writeMarshallable in interface net.openhft.chronicle.wire.WriteMarshallable

acquireValueFor

public net.openhft.chronicle.core.values.LongValue acquireValueFor(CharSequence key,
                                                                   long defaultValue)

Specified by:

acquireValueFor in interface TableStore<T extends Metadata>

forEachKey

public <T> void forEachKey(T accumulator,
                           TableStoreIterator<T> tsIterator)

Specified by:

forEachKey in interface TableStore<T extends Metadata>

doWithExclusiveLock

public <R> R doWithExclusiveLock(@NotNull
                                 @NotNull Function<TableStore<T>,? extends R> code)

Description copied from interface: TableStore

Acquires file-system level lock on the underlying file, to prevent concurrent access from multiple processes. It is recommended to use this when acquiring your values for the first time, otherwise it is possible to get unpredictable results in case of multiple processes/threads trying to acquire values for the same key. In addition, it allows to batch multiple TableStore.acquireValueFor(CharSequence) calls, to atomically acquire multiple values.

Specified by:

doWithExclusiveLock in interface TableStore<T extends Metadata>

Type Parameters:

R - result type

Parameters:

code - code block to execute using locked table store

Returns:

result of code block execution

metadata

public T metadata()

Specified by:

metadata in interface TableStore<T extends Metadata>