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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
package org.rocksdb;
/**
* FlushOptions to be passed to flush operations of
* {@link org.rocksdb.RocksDB}.
*/
public class FlushOptions extends RocksObject {
/**
* Construct a new instance of FlushOptions.
*/
public FlushOptions(){
super(newFlushOptionsInance());
}
/**
* Set if the flush operation shall block until it terminates.
*
* @param waitForFlush boolean value indicating if the flush
* operations waits for termination of the flush process.
*
* @return instance of current FlushOptions.
*/
public FlushOptions setWaitForFlush(final boolean waitForFlush) {
assert(isOwningHandle());
setWaitForFlush(nativeHandle_, waitForFlush);
return this;
}
/**
* Wait for flush to finished.
*
* @return boolean value indicating if the flush operation
* waits for termination of the flush process.
*/
public boolean waitForFlush() {
assert(isOwningHandle());
return waitForFlush(nativeHandle_);
}
/**
* Set to true so that flush would proceed immediately even if it means
* writes will stall for the duration of the flush.
*
* Set to false so that the operation will wait until it's possible to do
* the flush without causing stall or until required flush is performed by
* someone else (foreground call or background thread).
*
* Default: false
*
* @param allowWriteStall true to allow writes to stall for flush, false
* otherwise.
*
* @return instance of current FlushOptions.
*/
public FlushOptions setAllowWriteStall(final boolean allowWriteStall) {
assert(isOwningHandle());
setAllowWriteStall(nativeHandle_, allowWriteStall);
return this;
}
/**
* Returns true if writes are allowed to stall for flushes to complete, false
* otherwise.
*
* @return true if writes are allowed to stall for flushes
*/
public boolean allowWriteStall() {
assert(isOwningHandle());
return allowWriteStall(nativeHandle_);
}
private static long newFlushOptionsInance() {
RocksDB.loadLibrary();
return newFlushOptions();
}
private static native long newFlushOptions();
@Override
protected final void disposeInternal(final long handle) {
disposeInternalJni(handle);
}
private static native void disposeInternalJni(final long handle);
private static native void setWaitForFlush(final long handle, final boolean wait);
private static native boolean waitForFlush(final long handle);
private static native void setAllowWriteStall(final long handle, final boolean allowWriteStall);
private static native boolean allowWriteStall(final long handle);
}