org.bitlap.roaringbitmap

类 ConstantMemoryContainerAppender<T extends BitmapDataProvider & AppendableStorage<Container>>

java.lang.Object

org.bitlap.roaringbitmap.ConstantMemoryContainerAppender<T>

所有已实现的接口:

java.util.function.Supplier<T>, RoaringBitmapWriter<T>

public class ConstantMemoryContainerAppender<T extends BitmapDataProvider & AppendableStorage<Container>>
extends java.lang.Object
implements RoaringBitmapWriter<T>

This class can be used to write quickly values to a bitmap. The values are expected to be (increasing) sorted order. Values are first written to a temporary internal buffer, but the underlying bitmap can forcefully synchronize by calling "flush" (although calling flush to often would defeat the performance purpose of this class). The main use case for an ConstantMemoryContainerAppender is to get bitmaps quickly. You should benchmark your particular use case to see if it helps.

 

       //...


       RoaringBitmapWriter<RoaringBitmap> writer =
            RoaringBitmapWriter.writer().constantMemory().get();
       for (int i :....) {
         writer.add(i);
       }
       writer.flush(); // important
 
 

嵌套类概要

从接口继承的嵌套类/接口 org.bitlap.roaringbitmap.RoaringBitmapWriter

RoaringBitmapWriter.BufferWizard, RoaringBitmapWriter.FastRankRoaringBitmapWizard, RoaringBitmapWriter.RoaringBitmapWizard, RoaringBitmapWriter.RoaringWizard<T extends RoaringBitmap>, RoaringBitmapWriter.Wizard<C extends WordStorage<C>,T extends BitmapDataProvider & AppendableStorage<C>>

方法概要

限定符和类型	方法和说明
void	add(int value) Adds the value to the underlying bitmap.
void	add(long min, long max) Add a range to the bitmap
void	addMany(int... values) Adds many values to the bitmap.
void	flush() Ensures that any buffered additions are flushed to the underlying bitmap.
T	getUnderlying() Grab a reference to the underlying bitmap
void	reset() Resets the writer so it can be reused, must release the reference to the underlying bitmap

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.bitlap.roaringbitmap.RoaringBitmapWriter

bufferWriter, get, writer

方法详细资料

getUnderlying

public T getUnderlying()

Grab a reference to the underlying bitmap

指定者:

getUnderlying 在接口中 RoaringBitmapWriter<T extends BitmapDataProvider & AppendableStorage<Container>>

返回:

the underlying bitmap

add

public void add(int value)

Adds the value to the underlying bitmap. The data might be added to a temporary buffer. You should call "flush" when you are done.

指定者:

add 在接口中 RoaringBitmapWriter<T extends BitmapDataProvider & AppendableStorage<Container>>

参数:

value - the value to add.

addMany

public void addMany(int... values)

从接口复制的说明: RoaringBitmapWriter

Adds many values to the bitmap.

指定者:

addMany 在接口中 RoaringBitmapWriter<T extends BitmapDataProvider & AppendableStorage<Container>>

参数:

values - the values to add

add

public void add(long min,
                long max)

从接口复制的说明: RoaringBitmapWriter

Add a range to the bitmap

指定者:

add 在接口中 RoaringBitmapWriter<T extends BitmapDataProvider & AppendableStorage<Container>>

参数:

min - the inclusive min value

max - the exclusive max value

flush

public void flush()

Ensures that any buffered additions are flushed to the underlying bitmap.

指定者:

flush 在接口中 RoaringBitmapWriter<T extends BitmapDataProvider & AppendableStorage<Container>>

reset

public void reset()

从接口复制的说明: RoaringBitmapWriter

Resets the writer so it can be reused, must release the reference to the underlying bitmap

指定者:

reset 在接口中 RoaringBitmapWriter<T extends BitmapDataProvider & AppendableStorage<Container>>