KafkaLZ4BlockOutputStream (JoyQueue-Broker-Kafka 4.2.4-RC2 API)

java.lang.Object
- java.io.OutputStream
- - java.io.FilterOutputStream
  - - org.joyqueue.broker.kafka.message.compressor.lz4.KafkaLZ4BlockOutputStream

所有已实现的接口:

Closeable, Flushable, AutoCloseable
```
public final class KafkaLZ4BlockOutputStream
extends FilterOutputStream
```
A partial implementation of the v1.4.1 LZ4 Frame format.

另请参阅:

LZ4 Framing Format Spec

嵌套类概要

嵌套类
限定符和类型类和说明

static class KafkaLZ4BlockOutputStream.BD

static class KafkaLZ4BlockOutputStream.FLG

嵌套类
限定符和类型	类和说明
`static class`	`KafkaLZ4BlockOutputStream.BD`
`static class`	`KafkaLZ4BlockOutputStream.FLG`

字段概要

字段
限定符和类型	字段和说明
`static int`	`BLOCKSIZE_1MB`
`static int`	`BLOCKSIZE_256KB`
`static int`	`BLOCKSIZE_4MB`
`static int`	`BLOCKSIZE_64KB`
`static String`	`CLOSED_STREAM`
`static int`	`LZ4_FRAME_INCOMPRESSIBLE_MASK`
`static int`	`LZ4_MAX_HEADER_LENGTH`
`static int`	`MAGIC`

从类继承的字段 java.io.FilterOutputStream
out

构造器概要

构造器
构造器和说明
`KafkaLZ4BlockOutputStream(OutputStream out)` Create a new `OutputStream` that will compress data using the LZ4 algorithm.
`KafkaLZ4BlockOutputStream(OutputStream out, int blockSize)` Create a new `OutputStream` that will compress data using the LZ4 algorithm.
`KafkaLZ4BlockOutputStream(OutputStream out, int blockSize, boolean blockChecksum)` Create a new `OutputStream` that will compress data using the LZ4 algorithm.

方法概要

所有方法实例方法具体方法
限定符和类型方法和说明

void close()

void flush()

void write(byte[] b, int off, int len)

void write(int b)
- 从类继承的方法 java.io.FilterOutputStream
  write
- 从类继承的方法 java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`close()`
`void`	`flush()`
`void`	`write(byte[] b, int off, int len)`
`void`	`write(int b)`

- 字段详细资料
  - MAGIC
```
public static final int MAGIC
```
    另请参阅:
    
    常量字段值
  - LZ4_MAX_HEADER_LENGTH
```
public static final int LZ4_MAX_HEADER_LENGTH
```
    另请参阅:
    
    常量字段值
  - LZ4_FRAME_INCOMPRESSIBLE_MASK
```
public static final int LZ4_FRAME_INCOMPRESSIBLE_MASK
```
    另请参阅:
    
    常量字段值
  - CLOSED_STREAM
```
public static final String CLOSED_STREAM
```
    另请参阅:
    
    常量字段值
  - BLOCKSIZE_64KB
```
public static final int BLOCKSIZE_64KB
```
    另请参阅:
    
    常量字段值
  - BLOCKSIZE_256KB
```
public static final int BLOCKSIZE_256KB
```
    另请参阅:
    
    常量字段值
  - BLOCKSIZE_1MB
```
public static final int BLOCKSIZE_1MB
```
    另请参阅:
    
    常量字段值
  - BLOCKSIZE_4MB
```
public static final int BLOCKSIZE_4MB
```
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - KafkaLZ4BlockOutputStream
```
public KafkaLZ4BlockOutputStream(OutputStream out,
                                 int blockSize,
                                 boolean blockChecksum)
                          throws IOException
```
    Create a new OutputStream that will compress data using the LZ4 algorithm.
    
    参数:
    
    out - The output stream to compress
    
    blockSize - Default: 4. The block size used during compression. 4=64kb, 5=256kb, 6=1mb, 7=4mb. All other values will generate an exception
    
    blockChecksum - Default: false. When true, a XXHash32 checksum is computed and appended to the stream for every block of data
    
    抛出:
    
    IOException
  - KafkaLZ4BlockOutputStream
```
public KafkaLZ4BlockOutputStream(OutputStream out,
                                 int blockSize)
                          throws IOException
```
    Create a new OutputStream that will compress data using the LZ4 algorithm.
    
    参数:
    
    out - The stream to compress
    
    blockSize - Default: 4. The block size used during compression. 4=64kb, 5=256kb, 6=1mb, 7=4mb. All other values will generate an exception
    
    抛出:
    
    IOException
  - KafkaLZ4BlockOutputStream
```
public KafkaLZ4BlockOutputStream(OutputStream out)
                          throws IOException
```
    Create a new OutputStream that will compress data using the LZ4 algorithm.
    
    参数:
    
    out - The output stream to compress
    
    抛出:
    
    IOException
- 方法详细资料
  - write
```
public void write(int b)
           throws IOException
```
    覆盖:
    
    write 在类中 FilterOutputStream
    
    抛出:
    
    IOException
  - write
```
public void write(byte[] b,
                  int off,
                  int len)
           throws IOException
```
    覆盖:
    
    write 在类中 FilterOutputStream
    
    抛出:
    
    IOException
  - flush
```
public void flush()
           throws IOException
```
    指定者:
    
    flush 在接口中 Flushable
    
    覆盖:
    
    flush 在类中 FilterOutputStream
    
    抛出:
    
    IOException
  - close
```
public void close()
           throws IOException
```
    指定者:
    
    close 在接口中 Closeable
    
    指定者:
    
    close 在接口中 AutoCloseable
    
    覆盖:
    
    close 在类中 FilterOutputStream
    
    抛出:
    
    IOException

类 KafkaLZ4BlockOutputStream

嵌套类概要

字段概要

从类继承的字段 java.io.FilterOutputStream

构造器概要

方法概要

从类继承的方法 java.io.FilterOutputStream

从类继承的方法 java.lang.Object

字段详细资料

MAGIC

LZ4_MAX_HEADER_LENGTH

LZ4_FRAME_INCOMPRESSIBLE_MASK

CLOSED_STREAM

BLOCKSIZE_64KB

BLOCKSIZE_256KB

BLOCKSIZE_1MB

BLOCKSIZE_4MB

构造器详细资料

KafkaLZ4BlockOutputStream

KafkaLZ4BlockOutputStream

KafkaLZ4BlockOutputStream

方法详细资料

write

write

flush

close