AbstractBlockPackedWriter (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.index.sai.disk.v1.bitpack.AbstractBlockPackedWriter

Direct Known Subclasses:

BlockPackedWriter, MonotonicBlockPackedWriter
```
public abstract class AbstractBlockPackedWriter
extends java.lang.Object
```
Modified copy of org.apache.lucene.util.packed.AbstractBlockPackedWriter to use DirectWriter for optimised reads that doesn't require seeking through the whole file to open a thread-exclusive reader.

Field Summary

Fields
Modifier and Type	Field	Description
`protected int`	`blockIndex`
`protected ResettableByteBuffersIndexOutput`	`blockMetaWriter`
`protected long[]`	`blockValues`
`protected boolean`	`finished`
`protected org.apache.lucene.store.IndexOutput`	`indexOutput`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(long l)`	Append a new long.
`long`	`finish()`	Flush all buffered data to disk.
`protected abstract void`	`flushBlock()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

indexOutput

protected final org.apache.lucene.store.IndexOutput indexOutput

blockValues
```
protected final long[] blockValues
```

blockMetaWriter

protected final ResettableByteBuffersIndexOutput blockMetaWriter

blockIndex
```
protected int blockIndex
```

finished
```
protected boolean finished
```

Method Detail
- add
```
public void add(long l)
         throws java.io.IOException
```
  Append a new long.
  
  Throws:
  
  java.io.IOException
- finish
```
public long finish()
            throws java.io.IOException
```
  Flush all buffered data to disk. This instance is not usable anymore after this method has been called.
  
  Returns:
  
  a file offset to the block metadata
  
  Throws:
  
  java.io.IOException
- flushBlock
```
protected abstract void flushBlock()
                            throws java.io.IOException
```
  Throws:
  
  java.io.IOException