PreferHeapByteBufAllocator (Netty API Reference (4.1.128.Final))

java.lang.Object
- io.netty.channel.PreferHeapByteBufAllocator

All Implemented Interfaces:

ByteBufAllocator
```
@UnstableApi
public final class PreferHeapByteBufAllocator
extends Object
implements ByteBufAllocator
```
Wraps another ByteBufAllocator and use heapbuffers everywhere except when a direct buffer is explicit requested.

Field Summary
- Fields inherited from interface io.netty.buffer.ByteBufAllocator
  DEFAULT

Constructor Summary

Constructors
Constructor and Description

PreferHeapByteBufAllocator(ByteBufAllocator allocator)

Constructors
Constructor and Description
`PreferHeapByteBufAllocator(ByteBufAllocator allocator)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`ByteBuf`	`buffer()` Allocate a `ByteBuf`.
`ByteBuf`	`buffer(int initialCapacity)` Allocate a `ByteBuf` with the given initial capacity.
`ByteBuf`	`buffer(int initialCapacity, int maxCapacity)` Allocate a `ByteBuf` with the given initial capacity and the given maximal capacity.
`int`	`calculateNewCapacity(int minNewCapacity, int maxCapacity)` Calculate the new capacity of a `ByteBuf` that is used when a `ByteBuf` needs to expand by the `minNewCapacity` with `maxCapacity` as upper-bound.
`CompositeByteBuf`	`compositeBuffer()` Allocate a `CompositeByteBuf`.
`CompositeByteBuf`	`compositeBuffer(int maxNumComponents)` Allocate a `CompositeByteBuf` with the given maximum number of components that can be stored in it.
`CompositeByteBuf`	`compositeDirectBuffer()` Allocate a direct `CompositeByteBuf`.
`CompositeByteBuf`	`compositeDirectBuffer(int maxNumComponents)` Allocate a direct `CompositeByteBuf` with the given maximum number of components that can be stored in it.
`CompositeByteBuf`	`compositeHeapBuffer()` Allocate a heap `CompositeByteBuf`.
`CompositeByteBuf`	`compositeHeapBuffer(int maxNumComponents)` Allocate a heap `CompositeByteBuf` with the given maximum number of components that can be stored in it.
`ByteBuf`	`directBuffer()` Allocate a direct `ByteBuf`.
`ByteBuf`	`directBuffer(int initialCapacity)` Allocate a direct `ByteBuf` with the given initial capacity.
`ByteBuf`	`directBuffer(int initialCapacity, int maxCapacity)` Allocate a direct `ByteBuf` with the given initial capacity and the given maximal capacity.
`ByteBuf`	`heapBuffer()` Allocate a heap `ByteBuf`.
`ByteBuf`	`heapBuffer(int initialCapacity)` Allocate a heap `ByteBuf` with the given initial capacity.
`ByteBuf`	`heapBuffer(int initialCapacity, int maxCapacity)` Allocate a heap `ByteBuf` with the given initial capacity and the given maximal capacity.
`ByteBuf`	`ioBuffer()` Allocate a `ByteBuf`, preferably a direct buffer which is suitable for I/O.
`ByteBuf`	`ioBuffer(int initialCapacity)` Allocate a `ByteBuf`, preferably a direct buffer which is suitable for I/O.
`ByteBuf`	`ioBuffer(int initialCapacity, int maxCapacity)` Allocate a `ByteBuf`, preferably a direct buffer which is suitable for I/O.
`boolean`	`isDirectBufferPooled()` Returns `true` if direct `ByteBuf`'s are pooled

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

- Constructor Detail
  - PreferHeapByteBufAllocator
```
public PreferHeapByteBufAllocator(ByteBufAllocator allocator)
```
- Method Detail
  - buffer
```
public ByteBuf buffer()
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a ByteBuf. If it is a direct or heap buffer depends on the actual implementation.
    
    Specified by:
    
    buffer in interface ByteBufAllocator
  - buffer
```
public ByteBuf buffer(int initialCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a ByteBuf with the given initial capacity. If it is a direct or heap buffer depends on the actual implementation.
    
    Specified by:
    
    buffer in interface ByteBufAllocator
  - buffer
```
public ByteBuf buffer(int initialCapacity,
                      int maxCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a ByteBuf with the given initial capacity and the given maximal capacity. If it is a direct or heap buffer depends on the actual implementation.
    
    Specified by:
    
    buffer in interface ByteBufAllocator
  - ioBuffer
```
public ByteBuf ioBuffer()
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a ByteBuf, preferably a direct buffer which is suitable for I/O.
    
    Specified by:
    
    ioBuffer in interface ByteBufAllocator
  - ioBuffer
```
public ByteBuf ioBuffer(int initialCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a ByteBuf, preferably a direct buffer which is suitable for I/O.
    
    Specified by:
    
    ioBuffer in interface ByteBufAllocator
  - ioBuffer
```
public ByteBuf ioBuffer(int initialCapacity,
                        int maxCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a ByteBuf, preferably a direct buffer which is suitable for I/O.
    
    Specified by:
    
    ioBuffer in interface ByteBufAllocator
  - heapBuffer
```
public ByteBuf heapBuffer()
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a heap ByteBuf.
    
    Specified by:
    
    heapBuffer in interface ByteBufAllocator
  - heapBuffer
```
public ByteBuf heapBuffer(int initialCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a heap ByteBuf with the given initial capacity.
    
    Specified by:
    
    heapBuffer in interface ByteBufAllocator
  - heapBuffer
```
public ByteBuf heapBuffer(int initialCapacity,
                          int maxCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a heap ByteBuf with the given initial capacity and the given maximal capacity.
    
    Specified by:
    
    heapBuffer in interface ByteBufAllocator
  - directBuffer
```
public ByteBuf directBuffer()
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a direct ByteBuf.
    
    Specified by:
    
    directBuffer in interface ByteBufAllocator
  - directBuffer
```
public ByteBuf directBuffer(int initialCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a direct ByteBuf with the given initial capacity.
    
    Specified by:
    
    directBuffer in interface ByteBufAllocator
  - directBuffer
```
public ByteBuf directBuffer(int initialCapacity,
                            int maxCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a direct ByteBuf with the given initial capacity and the given maximal capacity.
    
    Specified by:
    
    directBuffer in interface ByteBufAllocator
  - compositeBuffer
```
public CompositeByteBuf compositeBuffer()
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a CompositeByteBuf. If it is a direct or heap buffer depends on the actual implementation.
    
    Specified by:
    
    compositeBuffer in interface ByteBufAllocator
  - compositeBuffer
```
public CompositeByteBuf compositeBuffer(int maxNumComponents)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a CompositeByteBuf with the given maximum number of components that can be stored in it. If it is a direct or heap buffer depends on the actual implementation.
    
    Specified by:
    
    compositeBuffer in interface ByteBufAllocator
  - compositeHeapBuffer
```
public CompositeByteBuf compositeHeapBuffer()
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a heap CompositeByteBuf.
    
    Specified by:
    
    compositeHeapBuffer in interface ByteBufAllocator
  - compositeHeapBuffer
```
public CompositeByteBuf compositeHeapBuffer(int maxNumComponents)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a heap CompositeByteBuf with the given maximum number of components that can be stored in it.
    
    Specified by:
    
    compositeHeapBuffer in interface ByteBufAllocator
  - compositeDirectBuffer
```
public CompositeByteBuf compositeDirectBuffer()
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a direct CompositeByteBuf.
    
    Specified by:
    
    compositeDirectBuffer in interface ByteBufAllocator
  - compositeDirectBuffer
```
public CompositeByteBuf compositeDirectBuffer(int maxNumComponents)
```
    Description copied from interface: ByteBufAllocator
    
    Allocate a direct CompositeByteBuf with the given maximum number of components that can be stored in it.
    
    Specified by:
    
    compositeDirectBuffer in interface ByteBufAllocator
  - isDirectBufferPooled
```
public boolean isDirectBufferPooled()
```
    Description copied from interface: ByteBufAllocator
    
    Returns true if direct ByteBuf's are pooled
    
    Specified by:
    
    isDirectBufferPooled in interface ByteBufAllocator
  - calculateNewCapacity
```
public int calculateNewCapacity(int minNewCapacity,
                                int maxCapacity)
```
    Description copied from interface: ByteBufAllocator
    
    Calculate the new capacity of a ByteBuf that is used when a ByteBuf needs to expand by the minNewCapacity with maxCapacity as upper-bound.
    
    Specified by:
    
    calculateNewCapacity in interface ByteBufAllocator

Class PreferHeapByteBufAllocator

Field Summary

Fields inherited from interface io.netty.buffer.ByteBufAllocator

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

PreferHeapByteBufAllocator

Method Detail

buffer

buffer

buffer

ioBuffer

ioBuffer

ioBuffer

heapBuffer

heapBuffer

heapBuffer

directBuffer

directBuffer

directBuffer

compositeBuffer

compositeBuffer

compositeHeapBuffer

compositeHeapBuffer

compositeDirectBuffer

compositeDirectBuffer

isDirectBufferPooled

calculateNewCapacity