Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Berkeley DB version 4.4.20
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## com.sleepycat.bind.serial
Class SerialBase

    java.lang.Object
      com.sleepycat.bind.serial.SerialBase

Direct Known Subclasses:
  SerialBinding

public class SerialBase
extends Object

A base class for serial bindings creators that provides control over the allocation of the output buffer.

Serial bindings append data to a `FastOutputStream` instance. This object has a byte array buffer that is resized when it is full. The reallocation of this buffer can be a performance factor for some applications using large objects. To manage this issue, the `setSerialBufferSize(int)` method may be used to control the initial size of the buffer, and the `getSerialOutput(java.lang.Object)` method may be overridden by subclasses to take over creation of the FastOutputStream object.

Constructor Summary
`SerialBase()` Initializes the initial output buffer size to zero.

Method Summary
`int` | `getSerialBufferSize()` Returns the initial byte size of the output buffer.
`protected FastOutputStream` | `getSerialOutput(Object object)` Returns an empty SerialOutput instance that will be used by the serial binding or key creator.
`void` | `setSerialBufferSize(int byteSize)` Sets the initial byte size of the output buffer that is allocated by the default implementation of `getSerialOutput(java.lang.Object)`.

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

Constructor Detail

### SerialBase

    public SerialBase()

  Initializes the initial output buffer size to zero.

  Unless `setSerialBufferSize(int)` is called, the default `FastOutputStream.DEFAULT_INIT_SIZE` size will be used.

Method Detail

### setSerialBufferSize

    public void setSerialBufferSize(int byteSize)

  Sets the initial byte size of the output buffer that is allocated by the default implementation of `getSerialOutput(java.lang.Object)`.

  If this property is zero (the default), the default `FastOutputStream.DEFAULT_INIT_SIZE` size is used.

  Parameters:
    `byteSize` - the initial byte size of the output buffer, or zero to use the default size.

### getSerialBufferSize

    public int getSerialBufferSize()

  Returns the initial byte size of the output buffer.

  Returns:
    the initial byte size of the output buffer.
  See Also:
    `setSerialBufferSize(int)`

### getSerialOutput

    protected FastOutputStream getSerialOutput(Object object)

  Returns an empty SerialOutput instance that will be used by the serial binding or key creator.

  The default implementation of this method creates a new SerialOutput with an initial buffer size that can be changed using the `setSerialBufferSize(int)` method.

  This method may be overridden to return a FastOutputStream instance. For example, an instance per thread could be created and returned by this method. If a FastOutputStream instance is reused, be sure to call its `FastOutputStream.reset()` method before each use.

  Parameters:
    `object` - is the object to be written to the serial output, and may be used by subclasses to determine the size of the output buffer.
  Returns:
    an empty FastOutputStream instance.
  See Also:
    `setSerialBufferSize(int)`

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Berkeley DB version 4.4.20
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Copyright (c) 1996-2005 Sleepycat Software, Inc. - All rights reserved.