ByteArrayBuffer

java.lang.Object
- com.db4o.internal.ByteArrayBuffer

All Implemented Interfaces:

ReadWriteBuffer, ReadBuffer, WriteBuffer

Direct Known Subclasses:

StatefulBuffer
```
public class ByteArrayBuffer
extends java.lang.Object
implements ReadWriteBuffer
```

Field Summary

Fields
Modifier and Type Field and Description

byte[] _buffer

int _offset

Fields
Modifier and Type	Field and Description
`byte[]`	`_buffer`
`int`	`_offset`

Constructor Summary

Constructors
Constructor and Description

ByteArrayBuffer(byte[] buffer)

ByteArrayBuffer(int length)

Constructors
Constructor and Description
`ByteArrayBuffer(byte[] buffer)`
`ByteArrayBuffer(int length)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`append(byte[] bytes)`
`protected boolean`	`canWritePersistentBase()`
`boolean`	`checkXBytes()`
`void`	`checkXBytes(boolean flag)`
`boolean`	`containsTheSame(ByteArrayBuffer other)`
`void`	`copyTo(ByteArrayBuffer to, int fromOffset, int toOffset, int length)`
`void`	`ensureSize(int size)`
`boolean`	`eof()`
`void`	`incrementIntSize()`
`void`	`incrementOffset(int a_by)`
`int`	`length()`
`int`	`offset()` returns the current offset in the buffer
`void`	`read(ObjectContainerBase stream, int address, int addressOffset)` non-encrypted read, used for indexes
`void`	`readBegin(byte identifier)`
`BitMap4`	`readBitMap(int bitCount)`
`byte`	`readByte()` reads a byte from the buffer.
`void`	`readBytes(byte[] bytes)` reads an array of bytes from the buffer.
`byte[]`	`readBytes(int a_length)`
`ByteArrayBuffer`	`readEmbeddedObject(Transaction trans)`
`void`	`readEncrypt(ObjectContainerBase stream, int address)`
`void`	`readEnd()`
`int`	`readInt()` reads an int from the buffer.
`long`	`readLong()` reads a long from the buffer.
`ByteArrayBuffer`	`readPayloadReader(int offset, int length)`
`int`	`remainingByteCount()`
`void`	`seek(int offset)` positions the read pointer at the specified position
`void`	`skip(int length)`
`java.lang.String`	`toString()`
`void`	`writeBegin(byte a_identifier)`
`void`	`writeBitMap(BitMap4 nullBitMap)`
`void`	`writeByte(byte a_byte)` writes a single byte to the buffer.
`void`	`writeBytes(byte[] bytes)` writes an array of bytes to the buffer
`void`	`writeEnd()`
`void`	`writeIDOf(Transaction trans, java.lang.Object obj)`
`void`	`writeIDOf(Transaction trans, PersistentBase persistent)`
`void`	`writeInt(int a_int)` writes an int to the buffer.
`void`	`writeLong(long l)` writes a long to the buffer
`void`	`writeShortString(Transaction trans, java.lang.String a_string)`

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

- Field Detail
  - _buffer
```
public byte[] _buffer
```
  - _offset
```
public int _offset
```
- Constructor Detail
  - ByteArrayBuffer
```
public ByteArrayBuffer(int length)
```
  - ByteArrayBuffer
```
public ByteArrayBuffer(byte[] buffer)
```
- Method Detail
  - seek
```
public void seek(int offset)
```
    Description copied from interface: ReadBuffer
    
    positions the read pointer at the specified position
    
    Specified by:
    
    seek in interface ReadBuffer
    
    Parameters:
    offset - the desired position in the buffer
  - writeBytes
```
public void writeBytes(byte[] bytes)
```
    Description copied from interface: WriteBuffer
    
    writes an array of bytes to the buffer
    
    Specified by:
    
    writeBytes in interface WriteBuffer
    
    Parameters:
    bytes - the byte array
  - append
```
public void append(byte[] bytes)
```
  - containsTheSame
```
public final boolean containsTheSame(ByteArrayBuffer other)
```
  - copyTo
```
public void copyTo(ByteArrayBuffer to,
          int fromOffset,
          int toOffset,
          int length)
```
  - length
```
public int length()
```
    Specified by:
    
    length in interface ReadWriteBuffer
  - incrementOffset
```
public void incrementOffset(int a_by)
```
    Specified by:
    
    incrementOffset in interface ReadWriteBuffer
  - read
```
public void read(ObjectContainerBase stream,
        int address,
        int addressOffset)
```
    non-encrypted read, used for indexes
  - readBegin
```
public final void readBegin(byte identifier)
```
    Specified by:
    
    readBegin in interface ReadWriteBuffer
  - readBitMap
```
public BitMap4 readBitMap(int bitCount)
```
    Specified by:
    
    readBitMap in interface ReadBuffer
  - readByte
```
public byte readByte()
```
    Description copied from interface: ReadBuffer
    
    reads a byte from the buffer.
    
    Specified by:
    
    readByte in interface ReadBuffer
    
    Returns:
    the byte
  - readBytes
```
public byte[] readBytes(int a_length)
```
  - readBytes
```
public void readBytes(byte[] bytes)
```
    Description copied from interface: ReadBuffer
    
    reads an array of bytes from the buffer. The length of the array that is passed as a parameter specifies the number of bytes that are to be read. The passed bytes buffer parameter is directly filled.
    
    Specified by:
    
    readBytes in interface ReadBuffer
    
    Parameters:
    bytes - the byte array to read the bytes into.
  - readEmbeddedObject
```
public final ByteArrayBuffer readEmbeddedObject(Transaction trans)
                                         throws Db4oIOException
```
    Throws:
    
    Db4oIOException
  - readEncrypt
```
public void readEncrypt(ObjectContainerBase stream,
               int address)
                 throws Db4oIOException
```
    Throws:
    
    Db4oIOException
  - readEnd
```
public void readEnd()
```
    Specified by:
    
    readEnd in interface ReadWriteBuffer
  - readInt
```
public final int readInt()
```
    Description copied from interface: ReadBuffer
    
    reads an int from the buffer.
    
    Specified by:
    
    readInt in interface ReadBuffer
    
    Returns:
    the int
  - readLong
```
public long readLong()
```
    Description copied from interface: ReadBuffer
    
    reads a long from the buffer.
    
    Specified by:
    
    readLong in interface ReadBuffer
    
    Returns:
    the long
  - readPayloadReader
```
public ByteArrayBuffer readPayloadReader(int offset,
                                int length)
```
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - writeBegin
```
public void writeBegin(byte a_identifier)
```
  - writeBitMap
```
public final void writeBitMap(BitMap4 nullBitMap)
```
  - writeByte
```
public final void writeByte(byte a_byte)
```
    Description copied from interface: WriteBuffer
    
    writes a single byte to the buffer.
    
    Specified by:
    
    writeByte in interface WriteBuffer
    
    Parameters:
    a_byte - the byte
  - writeEnd
```
public void writeEnd()
```
  - writeInt
```
public final void writeInt(int a_int)
```
    Description copied from interface: WriteBuffer
    
    writes an int to the buffer.
    
    Specified by:
    
    writeInt in interface WriteBuffer
    
    Parameters:
    a_int - the int
  - writeIDOf
```
public void writeIDOf(Transaction trans,
             java.lang.Object obj)
```
  - writeIDOf
```
public void writeIDOf(Transaction trans,
             PersistentBase persistent)
```
  - canWritePersistentBase
```
protected boolean canWritePersistentBase()
```
  - writeShortString
```
public void writeShortString(Transaction trans,
                    java.lang.String a_string)
```
  - writeLong
```
public void writeLong(long l)
```
    Description copied from interface: WriteBuffer
    
    writes a long to the buffer
    
    Specified by:
    
    writeLong in interface WriteBuffer
    
    Parameters:
    l - the long
  - incrementIntSize
```
public void incrementIntSize()
```
    Specified by:
    
    incrementIntSize in interface ReadWriteBuffer
  - offset
```
public int offset()
```
    Description copied from interface: ReadBuffer
    
    returns the current offset in the buffer
    
    Specified by:
    
    offset in interface ReadBuffer
    
    Returns:
    the offset
  - ensureSize
```
public void ensureSize(int size)
```
  - skip
```
public void skip(int length)
```
  - checkXBytes
```
public void checkXBytes(boolean flag)
```
  - checkXBytes
```
public boolean checkXBytes()
```
  - eof
```
public boolean eof()
```
  - remainingByteCount
```
public int remainingByteCount()
```

Class ByteArrayBuffer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

_buffer

_offset

Constructor Detail

ByteArrayBuffer

ByteArrayBuffer

Method Detail

seek

writeBytes

append

containsTheSame

copyTo

length

incrementOffset

read

readBegin

readBitMap

readByte

readBytes

readBytes

readEmbeddedObject

readEncrypt

readEnd

readInt

readLong

readPayloadReader

toString

writeBegin

writeBitMap

writeByte

writeEnd

writeInt

writeIDOf

writeIDOf

canWritePersistentBase

writeShortString

writeLong

incrementIntSize

offset

ensureSize

skip

checkXBytes

checkXBytes

eof

remainingByteCount