org.h2.mvstore
Class WriteBuffer

java.lang.Object
  extended by org.h2.mvstore.WriteBuffer

public class WriteBuffer
extends java.lang.Object

An auto-resize buffer to write data into a ByteBuffer.


Constructor Summary
WriteBuffer()
           
 
Method Summary
 int capacity()
          Get the capacity.
 WriteBuffer clear()
          Clear the buffer after use.
 WriteBuffer get(byte[] dst)
          Copy the data into the destination array.
 java.nio.ByteBuffer getBuffer()
          Get the byte buffer.
 int limit()
          Get the limit.
 WriteBuffer limit(int newLimit)
          Set the limit, possibly growing the buffer.
 int position()
          Get the current position.
 WriteBuffer position(int newPosition)
          Set the position.
 WriteBuffer put(byte x)
          Put a byte.
 WriteBuffer put(byte[] bytes)
          Put a byte array.
 WriteBuffer put(byte[] bytes, int offset, int length)
          Put a byte array.
 WriteBuffer put(java.nio.ByteBuffer src)
          Put the contents of a byte buffer.
 WriteBuffer putChar(char x)
          Put a character.
 WriteBuffer putDouble(double x)
          Put a double.
 WriteBuffer putFloat(float x)
          Put a float.
 WriteBuffer putInt(int x)
          Put an integer.
 WriteBuffer putInt(int index, int value)
          Update an integer at the given index.
 WriteBuffer putLong(long x)
          Put a long.
 WriteBuffer putShort(int index, short value)
          Update a short at the given index.
 WriteBuffer putShort(short x)
          Put a short.
 WriteBuffer putStringData(java.lang.String s, int len)
          Write the characters of a string in a format similar to UTF-8.
 WriteBuffer putVarInt(int x)
          Write a variable size integer.
 WriteBuffer putVarLong(long x)
          Write a variable size long.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

WriteBuffer

public WriteBuffer()
Method Detail

putVarInt

public WriteBuffer putVarInt(int x)
Write a variable size integer.

Parameters:
x - the value
Returns:
this

putVarLong

public WriteBuffer putVarLong(long x)
Write a variable size long.

Parameters:
x - the value
Returns:
this

putStringData

public WriteBuffer putStringData(java.lang.String s,
                                 int len)
Write the characters of a string in a format similar to UTF-8.

Parameters:
s - the string
len - the number of characters to write
Returns:
this

put

public WriteBuffer put(byte x)
Put a byte.

Parameters:
x - the value
Returns:
this

putChar

public WriteBuffer putChar(char x)
Put a character.

Parameters:
x - the value
Returns:
this

putShort

public WriteBuffer putShort(short x)
Put a short.

Parameters:
x - the value
Returns:
this

putInt

public WriteBuffer putInt(int x)
Put an integer.

Parameters:
x - the value
Returns:
this

putLong

public WriteBuffer putLong(long x)
Put a long.

Parameters:
x - the value
Returns:
this

putFloat

public WriteBuffer putFloat(float x)
Put a float.

Parameters:
x - the value
Returns:
this

putDouble

public WriteBuffer putDouble(double x)
Put a double.

Parameters:
x - the value
Returns:
this

put

public WriteBuffer put(byte[] bytes)
Put a byte array.

Parameters:
bytes - the value
Returns:
this

put

public WriteBuffer put(byte[] bytes,
                       int offset,
                       int length)
Put a byte array.

Parameters:
bytes - the value
offset - the source offset
length - the number of bytes
Returns:
this

put

public WriteBuffer put(java.nio.ByteBuffer src)
Put the contents of a byte buffer.

Parameters:
src - the source buffer
Returns:
this

limit

public WriteBuffer limit(int newLimit)
Set the limit, possibly growing the buffer.

Parameters:
newLimit - the new limit
Returns:
this

capacity

public int capacity()
Get the capacity.

Returns:
the capacity

position

public WriteBuffer position(int newPosition)
Set the position.

Parameters:
newPosition - the new position
Returns:
the new position

limit

public int limit()
Get the limit.

Returns:
the limit

position

public int position()
Get the current position.

Returns:
the position

get

public WriteBuffer get(byte[] dst)
Copy the data into the destination array.

Parameters:
dst - the destination array
Returns:
this

putInt

public WriteBuffer putInt(int index,
                          int value)
Update an integer at the given index.

Parameters:
index - the index
value - the value
Returns:
this

putShort

public WriteBuffer putShort(int index,
                            short value)
Update a short at the given index.

Parameters:
index - the index
value - the value
Returns:
this

clear

public WriteBuffer clear()
Clear the buffer after use.

Returns:
this

getBuffer

public java.nio.ByteBuffer getBuffer()
Get the byte buffer.

Returns:
the byte buffer