org.h2.mvstore

Class WriteBuffer

java.lang.Object

org.h2.mvstore.WriteBuffer

public class WriteBuffer
extends java.lang.Object

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

Constructor Summary

Constructors

Constructor and Description
WriteBuffer()
WriteBuffer(int initialSize)

Method Summary

Modifier and Type	Method and Description
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(int initialSize)

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