H2 Database Engine 2.3.232 · org.h2.store.Data · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private byte[]	data The data itself.
private int	pos The current write or read position.

Access	Constructor and Description
private	Data(byte[] data)

Method Summary

Modifier and Type	Method and Description
public void	checkCapacity(int the number of additional bytes required plus) Check if there is still enough capacity in the buffer.
public static void	copyString(Reader the reader source, OutputStream the output stream target) Copy a String from a reader to an output stream.
public static Data	Returns: the buffer create(int the initial capacity of the buffer capacity) Create a new buffer.
private void	expand(int plus)
public void	fillAligned() Fill up the buffer with empty space and an (initially empty) checksum until the size is a multiple of Constants.FILE_BLOCK_SIZE.
public byte[]	Returns: the byte array getBytes() Get the byte array used for this page.
public int	Returns: the length length() Get the current write position of this buffer, which is the current length.
public void	read(byte[] the output buffer buff, int the offset in the output buffer off, int the number of bytes to copy len) Copy a number of bytes to the given buffer from the current position.
public byte	Returns: the value readByte() Read one single byte.
public int	Returns: the value readInt() Read an integer at the current position.
public void	reset() Set the position to 0.
public void	setPos(int the new position pos) Set the current read / write position.
public void	write(byte[] the data buff, int the offset in the data off, int the length in bytes len) Append a number of bytes to this buffer.
public void	writeInt(int the value x) Write an integer at the current position.
private void	writeStringWithoutLength(char[] chars, int len)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

data	back to summary
private byte[] data The data itself.

pos	back to summary
private int pos The current write or read position.

Data	back to summary
private Data(byte[] data)

Method Detail

checkCapacity	back to summary
public void checkCapacity(int plus) Check if there is still enough capacity in the buffer. This method extends the buffer if required. Parameters plus:int the number of additional bytes required

checkCapacity

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public void checkCapacity(int plus)

Check if there is still enough capacity in the buffer. This method extends the buffer if required.

Parameters

plus:int: the number of additional bytes required

copyString	back to summary
public static void copyString(Reader source, OutputStream target) throws IOException Copy a String from a reader to an output stream. Parameters source:Reader the reader target:OutputStream the output stream Exceptions IOException: on failure

copyString

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public static void copyString(Reader source, OutputStream target) throws IOException

Copy a String from a reader to an output stream.

Parameters

source:Reader: the reader
target:OutputStream: the output stream

Exceptions

IOException:: on failure

create	back to summary
public static Data create(int capacity) Create a new buffer. Parameters capacity:int the initial capacity of the buffer Returns:Data the buffer

create

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public static Data create(int capacity)

Create a new buffer.

Parameters

capacity:int: the initial capacity of the buffer

Returns:Data

the buffer

expand	back to summary
private void expand(int plus)

fillAligned	back to summary
public void fillAligned() Fill up the buffer with empty space and an (initially empty) checksum until the size is a multiple of Constants.FILE_BLOCK_SIZE.

getBytes	back to summary
public byte[] getBytes() Get the byte array used for this page. Returns:byte[] the byte array

getBytes

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public byte[] getBytes()

Get the byte array used for this page.

Returns:byte[]: the byte array

length	back to summary
public int length() Get the current write position of this buffer, which is the current length. Returns:int the length

length

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public int length()

Get the current write position of this buffer, which is the current length.

Returns:int: the length

read	back to summary
public void read(byte[] buff, int off, int len) Copy a number of bytes to the given buffer from the current position. The current position is incremented accordingly. Parameters buff:byte[] the output buffer off:int the offset in the output buffer len:int the number of bytes to copy

read

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public void read(byte[] buff, int off, int len)

Copy a number of bytes to the given buffer from the current position. The current position is incremented accordingly.

Parameters

buff:byte[]: the output buffer
off:int: the offset in the output buffer
len:int: the number of bytes to copy

readByte	back to summary
public byte readByte() Read one single byte. Returns:byte the value

readByte

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public byte readByte()

Read one single byte.

Returns:byte: the value

readInt	back to summary
public int readInt() Read an integer at the current position. The current position is incremented. Returns:int the value

readInt

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public int readInt()

Read an integer at the current position. The current position is incremented.

Returns:int: the value

reset	back to summary
public void reset() Set the position to 0.

setPos	back to summary
public void setPos(int pos) Set the current read / write position. Parameters pos:int the new position

setPos

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public void setPos(int pos)

Set the current read / write position.

Parameters

pos:int: the new position

write	back to summary
public void write(byte[] buff, int off, int len) Append a number of bytes to this buffer. Parameters buff:byte[] the data off:int the offset in the data len:int the length in bytes

write

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public void write(byte[] buff, int off, int len)

Append a number of bytes to this buffer.

Parameters

buff:byte[]: the data
off:int: the offset in the data
len:int: the length in bytes

writeInt	back to summary
public void writeInt(int x) Write an integer at the current position. The current position is incremented. Parameters x:int the value

writeInt

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public void writeInt(int x)

Write an integer at the current position. The current position is incremented.

Parameters

x:int: the value

writeStringWithoutLength	back to summary
private void writeStringWithoutLength(char[] chars, int len)

public Class Data

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Field Detail

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Method Detail