com.sleepycat.db
Class HeapRecordId

java.lang.Object
  com.sleepycat.db.HeapRecordId

public class HeapRecordId
extends Object

Content used for the key in a Heap database record. Berkeley DB creates this value for you when you create a record in a Heap database. You should never create this structure yourself; Berkeley DB must create it for you. This structure is returned in the key DatabaseEntry parameter of the method that you use to add a record to the Heap database.

Constructor Summary

HeapRecordId(int pgno, short indx)
Construct a new record id, given a page number and index.

Method Summary

static HeapRecordId	fromArray(byte[] data) Construct a HeapRecordId from a byte array, typically from a DatabaseEntry.
static HeapRecordId	fromArray(byte[] data, ByteOrder order) Construct a HeapRecordId from a byte array, typically from a DatabaseEntry.
short	getIndex() Get the index in the offset table where the record can be found.
int	getPageNumber() Get the database page number where the record is stored.
void	setIndex(short indx) Set the index in the offset table where the record can be found.
void	setPageNumber(int pgno) Set the database page number where the record is stored.
byte[]	toArray() Return a byte array representing this record id.
byte[]	toArray(ByteOrder order) Return a byte array representing this record id.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HeapRecordId

public HeapRecordId(int pgno,
                    short indx)

Construct a new record id, given a page number and index.

Parameters:

pgno - The database page number where the record is stored.

indx - Index in the offset table where the record can be found.

Method Detail

fromArray

public static HeapRecordId fromArray(byte[] data)
                              throws IllegalArgumentException

Construct a HeapRecordId from a byte array, typically from a DatabaseEntry.

Parameters:

data - The array representing the record id.

Returns:

A new HeapRecordId

Throws:

IllegalArgumentException

fromArray

public static HeapRecordId fromArray(byte[] data,
                                     ByteOrder order)
                              throws IllegalArgumentException

Construct a HeapRecordId from a byte array, typically from a DatabaseEntry.

Parameters:

data - The array representing the record id.

order - The byte order of data stored in the array.

Returns:

A new HeapRecordId

Throws:

IllegalArgumentException

toArray

public byte[] toArray()

Return a byte array representing this record id.

Returns:

A byte array representing this record id.

toArray

public byte[] toArray(ByteOrder order)

Return a byte array representing this record id.

Parameters:

order - The byte order to use when constructing the array.

Returns:

A byte array representing this record id.

getPageNumber

public int getPageNumber()

Get the database page number where the record is stored.

Returns:

The database page number where the record is stored.

setPageNumber

public void setPageNumber(int pgno)

Set the database page number where the record is stored.

getIndex

public short getIndex()

Get the index in the offset table where the record can be found.

Returns:

The index in the offset table where the record can be found.

setIndex

public void setIndex(short indx)

Set the index in the offset table where the record can be found.