org.h2.store
Class LobStorage

java.lang.Object
  org.h2.store.LobStorage

public class LobStorage
extends java.lang.Object

This class stores LOB objects in the database.

Nested Class Summary

static class

LobStorage.LobInputStream An input stream that reads from a LOB.

Field Summary

static int

TABLE_ID_SESSION_VARIABLE The 'table id' to use for session variables.

Constructor Summary

LobStorage(java.sql.Connection newConn)

Method Summary

long	addLob(java.io.InputStream in, long maxLength, int table) Store the LOB in the database.
static ValueLob	createBlob(java.io.InputStream in, long maxLength, DataHandler handler) Create a BLOB object.
static ValueLob	createClob(java.io.Reader reader, long maxLength, DataHandler handler) Create a CLOB object.
static ValueLob	createSmallLob(int type, byte[] small) Create a LOB object that fits in memory.
static void	removeAllForTable(DataHandler handler, int tableId) Remove all LOBs for this table.

Methods inherited from class java.lang.Object

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

Field Detail

TABLE_ID_SESSION_VARIABLE

public static final int TABLE_ID_SESSION_VARIABLE

The 'table id' to use for session variables.

See Also:

Constant Field Values

Constructor Detail

LobStorage

public LobStorage(java.sql.Connection newConn)

Method Detail

removeAllForTable

public static void removeAllForTable(DataHandler handler,
                                     int tableId)

Remove all LOBs for this table.

Parameters:

handler - the data handler

tableId - the table id

createSmallLob

public static ValueLob createSmallLob(int type,
                                      byte[] small)

Create a LOB object that fits in memory.

Parameters:

type - the value type

small - the byte array

Returns:

the LOB

createBlob

public static ValueLob createBlob(java.io.InputStream in,
                                  long maxLength,
                                  DataHandler handler)

Create a BLOB object.

Parameters:

in - the input stream

maxLength - the maximum length (-1 if not known)

handler - the data handler

Returns:

the LOB

createClob

public static ValueLob createClob(java.io.Reader reader,
                                  long maxLength,
                                  DataHandler handler)

Create a CLOB object.

Parameters:

reader - the reader

maxLength - the maximum length (-1 if not known)

handler - the data handler

Returns:

the LOB

addLob

public long addLob(java.io.InputStream in,
                   long maxLength,
                   int table)

Store the LOB in the database.

Parameters:

in - the input stream

maxLength - the maximum length (-1 for unknown)

table - the table

Returns:

the LOB id