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java.lang.Objectorg.h2.store.LobStorage
public class LobStorage
This class stores LOB objects in the database.
Nested Class Summary | |
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class |
LobStorage.LobInputStream
An input stream that reads from a LOB. |
class |
LobStorage.RemoteInputStream
An input stream that reads from a remote LOB. |
Field Summary | |
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static java.lang.String |
LOB_DATA_TABLE
The name of the lob data table. |
static int |
TABLE_ID_SESSION_VARIABLE
The table id for session variables (LOBs not assigned to a table). |
static int |
TABLE_TEMP
The table id for temporary objects (not assigned to any object). |
Constructor Summary | |
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LobStorage(DataHandler handler)
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Method Summary | |
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ValueLobDb |
copyLob(int type,
long oldLobId,
int tableId,
long length)
Copy a lob. |
Value |
createBlob(java.io.InputStream in,
long maxLength)
Create a BLOB object. |
Value |
createClob(java.io.Reader reader,
long maxLength)
Create a CLOB object. |
static Value |
createSmallLob(int type,
byte[] small)
Create a LOB object that fits in memory. |
java.io.InputStream |
getInputStream(long lobId,
long byteCount)
Get the input stream for the given lob. |
void |
init()
Initialize the lob storage. |
void |
removeAllForTable(int tableId)
Remove all LOBs for this table. |
void |
removeLob(long lob)
Delete a LOB from the database. |
void |
setTable(long lobId,
int table)
Set the table reference of this lob. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final int TABLE_ID_SESSION_VARIABLE
public static final int TABLE_TEMP
public static final java.lang.String LOB_DATA_TABLE
Constructor Detail |
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public LobStorage(DataHandler handler)
Method Detail |
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public void init()
public void removeAllForTable(int tableId)
tableId
- the table idpublic static Value createSmallLob(int type, byte[] small)
type
- the value typesmall
- the byte array
public void removeLob(long lob)
lob
- the lob idpublic java.io.InputStream getInputStream(long lobId, long byteCount) throws java.io.IOException
lobId
- the lob idbyteCount
- the number of bytes to read, or -1 if not known
java.io.IOException
public ValueLobDb copyLob(int type, long oldLobId, int tableId, long length)
type
- the typeoldLobId
- the old lob idtableId
- the new table idlength
- the length
public Value createBlob(java.io.InputStream in, long maxLength)
in
- the input streammaxLength
- the maximum length (-1 if not known)
public Value createClob(java.io.Reader reader, long maxLength)
reader
- the readermaxLength
- the maximum length (-1 if not known)
public void setTable(long lobId, int table)
lobId
- the lobtable
- the table
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