H2 Database Engine 2.3.232 · org.h2.store.DataHandler

Method Summary

Modifier and Type	Method and Description
public void	checkPowerOff() Check if the simulated power failure occurred.
public void	checkWritingAllowed() Check if writing is allowed.
public CompareMode	Returns: Compare mode. getCompareMode() Return compare mode.
public String	Returns: the database path getDatabasePath() Get the database path.
public SmallLRUCache<String, String[]>	Returns: the cache or null getLobFileListCache() Get the lob file list cache if it is used.
public LobStorageInterface	Returns: the lob storage mechanism getLobStorage() Get the lob storage mechanism to use.
public Object	Returns: the synchronization object getLobSyncObject() Get the synchronization object for lob operations.
public int	Returns: the maximum size getMaxLengthInplaceLob() Get the maximum length of a in-place large object
public TempFileDeleter	Returns: the temp file deleter getTempFileDeleter() Get the temp file deleter mechanism.
public FileStore	Returns: the file openFile(String the file name name, String the mode mode, boolean whether the file must already exist mustExist) Open a file at the given location.
public int	Returns: the number of bytes read readLob(long the lob id lobId, byte[] the message authentication code hmac, long the offset within the lob offset, byte[] the target buffer buff, int the offset within the target buffer off, int the number of bytes to read length) Read from a lob.

Method Detail

checkPowerOff	back to summary
public void checkPowerOff() throws DbException Check if the simulated power failure occurred. This call will decrement the countdown. Exceptions DbException: if the simulated power failure occurred

checkPowerOff

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public void checkPowerOff() throws DbException

Check if the simulated power failure occurred. This call will decrement the countdown.

Exceptions

DbException:: if the simulated power failure occurred

checkWritingAllowed	back to summary
public void checkWritingAllowed() throws DbException Check if writing is allowed. Exceptions DbException: if it is not allowed

checkWritingAllowed

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public void checkWritingAllowed() throws DbException

Check if writing is allowed.

Exceptions

DbException:: if it is not allowed

getCompareMode	back to summary
public CompareMode getCompareMode() Return compare mode. Returns:CompareMode Compare mode.

getCompareMode

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public CompareMode getCompareMode()

Return compare mode.

Returns:CompareMode: Compare mode.

getDatabasePath	back to summary
public String getDatabasePath() Get the database path. Returns:String the database path

getDatabasePath

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public String getDatabasePath()

Get the database path.

Returns:String: the database path

getLobFileListCache	back to summary
public SmallLRUCache<String, String[]> getLobFileListCache() Get the lob file list cache if it is used. Returns:SmallLRUCache<String, String[]> the cache or null

getLobFileListCache

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public SmallLRUCache<String, String[]> getLobFileListCache()

Get the lob file list cache if it is used.

Returns:SmallLRUCache<String, String[]>: the cache or null

getLobStorage	back to summary
public LobStorageInterface getLobStorage() Get the lob storage mechanism to use. Returns:LobStorageInterface the lob storage mechanism

getLobStorage

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public LobStorageInterface getLobStorage()

Get the lob storage mechanism to use.

Returns:LobStorageInterface: the lob storage mechanism

getLobSyncObject	back to summary
public Object getLobSyncObject() Get the synchronization object for lob operations. Returns:Object the synchronization object

getLobSyncObject

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public Object getLobSyncObject()

Get the synchronization object for lob operations.

Returns:Object: the synchronization object

getMaxLengthInplaceLob	back to summary
public int getMaxLengthInplaceLob() Get the maximum length of a in-place large object Returns:int the maximum size

getMaxLengthInplaceLob

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public int getMaxLengthInplaceLob()

Get the maximum length of a in-place large object

Returns:int: the maximum size

getTempFileDeleter	back to summary
public TempFileDeleter getTempFileDeleter() Get the temp file deleter mechanism. Returns:TempFileDeleter the temp file deleter

getTempFileDeleter

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public TempFileDeleter getTempFileDeleter()

Get the temp file deleter mechanism.

Returns:TempFileDeleter: the temp file deleter

openFile	back to summary
public FileStore openFile(String name, String mode, boolean mustExist) Open a file at the given location. Parameters name:String the file name mode:String the mode mustExist:boolean whether the file must already exist Returns:FileStore the file

openFile

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public FileStore openFile(String name, String mode, boolean mustExist)

Open a file at the given location.

Parameters

name:String: the file name
mode:String: the mode
mustExist:boolean: whether the file must already exist

Returns:FileStore

the file

readLob	back to summary
public int readLob(long lobId, byte[] hmac, long offset, byte[] buff, int off, int length) Read from a lob. Parameters lobId:long the lob id hmac:byte[] the message authentication code offset:long the offset within the lob buff:byte[] the target buffer off:int the offset within the target buffer length:int the number of bytes to read Returns:int the number of bytes read

readLob

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public int readLob(long lobId, byte[] hmac, long offset, byte[] buff, int off, int length)

Read from a lob.

Parameters

lobId:long: the lob id
hmac:byte[]: the message authentication code
offset:long: the offset within the lob
buff:byte[]: the target buffer
off:int: the offset within the target buffer
length:int: the number of bytes to read

Returns:int

the number of bytes read

public Interface DataHandler

Method Summary

Method Detail