org.h2.mvstore.db

Class MVTable

java.lang.Object

org.h2.engine.DbObjectBase

org.h2.schema.SchemaObjectBase

org.h2.table.Table

org.h2.table.TableBase

org.h2.table.RegularTable

org.h2.mvstore.db.MVTable

All Implemented Interfaces:

DbObject, SchemaObject

public class MVTable
extends RegularTable

A table stored in a MVStore.

Field Summary

Fields

Modifier and Type	Field and Description
static DebuggingThreadLocal<java.util.ArrayList<java.lang.String>>	EXCLUSIVE_LOCKS The table names this thread has exclusively locked.
static DebuggingThreadLocal<java.util.ArrayList<java.lang.String>>	SHARED_LOCKS The tables names this thread has a shared lock on.
static DebuggingThreadLocal<java.lang.String>	WAITING_FOR_LOCK The table name this thread is waiting to lock.

Fields inherited from class org.h2.table.RegularTable

containsLargeObject, lockExclusiveSession, lockSharedSessions

Fields inherited from class org.h2.table.Table

columns, compareMode, isHidden, TYPE_CACHED, TYPE_MEMORY

Fields inherited from class org.h2.engine.DbObjectBase

comment, database, trace

Fields inherited from interface org.h2.engine.DbObject

AGGREGATE, COMMENT, CONSTANT, CONSTRAINT, DOMAIN, FUNCTION_ALIAS, INDEX, RIGHT, ROLE, SCHEMA, SEQUENCE, SETTING, SYNONYM, TABLE_OR_VIEW, TRIGGER, USER

Constructor Summary

Constructors

Constructor and Description
MVTable(CreateTableData data, MVTableEngine.Store store)

Method Summary

Methods

Modifier and Type	Method and Description
Index	addIndex(Session session, java.lang.String indexName, int indexId, IndexColumn[] cols, IndexType indexType, boolean create, java.lang.String indexComment) Create an index for this table
void	addRow(Session session, Row row) Add a row to the table and all indexes.
void	close(Session session) Close the table object and flush changes.
void	commit() Mark the transaction as committed, so that the modification counter of the database is incremented.
long	getDiskSpaceUsed()
java.util.ArrayList<Index>	getIndexes() Get all indexes for this table.
java.lang.String	getMapName()
long	getMaxDataModificationId() Get the last data modification id.
Row	getRow(Session session, long key) Get the given row.
long	getRowCount(Session session) Get the row count for this table.
long	getRowCountApproximation() Get the approximated row count for this table.
Index	getScanIndex(Session session) Get the scan index to iterate through all rows.
Index	getUniqueIndex() Get any unique index for this table if one exists.
boolean	isMVStore()
boolean	lock(Session session, boolean exclusive, boolean forceLockEvenInMvcc) Lock the table for the given session.
Row	lockRow(Session session, Row row) Locks row, preventing any updated to it, except from the session specified.
void	removeChildrenAndResources(Session session) Remove all dependent objects and free all resources (files, blocks in files) of this object.
void	removeRow(Session session, Row row) Remove a row from the table and all indexes.
void	truncate(Session session) Remove all rows from the table and indexes.
void	unlock(Session s) Release the lock for this session.
void	updateRow(Session session, Row oldRow, Row newRow) Update a row to the table and all indexes.

Methods inherited from class org.h2.table.RegularTable

addRowsToIndex, canDrop, canGetRowCount, canTruncate, checkDeadlock, checkRename, checkSupportAlter, getContainsLargeObject, getDeadlockDetails, getRowIdColumn, getTableType, isDeterministic, isLockedExclusively, isLockedExclusivelyBy, sortRows, toString

Methods inherited from class org.h2.table.TableBase

getCreateSQL, getDropSQL, getMainIndexColumn, isGlobalTemporary

Methods inherited from class org.h2.table.Table

addConstraint, addDependencies, addDependentView, addSequence, addSynonym, addTrigger, canReference, checkWritingAllowed, compareValues, createRow, doesColumnExist, dropMultipleColumnsConstraintsAndIndexes, findPrimaryKey, fire, fireAfterRow, fireBeforeRow, fireRow, getBestPlanItem, getCheckForeignKeyConstraints, getChildren, getColumn, getColumn, getColumns, getCompareMode, getConstraints, getCreateSQLForCopy, getDefaultValue, getDependentViews, getIndex, getIndexForColumn, getOnCommitDrop, getOnCommitTruncate, getOnUpdateValue, getPrimaryKey, getScanIndex, getTemplateRow, getTemplateSimpleRow, getType, hasSelectTrigger, isHidden, isPersistData, isPersistIndexes, isQueryComparable, isTableExpression, isView, removeConstraint, removeDependentView, removeIndex, removeIndexOrTransferOwnership, removeSequence, removeSynonym, removeTrigger, rename, renameColumn, setCheckForeignKeyConstraints, setColumns, setHidden, setOnCommitDrop, setOnCommitTruncate, setTableExpression, updateRows, validateConvertUpdateSequence

Methods inherited from class org.h2.schema.SchemaObjectBase

getSchema, getSQL, getSQL

Methods inherited from class org.h2.engine.DbObjectBase

getComment, getDatabase, getId, getModificationId, getName, invalidate, isTemporary, isValid, setComment, setModified, setObjectName, setTemporary

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.h2.engine.DbObject

getComment, getDatabase, getId, getName, isTemporary, setComment, setTemporary

Field Detail

WAITING_FOR_LOCK

public static final DebuggingThreadLocal<java.lang.String> WAITING_FOR_LOCK

The table name this thread is waiting to lock.

EXCLUSIVE_LOCKS

public static final DebuggingThreadLocal<java.util.ArrayList<java.lang.String>> EXCLUSIVE_LOCKS

The table names this thread has exclusively locked.

SHARED_LOCKS

public static final DebuggingThreadLocal<java.util.ArrayList<java.lang.String>> SHARED_LOCKS

The tables names this thread has a shared lock on.

Constructor Detail

MVTable

public MVTable(CreateTableData data,
       MVTableEngine.Store store)

Method Detail

getMapName

public java.lang.String getMapName()

lock

public boolean lock(Session session,
           boolean exclusive,
           boolean forceLockEvenInMvcc)

Description copied from class: Table

Lock the table for the given session. This method waits until the lock is granted.

Specified by:

lock in class Table

Parameters:

session - the session

exclusive - true for write locks, false for read locks

forceLockEvenInMvcc - lock even in the MVCC mode

Returns:

true if the table was already exclusively locked by this session.

unlock

public void unlock(Session s)

Description copied from class: Table

Release the lock for this session.

Specified by:

unlock in class Table

Parameters:

s - the session

close

public void close(Session session)

Description copied from class: Table

Close the table object and flush changes.

Specified by:

close in class Table

Parameters:

session - the session

getRow

public Row getRow(Session session,
         long key)

Description copied from class: Table

Get the given row.

Overrides:

getRow in class Table

Parameters:

session - the session

key - the primary key

Returns:

the row

addIndex

public Index addIndex(Session session,
             java.lang.String indexName,
             int indexId,
             IndexColumn[] cols,
             IndexType indexType,
             boolean create,
             java.lang.String indexComment)

Description copied from class: Table

Create an index for this table

Specified by:

addIndex in class Table

Parameters:

session - the session

indexName - the name of the index

indexId - the id

cols - the index columns

indexType - the index type

create - whether this is a new index

indexComment - the comment

Returns:

the index

removeRow

public void removeRow(Session session,
             Row row)

Description copied from class: Table

Remove a row from the table and all indexes.

Specified by:

removeRow in class Table

Parameters:

session - the session

row - the row

truncate

public void truncate(Session session)

Description copied from class: Table

Remove all rows from the table and indexes.

Specified by:

truncate in class Table

Parameters:

session - the session

addRow

public void addRow(Session session,
          Row row)

Description copied from class: Table

Add a row to the table and all indexes.

Specified by:

addRow in class Table

Parameters:

session - the session

row - the row

updateRow

public void updateRow(Session session,
             Row oldRow,
             Row newRow)

Description copied from class: Table

Update a row to the table and all indexes.

Overrides:

updateRow in class Table

Parameters:

session - the session

oldRow - the row to update

newRow - the row with updated values (_rowid_ suppose to be the same)

lockRow

public Row lockRow(Session session,
          Row row)

Description copied from class: Table

Locks row, preventing any updated to it, except from the session specified.

Overrides:

lockRow in class Table

Parameters:

session - the session

row - to lock

Returns:

locked row, or null if row does not exist anymore

getScanIndex

public Index getScanIndex(Session session)

Description copied from class: Table

Get the scan index to iterate through all rows.

Specified by:

getScanIndex in class Table

Parameters:

session - the session

Returns:

the index

getUniqueIndex

public Index getUniqueIndex()

Description copied from class: Table

Get any unique index for this table if one exists.

Specified by:

getUniqueIndex in class Table

Returns:

a unique index

getIndexes

public java.util.ArrayList<Index> getIndexes()

Description copied from class: Table

Get all indexes for this table.

Specified by:

getIndexes in class Table

Returns:

the list of indexes

getMaxDataModificationId

public long getMaxDataModificationId()

Description copied from class: Table

Get the last data modification id.

Specified by:

getMaxDataModificationId in class Table

Returns:

the modification id

removeChildrenAndResources

public void removeChildrenAndResources(Session session)

Description copied from class: DbObjectBase

Remove all dependent objects and free all resources (files, blocks in files) of this object.

Specified by:

removeChildrenAndResources in interface DbObject

Overrides:

removeChildrenAndResources in class Table

Parameters:

session - the session

getRowCount

public long getRowCount(Session session)

Description copied from class: Table

Get the row count for this table.

Specified by:

getRowCount in class Table

Parameters:

session - the session

Returns:

the row count

getRowCountApproximation

public long getRowCountApproximation()

Description copied from class: Table

Get the approximated row count for this table.

Specified by:

getRowCountApproximation in class Table

Returns:

the approximated row count

getDiskSpaceUsed

public long getDiskSpaceUsed()

Specified by:

getDiskSpaceUsed in class Table

isMVStore

public boolean isMVStore()

Overrides:

isMVStore in class Table

commit

public void commit()

Mark the transaction as committed, so that the modification counter of the database is incremented.