org.h2.index

类 VirtualTableIndex

java.lang.Object

org.h2.engine.DbObject

org.h2.schema.SchemaObject

org.h2.index.Index

org.h2.index.VirtualTableIndex

所有已实现的接口:

HasSQL

直接已知子类:

DualIndex, RangeIndex, VirtualConstructedTableIndex

public abstract class VirtualTableIndex
extends Index

An base class for indexes of virtual tables.

字段概要

从类继承的字段 org.h2.index.Index

columnIds, columns, indexColumns, indexType, table, uniqueColumnColumn

从类继承的字段 org.h2.engine.DbObject

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

从接口继承的字段 org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

构造器概要

构造器

限定符	构造器和说明
protected	VirtualTableIndex(VirtualTable table, String name, IndexColumn[] columns)

方法概要

限定符和类型	方法和说明
void	add(SessionLocal session, Row row) Add a row to the index.
void	checkRename() Check if renaming is allowed.
void	close(SessionLocal session) Close this index.
long	getRowCount(SessionLocal session) Get the row count of this table, for the given session.
long	getRowCountApproximation(SessionLocal session) Get the approximated row count for this table.
boolean	needRebuild() Check if the index needs to be rebuilt.
void	remove(SessionLocal session) Remove the index.
void	remove(SessionLocal session, Row row) Remove a row from the index.
void	truncate(SessionLocal session) Remove all rows from the index.

从类继承的方法 org.h2.index.Index

canFindNext, canGetFirstOrLast, canScan, checkIndexColumnTypes, compareRows, find, findFirstOrLast, findNext, getColumnIndex, getColumns, getCost, getCostRangeIndex, getCreateSQL, getCreateSQLForCopy, getDiskSpaceUsed, getDuplicateKeyException, getDuplicatePrimaryKeyMessage, getIndexColumns, getIndexType, getPlanSQL, getRow, getRowFactory, getTable, getType, getUniqueColumnCount, getUniqueRowFactory, isFindUsingFullTableScan, isFirstColumn, isHidden, isRowIdIndex, mayHaveNullDuplicates, removeChildrenAndResources, update

从类继承的方法 org.h2.schema.SchemaObject

getSchema, getSQL, getSQL

从类继承的方法 org.h2.engine.DbObject

getChildren, getComment, getCreateSQLForMeta, getDatabase, getDropSQL, getId, getModificationId, getName, invalidate, isTemporary, isValid, rename, setComment, setModified, setObjectName, setTemporary, toString

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.h2.util.HasSQL

getTraceSQL

构造器详细资料

VirtualTableIndex

protected VirtualTableIndex(VirtualTable table,
                            String name,
                            IndexColumn[] columns)

方法详细资料

close

public void close(SessionLocal session)

从类复制的说明: Index

Close this index.

指定者:

close 在类中 Index

参数:

session - the session used to write data

add

public void add(SessionLocal session,
                Row row)

从类复制的说明: Index

Add a row to the index.

指定者:

add 在类中 Index

参数:

session - the session to use

row - the row to add

remove

public void remove(SessionLocal session,
                   Row row)

从类复制的说明: Index

Remove a row from the index.

指定者:

remove 在类中 Index

参数:

session - the session

row - the row

remove

public void remove(SessionLocal session)

从类复制的说明: Index

Remove the index.

指定者:

remove 在类中 Index

参数:

session - the session

truncate

public void truncate(SessionLocal session)

从类复制的说明: Index

Remove all rows from the index.

指定者:

truncate 在类中 Index

参数:

session - the session

needRebuild

public boolean needRebuild()

从类复制的说明: Index

Check if the index needs to be rebuilt. This method is called after opening an index.

指定者:

needRebuild 在类中 Index

返回:

true if a rebuild is required.

checkRename

public void checkRename()

从类复制的说明: DbObject

Check if renaming is allowed. Does nothing when allowed.

覆盖:

checkRename 在类中 DbObject

getRowCount

public long getRowCount(SessionLocal session)

从类复制的说明: Index

Get the row count of this table, for the given session.

指定者:

getRowCount 在类中 Index

参数:

session - the session

返回:

the row count

getRowCountApproximation

public long getRowCountApproximation(SessionLocal session)

从类复制的说明: Index

Get the approximated row count for this table.

指定者:

getRowCountApproximation 在类中 Index

参数:

session - the session

返回:

the approximated row count