Package org.h2.index
Class VirtualTableIndex
java.lang.Object
org.h2.engine.DbObject
org.h2.schema.SchemaObject
org.h2.index.Index
org.h2.index.VirtualTableIndex
- All Implemented Interfaces:
HasSQL
- Direct Known Subclasses:
DualIndex
,RangeIndex
,VirtualConstructedTableIndex
An base class for indexes of virtual tables.
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Field Summary
Fields inherited from class org.h2.index.Index
columnIds, columns, indexColumns, indexType, table, uniqueColumnColumn
Fields inherited from class 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
Fields inherited from interface org.h2.util.HasSQL
ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS
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Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
VirtualTableIndex
(VirtualTable table, String name, IndexColumn[] columns) -
Method Summary
Modifier and TypeMethodDescriptionvoid
add
(SessionLocal session, Row row) Add a row to the index.void
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
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.Methods inherited from class 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
Methods inherited from class org.h2.schema.SchemaObject
getSchema, getSQL, getSQL
Methods inherited from class org.h2.engine.DbObject
getChildren, getComment, getCreateSQLForMeta, getDatabase, getDropSQL, getId, getModificationId, getName, invalidate, isTemporary, isValid, rename, setComment, setModified, setObjectName, setTemporary, toString
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.h2.util.HasSQL
getTraceSQL
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Constructor Details
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VirtualTableIndex
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Method Details
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close
Description copied from class:Index
Close this index. -
add
Description copied from class:Index
Add a row to the index. -
remove
Description copied from class:Index
Remove a row from the index. -
remove
Description copied from class:Index
Remove the index. -
truncate
Description copied from class:Index
Remove all rows from the index. -
needRebuild
public boolean needRebuild()Description copied from class:Index
Check if the index needs to be rebuilt. This method is called after opening an index.- Specified by:
needRebuild
in classIndex
- Returns:
- true if a rebuild is required.
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checkRename
public void checkRename()Description copied from class:DbObject
Check if renaming is allowed. Does nothing when allowed.- Overrides:
checkRename
in classDbObject
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getRowCount
Description copied from class:Index
Get the row count of this table, for the given session.- Specified by:
getRowCount
in classIndex
- Parameters:
session
- the session- Returns:
- the row count
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getRowCountApproximation
Description copied from class:Index
Get the approximated row count for this table.- Specified by:
getRowCountApproximation
in classIndex
- Parameters:
session
- the session- Returns:
- the approximated row count
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