Package org.h2.mvstore.db

Class MVIndex<K,V>

java.lang.Object

org.h2.engine.DbObject

org.h2.schema.SchemaObject

org.h2.index.Index

org.h2.mvstore.db.MVIndex<K,V>

All Implemented Interfaces:

HasSQL

Direct Known Subclasses:

MVDelegateIndex, MVPrimaryIndex, MVSecondaryIndex, MVSpatialIndex

public abstract class MVIndex<K,V>
extends Index

An index that stores the data in an MVStore.

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

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MVIndex(Table newTable, int id, String name, IndexColumn[] newIndexColumns, int uniqueColumnCount, IndexType newIndexType)

Method Summary

Modifier and Type	Method	Description
abstract void	addBufferedRows(List<String> bufferNames)	Add all the index data from the buffers to the index.
abstract void	addRowsToBuffer(List<Row> rows, String bufferName)	Add the rows to a temporary storage (not to the index yet).
long	getDiskSpaceUsed(boolean approximate)	Get the used disk space for this index.
abstract MVMap<K,VersionedValue<V>>	getMVMap()

Methods inherited from class org.h2.index.Index

add, canFindNext, canGetFirstOrLast, canScan, checkIndexColumnTypes, close, compareRows, find, findFirstOrLast, findNext, getColumnIndex, getColumns, getCost, getCostRangeIndex, getCreateSQL, getCreateSQLForCopy, getDuplicateKeyException, getDuplicatePrimaryKeyMessage, getIndexColumns, getIndexType, getPlanSQL, getRow, getRowCount, getRowCountApproximation, getRowFactory, getTable, getType, getUniqueColumnCount, getUniqueRowFactory, isFindUsingFullTableScan, isFirstColumn, isRowIdIndex, needRebuild, needsUniqueCheck, remove, remove, removeChildrenAndResources, truncate, update

Methods inherited from class org.h2.schema.SchemaObject

getSchema, getSQL, getSQL

Methods inherited from class org.h2.engine.DbObject

checkRename, 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

Constructor Details

MVIndex

protected MVIndex(Table newTable,
 int id,
 String name,
 IndexColumn[] newIndexColumns,
 int uniqueColumnCount,
 IndexType newIndexType)

Method Details

addRowsToBuffer

public abstract void addRowsToBuffer(List<Row> rows,
 String bufferName)

Add the rows to a temporary storage (not to the index yet). The rows are sorted by the index columns. This is to more quickly build the index.

Parameters:

rows - the rows

bufferName - the name of the temporary storage

addBufferedRows

public abstract void addBufferedRows(List<String> bufferNames)

Add all the index data from the buffers to the index. The index will typically use merge sort to add the data more quickly in sorted order.

Parameters:

bufferNames - the names of the temporary storage

getMVMap

public abstract MVMap<K,VersionedValue<V>> getMVMap()

getDiskSpaceUsed

public long getDiskSpaceUsed(boolean approximate)

Description copied from class: Index

Get the used disk space for this index.

Overrides:

getDiskSpaceUsed in class Index

Parameters:

approximate - true to return quick approximation

Returns:

the estimated number of bytes