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java.lang.Objectorg.h2.engine.DbObjectBase
org.h2.schema.SchemaObjectBase
org.h2.index.BaseIndex
org.h2.mvstore.db.MVDelegateIndex
public class MVDelegateIndex
An index that delegates indexing to another index.
| Field Summary |
|---|
| Fields inherited from class org.h2.index.BaseIndex |
|---|
columnIds, columns, indexColumns, indexType, isMultiVersion, table |
| Fields inherited from class org.h2.engine.DbObjectBase |
|---|
comment, database, trace |
| Fields inherited from interface org.h2.engine.DbObject |
|---|
AGGREGATE, COMMENT, CONSTANT, CONSTRAINT, FUNCTION_ALIAS, INDEX, RIGHT, ROLE, SCHEMA, SEQUENCE, SETTING, TABLE_OR_VIEW, TRIGGER, USER, USER_DATATYPE |
| Constructor Summary | |
|---|---|
MVDelegateIndex(MVTable table,
int id,
java.lang.String name,
MVPrimaryIndex mainIndex,
IndexType indexType)
|
|
| Method Summary | |
|---|---|
void |
add(Session session,
Row row)
Add a row to the index. |
void |
addBufferedRows(java.util.List<java.lang.String> bufferNames)
Add all the index data from the buffers to the index. |
void |
addRowsToBuffer(java.util.List<Row> rows,
java.lang.String bufferName)
Add the rows to a temporary storage (not to the index yet). |
boolean |
canGetFirstOrLast()
Check if the index can directly look up the lowest or highest value of a column. |
void |
checkRename()
Check if this object can be renamed. |
void |
close(Session session)
Close this index. |
Cursor |
find(Session session,
SearchRow first,
SearchRow last)
Find a row or a list of rows and create a cursor to iterate over the result. |
Cursor |
findFirstOrLast(Session session,
boolean first)
Find the first (or last) value of this index. |
int |
getColumnIndex(Column col)
Get the index of a column in the list of index columns |
double |
getCost(Session session,
int[] masks,
TableFilter filter,
SortOrder sortOrder)
Estimate the cost to search for rows given the search mask. |
long |
getDiskSpaceUsed()
Get the used disk space for this index. |
long |
getRowCount(Session session)
Get the row count of this table, for the given session. |
long |
getRowCountApproximation()
Get the approximated row count for this table. |
boolean |
needRebuild()
Check if the index needs to be rebuilt. |
void |
remove(Session session)
Remove the index. |
void |
remove(Session session,
Row row)
Remove a row from the index. |
void |
truncate(Session session)
Remove all rows from the index. |
| Methods inherited from class org.h2.index.BaseIndex |
|---|
canFindNext, canScan, checkIndexColumnTypes, commit, compareRows, containsNullAndAllowMultipleNull, find, findNext, getColumns, getCostRangeIndex, getCreateSQL, getCreateSQLForCopy, getDropSQL, getDuplicateKeyException, getIndexColumns, getIndexType, getPlanSQL, getRow, getTable, getType, initBaseIndex, isHidden, isRowIdIndex, removeChildrenAndResources, setSortedInsertMode |
| Methods inherited from class org.h2.schema.SchemaObjectBase |
|---|
getSchema, getSQL, initSchemaObjectBase |
| Methods inherited from class org.h2.engine.DbObjectBase |
|---|
getChildren, getComment, getDatabase, getId, getModificationId, getName, initDbObjectBase, invalidate, isTemporary, 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.index.Index |
|---|
canFindNext, canScan, commit, compareRows, find, findNext, getColumns, getIndexColumns, getIndexType, getPlanSQL, getRow, getTable, isRowIdIndex, setSortedInsertMode |
| Methods inherited from interface org.h2.schema.SchemaObject |
|---|
getSchema, isHidden |
| Methods inherited from interface org.h2.engine.DbObject |
|---|
getChildren, getComment, getCreateSQL, getCreateSQLForCopy, getDatabase, getDropSQL, getId, getName, getSQL, getType, isTemporary, removeChildrenAndResources, rename, setComment, setTemporary |
| Constructor Detail |
|---|
public MVDelegateIndex(MVTable table,
int id,
java.lang.String name,
MVPrimaryIndex mainIndex,
IndexType indexType)
| Method Detail |
|---|
public void addRowsToBuffer(java.util.List<Row> rows,
java.lang.String bufferName)
MVIndex
addRowsToBuffer in interface MVIndexrows - the rowsbufferName - the name of the temporary storagepublic void addBufferedRows(java.util.List<java.lang.String> bufferNames)
MVIndex
addBufferedRows in interface MVIndexbufferNames - the names of the temporary storage
public void add(Session session,
Row row)
Index
add in interface Indexsession - the session to userow - the row to addpublic boolean canGetFirstOrLast()
Index
canGetFirstOrLast in interface Indexpublic void close(Session session)
Index
close in interface Indexsession - the session used to write data
public Cursor find(Session session,
SearchRow first,
SearchRow last)
Index
find in interface Indexsession - the sessionfirst - the first row, or null for no limitlast - the last row, or null for no limit
public Cursor findFirstOrLast(Session session,
boolean first)
Index
findFirstOrLast in interface Indexsession - the sessionfirst - true if the first (lowest for ascending indexes) or last
value should be returned
public int getColumnIndex(Column col)
Index
getColumnIndex in interface IndexgetColumnIndex in class BaseIndexcol - the column
public double getCost(Session session,
int[] masks,
TableFilter filter,
SortOrder sortOrder)
Index
getCost in interface Indexsession - the sessionmasks - per-column comparison bit masks, null means 'always false',
see constants in IndexConditionfilter - the table filtersortOrder - the sort order
public boolean needRebuild()
Index
needRebuild in interface Index
public void remove(Session session,
Row row)
Index
remove in interface Indexsession - the sessionrow - the rowpublic void remove(Session session)
Index
remove in interface Indexsession - the sessionpublic void truncate(Session session)
Index
truncate in interface Indexsession - the sessionpublic void checkRename()
DbObjectBase
checkRename in interface DbObjectcheckRename in class DbObjectBasepublic long getRowCount(Session session)
Index
getRowCount in interface Indexsession - the session
public long getRowCountApproximation()
Index
getRowCountApproximation in interface Indexpublic long getDiskSpaceUsed()
Index
getDiskSpaceUsed in interface Index
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