org.axiondb.engine.indexes

Class BaseBTreeIndex

java.lang.Object

org.axiondb.event.BaseTableModificationListener

org.axiondb.engine.indexes.BaseIndex

org.axiondb.engine.indexes.BaseBTreeIndex

All Implemented Interfaces:

TableModificationListener, Index

Direct Known Subclasses:

IntBTreeIndex, ObjectBTreeIndex

public abstract class BaseBTreeIndex
extends BaseIndex
implements Index

Abstract base implementation for B-Tree based indices.

Version:

$Revision: 1.6 $ $Date: 2005/03/12 02:10:41 $

Field Summary

Fields inherited from interface org.axiondb.Index

ARRAY, BTREE, DEFAULT, TTREE

Constructor Summary

Constructors

Constructor and Description
BaseBTreeIndex(java.lang.String name, Column column, boolean unique)

Method Summary

Modifier and Type	Method and Description
java.lang.String	getType() Returns my type.
void	save(java.io.File dataDirectory)
void	saveAfterTruncate(java.io.File dataDirectory)
boolean	supportsFunction(Function fn) Returns true iff #getRowIterator(org.axiondb.RowSource,org.axiondb.ComparisonOperator,java.lang.Object) can support the given operator, false otherwise.

Methods inherited from class org.axiondb.engine.indexes.BaseIndex

getComparator, getDataType, getIndexedColumn, getIndexLoader, getInorderRowIterator, getName, getRowIterator, isUnique, truncate

Methods inherited from class org.axiondb.event.BaseTableModificationListener

columnAdded, constraintAdded, constraintRemoved, rowDeleted, rowInserted, rowUpdated

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axiondb.Index

changeRowId, getIndexedColumn, getIndexLoader, getInorderRowIterator, getName, getRowIterator, isUnique, truncate

Methods inherited from interface org.axiondb.event.TableModificationListener

columnAdded, constraintAdded, constraintRemoved, rowDeleted, rowInserted, rowUpdated

Constructor Detail

BaseBTreeIndex

public BaseBTreeIndex(java.lang.String name,
                      Column column,
                      boolean unique)

Method Detail

getType

public java.lang.String getType()

Description copied from interface: Index

Returns my type.

Specified by:

getType in interface Index

save

public void save(java.io.File dataDirectory)
          throws AxionException

Specified by:

save in interface Index

Specified by:

save in class BaseIndex

Throws:

AxionException

saveAfterTruncate

public void saveAfterTruncate(java.io.File dataDirectory)
                       throws AxionException

Specified by:

saveAfterTruncate in interface Index

Specified by:

saveAfterTruncate in class BaseIndex

Throws:

AxionException

supportsFunction

public boolean supportsFunction(Function fn)

Description copied from interface: Index

Returns true iff #getRowIterator(org.axiondb.RowSource,org.axiondb.ComparisonOperator,java.lang.Object) can support the given operator, false otherwise.

Specified by:

supportsFunction in interface Index

Specified by:

supportsFunction in class BaseIndex