| org.axiondb.Index
All known Subclasses: org.axiondb.ext.indexes.ttree.MemoryTTreeIndex, org.axiondb.engine.indexes.BaseBTreeIndex, org.axiondb.engine.indexes.BaseIndex, org.axiondb.ext.indexes.ttree.TTreeIndex, org.axiondb.ext.indexes.ttree.DiskTTreeIndex, org.axiondb.engine.indexes.BaseArrayIndex,
| Index | | public interface Index extends TableModificationListener(Code) | | A database index. (Right now, this class assumes an Index over a single column.
Multipart indices will come later.)
TODO: Support expression and/or function e.g UPPER(name)
TODO: Support for Multi column index, very useful for composite keys
version:
$Revision: 1.22 $ $Date: 2005/12/20 18:32:40 $
author:
Morgan Delagrange
author:
Rodney Waldhoff
author:
Chuck Burdick
author:
Ahimanikya Satapathy |
| Method Summary | |
| void | changeRowId(Table table, Row row, int oldId, int newId)
| | IndexLoader | getIndexLoader()
| | Column | getIndexedColumn()
Returns the column I index. | | RowIterator | getInorderRowIterator(RowSource source)
| | String | getName()
Returns my name. | | RowIterator | getRowIterator(RowSource source, Function fn, Object value)
Returns a
RowIterator over the indexed rows, limited by the given
ComparisonOperator /value pair, using the default sort order. | | String | getType()
Returns my type. | | boolean | isUnique()
Whether or not I allow duplicate values. | | void | save(File dataDirectory)
| | void | saveAfterTruncate(File dataDirectory)
| | boolean | supportsFunction(Function fn)
Returns true iff
Index.getRowIterator(org.axiondb.RowSource,org.axiondb.ComparisonOperator,java.lang.Object) can support the given operator, false otherwise. | | void | truncate()
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| getIndexedColumn | | Column getIndexedColumn()(Code) | | Returns the column I index.
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| getRowIterator | | RowIterator getRowIterator(RowSource source, Function fn, Object value) throws AxionException(Code) | | Returns a
RowIterator over the indexed rows, limited by the given
ComparisonOperator /value pair, using the default sort order.
Parameters:
operator - the ComparisonOperatorto apply
Parameters:
value - the value to compare the indexed column to |
| isUnique | | boolean isUnique()(Code) | | Whether or not I allow duplicate values.
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