_IndexDatabase


1   package com.daffodilwoods.daffodildb.server.datasystem.interfaces;
2   
3   import com.daffodilwoods.database.resource.DException;
4   import com.daffodilwoods.database.general.QualifiedIdentifier;
5   import com.daffodilwoods.daffodildb.server.datasystem.indexsystem._IndexInformation;
6   
7   /**
8    * <p>Title:_IndexDatabase</p>
9   * <p>Description: Is an interface that provides some additional operations on the
10   * database in addition to that provided by the _DataBase interface.
11   *
12   * Index Database extends Database to provide functionality over and above
13   * database for creating and deleting the temporary and permanent indexes.
14   * Indexes are maintained using BTree data structure. Indexes are dependent upon
15   * underlying database for their persistence.
16   */
17  public interface _IndexDatabase extends _Database{
18  
19    /**
20     * Used to create an temporary index on the table
21     * @param tableNameName of the Table
22     * @param indexName Name of the index
23     * @param indexInformationGetter Provides information about the index on the table
24     * @throws DException
25     */
26    public void createTemporaryIndex(QualifiedIdentifier tableName,String   indexName,
27                      _IndexInformation indexInformationGetter) throws DException;
28  
29    /**
30     * Used to create a permanent index on the table.
31     * @param tableName Name of the table
32     * @param indexName Name of the index
33     * @param indexInformationGetter Provides the information about the Index on the table
34     * @throws DException
35     */
36    public void createPermanantIndex(QualifiedIdentifier tableName,String   indexName,
37                    _IndexInformation indexInformationGetter,_DatabaseUser user) throws DException;
38  
39    /**
40     * Used to drop the index from the temporary table
41     * @param tableName Name of the table
42     * @param indexName Name of the index
43     * @throws DException
44     */
45    public void dropTemporaryIndex(QualifiedIdentifier tableName,String   indexName) throws DException;
46  
47    /**
48     * Used to drop the index from the permanent table
49     * @param tableName Name of the table
50     * @param indexName Name of the index
51     * @throws DException
52     */
53    public void dropPeramanantIndex(QualifiedIdentifier tableName,String   indexName,_DatabaseUser user) throws DException;
54  
55  
56     void alterTable(QualifiedIdentifier tableName,Object   columnInfo, _AlterRecord alterRecord,Object   defaultValue,_DatabaseUser user) throws DException ;
57  
58     void createFullTextIndex(QualifiedIdentifier tableName,String   indexName,String  [] columnName)throws DException;
59     void dropFullTextIndex(QualifiedIdentifier tableName,String   indexName) throws DException;
60     _Table getTable(QualifiedIdentifier tableName,_IndexInformation[] iinf) throws DException;
61  }
62
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