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Java > Open Source Codes > org > odmg > Implementation


1 package org.odmg;
2
3
4 import org.apache.ojb.odmg.oql.EnhancedOQLQuery;
5
6
7 /**
8  * The factory interface for a particular ODMG implementation.
9  * Each ODMG implementation will have a class that implements this interface.
10  * @author David Jordan (as Java Editor of the Object Data Management Group)
11  * @version ODMG 3.0
12  */

13
14 public interface Implementation
15 {
16     /**
17      * Create a <code>Transaction</code> object and associate it with the current thread.
18      * @return The newly created <code>Transaction</code> instance.
19      * @see org.odmg.Transaction
20      */

21     public Transaction newTransaction();
22
23     /**
24      * Get the current <code>Transaction</code> for the thread.
25      * @return The current <code>Transaction</code> object or null if there is none.
26      * @see org.odmg.Transaction
27      */

28     public Transaction currentTransaction();
29
30     /**
31      * Create a new <code>Database</code> object.
32      * @return The new <code>Database</code> object.
33      * @see org.odmg.Database
34      */

35     public Database newDatabase();
36
37     /**
38      * Create a new <code>OQLQuery</code> object.
39      * @return The new <code>OQLQuery</code> object.
40      * @see org.odmg.OQLQuery
41      */

42     public EnhancedOQLQuery newOQLQuery();
43
44     /**
45      * Create a new <code>DList</code> object.
46      * @return The new <code>DList</code> object.
47      * @see org.odmg.DList
48      */

49     public DList newDList();
50
51     /**
52      * Create a new <code>DBag</code> object.
53      * @return The new <code>DBag</code> object.
54      * @see org.odmg.DBag
55      */

56     public DBag newDBag();
57
58     /**
59      * Create a new <code>DSet</code> object.
60      * @return The new <code>DSet</code> object.
61      * @see org.odmg.DSet
62      */

63     public DSet newDSet();
64
65     /**
66      * Create a new <code>DArray</code> object.
67      * @return The new <code>DArray</code> object.
68      * @see org.odmg.DArray
69      */

70     public DArray newDArray();
71
72     /**
73      * Create a new <code>DMap</code> object.
74      * @return The new <code>DMap</code> object.
75      * @see org.odmg.DMap
76      */

77     public DMap newDMap();
78
79     /**
80      * Get a <code>String</code> representation of the object's identifier.
81      * @param obj The object whose identifier is being accessed.
82      * @return The object's identifier in the form of a String
83      */

84     public String JavaDoc getObjectId(Object JavaDoc obj);
85
86     /**
87      * Get the <code>Database</code> that contains the object <code>obj</code>.
88      * @param obj The object.
89      * @return The <code>Database</code> that contains the object.
90      */

91     public Database getDatabase(Object JavaDoc obj);
92 }
93
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