TypeDatabase


1   
2   // Copyright (C) 1998-1999
3   // Object Oriented Concepts, Inc.
4   
5   // **********************************************************************
6   //
7   // Copyright (c) 1997
8   // Mark Spruiell (mark@intellisoft.com)
9   //
10  // See the COPYING file for more information
11  //
12  // **********************************************************************
13  
14  package org.jacorb.trading.db;
15  
16  import java.util.*;
17  import org.omg.CosTradingRepos.ServiceTypeRepositoryPackage.*;
18  
19  
20  /**
21   * An abstract interface to the service type database
22   */
23  public interface TypeDatabase
24  {
25    /** One of these must be supplied to the begin() method */
26    public static final int READ = 0;
27    public static final int WRITE = 1;
28  
29    /**
30     * Must precede any use of the database - may block if the
31     * requested lock is not available
32     */
33    public void begin(int mode);
34  
35    /** Must follow any use of the database */
36    public void end();
37  
38  
39    /**
40     * Returns the TypeStruct for the type, or null if the
41     * the type doesn't exist
42     */
43    public TypeStruct describeType(String   name);
44  
45    /** Returns true if the type was found, false otherwise */
46    public boolean maskType(String   name);
47  
48    /** Returns true if the type was found, false otherwise */
49    public boolean unmaskType(String   name);
50  
51    /** Returns the names of all of the service types */
52    public String  [] getTypes();
53  
54    /**
55     * Returns the names of all of the service types whose incarnation
56     * is the same or greater than the given one
57     */
58    public String  [] getTypesSince(IncarnationNumber inc);
59  
60    /**
61     * Returns the current incarnation number (the one that will be
62     * assigned to the next service type)
63     */
64    public IncarnationNumber getIncarnation();
65  
66    /** Creates a new service type */
67    public IncarnationNumber createType(
68      String   name,
69      String   interfaceName,
70      PropStruct[] props,
71      String  [] superTypes);
72  
73    /** Returns true if the type was found, false otherwise */
74    public boolean removeType(String   name);
75  
76    /**
77     * Returns the name of a subtype of the given type, or null if
78     * no subtypes were found
79     */
80    public String   findSubType(String   name);
81  
82    /**
83     * Returns the names of all supertypes of the given type,
84     * or null if the type wasn't found
85     */
86    public String  [] getAllSuperTypes(String   name);
87  }
88  
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