Method: hasNext()

1: /*
2: * *********************************************************************************************************************
3: *
4: * Mistral: open source imaging engine
5: * http://tidalwave.it/projects/mistral
6: *
7: * Copyright (C) 2003 - 2023 by Tidalwave s.a.s. (http://tidalwave.it)
8: *
9: * *********************************************************************************************************************
10: *
11: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
12: * the License. You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
17: * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations under the License.
19: *
20: * *********************************************************************************************************************
21: *
22: * git clone https://bitbucket.org/tidalwave/mistral-src
23: * git clone https://github.com/tidalwave-it/mistral-src
24: *
25: * *********************************************************************************************************************
26: */
27: package it.tidalwave.image.metadata.loader;
28:
29: import javax.annotation.Nonnull;
30: import java.util.Iterator;
31: import java.util.NoSuchElementException;
32:
33: /***********************************************************************************************************************
34: *
35: * @author Fabrizio Giudici
36: *
37: **********************************************************************************************************************/
38: public interface DirectoryLoader extends Iterator<DirectoryLoader>
39: {
40: /*******************************************************************************************************************
41: *
42: *
43: ******************************************************************************************************************/
44: @Nonnull
45: default public String[] getSubDirectoryNames()
46: {
47: return new String[0];
48: }
49:
50: /*******************************************************************************************************************
51: *
52: *
53: ******************************************************************************************************************/
54: @Nonnull
55: default public int[] getTags()
56: {
57: return new int[0];
58: }
59:
60: /*******************************************************************************************************************
61: *
62: *
63: ******************************************************************************************************************/
64: default public DirectoryLoader getSubDirectory (String name)
65: {
66: return null;
67: }
68:
69: /*******************************************************************************************************************
70: *
71: *
72: ******************************************************************************************************************/
73: default public boolean hasNext()
74: {
75: return false;
76: }
77:
78: /*******************************************************************************************************************
79: *
80: *
81: ******************************************************************************************************************/
82: @Nonnull
83: default public DirectoryLoader next()
84: {
85: throw new NoSuchElementException();
86: }
87:
88: /*******************************************************************************************************************
89: *
90: *
91: ******************************************************************************************************************/
92: @Nonnull
93: public String getTagName (int tag);
94:
95: /*******************************************************************************************************************
96: *
97: *
98: ******************************************************************************************************************/
99: public boolean containsTag (int tag);
100:
101: /*******************************************************************************************************************
102: *
103: *
104: ******************************************************************************************************************/
105: @Nonnull
106: public Object getObject (int tag)
107: throws NoSuchElementException;
108: }