01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18: package org.apache.tools.ant.types;
19:
20: import java.util.Iterator;
21:
22: /**
23: * Interface describing a collection of Resources.
24: * @since Ant 1.7
25: */
26: public interface ResourceCollection {
27:
28: /**
29: * Get an Iterator over the contents of this ResourceCollection, whose elements
30: * are <code>org.apache.tools.ant.types.Resource</code> instances.
31: * @return an Iterator of Resources.
32: */
33: Iterator iterator();
34:
35: /**
36: * Learn the number of contained Resources.
37: * @return number of elements as int.
38: */
39: int size();
40:
41: /**
42: * Indicate whether this ResourceCollection is composed entirely of
43: * Resources accessible via local filesystem conventions. If true,
44: * all Resources returned from this ResourceCollection should be
45: * instances of FileResource.
46: * @return whether this is a filesystem-only resource collection.
47: */
48: boolean isFilesystemOnly();
49:
50: }
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