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.lenya.cms.metadata;
19:
20: /**
21: * Definition of a set of meta data elements.
22: */
23: public interface ElementSet {
24:
25: /**
26: * @return The supported elements.
27: */
28: Element[] getElements();
29:
30: /**
31: * @param name The name.
32: * @return The element.
33: * @throws MetaDataException if the element with this name does not exist.
34: */
35: Element getElement(String name) throws MetaDataException;
36:
37: /**
38: * @return The namespace URI of this element set.
39: */
40: String getNamespaceUri();
41:
42: /**
43: * Checks if an element with a certain name is contained.
44: * @param name The name.
45: * @return A boolean value.
46: */
47: boolean containsElement(String name);
48:
49: }
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