1 /* ***************************************************************************
2 * Copyright (c) 2012 Brabenetz Harald, Austria.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 *****************************************************************************/
17
18 package org.settings4j.settings.position;
19
20 import java.util.List;
21
22 import org.settings4j.Connector;
23 import org.settings4j.ConnectorPosition;
24
25
26 /**
27 * Iterates thought the given {@link ConnectorPosition}s and returns the first valid position from the given
28 * implementations.
29 *
30 * @author brabenetz
31 */
32 public class ConnectorPositionFirstValid implements ConnectorPosition {
33
34 private final ConnectorPosition[] connectorPositions;
35
36 /**
37 * @param connectorPosition the {@link ConnectorPosition}s to search for a valid position.
38 */
39 public ConnectorPositionFirstValid(final ConnectorPosition... connectorPosition) {
40 super();
41 connectorPositions = connectorPosition;
42 }
43
44 /** {@inheritDoc} */
45 public int getPosition(final List<Connector> connectors) {
46 for (final ConnectorPosition connectorPosition : connectorPositions) {
47 final int position = connectorPosition.getPosition(connectors);
48 if (position != UNKNOWN_POSITION) {
49 return position;
50 }
51 }
52 return UNKNOWN_POSITION;
53 }
54
55 }