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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/Id.java @ 106:ece0fdb07975

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Implementations to initialize and retrieve states. artifacts/trunk@1291 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 04 Feb 2011 10:50:53 +0000
parents 933bbc9fc11f
children
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.artifactdatabase;
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10
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11 import java.util.List;
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12
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13 /**
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14 * Class to model the concept of an 'id' in terms of unique integer as
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15 * used in databases. Subclasses of this class are able to be processed
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16 * by this id.
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17 *
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18 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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19 */
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20 public class Id
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21 {
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22 /**
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23 * Interface to filter a list of ids.
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24 */
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25 public interface Filter {
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26 /**
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27 * A list of ids is processed in a functional way to be
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28 * free from some ids by the implementing code. The resulting
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29 * list maybe short or equal sized to the original one. The
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30 * original list is not modified.
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31 * @param ids The list of input ids.
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32 * @return A list of processed ids.
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33 */
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34 List filterIds(List ids);
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35 }
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36
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37 /**
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38 * The backing int of the id.
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39 */
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40 protected int id;
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41
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42 /**
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43 * Default constructor: id = 0
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44 */
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45 public Id() {
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46 }
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47
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48 /**
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49 * Constructor to create an id with a given value.
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50 * @param id The id value
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51 */
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52 public Id(int id) {
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53 this.id = id;
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54 }
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55
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56 /**
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57 * Returns the id value.
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58 * @return The value of the id.
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59 */
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60 public int getId() {
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61 return id;
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62 }
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63 }
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64 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org