Mercurial > dive4elements > gnv-client

annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/base/DefaultResultDescriptor.java @ 271:8aad9d098b08

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Integrated Patch of issue57 to get some Memoryusage-improvements geo-backend/trunk@248 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Tue, 20 Oct 2009 09:57:52 +0000
parents b02310d7ffee
children 4a874c664123
rev   line source
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5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
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1 /**
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2 *
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3 */
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4 package de.intevation.gnv.geobackend.base;
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5
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6 import java.util.ArrayList;
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7 import java.util.HashMap;
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8 import java.util.List;
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9 import java.util.Map;
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10
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11 /**
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12 * This Class is the DefaultImplementation of the
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13 * Interface ResultDescriptor
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14 * @author Tim Englich <tim.englich@intevation.de>
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15 *
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16 */
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17 public class DefaultResultDescriptor implements ResultDescriptor {
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18
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19 /**
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20 *The Uid of this Class
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21 */
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22 private static final long serialVersionUID = 7016889733270716130L;
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23
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24 /**
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25 * The Names of the Columns of one Result
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26 */
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27 private List<String> columnNames = new ArrayList<String>();
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28
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29 /**
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30 * The Name of the Classes of the Values of one Result.
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31 */
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32 private List<String> columnClassNames = new ArrayList<String>();
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33
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34 /**
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35 *
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36 */
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37 private Map<String, Integer> columnIndexLookup = new HashMap<String, Integer>();
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38
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39 /**
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40 * Constructor
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41 */
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42 public DefaultResultDescriptor() {
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43 super();
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44 }
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45
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46 /**
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47 * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnClassName(int)
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48 */
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49 public String getColumnClassName(int column) {
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50 return this.columnClassNames.get(column);
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51 }
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52
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53 /**
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54 * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnCount()
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55 */
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56 public int getColumnCount() {
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57 return this.columnClassNames.size();
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58 }
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59
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60 /**
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61 * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnName(int)
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62 */
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63 public String getColumnName(int column) {
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64 return this.columnNames.get(column);
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65 }
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66
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67 /**
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68 * @see de.intevation.gnv.geobackend.base.ResultDescriptor#addColumn(java.lang.String, java.lang.String)
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69 */
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70 public void addColumn(String name, String className) {
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71 this.columnClassNames.add(className);
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72 this.columnNames.add(name);
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73 this.columnIndexLookup.put(name,this.columnNames.size()-1);
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74 }
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75
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76 /**
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77 * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnIndices(java.lang.String[])
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78 */
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79 public int [] getColumnIndices(String [] columnNames) {
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80 if (columnNames == null) {
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81 return null;
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82 }
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83
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84 int [] indices = new int[columnNames.length];
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85
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86 for (int i = 0; i < indices.length; ++i) {
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87 indices[i] = this.getColumnIndex(columnNames[i]);
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88 }
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89
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90 return indices;
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91 }
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92
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93 /**
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94 * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnIndex(java.lang.String)
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95 */
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96 public int getColumnIndex(String columnName) {
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97
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98 Integer value = this.columnIndexLookup.get(columnName);
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99 if (value != null){
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100 return value.intValue();
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101 }
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102 return -1;
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103 }
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104 }
http://dive4elements.wald.intevation.org