Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/exports/Export.java @ 779:b1f5f2a8840f

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Ordered imports. Removed needless imports. Removed empty headers. gnv-artifacts/trunk@854 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 29 Mar 2010 08:51:20 +0000
parents 9a828e5a2390
children d0967fdee36f
rev   line source
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1 package de.intevation.gnv.exports;
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2
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3 import de.intevation.gnv.geobackend.base.Result;
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5 import de.intevation.gnv.state.exception.StateException;
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6
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7 import java.io.IOException;
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8 import java.io.OutputStream;
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9 import java.io.UnsupportedEncodingException;
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10
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11 import java.util.Collection;
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12
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13 /**
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14 * This interface should be implemented by a class whose instances are intended
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15 * to export a <code>Collection</code> of <code>Result</code>s into a specific
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16 * format (e.g. CSV or ODV).
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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 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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20 */
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21 public interface Export {
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22
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23 /**
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24 * This interface provides some methods which describe the format used by an
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25 * <code>Export</code>.
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26 */
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27 public interface Profile {
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28 String toString(int column, String value);
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29
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30 /**
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31 * This method serves information about the character used to separate
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32 * columns.
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33 *
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34 * @return Character used to separate
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35 */
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36 char getSeparator();
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37
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38 /**
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39 * This method serves information about the character used as escape
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40 * character.
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41 *
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42 * @return Escape character
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43 */
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44 char getEscapeCharacter();
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45
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46 /**
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47 * This method serves informatin about the character used as quote
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48 * character.
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49 *
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50 * @return Quote character
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51 */
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52 char getQuoteCharacter();
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53
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54 /**
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55 * This method serves information about the format.
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56 *
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57 * @return Format as string.
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58 */
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59 String getType();
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60
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61 /**
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62 * This method serves information about the encoding to be used.
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63 *
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64 * @return Encoding
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65 */
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66 String getEncoding();
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67
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68 /**
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69 * This method returns the header as array.
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70 *
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71 * @return Header as string array.
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72 */
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73 String [] getHeader();
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74 }
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75
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76 /**
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77 * This interface should be implemeted to collect the required data from
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78 * <code>Result</code> object.
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79 */
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80 public interface DataCollector {
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81
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82 /**
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83 * This method serves the required data stored in a <code>Result</code>
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84 * object.
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85 *
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86 * @return String[] which contains all required data.
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87 *
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88 * @throws StateException
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89 */
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90 String[] getData(Result result)
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91 throws StateException;
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92 }
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93
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94 /**
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95 * This method creates an export document specified by {@link Profile} which
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96 * contains the data stored in <code>result</code> and writes it to
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97 * <code>outputStream</code>.
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98 *
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99 * @param profile Profile used to specify the format of the resulting export
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100 * document.
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101 * @param outputStream Resulting export document is written to this
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102 * OutputStream.
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103 * @param result Collection which contains the data used to be written into
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104 * the export document.
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105 *
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106 * @throws IOException if an error occured while writing the export document
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107 * to OutputStream
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108 * @throws UnsupportedEncodingException if the given encoding is not
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109 * accepted
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110 * @throws StateException if <code>result</code> is null
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111 */
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112 public void create(
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113 Profile profile,
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114 OutputStream outputStream,
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115 Collection result
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116 )
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117 throws IOException, UnsupportedEncodingException, StateException;
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118
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119 }
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120 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org