1 | /*
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2 | * To change this template, choose Tools | Templates
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3 | * and open the template in the editor.
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4 | */
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5 | package gov.hhs.fha.nhinc.mpilib;
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6 |
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7 | import java.beans.XMLDecoder;
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8 | import java.beans.XMLEncoder;
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9 | import java.io.File;
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10 | import java.io.FileInputStream;
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11 | import java.io.FileNotFoundException;
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12 | import java.io.FileOutputStream;
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13 | import java.io.IOException;
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14 | import java.util.logging.Level;
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15 | import java.util.logging.Logger;
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16 | import org.apache.commons.logging.Log;
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17 | import org.apache.commons.logging.LogFactory;
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18 |
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19 | public class MpiDataSaver {
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20 | private static Log log = LogFactory.getLog(MpiDataSaver.class);
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21 | private static String filename = "mpi.xml";
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22 |
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23 |
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24 | public static void SaveMpi(Patients patientList, String file)
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25 | {
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26 | log.info("Saving " + patientList.size() + " patient(s)");
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27 |
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28 | // Create output stream.
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29 | log.info("Filename=" + file);
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30 |
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31 | FileOutputStream fos;
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32 |
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33 | try {
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34 | fos = new FileOutputStream(file);
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35 | } catch (FileNotFoundException ex) {
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36 | Logger.getLogger(MpiDataSaver.class.getName()).log(Level.SEVERE, null, ex);
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37 | throw new UnableToInitializeMpi("Error accessing mpi storage", ex);
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38 | }
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39 |
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40 | try {
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41 | // Create XML encoder.
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42 | XMLEncoder xenc = new XMLEncoder(fos);
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43 | try {
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44 | // Write object.
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45 | xenc.writeObject(patientList);
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46 | xenc.flush();
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47 | } finally {
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48 | xenc.close();
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49 | }
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50 | } finally {
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51 | try {
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52 | fos.close();
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53 | } catch (IOException ex) {
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54 | Logger.getLogger(MpiDataSaver.class.getName()).log(Level.SEVERE, null, ex);
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55 | }
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56 | }
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57 | log.info("Save complete");
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58 | }
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59 | public static void SaveMpi(Patients patientList) {
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60 | if ((patientList == null)) {
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61 | log.info("Patiet List is null");
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62 | patientList = new Patients();
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63 | }
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64 | SaveMpi(patientList, filename);
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65 |
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66 |
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67 | }
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68 |
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69 | public static Patients LoadMpi(String file)
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70 | {
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71 | log.info("Loading patients");
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72 |
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73 | Patients patientList;
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74 | File f;
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75 |
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76 | // Create input stream.
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77 | log.info("Filename=" + file);
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78 | log.info("user.dir: " + System.getProperty("user.dir"));
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79 |
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80 | f = new File(file);
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81 |
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82 |
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83 | if (!f.exists()) {
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84 | //file does not exist, so create it
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85 | //i would like to replace this with ability to create a default mpi
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86 | //for testing purposes
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87 | try
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88 | {
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89 | f.createNewFile();
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90 | SaveMpi(new Patients(), file);
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91 | }
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92 | catch (Exception ex)
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93 | {
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94 | throw new UnableToInitializeMpi("Error accessing mpi storage", ex);
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95 | }
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96 |
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97 | }
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98 |
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99 | FileInputStream fis;
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100 | try {
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101 | fis = new FileInputStream(file);
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102 | } catch (FileNotFoundException ex) {
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103 | Logger.getLogger(MpiDataSaver.class.getName()).log(Level.SEVERE, null, ex);
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104 | throw new UnableToInitializeMpi("Error accessing mpi storage", ex);
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105 | }
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106 | try {
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107 | // Create XML decode.
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108 | XMLDecoder xdec = new XMLDecoder(fis);
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109 | try {
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110 | // Write object.
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111 | log.info("Loading object");
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112 | Object o = xdec.readObject();
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113 | log.info("casting object to 'patients'");
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114 | patientList = (Patients) o;
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115 | } finally {
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116 | xdec.close();
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117 | }
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118 | } finally {
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119 | try {
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120 | fis.close();
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121 | } catch (IOException ex) {
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122 | Logger.getLogger(MpiDataSaver.class.getName()).log(Level.SEVERE, null, ex);
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123 | }
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124 | }
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125 |
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126 | log.info("Loaded " + patientList.size() + " patient(s)");
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127 | return patientList;
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128 | }
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129 | public static Patients LoadMpi() {
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130 | return LoadMpi(filename);
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131 | }
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132 | }
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