Mercurial > lada > lada-server

annotate src/main/java/de/intevation/lada/data/Repository.java @ 86:d408eaa7c11b

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Added success attribute which indicates that the operation on the repository was successfull.
author Torsten Irländer <torsten.irlaender@intevation.de>
date Fri, 07 Jun 2013 15:17:18 +0200
parents 7b932d54719c
children 36b2191c3fcb
rev   line source
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1 package de.intevation.lada.data;
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2
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3 import java.util.List;
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4 import java.util.Map;
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5
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6 import javax.enterprise.context.ApplicationScoped;
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7 import javax.inject.Inject;
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8 import javax.persistence.EntityManager;
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9 import javax.persistence.criteria.CriteriaBuilder;
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10 import javax.persistence.criteria.CriteriaQuery;
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11 import javax.persistence.criteria.Root;
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12 import javax.inject.Named;
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13
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14 /**
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15 * This generic Container is an interface to request and select Data
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16 * obejcts from the connected database.
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17 *
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18 * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a>
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19 */
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20 @Named
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21 @ApplicationScoped
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22 public class Repository
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23 {
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24 /**
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25 * The entitymanager managing the data.
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26 */
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27 @Inject
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28 private EntityManager em;
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29
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30 /**
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31 * Errors/Warnings occured in repository operations.
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32 */
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33 private boolean success;
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34 private int generalError;
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35 private Map<String, Integer> errors;
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36 private Map<String, Integer> warnings;
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37
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38 /**
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39 * Get all objects of type <link>clazz</link>from database.
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40 *
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41 * @param clazz The class type.
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42 * @return List of objects.
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43 */
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44 public <T> List<T> findAll(Class<T> clazz) {
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45 CriteriaBuilder builder = em.getCriteriaBuilder();
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46 CriteriaQuery<T> criteria = builder.createQuery(clazz);
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47 Root<T> member = criteria.from(clazz);
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48 criteria.select(member);
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49 return em.createQuery(criteria).getResultList();
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50 }
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51
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52 /**
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53 * Find a single object identified by its id.
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54 *
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55 * @param clazz The class type.
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56 * @param id The object id.
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57 * @return The requested object of type clazz
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58 */
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59 public <T> T findById(Class<T> clazz, String id) {
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60 T item = em.find(clazz, id);
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61 if (item == null) {
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62 this.setGeneralError(600);
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63 }
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64 return item;
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65 }
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67 /**
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68 * Getter for the success boolean which indicates whether the request
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69 * succeeds.
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70 *
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71 * @return The true or false.
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72 */
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73 public boolean getSuccess() {
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74 return this.success;
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75 }
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76
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77 /**
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78 * Protected setter for the success boolean which indicates whether the
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79 * request succeeds.
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80 *
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81 */
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82 public void setSuccess(boolean success) {
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83 this.success = success;
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84 }
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85
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86 /**
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87 * Getter for the error code returned by the validator.
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88 *
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89 * @return The error code returned by the validator.
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90 */
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91 public int getGeneralError() {
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92 return generalError;
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93 }
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94
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95 /**
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96 * Protected setter for the general error code.
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97 *
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98 * @param generalError
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99 */
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100 protected void setGeneralError(int generalError) {
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101 this.generalError = generalError;
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102 }
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103
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104 /**
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105 * Getter for all errors occured while validating a LProbe object.
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106 *
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107 * @return Map of field - error code pairs.
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108 */
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109 public Map<String, Integer> getErrors() {
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110 return errors;
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111 }
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112
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113 /**
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114 * Protected setter for validation errors.
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115 *
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116 * @param errors
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117 */
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118 protected void setErrors(Map<String, Integer> errors) {
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119 this.errors = errors;
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120 }
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121
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122 /**
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123 * Getter for all warnings occured while validating a LProbe object.
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124 *
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125 * @return Map of field - error code pairs.
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126 */
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127 public Map<String, Integer> getWarnings() {
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128 return warnings;
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129 }
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130
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131 /**
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132 * Protected setter for validation warnings.
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133 *
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134 * @param warnings
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135 */
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136 protected void setWarnings(Map<String, Integer> warnings) {
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137 this.warnings = warnings;
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138 }
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13178bbe77ff New generic repository for data requests.
Raimund Renkert <rrenkert@intevation.de>
parents:
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