1 /** |
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2 * SQL-DK |
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3 * Copyright © 2013 František Kučera (frantovo.cz) |
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4 * |
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5 * This program is free software: you can redistribute it and/or modify |
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6 * it under the terms of the GNU General Public License as published by |
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7 * the Free Software Foundation, either version 3 of the License, or |
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8 * (at your option) any later version. |
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9 * |
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10 * This program is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 * GNU General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU General Public License |
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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17 */ |
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18 package info.globalcode.sql.dk.configuration; |
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19 |
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20 import java.util.ArrayList; |
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21 import javax.xml.bind.annotation.XmlTransient; |
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22 import static info.globalcode.sql.dk.Functions.findByName; |
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23 import java.util.Collections; |
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24 |
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25 /** |
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26 * <p> |
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27 * List of configurables.</p> |
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28 * |
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29 * <p> |
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30 * Can be backed by defaults – if value for given name is nof found in this instance, we will |
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31 * look into defaults. Methods also accept defaultValue parameter – is used if property is nof found |
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32 * even in default properties.</p> |
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33 * |
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34 * <p> |
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35 * Typical use: </p> |
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36 * <ul> |
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37 * <li>this instance – ad-hoc properties from CLI options</li> |
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38 * <li>default properties – from config file</li> |
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39 * <li>defaultValue – hardcoded default</li> |
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40 * </ul> |
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41 * |
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42 * @author Ing. František Kučera (frantovo.cz) |
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43 */ |
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44 public class Properties extends ArrayList<Property> implements Cloneable { |
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45 |
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46 private Properties defaults; |
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47 |
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48 public Properties() { |
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49 } |
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50 |
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51 public Properties(int initialCapacity) { |
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52 super(initialCapacity); |
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53 } |
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54 |
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55 @XmlTransient |
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56 public Properties getDefaults() { |
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57 return defaults; |
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58 } |
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59 |
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60 public void setDefaults(Properties defaults) { |
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61 this.defaults = defaults; |
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62 } |
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63 |
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64 /** |
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65 * @param defaults the last/deepest defaults |
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66 */ |
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67 public void setLastDefaults(Properties defaults) { |
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68 if (this.defaults == null) { |
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69 this.defaults = defaults; |
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70 } else { |
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71 this.defaults.setLastDefaults(defaults); |
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72 } |
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73 } |
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74 |
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75 private Property findProperty(String name) { |
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76 Property p = findByName(this, name); |
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77 if (p == null && defaults != null) { |
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78 p = defaults.findProperty(name); |
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79 } |
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80 return p; |
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81 } |
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82 |
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83 public String getString(String name, String defaultValue) { |
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84 Property p = findProperty(name); |
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85 return p == null ? defaultValue : p.getValue(); |
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86 } |
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87 |
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88 public boolean getBoolean(String name, boolean defaultValue) { |
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89 Property p = findProperty(name); |
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90 return p == null ? defaultValue : Boolean.valueOf(p.getValue()); |
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91 } |
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92 |
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93 public int getInteger(String name, int defaultValue) { |
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94 Property p = findProperty(name); |
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95 return p == null ? defaultValue : Integer.valueOf(p.getValue()); |
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96 } |
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97 |
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98 public boolean hasProperty(String name) { |
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99 return findByName(this, name) != null; |
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100 } |
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101 |
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102 @Override |
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103 public Properties clone() { |
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104 Properties clone = new Properties(size()); |
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105 Collections.copy(clone, this); |
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106 return clone; |
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107 } |
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108 |
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109 /** |
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110 * @return merged this and backing defaults as Java Properties |
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111 */ |
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112 public java.util.Properties getJavaProperties() { |
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113 java.util.Properties javaProperties = new java.util.Properties(); |
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114 duplicateTo(javaProperties); |
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115 return javaProperties; |
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116 } |
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117 |
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118 private void duplicateTo(java.util.Properties javaProperties) { |
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119 if (defaults != null) { |
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120 defaults.duplicateTo(javaProperties); |
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121 } |
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122 for (Property p : this) { |
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123 String value = p.getValue(); |
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124 if (value != null) { |
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125 javaProperties.setProperty(p.getName(), value); |
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126 } |
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127 } |
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128 } |
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129 } |
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