Mercurial > hg > digilib-old
annotate servlet/src/digilib/util/Parameter.java @ 636:7049579a0097 jquery
last and next page works now
implemented redisplay function (only tested with fullscreen)
parameters that are changed need to be in data.queryParams to get in the url on redisplay
| author | robcast |
|---|---|
| date | Tue, 18 Jan 2011 21:30:03 +0100 |
| parents | 0885f5ca5b24 |
| children |
| rev | line source |
|---|---|
| 153 | 1 /* Parameter -- General digilib parameter class. |
| 2 | |
| 261 | 3 Digital Image Library servlet components |
| 153 | 4 |
| 261 | 5 Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de) |
| 153 | 6 |
| 261 | 7 This program is free software; you can redistribute it and/or modify it |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2 of the License, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 Please read license.txt for the full details. A copy of the GPL | |
| 13 may be found at http://www.gnu.org/copyleft/lgpl.html | |
| 153 | 14 |
| 261 | 15 You should have received a copy of the GNU General Public License |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 153 | 19 * |
| 20 * Created on 02.09.2003 by casties | |
| 21 * | |
| 22 */ | |
| 557 | 23 package digilib.util; |
| 153 | 24 |
| 261 | 25 import java.io.File; |
| 26 import java.io.IOException; | |
| 27 | |
| 557 | 28 |
| 261 | 29 /** |
| 30 * General digilib parameter class. | |
| 153 | 31 * |
| 32 * @author casties | |
| 261 | 33 * |
| 153 | 34 */ |
| 35 public class Parameter { | |
| 36 /** real value */ | |
| 37 protected Object value = null; | |
| 38 | |
| 39 /** default value */ | |
| 40 protected Object defval = null; | |
| 41 | |
| 42 /** parameter name (e.g. in config file) */ | |
| 43 protected String name = null; | |
| 44 | |
| 45 /** parameter type */ | |
| 46 protected int type = 0; | |
| 47 | |
| 261 | 48 /** |
| 49 * Default constructor. | |
| 50 * | |
| 153 | 51 */ |
| 52 public Parameter() { | |
| 53 super(); | |
| 54 } | |
| 55 | |
| 261 | 56 /** |
| 57 * Constructor with name, default, and value. | |
| 153 | 58 * |
| 59 * @param value | |
| 60 * @param defval | |
| 61 */ | |
| 62 public Parameter(String name, Object defval, Object value) { | |
| 63 this.name = name; | |
| 64 this.value = value; | |
| 65 this.defval = defval; | |
| 66 } | |
| 67 | |
| 261 | 68 /** |
| 69 * Constructor with name, default, value, and type. | |
| 70 * | |
| 153 | 71 * @param value |
| 72 * @param defval | |
| 73 */ | |
| 74 public Parameter(String name, Object defval, Object value, int type) { | |
| 75 this.name = name; | |
| 76 this.value = value; | |
| 77 this.defval = defval; | |
| 78 this.type = type; | |
| 79 } | |
| 80 | |
| 261 | 81 /** |
| 82 * Is the value valid. | |
| 153 | 83 * |
| 84 * @return | |
| 85 */ | |
| 86 public boolean hasValue() { | |
| 87 return (value != null); | |
| 88 } | |
| 89 | |
| 261 | 90 /** |
| 91 * Try to set the value from a String. | |
| 153 | 92 * |
| 261 | 93 * Tries to convert the String to the same type as the default value. Sets |
| 94 * the value anyway if the default is null. Returns if the value could be | |
| 95 * set. | |
| 153 | 96 * |
| 97 * @param val | |
| 98 * @return | |
| 99 */ | |
| 100 public boolean setValueFromString(String val) { | |
| 554 | 101 if (val == null) { |
| 102 val = ""; | |
| 103 } | |
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104 // no default matches all |
| 153 | 105 if (defval == null) { |
| 106 this.value = val; | |
| 107 return true; | |
| 108 } | |
| 531 | 109 Class<? extends Object> c = defval.getClass(); |
| 153 | 110 // take String as is |
| 111 if (c == String.class) { | |
| 112 this.value = val; | |
| 113 return true; | |
| 114 } | |
| 261 | 115 // set File |
| 116 if (c == File.class) { | |
| 117 this.value = new File(val); | |
| 118 return true; | |
| 119 } | |
| 547 | 120 // set Options |
| 121 if (c == OptionsSet.class) { | |
| 122 this.value = new OptionsSet(val); | |
| 123 return true; | |
| 124 } | |
| 153 | 125 // set Boolean if string == "true" |
| 126 if (c == Boolean.class) { | |
| 127 this.value = new Boolean(val.compareToIgnoreCase("true") == 0); | |
| 128 return true; | |
| 129 } | |
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130 try { |
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131 // set Integer |
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132 if (c == Integer.class) { |
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133 this.value = new Integer(Integer.parseInt(val)); |
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134 return true; |
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135 } |
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136 // set Float |
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137 if (c == Float.class) { |
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138 this.value = new Float(Float.parseFloat(val)); |
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139 return true; |
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140 } |
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141 } catch (NumberFormatException e) { |
| 153 | 142 } |
| 261 | 143 // then it's unknown |
| 153 | 144 return false; |
| 145 } | |
| 146 | |
| 261 | 147 /** |
| 148 * Get the default as Object. | |
| 149 * | |
| 153 | 150 * @return |
| 151 */ | |
| 152 public Object getDefault() { | |
| 153 return defval; | |
| 154 } | |
| 155 | |
| 261 | 156 /** |
| 157 * Set the default. | |
| 158 * | |
| 153 | 159 * @param defval |
| 160 */ | |
| 161 public void setDefault(Object defval) { | |
| 162 this.defval = defval; | |
| 163 } | |
| 164 | |
| 261 | 165 /** |
| 166 * Get the value as Object. | |
| 153 | 167 * |
| 168 * Returns the default if the value is not set. | |
| 169 * | |
| 170 * @return | |
| 171 */ | |
| 172 public Object getValue() { | |
| 173 return (value != null) ? value : defval; | |
| 174 } | |
| 175 | |
| 176 public int getAsInt() { | |
| 177 Integer i = (Integer) getValue(); | |
| 178 return (i != null) ? i.intValue() : 0; | |
| 179 } | |
| 180 | |
| 181 public float getAsFloat() { | |
| 182 Float f = (Float) getValue(); | |
| 183 return (f != null) ? f.floatValue() : 0f; | |
| 184 } | |
| 185 | |
| 186 public String getAsString() { | |
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187 Object s = getValue(); |
| 261 | 188 if (s == null) { |
| 189 return ""; | |
| 190 } | |
| 191 if (s.getClass() == File.class) { | |
| 192 try { | |
| 193 return ((File) s).getCanonicalPath(); | |
| 194 } catch (IOException e) { | |
| 195 return "ERR: " + s.toString(); | |
| 196 } | |
| 197 } | |
| 198 return s.toString(); | |
| 153 | 199 } |
| 200 | |
| 201 public boolean getAsBoolean() { | |
| 202 Boolean b = (Boolean) getValue(); | |
| 203 return (b != null) ? b.booleanValue() : false; | |
| 204 } | |
| 205 | |
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206 public String[] parseAsArray(String separator) { |
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207 String s = getAsString(); |
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208 String[] sa = s.split(separator); |
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209 return sa; |
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210 } |
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211 |
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212 public float[] parseAsFloatArray(String separator) { |
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213 String s = getAsString(); |
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214 String[] sa = s.split(separator); |
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215 float[] fa = null; |
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216 try { |
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217 int n = sa.length; |
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218 fa = new float[n]; |
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219 for (int i = 0; i < n; i++) { |
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220 float f = Float.parseFloat(sa[i]); |
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221 fa[i] = f; |
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222 } |
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223 } catch (Exception e) { |
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224 } |
| 261 | 225 |
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226 return fa; |
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227 } |
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228 |
| 261 | 229 /** |
| 230 * Set the value. | |
| 153 | 231 * |
| 232 * @param value | |
| 233 */ | |
| 234 public void setValue(Object value) { | |
| 235 this.value = value; | |
| 236 } | |
| 237 | |
| 261 | 238 /** |
| 239 * Set the value. | |
|
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240 * |
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241 * @param value |
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242 */ |
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243 public void setValue(int value) { |
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244 this.value = new Integer(value); |
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245 } |
| 261 | 246 |
| 247 /** | |
| 248 * Set the value. | |
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249 * |
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250 * @param value |
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251 */ |
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252 public void setValue(float value) { |
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253 this.value = new Float(value); |
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254 } |
| 261 | 255 |
| 153 | 256 /** |
| 257 * @return | |
| 258 */ | |
| 259 public String getName() { | |
| 260 return name; | |
| 261 } | |
| 262 | |
| 263 /** | |
| 264 * @param name | |
| 265 */ | |
| 266 public void setName(String name) { | |
| 267 this.name = name; | |
| 268 } | |
| 269 | |
| 270 /** | |
| 271 * @return | |
| 272 */ | |
| 273 public int getType() { | |
| 274 return type; | |
| 275 } | |
| 276 | |
| 277 /** | |
| 278 * @param type | |
| 279 */ | |
| 280 public void setType(int type) { | |
| 281 this.type = type; | |
| 282 } | |
| 283 | |
| 284 } |