Mercurial > hg > digilib-old
annotate servlet/src/digilib/servlet/Parameter.java @ 181:afe7ff98bb71
Servlet version 1.18b1
- new transfer mode "rawfile" with mime-type application/octet-stream
- finally proper logging with Log4J!
- therefore a lot of debugging-prints changed
- the Util class is now useless
- ServletOps and FileOps are now purely static
| author | robcast |
|---|---|
| date | Fri, 21 Nov 2003 00:17:31 +0100 |
| parents | d40922628e4a |
| children | 3bce5fe0e78d |
| rev | line source |
|---|---|
| 153 | 1 /* Parameter -- General digilib parameter class. |
| 2 | |
| 3 Digital Image Library servlet components | |
| 4 | |
| 5 Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de) | |
| 6 | |
| 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 | |
| 14 | |
| 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 | |
| 19 * | |
| 20 * Created on 02.09.2003 by casties | |
| 21 * | |
| 22 */ | |
| 23 package digilib.servlet; | |
| 24 | |
| 25 /** General digilib parameter class. | |
| 26 * | |
| 27 * @author casties | |
| 28 * | |
| 29 */ | |
| 30 public class Parameter { | |
| 31 /** real value */ | |
| 32 protected Object value = null; | |
| 33 | |
| 34 /** default value */ | |
| 35 protected Object defval = null; | |
| 36 | |
| 37 /** parameter name (e.g. in config file) */ | |
| 38 protected String name = null; | |
| 39 | |
| 40 /** parameter type */ | |
| 41 protected int type = 0; | |
| 42 | |
| 43 /** Default constructor. | |
| 44 * | |
| 45 */ | |
| 46 public Parameter() { | |
| 47 super(); | |
| 48 } | |
| 49 | |
| 50 /** Constructor with name, default, and value. | |
| 51 * | |
| 52 * @param value | |
| 53 * @param defval | |
| 54 */ | |
| 55 public Parameter(String name, Object defval, Object value) { | |
| 56 this.name = name; | |
| 57 this.value = value; | |
| 58 this.defval = defval; | |
| 59 } | |
| 60 | |
| 61 /** Constructor with name, default, value, and type. | |
| 62 * @param value | |
| 63 * @param defval | |
| 64 */ | |
| 65 public Parameter(String name, Object defval, Object value, int type) { | |
| 66 this.name = name; | |
| 67 this.value = value; | |
| 68 this.defval = defval; | |
| 69 this.type = type; | |
| 70 } | |
| 71 | |
| 72 /** Is the value valid. | |
| 73 * | |
| 74 * @return | |
| 75 */ | |
| 76 public boolean hasValue() { | |
| 77 return (value != null); | |
| 78 } | |
| 79 | |
| 80 /** Try to set the value from a String. | |
| 81 * | |
| 82 * Tries to convert the String to the same type as the default value. | |
| 83 * Sets the value anyway if the default is null. | |
| 84 * Returns if the value could be set. | |
| 85 * | |
| 86 * @param val | |
| 87 * @return | |
| 88 */ | |
| 89 public boolean setValueFromString(String val) { | |
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90 // no default matches all |
| 153 | 91 if (defval == null) { |
| 92 this.value = val; | |
| 93 return true; | |
| 94 } | |
| 95 Class c = defval.getClass(); | |
| 96 // take String as is | |
| 97 if (c == String.class) { | |
| 98 this.value = val; | |
| 99 return true; | |
| 100 } | |
| 101 // set Boolean if string == "true" | |
| 102 if (c == Boolean.class) { | |
| 103 this.value = new Boolean(val.compareToIgnoreCase("true") == 0); | |
| 104 return true; | |
| 105 } | |
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106 try { |
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107 // set Integer |
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108 if (c == Integer.class) { |
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109 this.value = new Integer(Integer.parseInt(val)); |
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110 return true; |
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111 } |
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112 // set Float |
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113 if (c == Float.class) { |
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114 this.value = new Float(Float.parseFloat(val)); |
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115 return true; |
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116 } |
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117 } catch (NumberFormatException e) { |
| 153 | 118 } |
| 119 // then it's unknown | |
| 120 return false; | |
| 121 } | |
| 122 | |
| 123 /** Get the default as Object. | |
| 124 * | |
| 125 * @return | |
| 126 */ | |
| 127 public Object getDefault() { | |
| 128 return defval; | |
| 129 } | |
| 130 | |
| 131 /** Set the default. | |
| 132 * @param defval | |
| 133 */ | |
| 134 public void setDefault(Object defval) { | |
| 135 this.defval = defval; | |
| 136 } | |
| 137 | |
| 138 /** Get the value as Object. | |
| 139 * | |
| 140 * Returns the default if the value is not set. | |
| 141 * | |
| 142 * @return | |
| 143 */ | |
| 144 public Object getValue() { | |
| 145 return (value != null) ? value : defval; | |
| 146 } | |
| 147 | |
| 148 public int getAsInt() { | |
| 149 Integer i = (Integer) getValue(); | |
| 150 return (i != null) ? i.intValue() : 0; | |
| 151 } | |
| 152 | |
| 153 public float getAsFloat() { | |
| 154 Float f = (Float) getValue(); | |
| 155 return (f != null) ? f.floatValue() : 0f; | |
| 156 } | |
| 157 | |
| 158 public String getAsString() { | |
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159 Object s = getValue(); |
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160 return (s != null) ? s.toString() : ""; |
| 153 | 161 } |
| 162 | |
| 163 public boolean getAsBoolean() { | |
| 164 Boolean b = (Boolean) getValue(); | |
| 165 return (b != null) ? b.booleanValue() : false; | |
| 166 } | |
| 167 | |
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168 public String[] parseAsArray(String separator) { |
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169 String s = getAsString(); |
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170 String[] sa = s.split(separator); |
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171 return sa; |
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172 } |
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173 |
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174 public float[] parseAsFloatArray(String separator) { |
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175 String s = getAsString(); |
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176 String[] sa = s.split(separator); |
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177 float[] fa = null; |
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178 try { |
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179 int n = sa.length; |
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180 fa = new float[n]; |
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181 for (int i = 0; i < n; i++) { |
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182 float f = Float.parseFloat(sa[i]); |
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183 fa[i] = f; |
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184 } |
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185 } catch (Exception e) { |
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186 } |
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187 |
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188 return fa; |
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189 } |
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190 |
| 153 | 191 /** Set the value. |
| 192 * | |
| 193 * @param value | |
| 194 */ | |
| 195 public void setValue(Object value) { | |
| 196 this.value = value; | |
| 197 } | |
| 198 | |
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199 /** Set the value. |
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200 * |
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201 * @param value |
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202 */ |
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203 public void setValue(int value) { |
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204 this.value = new Integer(value); |
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205 } |
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206 |
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207 /** Set the value. |
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208 * |
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209 * @param value |
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210 */ |
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211 public void setValue(float value) { |
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212 this.value = new Float(value); |
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213 } |
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214 |
| 153 | 215 /** |
| 216 * @return | |
| 217 */ | |
| 218 public String getName() { | |
| 219 return name; | |
| 220 } | |
| 221 | |
| 222 /** | |
| 223 * @param name | |
| 224 */ | |
| 225 public void setName(String name) { | |
| 226 this.name = name; | |
| 227 } | |
| 228 | |
| 229 /** | |
| 230 * @return | |
| 231 */ | |
| 232 public int getType() { | |
| 233 return type; | |
| 234 } | |
| 235 | |
| 236 /** | |
| 237 * @param type | |
| 238 */ | |
| 239 public void setType(int type) { | |
| 240 this.type = type; | |
| 241 } | |
| 242 | |
| 243 } |