| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| DataType |
|
| 1.9444444444444444;1.944 |
| 1 | package us.daveread.utility.formatcheck.format; | |
| 2 | ||
| 3 | import java.util.*; | |
| 4 | ||
| 5 | /** | |
| 6 | * <p>Title: DataType | |
| 7 | * <p>Description: Represents the data type of a field. The class is | |
| 8 | * abstract. Each data type will subclass this class and add an isValid() method | |
| 9 | * which will validate the input data aginst the rules for its specific type of | |
| 10 | * data. | |
| 11 | * <p>Copyright: Copyright (c) 2005 | |
| 12 | * <p>This program is free software; you can redistribute it and/or modify | |
| 13 | * it under the terms of the GNU General Public License as published by | |
| 14 | * the Free Software Foundation; either version 2 of the License, or | |
| 15 | * (at your option) any later version. | |
| 16 | * <p>This program is distributed in the hope that it will be useful, | |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 | * GNU General Public License for more details. | |
| 20 | * <p>You should have received a copy of the GNU General Public License | |
| 21 | * along with this program; if not, write to the Free Software | |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 23 | * </p> | |
| 24 | * | |
| 25 | * @author David Read | |
| 26 | * @version $Id: DataType.java,v 1.1.1.1 2006/05/22 02:14:09 daveread Exp $ | |
| 27 | */ | |
| 28 | public abstract class DataType { | |
| 29 | /** The display name for this data type */ | |
| 30 | 88 | private String typeName = "UNASSIGNED TYPE NAME"; |
| 31 | ||
| 32 | /** The format pattern for the data type, required for some data types */ | |
| 33 | private String formatDefinition; | |
| 34 | ||
| 35 | /** The display description of the data type, optional */ | |
| 36 | private String description; | |
| 37 | ||
| 38 | /** The minimum value allowed in the field, optional */ | |
| 39 | private double minimum; | |
| 40 | ||
| 41 | /** Whether the minimum value was set */ | |
| 42 | private boolean minimumSet; | |
| 43 | ||
| 44 | /** The maximum value allowed in the field, optional */ | |
| 45 | private double maximum; | |
| 46 | ||
| 47 | /** Whether the maximum value was set */ | |
| 48 | private boolean maximumSet; | |
| 49 | ||
| 50 | /** The set of accepted values the field may contain, optional */ | |
| 51 | private AcceptedValue acceptedValues[]; | |
| 52 | ||
| 53 | /** | |
| 54 | * Expects the format definition and description for the data type. These | |
| 55 | * are both optional, though the format definition is required by some | |
| 56 | * concrete data type implementations. | |
| 57 | * | |
| 58 | * @param aFormatDefinition String The format definition appropriate to the | |
| 59 | * data type. | |
| 60 | * @param aDescription String The display description of the data type. | |
| 61 | */ | |
| 62 | 88 | public DataType(String aFormatDefinition, String aDescription) { |
| 63 | 88 | setFormatDefinition(aFormatDefinition); |
| 64 | 88 | setDescription(aDescription); |
| 65 | 88 | acceptedValues = new AcceptedValue[0]; |
| 66 | ||
| 67 | // Assign somewhat useful value if subclass fails to call setName() | |
| 68 | 88 | setTypeName(this.getClass().getName()); |
| 69 | 88 | } |
| 70 | ||
| 71 | /** | |
| 72 | * Checks the content of the field against its allowed values. | |
| 73 | * Uses the isValid method, overridden in subclasses, to determine | |
| 74 | * that data is valid. | |
| 75 | * | |
| 76 | * @param fieldValue String containing value in the input record | |
| 77 | * @return String Null if the data is fine, otherwise an error message | |
| 78 | */ | |
| 79 | public String validate(String fieldValue) { | |
| 80 | String message; | |
| 81 | ||
| 82 | 52 | message = null; |
| 83 | ||
| 84 | 52 | if (getNumAcceptedValues() > 0) { |
| 85 | 13 | if (!isAcceptedValue(fieldValue)) { |
| 86 | 6 | message = "is not in accepted value list ("; |
| 87 | 12 | for (int value = 0; value < getNumAcceptedValues(); ++value) { |
| 88 | 6 | if (value > 0) { |
| 89 | 0 | message += ", "; |
| 90 | } | |
| 91 | 6 | message += getAcceptedValue(value).getValue(); |
| 92 | } | |
| 93 | 6 | message += ")"; |
| 94 | } | |
| 95 | } | |
| 96 | ||
| 97 | 52 | if (message == null && minimumSet) { |
| 98 | try { | |
| 99 | 0 | if (Double.parseDouble(fieldValue) < minimum) { |
| 100 | 0 | throw new IllegalArgumentException("Value below minimum"); |
| 101 | } | |
| 102 | } | |
| 103 | 0 | catch (Throwable any) { |
| 104 | 0 | message = "is below the minimum value of " + minimum; |
| 105 | 0 | } |
| 106 | } | |
| 107 | ||
| 108 | 52 | if (message == null && maximumSet) { |
| 109 | try { | |
| 110 | 0 | if (Double.parseDouble(fieldValue) > maximum) { |
| 111 | 0 | throw new IllegalArgumentException("Value above maximum"); |
| 112 | } | |
| 113 | } | |
| 114 | 0 | catch (Throwable any) { |
| 115 | 0 | message = "is above the maximum value of " + maximum; |
| 116 | 0 | } |
| 117 | } | |
| 118 | ||
| 119 | 52 | if (message == null && !isValid(fieldValue)) { |
| 120 | 12 | message = "is not a " + getDescription(); |
| 121 | } | |
| 122 | ||
| 123 | 52 | return message; |
| 124 | } | |
| 125 | ||
| 126 | /** | |
| 127 | * Checks the value against the list of accepted values. | |
| 128 | * | |
| 129 | * @param fieldValue String containing value in the input record | |
| 130 | * @return boolean Whether the value was found in the list of accepted values | |
| 131 | */ | |
| 132 | private boolean isAcceptedValue(String fieldValue) { | |
| 133 | boolean okay; | |
| 134 | ||
| 135 | 13 | fieldValue = fieldValue.trim(); |
| 136 | ||
| 137 | 13 | okay = false; |
| 138 | 19 | for (int value = 0; value < getNumAcceptedValues(); ++value) { |
| 139 | 13 | if (fieldValue.equals(getAcceptedValue(value).getValue())) { |
| 140 | 7 | okay = true; |
| 141 | 7 | break; |
| 142 | } | |
| 143 | } | |
| 144 | ||
| 145 | 13 | return okay; |
| 146 | } | |
| 147 | ||
| 148 | /** | |
| 149 | * Checks the content of the field against its allowed values. This | |
| 150 | * method is specific to the actual data type and is therefore | |
| 151 | * abstract in this class. Each data type must subclass this class and | |
| 152 | * implement this method. | |
| 153 | * | |
| 154 | * The subclass must also call the setTypeName method to assign a display | |
| 155 | * name for the data type. | |
| 156 | * | |
| 157 | * @param fieldValue String containing value in the input record | |
| 158 | * @return boolean If the data is fine return true, otherwise false | |
| 159 | */ | |
| 160 | public abstract boolean isValid(String fieldValue); | |
| 161 | ||
| 162 | /** | |
| 163 | * Set the display name for the data type. Each subclass should call | |
| 164 | * this in its constructor. | |
| 165 | * | |
| 166 | * @param aTypeName String The display name for the data type instance. | |
| 167 | */ | |
| 168 | protected void setTypeName(String aTypeName) { | |
| 169 | 176 | typeName = aTypeName; |
| 170 | 176 | } |
| 171 | ||
| 172 | /** | |
| 173 | * Gets the type name assigned to this data type. | |
| 174 | * | |
| 175 | * @return String The data type display name. | |
| 176 | */ | |
| 177 | public String getTypeName() { | |
| 178 | 13 | return typeName; |
| 179 | } | |
| 180 | ||
| 181 | /** | |
| 182 | * Sets the format definition for this instance of a data type. For instance | |
| 183 | * a date data type may allow the definition to control the format of the | |
| 184 | * date string, and would therefore pass that date format string into this method. | |
| 185 | * | |
| 186 | * @param aFormatDefinition String The format string for the data type. | |
| 187 | */ | |
| 188 | private void setFormatDefinition(String aFormatDefinition) { | |
| 189 | 88 | formatDefinition = aFormatDefinition; |
| 190 | 88 | } |
| 191 | ||
| 192 | /** | |
| 193 | * Gets the format definition for this data type. It may be null. | |
| 194 | * | |
| 195 | * @return String The format type, or null if none was supplied. | |
| 196 | */ | |
| 197 | public String getFormatDefinition() { | |
| 198 | 41 | return formatDefinition; |
| 199 | } | |
| 200 | ||
| 201 | /** | |
| 202 | * Sets the display description for this data type. | |
| 203 | * | |
| 204 | * @param aDescription String The display description for this data type. | |
| 205 | */ | |
| 206 | private void setDescription(String aDescription) { | |
| 207 | 88 | description = aDescription; |
| 208 | 88 | } |
| 209 | ||
| 210 | /** | |
| 211 | * Gets the display description for the data type. If none was provided, | |
| 212 | * the returned value will be the combination of the type name and | |
| 213 | * format definition. | |
| 214 | * | |
| 215 | * @return String The display description for this data type. | |
| 216 | */ | |
| 217 | public String getDescription() { | |
| 218 | 19 | if (description == null) { |
| 219 | 4 | description = getTypeName(); |
| 220 | 4 | if (getFormatDefinition() != null) { |
| 221 | 4 | description += " (" + getFormatDefinition() + ")"; |
| 222 | } | |
| 223 | } | |
| 224 | ||
| 225 | 19 | return description; |
| 226 | } | |
| 227 | ||
| 228 | /** | |
| 229 | * Set the maximum value allowed in the field for this data type. | |
| 230 | * | |
| 231 | * @param aMaximum double The maximum value allowed. | |
| 232 | */ | |
| 233 | public void setMaximum(double aMaximum) { | |
| 234 | 1 | maximum = aMaximum; |
| 235 | 1 | maximumSet = true; |
| 236 | 1 | } |
| 237 | ||
| 238 | /** | |
| 239 | * Get the maximum value allowed in the field for this data type. | |
| 240 | * | |
| 241 | * @return double The maximum value allowed. | |
| 242 | */ | |
| 243 | public double getMaximum() { | |
| 244 | 1 | return maximum; |
| 245 | } | |
| 246 | ||
| 247 | /** | |
| 248 | * Set the minimum value allowed in the field for this data type. | |
| 249 | * | |
| 250 | * @param aMinimum double The minimum value allowed. | |
| 251 | */ | |
| 252 | public void setMinimum(double aMinimum) { | |
| 253 | 1 | minimum = aMinimum; |
| 254 | 1 | minimumSet = true; |
| 255 | 1 | } |
| 256 | ||
| 257 | /** | |
| 258 | * Get the minimum value allowed in the field for this data type. | |
| 259 | * | |
| 260 | * @return double The minimum value allowed. | |
| 261 | */ | |
| 262 | public double getMinimum() { | |
| 263 | 1 | return minimum; |
| 264 | } | |
| 265 | ||
| 266 | /** | |
| 267 | * Add a value that will be allowed in the field. Any arbitrary number of values | |
| 268 | * may be added. If no accepted values are added, all values will be | |
| 269 | * allowed, and passed onto the subclass for verification. | |
| 270 | * | |
| 271 | * @param aAcceptedValue AcceptedValue An accepted value for the field. | |
| 272 | */ | |
| 273 | public void addAcceptedValue(AcceptedValue aAcceptedValue) { | |
| 274 | 25 | List tempAcceptedValues = new ArrayList(Arrays.asList(acceptedValues)); |
| 275 | 25 | tempAcceptedValues.add(aAcceptedValue); |
| 276 | 25 | acceptedValues = (AcceptedValue[]) tempAcceptedValues.toArray(new |
| 277 | AcceptedValue[tempAcceptedValues.size()]); | |
| 278 | 25 | } |
| 279 | ||
| 280 | /** | |
| 281 | * Get the number of accepted values associated with this data type. | |
| 282 | * | |
| 283 | * @return int The number of accepted values for this data type. | |
| 284 | */ | |
| 285 | public int getNumAcceptedValues() { | |
| 286 | 84 | return acceptedValues.length; |
| 287 | } | |
| 288 | ||
| 289 | /** | |
| 290 | * Get one accepted value, located at the requested index. The index | |
| 291 | * must be >= 0 and < the number of accepted values. | |
| 292 | * | |
| 293 | * @param aIndex int The index whose accepted value is to be obtained. | |
| 294 | * @return AcceptedValue The accepted value found at the requested index. | |
| 295 | */ | |
| 296 | public AcceptedValue getAcceptedValue(int aIndex) { | |
| 297 | 20 | return acceptedValues[aIndex]; |
| 298 | } | |
| 299 | ||
| 300 | /** | |
| 301 | * Convenience to report display description as default string value. | |
| 302 | * | |
| 303 | * @return String The display description for the data type. | |
| 304 | */ | |
| 305 | public String toString() { | |
| 306 | 2 | return getDescription(); |
| 307 | } | |
| 308 | } |