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comparison: src/net/fortuna/ical4j/model/property/DateProperty.java
src/net/fortuna/ical4j/model/property/DateProperty.java
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| 1 /** | |
| 2 * Copyright (c) 2012, Ben Fortuna | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * | |
| 9 * o Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * o Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * o Neither the name of Ben Fortuna nor the names of any other contributors | |
| 17 * may be used to endorse or promote products derived from this software | |
| 18 * without specific prior written permission. | |
| 19 * | |
| 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 */ | |
| 32 package net.fortuna.ical4j.model.property; | |
| 33 | |
| 34 import java.io.IOException; | |
| 35 import java.net.URISyntaxException; | |
| 36 import java.text.ParseException; | |
| 37 | |
| 38 import net.fortuna.ical4j.model.Date; | |
| 39 import net.fortuna.ical4j.model.DateTime; | |
| 40 import net.fortuna.ical4j.model.Parameter; | |
| 41 import net.fortuna.ical4j.model.ParameterList; | |
| 42 import net.fortuna.ical4j.model.Property; | |
| 43 import net.fortuna.ical4j.model.PropertyFactory; | |
| 44 import net.fortuna.ical4j.model.TimeZone; | |
| 45 import net.fortuna.ical4j.model.ValidationException; | |
| 46 import net.fortuna.ical4j.model.parameter.TzId; | |
| 47 import net.fortuna.ical4j.model.parameter.Value; | |
| 48 import net.fortuna.ical4j.util.ParameterValidator; | |
| 49 import net.fortuna.ical4j.util.Strings; | |
| 50 | |
| 51 /** | |
| 52 * $Id$ | |
| 53 * | |
| 54 * Created on 9/07/2005 | |
| 55 * | |
| 56 * Base class for properties with a DATE or DATE-TIME value. Note that some sub-classes may only allow either a DATE or | |
| 57 * a DATE-TIME value, for which additional rules/validation should be specified. | |
| 58 * @author Ben Fortuna | |
| 59 */ | |
| 60 public abstract class DateProperty extends Property { | |
| 61 | |
| 62 private static final long serialVersionUID = 3160883132732961321L; | |
| 63 | |
| 64 private Date date; | |
| 65 | |
| 66 private TimeZone timeZone; | |
| 67 | |
| 68 /** | |
| 69 * @param name the property name | |
| 70 * @param parameters a list of initial parameters | |
| 71 */ | |
| 72 public DateProperty(final String name, final ParameterList parameters, PropertyFactory factory) { | |
| 73 super(name, parameters, factory); | |
| 74 } | |
| 75 | |
| 76 /** | |
| 77 * @param name the property name | |
| 78 */ | |
| 79 public DateProperty(final String name, PropertyFactory factory) { | |
| 80 super(name, factory); | |
| 81 } | |
| 82 | |
| 83 /** | |
| 84 * Creates a new instance of the named property with an initial timezone. | |
| 85 * @param name property name | |
| 86 * @param timezone initial timezone | |
| 87 */ | |
| 88 public DateProperty(final String name, TimeZone timezone, PropertyFactory factory) { | |
| 89 super(name, factory); | |
| 90 updateTimeZone(timezone); | |
| 91 } | |
| 92 | |
| 93 /** | |
| 94 * @return Returns the date. | |
| 95 */ | |
| 96 public final Date getDate() { | |
| 97 return date; | |
| 98 } | |
| 99 | |
| 100 /** | |
| 101 * Sets the date value of this property. The timezone and value of this | |
| 102 * instance will also be updated accordingly. | |
| 103 * @param date The date to set. | |
| 104 */ | |
| 105 public final void setDate(final Date date) { | |
| 106 this.date = date; | |
| 107 if (date instanceof DateTime) { | |
| 108 if (Value.DATE.equals(getParameter(Parameter.VALUE))) { | |
| 109 getParameters().replace(Value.DATE_TIME); | |
| 110 } | |
| 111 updateTimeZone(((DateTime) date).getTimeZone()); | |
| 112 } | |
| 113 else { | |
| 114 if (date != null) { | |
| 115 getParameters().replace(Value.DATE); | |
| 116 } | |
| 117 /* | |
| 118 else { | |
| 119 getParameters().removeAll(Parameter.VALUE); | |
| 120 } | |
| 121 */ | |
| 122 // ensure timezone is null for VALUE=DATE or null properties.. | |
| 123 updateTimeZone(null); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 /** | |
| 128 * Default setValue() implementation. Allows for either DATE or DATE-TIME values. | |
| 129 * | |
| 130 * @param value a string representation of a DATE or DATE-TIME value | |
| 131 * @throws ParseException where the specified value is not a valid DATE or DATE-TIME | |
| 132 * representation | |
| 133 */ | |
| 134 public void setValue(final String value) throws ParseException { | |
| 135 // value can be either a date-time or a date.. | |
| 136 if (Value.DATE.equals(getParameter(Parameter.VALUE))) { | |
| 137 // ensure timezone is null for VALUE=DATE properties.. | |
| 138 updateTimeZone(null); | |
| 139 this.date = new Date(value); | |
| 140 } | |
| 141 else { | |
| 142 this.date = new DateTime(value, timeZone); | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 /** | |
| 147 * {@inheritDoc} | |
| 148 */ | |
| 149 public String getValue() { | |
| 150 return Strings.valueOf(getDate()); | |
| 151 } | |
| 152 | |
| 153 /** | |
| 154 * Publically available method to update the current timezone. | |
| 155 * @param timezone a timezone instance | |
| 156 */ | |
| 157 public void setTimeZone(final TimeZone timezone) { | |
| 158 updateTimeZone(timezone); | |
| 159 } | |
| 160 | |
| 161 /** | |
| 162 * @return the timezone | |
| 163 */ | |
| 164 public final TimeZone getTimeZone() { | |
| 165 return timeZone; | |
| 166 } | |
| 167 | |
| 168 /** | |
| 169 * {@inheritDoc} | |
| 170 */ | |
| 171 public int hashCode() { | |
| 172 return getDate().hashCode(); | |
| 173 } | |
| 174 | |
| 175 /** | |
| 176 * Updates the timezone associated with the property's value. If the specified timezone is equivalent to UTC any | |
| 177 * existing TZID parameters will be removed. Note that this method is only applicable where the current date is an | |
| 178 * instance of <code>DateTime</code>. For all other cases an <code>UnsupportedOperationException</code> will be | |
| 179 * thrown. | |
| 180 * @param vTimeZone | |
| 181 */ | |
| 182 private void updateTimeZone(final TimeZone timezone) { | |
| 183 this.timeZone = timezone; | |
| 184 if (timezone != null) { | |
| 185 if (getDate() != null && !(getDate() instanceof DateTime)) { | |
| 186 throw new UnsupportedOperationException( | |
| 187 "TimeZone is not applicable to current value"); | |
| 188 } | |
| 189 if (getDate() != null) { | |
| 190 ((DateTime) getDate()).setTimeZone(timezone); | |
| 191 } | |
| 192 | |
| 193 getParameters().replace(new TzId(timezone.getID())); | |
| 194 } | |
| 195 else { | |
| 196 // use setUtc() to reset timezone.. | |
| 197 setUtc(isUtc()); | |
| 198 } | |
| 199 } | |
| 200 | |
| 201 /** | |
| 202 * Resets the VTIMEZONE associated with the property. If utc is true, any TZID parameters are removed and the Java | |
| 203 * timezone is updated to UTC time. If utc is false, TZID parameters are removed and the Java timezone is set to the | |
| 204 * default timezone (i.e. represents a "floating" local time) | |
| 205 * @param utc a UTC value | |
| 206 */ | |
| 207 public final void setUtc(final boolean utc) { | |
| 208 if (getDate() != null && (getDate() instanceof DateTime)) { | |
| 209 ((DateTime) getDate()).setUtc(utc); | |
| 210 } | |
| 211 getParameters().remove(getParameter(Parameter.TZID)); | |
| 212 } | |
| 213 | |
| 214 /** | |
| 215 * Indicates whether the current date value is specified in UTC time. | |
| 216 * @return true if the property is in UTC time, otherwise false | |
| 217 */ | |
| 218 public final boolean isUtc() { | |
| 219 if (getDate() instanceof DateTime) { | |
| 220 return ((DateTime) getDate()).isUtc(); | |
| 221 } | |
| 222 return false; | |
| 223 } | |
| 224 | |
| 225 /** | |
| 226 * {@inheritDoc} | |
| 227 */ | |
| 228 public void validate() throws ValidationException { | |
| 229 | |
| 230 ParameterValidator.getInstance().assertOneOrLess(Parameter.VALUE, | |
| 231 getParameters()); | |
| 232 | |
| 233 if (isUtc()) { | |
| 234 ParameterValidator.getInstance().assertNone(Parameter.TZID, | |
| 235 getParameters()); | |
| 236 } | |
| 237 else { | |
| 238 ParameterValidator.getInstance().assertOneOrLess(Parameter.TZID, | |
| 239 getParameters()); | |
| 240 } | |
| 241 | |
| 242 final Value value = (Value) getParameter(Parameter.VALUE); | |
| 243 | |
| 244 if (getDate() instanceof DateTime) { | |
| 245 | |
| 246 if (value != null && !Value.DATE_TIME.equals(value)) { | |
| 247 throw new ValidationException("VALUE parameter [" + value | |
| 248 + "] is invalid for DATE-TIME instance"); | |
| 249 } | |
| 250 | |
| 251 final DateTime dateTime = (DateTime) date; | |
| 252 | |
| 253 // ensure tzid matches date-time timezone.. | |
| 254 final Parameter tzId = getParameter(Parameter.TZID); | |
| 255 if (dateTime.getTimeZone() != null | |
| 256 && (tzId == null || !tzId.getValue().equals( | |
| 257 dateTime.getTimeZone().getID()))) { | |
| 258 | |
| 259 throw new ValidationException("TZID parameter [" + tzId | |
| 260 + "] does not match the timezone [" | |
| 261 + dateTime.getTimeZone().getID() + "]"); | |
| 262 } | |
| 263 } | |
| 264 else if (getDate() != null) { | |
| 265 | |
| 266 if (value == null) { | |
| 267 throw new ValidationException("VALUE parameter [" + Value.DATE | |
| 268 + "] must be specified for DATE instance"); | |
| 269 } | |
| 270 else if (!Value.DATE.equals(value)) { | |
| 271 throw new ValidationException("VALUE parameter [" + value | |
| 272 + "] is invalid for DATE instance"); | |
| 273 } | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 /** | |
| 278 * {@inheritDoc} | |
| 279 */ | |
| 280 public Property copy() throws IOException, URISyntaxException, ParseException { | |
| 281 final Property copy = super.copy(); | |
| 282 | |
| 283 ((DateProperty) copy).timeZone = timeZone; | |
| 284 ((DateProperty) copy).setValue(getValue()); | |
| 285 | |
| 286 return copy; | |
| 287 } | |
| 288 } |
