YMDDateAdaptor.java
- /*
- * $Source$
- * $Revision$
- *
- * Copyright (C) 2000 Tim Joyce
- *
- * Part of Melati (http://melati.org), a framework for the rapid
- * development of clean, maintainable web applications.
- *
- * Melati is free software; Permission is granted to copy, distribute
- * and/or modify this software under the terms either:
- *
- * a) the GNU General Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at your option)
- * any later version,
- *
- * or
- *
- * b) any version of the Melati Software License, as published
- * at http://melati.org
- *
- * You should have received a copy of the GNU General Public License and
- * the Melati Software License along with this program;
- * if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
- * GNU General Public License and visit http://melati.org to obtain the
- * Melati Software License.
- *
- * Feel free to contact the Developers of Melati (http://melati.org),
- * if you would like to work out a different arrangement than the options
- * outlined here. It is our intention to allow Melati to be used by as
- * wide an audience as possible.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * Contact details for copyright holder:
- *
- * Tim Joyce <timj At paneris.org>
- * http://paneris.org/~timj
- */
- package org.melati.template;
- import java.sql.Date;
- import java.text.DateFormat;
- import java.util.Calendar;
- import org.melati.poem.BaseFieldAttributes;
- import org.melati.poem.Field;
- import org.melati.poem.IntegerPoemType;
- import org.melati.poem.PoemLocale;
- import org.melati.poem.PoemType;
- import org.melati.poem.SQLPoemType;
- /**
- * A numeric year type.
- */
- class YearPoemType extends IntegerPoemType implements PoemType<Integer> {
- /** First year for a dropdown. */
- static final int firstYear = 2000;
- /** Limit (excluded) year for a dropdown. */
- static final int limitYear = 2023;
-
- /**
- * Constructor.
- * @param nullable whether null is an allowed value
- * @param low lower (inclusive) limit
- * @param limit upper (exclusive) limit
- */
- public YearPoemType(boolean nullable, int low, int limit) {
- super(nullable);
- setRawRange(new Integer(low), new Integer(limit));
- }
- protected boolean _canRepresent(SQLPoemType<?> other) {
- return other instanceof YearPoemType;
- }
- /**
- * {@inheritDoc}
- * @see java.lang.Object#toString()
- */
- public String toString() {
- return super.toString() + " (year)";
- }
- }
- /**
- * A numeric month type.
- */
- class MonthPoemType extends IntegerPoemType {
- /**
- * Constructor.
- * @param nullable whether null is an allowed value
- */
- public MonthPoemType(boolean nullable) {
- super(nullable);
- setRawRange(new Integer(1), new Integer(13));
- }
- protected boolean _canRepresent(SQLPoemType<?> other) {
- return other instanceof MonthPoemType;
- }
- protected String _stringOfCooked(Object raw,
- PoemLocale locale, int style) {
- int m = ((Integer)raw).intValue();
- switch (style) {
- case DateFormat.FULL: case DateFormat.LONG:
- return locale.monthName(m);
- case DateFormat.MEDIUM:
- return locale.shortMonthName(m);
- default:
- return "" + m;
- }
- }
- /**
- * {@inheritDoc}
- * @see java.lang.Object#toString()
- */
- public String toString() {
- return super.toString() + " (month)";
- }
- }
- /**
- * A numeric day type.
- */
- class DayPoemType extends IntegerPoemType {
- /**
- * Constructor.
- * @param nullable whether null is an allowed value
- */
- public DayPoemType(boolean nullable) {
- super(nullable);
- setRawRange(new Integer(1), new Integer(32));
- }
- protected boolean _canRepresent(SQLPoemType<?> other) {
- return other instanceof DayPoemType;
- }
- /**
- * {@inheritDoc}
- * @see java.lang.Object#toString()
- */
- public String toString() {
- return super.toString() + " (day)";
- }
- }
- /**
- * An adaptor for a string date in YMD format.
- * See for example org.melati.poem.DatePoemType-dropdown.wm
- */
- public class YMDDateAdaptor implements TempletAdaptor {
- protected static final String
- yearSuffix = "-year",
- monthSuffix = "-month",
- daySuffix = "-day";
- /** The instance. */
- public static final YMDDateAdaptor it = new YMDDateAdaptor();
- protected String getFormOrDie(ServletTemplateContext context,
- String fieldName, String suffix) {
- String fullName = fieldName + suffix;
- String value = context.getFormField(fullName);
- if (value == null)
- throw new MissingFieldException(this, fieldName, fullName);
- return value;
- }
- @Override
- public Object rawFrom(ServletTemplateContext context, String fieldName) {
- String year = getFormOrDie(context, fieldName, yearSuffix);
- String month = getFormOrDie(context, fieldName, monthSuffix);
- String day = getFormOrDie(context, fieldName, daySuffix);
- if (year.equals("") && month.equals("") && day.equals(""))
- return null;
- else if (!year.equals("") && !month.equals("") ) {
- if (day.equals("")) // MYDate template need default day
- day = "1";
- Calendar cal = Calendar.getInstance();
- cal.set(Integer.parseInt(year),
- Integer.parseInt(month) - 1,
- Integer.parseInt(day));
- return new Date(cal.getTime().getTime());
- } else {
- throw new PartlyNullException(fieldName);
- }
- }
- /**
- * @param dateField date field to extract year field from
- * @return year constituent of date
- */
- public Field<Integer> yearField(Field<Date> dateField) {
- Calendar when = when(dateField);
- // This isn't meant to be used, so we don't try to localise it
- String displayName = dateField.getDisplayName() + " (year)";
- return new Field<Integer>(
- when == null ? null : new Integer(when.get(Calendar.YEAR)),
- new BaseFieldAttributes<Integer>(
- dateField.getName() + yearSuffix,
- displayName,
- null,
- new YearPoemType(dateField.getType().getNullable(),
- YearPoemType.firstYear, YearPoemType.limitYear),
- 5, 1,
- null, false, true, true));
- }
- /**
- * @param dateField date field to extract month field from
- * @return month constituent of date
- */
- public Field<Integer> monthField(Field<Date> dateField) {
- Calendar when = when(dateField);
- // This isn't meant to be used, so we don't try to localise it
- String displayName = dateField.getDisplayName() + " (month)";
- return new Field<Integer>(
- when == null ? null : new Integer(when.get(Calendar.MONTH) + 1),
- new BaseFieldAttributes<Integer>(
- dateField.getName() + monthSuffix, displayName, null,
- dateField.getType().getNullable() ? new MonthPoemType(true) :
- new MonthPoemType(false),
- 3, 1,
- null, false, true, true));
- }
- /**
- * @param dateField date field to extract day field from
- * @return day constituent of date
- */
- public Field<Integer> dayField(Field<Date> dateField) {
- Calendar when = when(dateField);
- // This isn't meant to be used, so we don't try to localise it
- String displayName = dateField.getDisplayName() + " (day)";
- return new Field<Integer>(
- when == null ? null : new Integer(when.get(Calendar.DAY_OF_MONTH)),
- new BaseFieldAttributes<Integer>(
- dateField.getName() + daySuffix, displayName, null,
- dateField.getType().getNullable() ? new DayPoemType(true) :
- new DayPoemType(false),
- 2, 1,
- null, false, true, true));
- }
-
- protected Calendar when(Field<Date> dateField) {
- if (dateField.getRaw() == null) return null;
- Calendar when = Calendar.getInstance();
- when.setTime((java.util.Date)dateField.getRaw());
- return when;
- }
- }