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package org.apache.tapestry.valid; |
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import java.text.DateFormat; |
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import java.text.ParseException; |
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import java.text.SimpleDateFormat; |
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import java.util.Calendar; |
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import java.util.Date; |
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import java.util.GregorianCalendar; |
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import java.util.HashMap; |
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import java.util.Map; |
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import org.apache.tapestry.IMarkupWriter; |
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import org.apache.tapestry.IRequestCycle; |
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import org.apache.tapestry.form.IFormComponent; |
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public class DateValidator extends BaseValidator |
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{ |
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public static final String DEFAULT_DISPLAY_FORMAT = "MM/DD/YYYY"; |
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public static final DateFormat DEFAULT_DATE_FORMAT = new SimpleDateFormat("MM/dd/yyyy"); |
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private DateFormat _format; |
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private String _displayFormat; |
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private Date _minimum; |
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private Date _maximum; |
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private Calendar _calendar; |
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private String _scriptPath = "/org/apache/tapestry/valid/DateValidator.script"; |
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private String _dateTooEarlyMessage; |
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private String _dateTooLateMessage; |
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private String _invalidDateFormatMessage; |
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public DateValidator() |
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{ |
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} |
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public DateValidator(String initializer) |
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{ |
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super(initializer); |
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} |
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public void setFormat(DateFormat value) |
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{ |
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_format = value; |
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} |
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public DateFormat getFormat() |
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{ |
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return _format; |
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} |
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public DateFormat getEffectiveFormat() |
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{ |
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if (_format == null) |
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return DEFAULT_DATE_FORMAT; |
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return _format; |
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} |
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public String getDisplayFormat() |
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{ |
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return _displayFormat; |
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} |
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public void setDisplayFormat(String value) |
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{ |
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_displayFormat = value; |
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} |
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public String getEffectiveDisplayFormat() |
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{ |
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if (_displayFormat == null) |
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{ |
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DateFormat format = getEffectiveFormat(); |
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if (format instanceof SimpleDateFormat) |
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return ((SimpleDateFormat) format).toPattern(); |
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return DEFAULT_DISPLAY_FORMAT; |
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} |
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return _displayFormat; |
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} |
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public String toString(IFormComponent file, Object value) |
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{ |
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if (value == null) |
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return null; |
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Date date = (Date) value; |
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DateFormat format = getEffectiveFormat(); |
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synchronized (format) |
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{ |
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return format.format(date); |
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} |
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} |
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public Object toObject(IFormComponent field, String value) throws ValidatorException |
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{ |
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if (checkRequired(field, value)) |
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return null; |
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DateFormat format = getEffectiveFormat(); |
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Date result; |
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try |
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{ |
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synchronized (format) |
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result = format.parse(value); |
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} |
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if (_calendar == null) |
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_calendar = new GregorianCalendar(); |
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_calendar.setTime(result); |
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if (_calendar.get(Calendar.YEAR) < 1000) |
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result = null; |
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} |
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catch (ParseException ex) |
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{ |
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result = null; |
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} |
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if (result == null) |
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throw new ValidatorException(buildInvalidDateFormatMessage(field), |
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ValidationConstraint.DATE_FORMAT); |
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if (_minimum != null && _minimum.compareTo(result) > 0) |
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throw new ValidatorException(buildDateTooEarlyMessage(field, format.format(_minimum)), |
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ValidationConstraint.TOO_SMALL); |
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if (_maximum != null && _maximum.compareTo(result) < 0) |
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throw new ValidatorException(buildDateTooLateMessage(field, format.format(_maximum)), |
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ValidationConstraint.TOO_LARGE); |
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return result; |
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} |
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public Date getMaximum() |
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{ |
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return _maximum; |
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} |
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public void setMaximum(Date maximum) |
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{ |
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_maximum = maximum; |
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} |
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public Date getMinimum() |
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{ |
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return _minimum; |
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} |
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public void setMinimum(Date minimum) |
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{ |
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_minimum = minimum; |
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} |
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public void renderValidatorContribution(IFormComponent field, IMarkupWriter writer, |
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IRequestCycle cycle) |
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{ |
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if (!(isClientScriptingEnabled() && isRequired())) |
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return; |
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Map symbols = new HashMap(); |
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symbols.put("requiredMessage", buildRequiredMessage(field)); |
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processValidatorScript(_scriptPath, cycle, field, symbols); |
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} |
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public String getScriptPath() |
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{ |
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return _scriptPath; |
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} |
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public void setScriptPath(String scriptPath) |
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{ |
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_scriptPath = scriptPath; |
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} |
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public String getDateTooEarlyMessage() |
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return _dateTooEarlyMessage; |
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} |
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public String getDateTooLateMessage() |
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{ |
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return _dateTooLateMessage; |
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} |
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public String getInvalidDateFormatMessage() |
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{ |
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return _invalidDateFormatMessage; |
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} |
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protected String buildInvalidDateFormatMessage(IFormComponent field) |
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{ |
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String pattern = getPattern(_invalidDateFormatMessage, "invalid-date-format", field |
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.getPage().getLocale()); |
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return formatString(pattern, field.getDisplayName(), getEffectiveDisplayFormat()); |
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} |
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protected String buildDateTooEarlyMessage(IFormComponent field, String earliestDate) |
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{ |
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String pattern = getPattern(_dateTooEarlyMessage, "date-too-early", field.getPage() |
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.getLocale()); |
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return formatString(pattern, field.getDisplayName(), earliestDate); |
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} |
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protected String buildDateTooLateMessage(IFormComponent field, String latestDate) |
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{ |
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String pattern = getPattern(_dateTooLateMessage, "date-too-late", field.getPage() |
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.getLocale()); |
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return formatString(pattern, field.getDisplayName(), latestDate); |
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} |
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public void setDateTooEarlyMessage(String string) |
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{ |
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_dateTooEarlyMessage = string; |
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} |
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public void setDateTooLateMessage(String string) |
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{ |
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_dateTooLateMessage = string; |
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} |
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public void setInvalidDateFormatMessage(String string) |
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{ |
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_invalidDateFormatMessage = string; |
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} |
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} |