org.joda.time.field
Class AbstractPartialFieldProperty

java.lang.Object
  extended by org.joda.time.field.AbstractPartialFieldProperty
Direct Known Subclasses:
MonthDay.Property, Partial.Property, TimeOfDay.Property, YearMonth.Property, YearMonthDay.Property

public abstract class AbstractPartialFieldProperty
extends Object

AbstractPartialFieldProperty is a base class for binding a ReadablePartial to a DateTimeField.

It allows the date and time manipulation code to be field based yet still easy to use.

Since:
1.0
Author:
Stephen Colebourne, Brian S O'Neill

Constructor Summary
protected AbstractPartialFieldProperty()
          Constructor.
 
Method Summary
 int compareTo(ReadableInstant instant)
          Compare this field to the same field on another instant.
 int compareTo(ReadablePartial partial)
          Compare this field to the same field on another partial instant.
 boolean equals(Object object)
          Compares this property to another.
abstract  int get()
          Gets the value of this property from the instant.
 String getAsShortText()
          Gets the short textual value of this property from the instant as a string in the default locale.
 String getAsShortText(Locale locale)
          Gets the short textual value of this property from the instant as a string in the specified locale.
 String getAsString()
          Gets the value of this property from the instant as a string.
 String getAsText()
          Gets the textual value of this property from the instant as a string in the default locale.
 String getAsText(Locale locale)
          Gets the textual value of this property from the instant as a string in the specified locale.
 DurationField getDurationField()
          Returns the duration per unit value of this field.
abstract  DateTimeField getField()
          Gets the field being used.
 DateTimeFieldType getFieldType()
          Gets the field type being used.
 int getMaximumShortTextLength(Locale locale)
          Gets the maximum short text length for the field.
 int getMaximumTextLength(Locale locale)
          Gets the maximum text length for the field.
 int getMaximumValue()
          Gets the maximum value for this field given the current field values.
 int getMaximumValueOverall()
          Gets the maximum value for the field ignoring the current time.
 int getMinimumValue()
          Gets the minimum value for this field given the current field values.
 int getMinimumValueOverall()
          Gets the minimum value for the field ignoring the current time.
 String getName()
          Gets the name of the field.
 DurationField getRangeDurationField()
          Returns the range duration of this field.
protected abstract  ReadablePartial getReadablePartial()
          Gets the partial instant being used.
 int hashCode()
          Gets a suitable hashcode for the object.
 String toString()
          Output a debugging string.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

AbstractPartialFieldProperty

protected AbstractPartialFieldProperty()
Constructor.

Method Detail

getField

public abstract DateTimeField getField()
Gets the field being used.

Returns:
the field

getFieldType

public DateTimeFieldType getFieldType()
Gets the field type being used.

Returns:
the field type

getName

public String getName()
Gets the name of the field.

Returns:
the field name

getReadablePartial

protected abstract ReadablePartial getReadablePartial()
Gets the partial instant being used.

Returns:
the partial instant

get

public abstract int get()
Gets the value of this property from the instant.

For example, the following two lines of code are equivalent:

 partial.getDayOfMonth();
 partial.dayOfMonth().get();
 

Returns:
the current value

getAsString

public String getAsString()
Gets the value of this property from the instant as a string.

This method returns the value converted to a String using Integer.toString. This method does NOT return textual descriptions such as 'Monday' or 'January'. See getAsText() and getAsShortText() for those.

Returns:
the current value
Since:
1.1
See Also:
DateTimeField.get(long)

getAsText

public String getAsText()
Gets the textual value of this property from the instant as a string in the default locale.

This method returns the value converted to a String returning the appropriate textual description wherever possible. Thus, a day of week of 1 would return 'Monday' in English.

Returns:
the current text value
See Also:
DateTimeField.getAsText(long, java.util.Locale)

getAsText

public String getAsText(Locale locale)
Gets the textual value of this property from the instant as a string in the specified locale.

This method returns the value converted to a String returning the appropriate textual description wherever possible. Thus, a day of week of 1 would return 'Monday' in English.

Parameters:
locale - locale to use for selecting a text symbol, null means default
Returns:
the current text value
See Also:
DateTimeField.getAsText(long, java.util.Locale)

getAsShortText

public String getAsShortText()
Gets the short textual value of this property from the instant as a string in the default locale.

This method returns the value converted to a String returning the appropriate textual description wherever possible. Thus, a day of week of 1 would return 'Mon' in English.

Returns:
the current text value
See Also:
DateTimeField.getAsShortText(long, java.util.Locale)

getAsShortText

public String getAsShortText(Locale locale)
Gets the short textual value of this property from the instant as a string in the specified locale.

This method returns the value converted to a String returning the appropriate textual description wherever possible. Thus, a day of week of 1 would return 'Mon' in English.

Parameters:
locale - locale to use for selecting a text symbol, null means default
Returns:
the current text value
See Also:
DateTimeField.getAsShortText(long, java.util.Locale)

getDurationField

public DurationField getDurationField()
Returns the duration per unit value of this field. For example, if this field represents "hour of day", then the duration is an hour.

Returns:
the duration of this field, or UnsupportedDurationField

getRangeDurationField

public DurationField getRangeDurationField()
Returns the range duration of this field. For example, if this field represents "hour of day", then the range duration is a day.

Returns:
the range duration of this field, or null if field has no range

getMinimumValueOverall

public int getMinimumValueOverall()
Gets the minimum value for the field ignoring the current time.

Returns:
the minimum value
See Also:
DateTimeField.getMinimumValue()

getMinimumValue

public int getMinimumValue()
Gets the minimum value for this field given the current field values.

Returns:
the minimum value
See Also:
DateTimeField.getMinimumValue()

getMaximumValueOverall

public int getMaximumValueOverall()
Gets the maximum value for the field ignoring the current time.

Returns:
the maximum value
See Also:
DateTimeField.getMaximumValue()

getMaximumValue

public int getMaximumValue()
Gets the maximum value for this field given the current field values.

Returns:
the maximum value
See Also:
DateTimeField.getMaximumValue()

getMaximumTextLength

public int getMaximumTextLength(Locale locale)
Gets the maximum text length for the field.

Parameters:
locale - optional locale to use for selecting a text symbol
Returns:
the maximum length
See Also:
DateTimeField.getMaximumTextLength(java.util.Locale)

getMaximumShortTextLength

public int getMaximumShortTextLength(Locale locale)
Gets the maximum short text length for the field.

Parameters:
locale - optional locale to use for selecting a text symbol
Returns:
the maximum length
See Also:
DateTimeField.getMaximumShortTextLength(java.util.Locale)

compareTo

public int compareTo(ReadableInstant instant)
Compare this field to the same field on another instant.

The comparison is based on the value of the same field type, irrespective of any difference in chronology. Thus, if this property represents the hourOfDay field, then the hourOfDay field of the other instant will be queried whether in the same chronology or not.

Parameters:
instant - the instant to compare to
Returns:
negative value if this is less, 0 if equal, or positive value if greater
Throws:
IllegalArgumentException - if the instant is null or the instant doesn't support the field of this property

compareTo

public int compareTo(ReadablePartial partial)
Compare this field to the same field on another partial instant.

The comparison is based on the value of the same field type, irrespective of any difference in chronology. Thus, if this property represents the hourOfDay field, then the hourOfDay field of the other partial will be queried whether in the same chronology or not.

Parameters:
partial - the partial to compare to
Returns:
negative value if this is less, 0 if equal, or positive value if greater
Throws:
IllegalArgumentException - if the instant is null
IllegalArgumentException - if the field of this property cannot be queried on the specified instant

equals

public boolean equals(Object object)
Compares this property to another.

Overrides:
equals in class Object
Parameters:
object - the object to compare to
Returns:
true if equal

hashCode

public int hashCode()
Gets a suitable hashcode for the object.

Overrides:
hashCode in class Object
Returns:
the hashcode
Since:
1.3

toString

public String toString()
Output a debugging string.

Overrides:
toString in class Object
Returns:
debugging string


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