org.joda.time.convert
Class AbstractConverter

java.lang.Object
  extended by org.joda.time.convert.AbstractConverter
All Implemented Interfaces:
Converter

public abstract class AbstractConverter
extends Object
implements Converter

AbstractConverter simplifies the process of implementing a converter.

Since:
1.0
Author:
Stephen Colebourne

Constructor Summary
protected AbstractConverter()
          Restricted constructor.
 
Method Summary
 Chronology getChronology(Object object, Chronology chrono)
          Extracts the chronology from an object of this convertor's type where the chronology is specified.
 Chronology getChronology(Object object, DateTimeZone zone)
          Extracts the chronology from an object of this convertor's type where the time zone is specified.
 long getInstantMillis(Object object, Chronology chrono)
          Extracts the millis from an object of this convertor's type.
 int[] getPartialValues(ReadablePartial fieldSource, Object object, Chronology chrono)
          Extracts the values of the partial from an object of this converter's type.
 int[] getPartialValues(ReadablePartial fieldSource, Object object, Chronology chrono, DateTimeFormatter parser)
          Extracts the values of the partial from an object of this converter's type.
 PeriodType getPeriodType(Object object)
          Selects a suitable period type for the given object.
 boolean isReadableInterval(Object object, Chronology chrono)
          Checks if the input is a ReadableInterval.
 String toString()
          Gets a debugging string version of this converter.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.joda.time.convert.Converter
getSupportedType
 

Constructor Detail

AbstractConverter

protected AbstractConverter()
Restricted constructor.

Method Detail

getInstantMillis

public long getInstantMillis(Object object,
                             Chronology chrono)
Extracts the millis from an object of this convertor's type.

This implementation returns the current time.

Parameters:
object - the object to convert
chrono - the chronology to use, which is always non-null
Returns:
the millisecond value

getChronology

public Chronology getChronology(Object object,
                                DateTimeZone zone)
Extracts the chronology from an object of this convertor's type where the time zone is specified.

This implementation returns the ISO chronology.

Parameters:
object - the object to convert
zone - the specified zone to use, null means default zone
Returns:
the chronology, never null

getChronology

public Chronology getChronology(Object object,
                                Chronology chrono)
Extracts the chronology from an object of this convertor's type where the chronology is specified.

This implementation returns the chronology specified, or the ISO chronology in the default zone if null passed in.

Parameters:
object - the object to convert
chrono - the chronology to use, null means ISO default
Returns:
the chronology, never null

getPartialValues

public int[] getPartialValues(ReadablePartial fieldSource,
                              Object object,
                              Chronology chrono)
Extracts the values of the partial from an object of this converter's type. The chrono parameter is a hint to the converter, should it require a chronology to aid in conversion.

This implementation calls getInstantMillis(Object, Chronology).

Parameters:
fieldSource - a partial that provides access to the fields. This partial may be incomplete and only getFieldType(int) should be used
object - the object to convert
chrono - the chronology to use, which is the non-null result of getChronology()
Returns:
the array of field values that match the fieldSource, must be non-null valid
Throws:
ClassCastException - if the object is invalid

getPartialValues

public int[] getPartialValues(ReadablePartial fieldSource,
                              Object object,
                              Chronology chrono,
                              DateTimeFormatter parser)
Extracts the values of the partial from an object of this converter's type. The chrono parameter is a hint to the converter, should it require a chronology to aid in conversion.

This implementation calls getPartialValues(ReadablePartial, Object, Chronology).

Parameters:
fieldSource - a partial that provides access to the fields. This partial may be incomplete and only getFieldType(int) should be used
object - the object to convert
chrono - the chronology to use, which is the non-null result of getChronology()
parser - if converting from a String, the given parser is preferred
Returns:
the array of field values that match the fieldSource, must be non-null valid
Throws:
ClassCastException - if the object is invalid
Since:
1.3

getPeriodType

public PeriodType getPeriodType(Object object)
Selects a suitable period type for the given object.

Parameters:
object - the object to examine
Returns:
the period type, never null

isReadableInterval

public boolean isReadableInterval(Object object,
                                  Chronology chrono)
Checks if the input is a ReadableInterval.

If it is, then the calling code should cast and copy the fields directly.

Parameters:
object - the object to convert
chrono - the chronology to use, may be null
Returns:
true if the input is a ReadableInterval

toString

public String toString()
Gets a debugging string version of this converter.

Overrides:
toString in class Object
Returns:
a debugging string


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