org.jcon.data

Class FieldTranslator

java.lang.Object

org.jcon.data.TranslatingMap

org.jcon.data.FieldTranslator

All Implemented Interfaces:

java.util.Map

public abstract class FieldTranslator
extends TranslatingMap

This is a TranslatingMap whose sole purpose is the translation of a field set (the output of fields()) for one type of Record to the corresponding field set for another type.

Version:

1.0 4/1/97

Author:

Paul Reavis

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
FieldTranslator(java.util.Map source, java.util.Map old2NewMapping, java.util.Map new2OldMapping, java.util.Map oldFields, java.util.Map newFields) Creates a new FieldTranslator.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	get(java.lang.Object key) Gets the object associated with the specified key in the Map.
protected abstract java.lang.Object	translate(FieldDef oldDef, FieldDef newDef, java.lang.Object oldElement) Subclasses should override this
protected java.lang.Object	translateElement(java.lang.Object element)
protected java.lang.Object	translateKey(java.lang.Object key)

Methods inherited from class org.jcon.data.TranslatingMap

clear, containsKey, containsValue, elements, entrySet, getSource, isEmpty, keys, keySet, put, putAll, remove, size, translateMapping, values

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

FieldTranslator

public FieldTranslator(java.util.Map source,
               java.util.Map old2NewMapping,
               java.util.Map new2OldMapping,
               java.util.Map oldFields,
               java.util.Map newFields)

Creates a new FieldTranslator.

Parameters:

source - the source fields Map

old2NewMapping - maps old field names to new field names

new2OldMapping - maps new field names to old field names

oldFields - old FieldDefs hashed by name

newFields - new FieldDefs hashed by name

Method Detail

translateKey

protected java.lang.Object translateKey(java.lang.Object key)

Overrides:

translateKey in class TranslatingMap

translateElement

protected java.lang.Object translateElement(java.lang.Object element)

Overrides:

translateElement in class TranslatingMap

get

public java.lang.Object get(java.lang.Object key)

Description copied from class: TranslatingMap

Gets the object associated with the specified key in the Map.

Specified by:

get in interface java.util.Map

Overrides:

get in class TranslatingMap

Parameters:

key - the key in the hash table

See Also:

Map.put(K, V)

translate

protected abstract java.lang.Object translate(FieldDef oldDef,
                         FieldDef newDef,
                         java.lang.Object oldElement)

Subclasses should override this