ewe.database
Class EntryComparer

java.lang.Object
  ewe.database.EntryComparer

All Implemented Interfaces:

Comparer, DatabaseEntryComparer

Direct Known Subclasses:

StandardEntryComparer

public abstract class EntryComparer

extends Object

implements DatabaseEntryComparer

Field Summary

protected boolean	compareAsDatabaseEntries If this is set true, then when compareEntries() is called the two objects will be of type DatabaseEntries.
protected Database	db

Constructor Summary

protected	EntryComparer()
	EntryComparer(Database db)

Method Summary

int	compare(Object one, Object two) This should compare the two objects and return: 0 = the objects are equal.
protected abstract int	compareEntries(Object one, Object two) Override this to compare to entries.
void	setDatabase(Database db)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, toString

Field Detail

db

protected Database db

compareAsDatabaseEntries

protected boolean compareAsDatabaseEntries

If this is set true, then when compareEntries() is called the two objects will be of type DatabaseEntries. If it is false then the entries will be converted to the Database's data object. This is false by default.

Constructor Detail

EntryComparer

protected EntryComparer()

EntryComparer

public EntryComparer(Database db)
              throws IllegalArgumentException

Method Detail

compare

public final int compare(Object one,
                         Object two)

Description copied from interface: Comparer

This should compare the two objects and return: 0 = the objects are equal. greater than 0 = one is greater than two. less than 0 = two is greater than one.

Specified by:

compare in interface Comparer

compareEntries

protected abstract int compareEntries(Object one,
                                      Object two)

Override this to compare to entries. If you are doing a findFirst() or findLast() or a search(), then the first argument will always be the searchData that you provided.

setDatabase

public void setDatabase(Database db)

Specified by:

setDatabase in interface DatabaseEntryComparer