public abstract class EditCommand<T> extends Object
When two objects sequences are compared through the
the result is provided has a
script containing the commands
that progressively transform the first sequence into the second one.
There are only three types of commands, all of which are subclasses of this
abstract class. Each command is associated with one object belonging to at
least one of the sequences. These commands are
InsertCommand which correspond to an object of the second sequence being
inserted into the first sequence,
correspond to an object of the first sequence being removed and
KeepCommand which correspond to an object of the first
equals an object in the second sequence. It is
guaranteed that comparison is always performed this way (i.e. the
equals method of the object from the first sequence is used and
the object passed as an argument comes from the second sequence) ; this can
be important if subclassing is used for some elements in the first sequence
equals method is specialized.
|Modifier||Constructor and Description|
|Modifier and Type||Method and Description|
Accept a visitor.
Returns the object associated with this command.
protected EditCommand(T object)
object- reference to the object associated with this command, this refers to an element of one of the sequences being compared
protected T getObject()
public abstract void accept(CommandVisitor<T> visitor)
This method is invoked for each commands belonging to
EditScript, in order to implement the visitor design pattern
visitor- the visitor to be accepted
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