Package jetbrains.mps.persistence

Class MementoImpl

java.lang.Object

jetbrains.mps.persistence.MementoImpl

All Implemented Interfaces:

Memento

public class MementoImpl
extends Object
implements Memento

evgeny, 11/16/12

Constructor Summary

Constructors

Constructor	Description
MementoImpl()

Method Summary

Modifier and Type	Method	Description
Memento	copy()	Returns a deep copy of the current memento and its children
Memento	createChild(String type)	Creates and registers a new child memento.
boolean	equals(Object obj)
String	get(String key)
Memento	getChild(String type)
Iterable<Memento>	getChildren()	Retrieves a point-time read-only copy of all the children mementos.
Iterable<Memento>	getChildren(String type)	Retrieves a point-time read-only copy of all the children mementos of the specified type.
Iterable<String>	getKeys()	Retrieves a read-only collection of registered property keys.
String	getText()
String	getType()	Returns the value of type for the memento.
int	hashCode()
void	put(String key, String value)
void	setText(String text)

Methods inherited from class java.lang.Object

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

Constructor Detail

MementoImpl

public MementoImpl()

Method Detail

getType

public String getType()

Description copied from interface: Memento

Returns the value of type for the memento. The value of null is returned if no type has been set.

Specified by:

getType in interface Memento

get

public String get(String key)

Specified by:

get in interface Memento

put

public void put(String key,
                String value)

Specified by:

put in interface Memento

Parameters:

key - null doesn't make sense

value - null value effectively removes the key

getKeys

public Iterable<String> getKeys()

Description copied from interface: Memento

Retrieves a read-only collection of registered property keys. Since the collection is backed by the original collection, new properties must not be added while iterating.

Specified by:

getKeys in interface Memento

getText

public String getText()

Specified by:

getText in interface Memento

setText

public void setText(String text)

Specified by:

setText in interface Memento

getChildren

public Iterable<Memento> getChildren(String type)

Description copied from interface: Memento

Retrieves a point-time read-only copy of all the children mementos of the specified type. Subsequent modifications to the original list of children of the current memento will not have any impact on the returned collection.

Specified by:

getChildren in interface Memento

getChild

public Memento getChild(String type)

Specified by:

getChild in interface Memento

getChildren

public Iterable<Memento> getChildren()

Description copied from interface: Memento

Retrieves a point-time read-only copy of all the children mementos. Subsequent modifications to the original list of children of the current memento will not have any impact on the returned collection.

Specified by:

getChildren in interface Memento

createChild

public Memento createChild(String type)

Description copied from interface: Memento

Creates and registers a new child memento.

Specified by:

createChild in interface Memento

copy

public Memento copy()

Description copied from interface: Memento

Returns a deep copy of the current memento and its children

Specified by:

copy in interface Memento

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object