Package org.nuxeo.ecm.core.storage.sql

Class SimpleFragment

java.lang.Object

org.nuxeo.ecm.core.storage.sql.Fragment

org.nuxeo.ecm.core.storage.sql.SimpleFragment

All Implemented Interfaces:

Serializable

public final class SimpleFragment
extends Fragment

A type of fragment corresponding to a single row in a table and its associated in-memory information (state, dirty fields, attached context).

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SimpleFragment.FieldComparator	Comparator of SimpleFragments according to a field.

Nested classes/interfaces inherited from class org.nuxeo.ecm.core.storage.sql.Fragment

Fragment.State

Field Summary

Fields

Modifier and Type	Field	Description
static SimpleFragment	UNKNOWN

Fields inherited from class org.nuxeo.ecm.core.storage.sql.Fragment

context, oldvalues, row

Constructor Summary

Constructors

Constructor	Description
SimpleFragment(Row row, Fragment.State state, PersistenceContext context)	Constructs a SimpleFragment from a Row.

Method Summary

Modifier and Type	Method	Description
Serializable	get(String key)	Gets a value by key.
List<String>	getDirtyKeys()	Gets the dirty keys (keys of values changed since last clear).
RowMapper.RowUpdate	getRowUpdate()	Returns the row update to do in the database to write this value.
String	getString(String key)	Returns a String value.
void	put(String key, Serializable value)	Puts a value by key.
protected Fragment.State	refetch()	Refetches this fragment from the database.
protected Fragment.State	refetchDeleted()	Resets the data for a fragment that was invalidated by deletion.

Methods inherited from class org.nuxeo.ecm.core.storage.sql.Fragment

accessed, clearDirty, getId, getState, markModified, setDeleted, setDetached, setId, setInvalidatedDeleted, setInvalidatedModified, setPristine, toString

Methods inherited from class java.lang.Object

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

Field Detail

UNKNOWN

public static final SimpleFragment UNKNOWN

Constructor Detail

SimpleFragment

public SimpleFragment(Row row,
                      Fragment.State state,
                      PersistenceContext context)

Constructs a SimpleFragment from a Row.

Parameters:

row - the row, or null

state - the initial state for the fragment

context - the persistence context to which the fragment is tied, or null

Method Detail

refetch

protected Fragment.State refetch()

Description copied from class: Fragment

Refetches this fragment from the database. Needed when an invalidation has been received and the fragment is accessed again.

Specified by:

refetch in class Fragment

Returns:

the new state, Fragment.State.PRISTINE or Fragment.State.ABSENT

refetchDeleted

protected Fragment.State refetchDeleted()

Description copied from class: Fragment

Resets the data for a fragment that was invalidated by deletion.

Specified by:

refetchDeleted in class Fragment

Returns:

the new state, Fragment.State.PRISTINE or Fragment.State.ABSENT

get

public Serializable get(String key)

Gets a value by key.

Parameters:

key - the key

Returns:

the value

put

public void put(String key,
                Serializable value)

Puts a value by key.

Parameters:

key - the key

value - the value

getString

public String getString(String key)

Returns a String value.

Parameters:

key - the key

Returns:

the value as a String

Throws:

ClassCastException - if the value is not a String

getRowUpdate

public RowMapper.RowUpdate getRowUpdate()

Description copied from class: Fragment

Returns the row update to do in the database to write this value.

Specified by:

getRowUpdate in class Fragment

Returns:

a row update, or null if the value is unchanged since last clear

getDirtyKeys

public List<String> getDirtyKeys()

Gets the dirty keys (keys of values changed since last clear).

Returns:

the dirty keys