Package org.gcube.informationsystem.resourceregistry.persistence

Enum Class Operation

java.lang.Object

java.lang.Enum<Operation>

org.gcube.informationsystem.resourceregistry.persistence.Operation

All Implemented Interfaces:

Serializable, Comparable<Operation>, Constable

public enum Operation
extends Enum<Operation>

Identifies the kind of action a persistence-layer management class is currently performing on an element (Context, Type, or Instance), independently of which concrete class or collection is involved. Database-agnostic and carries no OrientDB-specific concept; each constant also reports whether it is a read-only (isSafe()) operation.

Author:

Luca Frosini (ISTI - CNR)

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ADD_TO_CONTEXT	The add to context/share operation.
CREATE	The database element creation operation.
DELETE	The deletion operation.
EXISTS	The check existence operation (read-only).
GET_METADATA	The metadata retrieval operation (read-only).
QUERY	The graph traversal query operation (read-only).
READ	The read operation (read-only).
REMOVE_FROM_CONTEXT	The remove from context/unshare operation.
UPDATE	The update operation.

Method Summary

Modifier and Type	Method	Description
boolean	isSafe()	Returns whether this is a read-only/safe operation.
static Operation	valueOf(String name)	Returns the enum constant of this class with the specified name.
static Operation[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

CREATE

public static final Operation CREATE

The database element creation operation.

EXISTS

public static final Operation EXISTS

The check existence operation (read-only).

READ

public static final Operation READ

The read operation (read-only).

UPDATE

public static final Operation UPDATE

The update operation.

DELETE

public static final Operation DELETE

The deletion operation.

ADD_TO_CONTEXT

public static final Operation ADD_TO_CONTEXT

The add to context/share operation.

REMOVE_FROM_CONTEXT

public static final Operation REMOVE_FROM_CONTEXT

The remove from context/unshare operation.

QUERY

public static final Operation QUERY

The graph traversal query operation (read-only).

GET_METADATA

public static final Operation GET_METADATA

The metadata retrieval operation (read-only).

Method Details

values

public static Operation[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static Operation valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

isSafe

public boolean isSafe()

Returns whether this is a read-only/safe operation.

Returns:

true if this operation is safe/read-only, false otherwise