jakarta.nosql.mapping

Enum DatabaseType

java.lang.Object

java.lang.Enum<DatabaseType>

jakarta.nosql.mapping.DatabaseType

All Implemented Interfaces:

Serializable, Comparable<DatabaseType>

public enum DatabaseType
extends Enum<DatabaseType>

Defines the database type supported on Jakarta NoSQL Mapping.

Enum Constant Summary

Enum Constants

Enum Constant and Description
COLUMN A wide column store is a type of NoSQL database.
DOCUMENT A document database is a type of nonrelational database that is designed to store semistructured data as documents.
GRAPH In computing, a graph database (GDB[1]) is a database that uses graph structures for semantic queries with nodes, edges and properties to represent and store data.
KEY_VALUE A key-value database, or key-value store, is a data storage paradigm designed for storing, retrieving, and managing associative arrays, a data structure more commonly known today as a dictionary or hash table.
SHARED That is not a NoSQL type; it defines resources shared among the NoSQL types.

Method Summary

Modifier and Type	Method and Description
static DatabaseType	valueOf(String name) Returns the enum constant of this type with the specified name.
static DatabaseType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DOCUMENT

public static final DatabaseType DOCUMENT

A document database is a type of nonrelational database that is designed to store semistructured data as documents. Document databases are intuitive for developers to use because the data in the application tier is typically represented as a JSON document.

COLUMN

public static final DatabaseType COLUMN

A wide column store is a type of NoSQL database. It uses tables, rows, and columns, but unlike a relational database, the names and format of the columns can vary from row to row in the same table.

KEY_VALUE

public static final DatabaseType KEY_VALUE

A key-value database, or key-value store, is a data storage paradigm designed for storing, retrieving, and managing associative arrays, a data structure more commonly known today as a dictionary or hash table. Dictionaries contain a collection of objects, or records, which in turn have many different fields within them, each containing data. These records are stored and retrieved using a key that uniquely identifies the record, and is used to quickly find the data within the database.

GRAPH

public static final DatabaseType GRAPH

In computing, a graph database (GDB[1]) is a database that uses graph structures for semantic queries with nodes, edges and properties to represent and store data. A key concept of the system is the graph (or edge or relationship), which directly relates data items in the store a collection of nodes of data and edges representing the relationships between the nodes. The relationships allow data in the store to be linked together directly, and in many cases retrieved with one operation. Graph databases hold the relationships between data as a priority. Querying relationships within a graph database is fast because they are perpetually stored within the database itself. Relationships can be intuitively visualized using graph databases, making it useful for heavily inter-connected data.

SHARED

public static final DatabaseType SHARED

That is not a NoSQL type; it defines resources shared among the NoSQL types.

Method Detail

values

public static DatabaseType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DatabaseType c : DatabaseType.values())
    System.out.println(c);

Returns:

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

valueOf

public static DatabaseType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null