Module org.eclipse.persistence.json

Package org.eclipse.persistence.json

Class JsonPlatform

java.lang.Object

org.eclipse.persistence.json.JsonPlatform

All Implemented Interfaces:

DatabaseJsonPlatform

Direct Known Subclasses:

MySQLJsonPlatform, Oracle21JsonPlatform, PostgreSQL10JsonPlatform

public class JsonPlatform
extends Object
implements DatabaseJsonPlatform

Default JSON database platform.

Constructor Summary

Constructors

Constructor	Description
JsonPlatform()

Method Summary

Modifier and Type	Method	Description
JsonValue	convertDataValueToJsonValue(Object jdbcValue)	Convert JDBC ResultSet type to JSON value field.
<T> T	convertJsonValueToDataValue(JsonValue jsonValue)	INTERNAL: Convert JSON value field to JDBC statement type.
boolean	isJsonType(Type type)	Check whether provided Type instance is JSON type.
void	updateFieldTypes(Hashtable<Class<?>,FieldTypeDefinition> fieldTypeMapping)	Update the mapping of JSON class types to database types for the schema framework.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.persistence.internal.databaseaccess.DatabaseJsonPlatform

customParameterMarker, getJsonDataFromResultSet, unwrap, updateClassTypes

Constructor Details

JsonPlatform

public JsonPlatform()

Method Details

isJsonType

public boolean isJsonType(Type type)

Check whether provided Type instance is JSON type.

Specified by:

isJsonType in interface DatabaseJsonPlatform

Parameters:

type - type to be checked

Returns:

value of true when provided value is JSON type or false otherwise

updateFieldTypes

public void updateFieldTypes(Hashtable<Class<?>,FieldTypeDefinition> fieldTypeMapping)

Update the mapping of JSON class types to database types for the schema framework.

Specified by:

updateFieldTypes in interface DatabaseJsonPlatform

Parameters:

fieldTypeMapping - Map with mappings to be updated.

convertJsonValueToDataValue

public <T> T convertJsonValueToDataValue(JsonValue jsonValue)

INTERNAL: Convert JSON value field to JDBC statement type. Common JSON storage type is VARCHAR so target Java type is String.

Type Parameters:

T - classification type

Parameters:

jsonValue - source JSON value field

Returns:

converted JDBC statement type

convertDataValueToJsonValue

public JsonValue convertDataValueToJsonValue(Object jdbcValue)

Convert JDBC ResultSet type to JSON value field. This method consumes value returned by getJsonDataFromResultSet(ResultSet, int). Both methods must be overwritten by platform specific code when jdbcValue is not String.

Parameters:

jdbcValue - source classification type value from JDBC

Returns:

converted JSON field value