Module org.eclipse.persistence.json

Package org.eclipse.persistence.json

Class JsonTypeConverter

java.lang.Object

org.eclipse.persistence.json.JsonTypeConverter

All Implemented Interfaces:

Serializable, CoreConverter<DatabaseMapping,Session>, Converter

public class JsonTypeConverter
extends Object
implements Converter

Default JSON field value to JDBC data type converter.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
JsonTypeConverter()	Creates an instance of default JSON field value to JDBC data type converter.

Method Summary

Modifier and Type	Method	Description
Object	convertDataValueToObjectValue(Object jdbcValue, Session session)	Converts String from JDBC VARCHAR parameter to JSON field value.
Object	convertObjectValueToDataValue(Object jsonValue, Session session)	Converts JSON field value to String.
void	initialize(DatabaseMapping mapping, Session session)	Initialize mapping for JDBC data type.
boolean	isMutable()	JSON values and String are immutable.

Methods inherited from class java.lang.Object

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

Constructor Details

JsonTypeConverter

public JsonTypeConverter()

Creates an instance of default JSON field value to JDBC data type converter.

Method Details

convertObjectValueToDataValue

public Object convertObjectValueToDataValue(Object jsonValue,
 Session session)

Converts JSON field value to String.

Specified by:

convertObjectValueToDataValue in interface Converter

Specified by:

convertObjectValueToDataValue in interface CoreConverter<DatabaseMapping,Session>

Parameters:

jsonValue - source JSON field value

session - current database session

Returns:

target String to be stored as JDBC VARCHAR

convertDataValueToObjectValue

public Object convertDataValueToObjectValue(Object jdbcValue,
 Session session)

Converts String from JDBC VARCHAR parameter to JSON field value.

Specified by:

convertDataValueToObjectValue in interface Converter

Specified by:

convertDataValueToObjectValue in interface CoreConverter<DatabaseMapping,Session>

Parameters:

jdbcValue - source String from JDBC VARCHAR

session - current database session

Returns:

target JSON field value

isMutable

public boolean isMutable()

JSON values and String are immutable.

Specified by:

isMutable in interface Converter

Returns:

value of false

initialize

public void initialize(DatabaseMapping mapping,
 Session session)

Initialize mapping for JDBC data type.

Specified by:

initialize in interface Converter

Specified by:

initialize in interface CoreConverter<DatabaseMapping,Session>

Parameters:

mapping - field database mapping

session - current database session