Module org.eclipse.persistence.pgsql

Package org.eclipse.persistence.pgsql

Class PostgreSQL10JsonPlatform

java.lang.Object

org.eclipse.persistence.json.JsonPlatform

org.eclipse.persistence.pgsql.PostgreSQL10JsonPlatform

All Implemented Interfaces:

DatabaseJsonPlatform, PostgreSQL10Platform.PostgreSQL10JsonExtension

public class PostgreSQL10JsonPlatform
extends JsonPlatform
implements PostgreSQL10Platform.PostgreSQL10JsonExtension

PostgreSQL 10 JSON database platform.

Constructor Summary

Constructors

Constructor	Description
PostgreSQL10JsonPlatform()

Method Summary

Modifier and Type	Method	Description
<T> T	convertJsonValueToDataValue(JsonValue jsonValue)	INTERNAL: Convert JSON value field to JDBC statement type.
<T> T	getJsonDataFromResultSet(ResultSet resultSet, int columnNumber, Class<T> type)	Retrieve JSON data from JDBC ResultSet.
boolean	isPgObjectInstance(Object parameter)	Check whether provided instance is an instance of PGobject.
void	updateClassTypes(Map<String,Class<?>> classTypeMapping)	Update the mapping of Postgres 10 database types to class types for the schema framework.
void	updateFieldTypes(Hashtable<Class<?>,FieldTypeDefinition> fieldTypeMapping)	Update the mapping of JSON class types to Postgres 10 database types for the schema framework.

Methods inherited from class org.eclipse.persistence.json.JsonPlatform

convertDataValueToJsonValue, isJsonType

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, unwrap

Constructor Details

PostgreSQL10JsonPlatform

public PostgreSQL10JsonPlatform()

Method Details

updateClassTypes

public void updateClassTypes(Map<String,Class<?>> classTypeMapping)

Update the mapping of Postgres 10 database types to class types for the schema framework.

Specified by:

updateClassTypes in interface DatabaseJsonPlatform

Parameters:

classTypeMapping - Map with mappings to be updated.

updateFieldTypes

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

Update the mapping of JSON class types to Postgres 10 database types for the schema framework.

Specified by:

updateFieldTypes in interface DatabaseJsonPlatform

Overrides:

updateFieldTypes in class JsonPlatform

Parameters:

fieldTypeMapping - Map with mappings to be updated.

convertJsonValueToDataValue

public <T> T convertJsonValueToDataValue(JsonValue jsonValue)
                                  throws PersistenceException

INTERNAL: Convert JSON value field to JDBC statement type. Postgres JSON storage type is JSONB and target Java type is PGobject.

Overrides:

convertJsonValueToDataValue in class JsonPlatform

Type Parameters:

T - classification type

Parameters:

jsonValue - source JSON value field

Returns:

converted JDBC statement type

Throws:

PersistenceException

getJsonDataFromResultSet

public <T> T getJsonDataFromResultSet(ResultSet resultSet,
 int columnNumber,
 Class<T> type)
                               throws SQLException

Retrieve JSON data from JDBC ResultSet. JSON data retrieved from Postgres JDBC ResultSet are returned as PGobject instance. It must be converted to String first to be accepted by common JsonTypeConverter.

Specified by:

getJsonDataFromResultSet in interface DatabaseJsonPlatform

Type Parameters:

T - target type to return

Parameters:

resultSet - source JDBC ResultSet

columnNumber - index of column in JDBC ResultSet

type - target class to return, this class will be used to cast returned value

Returns:

JSON data from JDBC ResultSet as String to be parsed by common JsonTypeConverter

Throws:

SQLException - if data could not be retrieved

isPgObjectInstance

public boolean isPgObjectInstance(Object parameter)

Check whether provided instance is an instance of PGobject.

Specified by:

isPgObjectInstance in interface PostgreSQL10Platform.PostgreSQL10JsonExtension

Parameters:

parameter - an instance to check

Returns:

value of true when provided instance is an instance of PGobject or false otherwise