Added support for Json type in sqlServe and Oracle #441
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A json string can be stored in the database table.
JsonType added to ExtendedTypeMap in OracleAdapter and SybaseAdapter.
SQLServerTreeProcessor and OracleSQLTreeProcessor extends from TypeAwareSQLTreeProcessor. Added three types Json, GeoJson, Wkt to byNodeTypeProcessors.
In SQL Server:
Create a column with the NVARCHAR type in the table. Then we import the database in the modeler. Automatically the obj-attribute type will be String. In the obj-attribute, specify the type org.apache.cayenne.value.Json.
In Oracle SQL:
Create a column with the CLOB type in the table. Then we import the database in the modeler. Automatically the obj-attribute type will be String. In the obj-attribute, specify the type org.apache.cayenne.value.Json.