org.odpi.openmetadata.accessservices.analyticsmodeling.assets

Class DatabaseContextHandler

java.lang.Object

org.odpi.openmetadata.accessservices.analyticsmodeling.assets.DatabaseContextHandler

public class DatabaseContextHandler
extends Object

The class builds data content of the Analytics Modeling OMAS responses.
This class contains logic about elements required to build responses and their relationships. Only methods used to build responses should be public.

Here is the exposed functionality:

• Get databases getDatabases(java.lang.Integer, java.lang.Integer)
• Get database schemas getSchemaTables(java.lang.String, java.lang.String)
• Get schema tables getSchemaTables(java.lang.String, java.lang.String)
• Get physical module getModule(java.lang.String, java.lang.String, java.lang.String)

Database metadata is retrieved from OMRS using object of type OMEntityDao
All repository logic should be handled there.

Constructor Summary

Constructors

Constructor and Description
DatabaseContextHandler(OMEntityDao omEntityDao)

Method Summary

Modifier and Type	Method and Description
List<ResponseContainerDatabase>	getDatabases(Integer startFrom, Integer pageSize) Get list of databases on the server.
List<ResponseContainerDatabaseSchema>	getDatabaseSchemas(String guidDataSource, Integer startFrom, Integer pageSize) Retrieve schemas for given database from repository.
ResponseContainerModule	getModule(String databaseGuid, String catalog, String schema) Build Analytics Modeling module for database schema
ResponseContainerSchemaTables	getSchemaTables(String guidDataSource, String schema) Get tables for schema.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseContextHandler

public DatabaseContextHandler(OMEntityDao omEntityDao)

Method Detail

getDatabases

public List<ResponseContainerDatabase> getDatabases(Integer startFrom,
                                                    Integer pageSize)
                                             throws AnalyticsModelingCheckedException

Get list of databases on the server.

Parameters:

startFrom - starting element (used in paging through large result sets)

pageSize - maximum number of results to return

Returns:

list of database descriptors.

Throws:

AnalyticsModelingCheckedException - in case of an repository operation failure.

getDatabaseSchemas

public List<ResponseContainerDatabaseSchema> getDatabaseSchemas(String guidDataSource,
                                                                Integer startFrom,
                                                                Integer pageSize)
                                                         throws AnalyticsModelingCheckedException

Retrieve schemas for given database from repository.

Parameters:

guidDataSource - defines database

startFrom - starting element (used in paging through large result sets)

pageSize - maximum number of results to return

Returns:

list of schemas attributes.

Throws:

AnalyticsModelingCheckedException - in case of an repository operation failure.

getSchemaTables

public ResponseContainerSchemaTables getSchemaTables(String guidDataSource,
                                                     String schema)
                                              throws AnalyticsModelingCheckedException

Get tables for schema.

Parameters:

guidDataSource - of the schema.

schema - name.

Returns:

list of table names.

Throws:

AnalyticsModelingCheckedException - if failed

getModule

public ResponseContainerModule getModule(String databaseGuid,
                                         String catalog,
                                         String schema)
                                  throws AnalyticsModelingCheckedException

Build Analytics Modeling module for database schema

Parameters:

databaseGuid - of the module

catalog - of the module

schema - of the module

Returns:

module built for defined schema

Throws:

AnalyticsModelingCheckedException - in case of an repository operation failure.