java.lang.Object
- org.odpi.openmetadata.accessservices.dataengine.server.handlers.DataEngineSchemaTypeHandler

```
public class DataEngineSchemaTypeHandler
extends Object
```
DataEngineSchemaTypeHandler manages schema types objects from the property server. It runs server-side in the DataEngine OMAS and creates and retrieves schema type entities through the OMRSRepositoryConnector.

Field Summary

Fields
Modifier and Type Field Description

static String SCHEMA_TYPE_GUID_PARAMETER_NAME

Constructor Summary

Constructors
Constructor	Description
`DataEngineSchemaTypeHandler(String serviceName, String serverName, InvalidParameterHandler invalidParameterHandler, OMRSRepositoryHelper repositoryHelper, SchemaTypeHandler<SchemaType> schemaTypeHandler, DataEngineRegistrationHandler dataEngineRegistrationHandler, DataEngineCommonHandler dataEngineCommonHandler, DataEngineSchemaAttributeHandler dataEngineSchemaAttributeHandler)`	Construct the handler information needed to interact with the repository services

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addLineageMappingRelationship(String userId, String sourceQualifiedName, String targetQualifiedName, String externalSourceName)`	Create LineageMapping relationship between two entities
`Optional<EntityDetail>`	`findSchemaTypeEntity(String userId, String qualifiedName)`	Find out if the SchemaType object is already stored in the repository.
`void`	`removeSchemaType(String userId, String schemaTypeGUID, String externalSourceName, DeleteSemantic deleteSemantic)`	Remove the schema type with the associated schema attributes
`String`	`upsertSchemaType(String userId, SchemaType schemaType, String externalSourceName)`	Create the schema type entity, with the corresponding schema attributes and relationships if it doesn't exist or updates the existing one.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- SCHEMA_TYPE_GUID_PARAMETER_NAME
```
public static final String SCHEMA_TYPE_GUID_PARAMETER_NAME
```
  See Also:
  
  Constant Field Values

Constructor Detail

DataEngineSchemaTypeHandler

public DataEngineSchemaTypeHandler(String serviceName,
                                   String serverName,
                                   InvalidParameterHandler invalidParameterHandler,
                                   OMRSRepositoryHelper repositoryHelper,
                                   SchemaTypeHandler<SchemaType> schemaTypeHandler,
                                   DataEngineRegistrationHandler dataEngineRegistrationHandler,
                                   DataEngineCommonHandler dataEngineCommonHandler,
                                   DataEngineSchemaAttributeHandler dataEngineSchemaAttributeHandler)

Construct the handler information needed to interact with the repository services

Parameters:: serviceName - name of this service; serverName - name of the local server; invalidParameterHandler - handler for managing parameter errors; repositoryHelper - provides utilities for manipulating the repository services objects; schemaTypeHandler - handler for managing schema elements in the metadata repositories; dataEngineRegistrationHandler - provides calls for retrieving external data engine guid; dataEngineCommonHandler - provides utilities for manipulating entities

Method Detail

upsertSchemaType
```
public String upsertSchemaType(String userId,
                               SchemaType schemaType,
                               String externalSourceName)
                        throws InvalidParameterException,
                               PropertyServerException,
                               UserNotAuthorizedException
```
Create the schema type entity, with the corresponding schema attributes and relationships if it doesn't exist or updates the existing one.

Parameters:

userId - the name of the calling user

schemaType - the schema type values

externalSourceName - the unique name of the external source

Returns:

unique identifier of the schema type in the repository

Throws:

InvalidParameterException - the bean properties are invalid

UserNotAuthorizedException - user not authorized to issue this request

PropertyServerException - problem accessing the property server

findSchemaTypeEntity

public Optional<EntityDetail> findSchemaTypeEntity(String userId,
                                                   String qualifiedName)
                                            throws UserNotAuthorizedException,
                                                   PropertyServerException,
                                                   InvalidParameterException

Find out if the SchemaType object is already stored in the repository. It uses the fully qualified name to retrieve the entity

Parameters:: userId - the name of the calling user; qualifiedName - the qualifiedName name of the schema type to be searched
Returns:: optional with entity details if found, empty optional if not found
Throws:: InvalidParameterException - the bean properties are invalid; UserNotAuthorizedException - user not authorized to issue this request; PropertyServerException - problem accessing the property server

addLineageMappingRelationship

public void addLineageMappingRelationship(String userId,
                                          String sourceQualifiedName,
                                          String targetQualifiedName,
                                          String externalSourceName)
                                   throws InvalidParameterException,
                                          UserNotAuthorizedException,
                                          PropertyServerException

Create LineageMapping relationship between two entities

Parameters:: userId - the name of the calling user; sourceQualifiedName - the qualified name of the source entity; targetQualifiedName - the qualified name of the target entity; externalSourceName - the unique name of the external source
Throws:: InvalidParameterException - the bean properties are invalid; UserNotAuthorizedException - user not authorized to issue this request; PropertyServerException - problem accessing the property server

removeSchemaType

public void removeSchemaType(String userId,
                             String schemaTypeGUID,
                             String externalSourceName,
                             DeleteSemantic deleteSemantic)
                      throws InvalidParameterException,
                             PropertyServerException,
                             UserNotAuthorizedException,
                             FunctionNotSupportedException

Remove the schema type with the associated schema attributes

Parameters:: userId - the name of the calling user; schemaTypeGUID - the unique identifier of the schema type; externalSourceName - the external data engine; deleteSemantic - the delete semantic
Throws:: InvalidParameterException - the bean properties are invalid; UserNotAuthorizedException - user not authorized to issue this request; PropertyServerException - problem accessing the property server; FunctionNotSupportedException - the repository does not support this call.

Class DataEngineSchemaTypeHandler

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail