org.odpi.openmetadata.commonservices.generichandlers

Class LikeHandler<B>

java.lang.Object

org.odpi.openmetadata.commonservices.generichandlers.OpenMetadataAPIGenericHandler<B>

org.odpi.openmetadata.commonservices.generichandlers.LikeHandler<B>

public class LikeHandler<B>
extends OpenMetadataAPIGenericHandler<B>

LikeHandler provides access and maintenance for Like objects and their attachment to Referenceables.

Field Summary

Fields inherited from class org.odpi.openmetadata.commonservices.generichandlers.OpenMetadataAPIGenericHandler

auditLog, beanClass, converter, defaultZones, errorHandler, invalidParameterHandler, localServerUserId, publishZones, repositoryHandler, repositoryHelper, securityVerifier, serverName, serviceName, supportedZones

Constructor Summary

Constructors

Constructor and Description

LikeHandler(OpenMetadataAPIGenericConverter<B> converter, Class<B> beanClass, String serviceName, String serverName, InvalidParameterHandler invalidParameterHandler, RepositoryHandler repositoryHandler, OMRSRepositoryHelper repositoryHelper, String localServerUserId, OpenMetadataServerSecurityVerifier securityVerifier, List<String> supportedZones, List<String> defaultZones, List<String> publishZones, AuditLog auditLog) Construct the handler for likes.

Method Summary

Modifier and Type	Method and Description
int	countLikes(String userId, String elementGUID, String methodName) Count the number of Likes attached to an anchor entity.
List<B>	getLikes(String userId, String elementGUID, String elementGUIDParameterName, String elementTypeName, List<String> serviceSupportedZones, int startingFrom, int pageSize, String methodName) Return the Likes attached to an entity.
void	removeLike(String userId, String externalSourceGUID, String externalSourceName, String elementGUID, String elementGUIDParameterName, String methodName) Remove the requested like.
String	saveLike(String userId, String externalSourceGUID, String externalSourceName, String elementGUID, String elementGUIDParameterName, boolean isPublic, String methodName) Add or replace and existing Like for this user.

Methods inherited from class org.odpi.openmetadata.commonservices.generichandlers.OpenMetadataAPIGenericHandler

countAttachments, createBeanFromTemplate, createBeanInRepository, deleteBeanInRepository, deleteBeanInRepository, findBeanGUIDs, findBeans, findBeans, findBeans, findEntities, getAllAttachmentLinks, getAnchorsForAttachedElements, getAttachedElement, getAttachedElement, getAttachedElementGUID, getAttachedElementGUID, getAttachedElementGUIDs, getAttachedElementGUIDs, getAttachedElements, getAttachedElements, getAttachedElements, getAttachedElements, getAttachedEntities, getAttachedEntities, getAttachedEntity, getAttachedEntity, getAttachmentLinks, getAttachmentLinks, getBeanByUniqueName, getBeanByUniqueName, getBeanByValue, getBeanFromRepository, getBeanFromRepository, getBeanGUIDByUniqueName, getBeanGUIDsByClassification, getBeanGUIDsByType, getBeanGUIDsByType, getBeanGUIDsByValue, getBeansByClassification, getBeansByCreator, getBeansByType, getBeansByType, getBeansByValue, getBeansByValue, getBeansByValue, getBeansByValue, getEntitiesByType, getEntitiesByValue, getEntitiesByValue, getEntityByValue, getEntityFromRepository, getEntityFromRepository, getEntityFromRepository, getEntityGUIDByValue, getRepositoryHelper, getServiceName, getUniqueAttachmentLink, linkElementToElement, linkElementToElement, relinkElementToNewElement, relinkElementToNewElement, setSecurityVerifier, unlinkAllElements, unlinkConnectedElement, unlinkElementFromElement, unlinkElementFromElement, updateBeanInRepository, updateBeanInRepository, updateBeanPropertyInRepository, updateBeanStatusInRepository, validateAnchorEntity, validateAnchorEntity, verifyExternalSourceIdentity

Methods inherited from class java.lang.Object

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

Constructor Detail

LikeHandler

public LikeHandler(OpenMetadataAPIGenericConverter<B> converter,
                   Class<B> beanClass,
                   String serviceName,
                   String serverName,
                   InvalidParameterHandler invalidParameterHandler,
                   RepositoryHandler repositoryHandler,
                   OMRSRepositoryHelper repositoryHelper,
                   String localServerUserId,
                   OpenMetadataServerSecurityVerifier securityVerifier,
                   List<String> supportedZones,
                   List<String> defaultZones,
                   List<String> publishZones,
                   AuditLog auditLog)

Construct the handler for likes.

Parameters:

converter - specific converter for this bean class

beanClass - name of bean class that is represented by the generic class B

serviceName - name of this service

serverName - name of the local server

invalidParameterHandler - handler for managing parameter errors

repositoryHandler - manages calls to the repository services

repositoryHelper - provides utilities for manipulating the repository services objects

localServerUserId - userId for this server

securityVerifier - open metadata security services verifier

supportedZones - list of zones that the access service is allowed to serve Asset instances from.

defaultZones - list of zones that the access service should set in all new Asset instances.

publishZones - list of zones that the access service sets up in published Asset instances.

auditLog - destination for audit log events.

Method Detail

countLikes

public int countLikes(String userId,
                      String elementGUID,
                      String methodName)
               throws InvalidParameterException,
                      PropertyServerException,
                      UserNotAuthorizedException

Count the number of Likes attached to an anchor entity.

Parameters:

userId - calling user

elementGUID - identifier for the entity that the object is attached to

methodName - calling method

Returns:

unique identifier of the object or null

Throws:

InvalidParameterException - the parameters are invalid

UserNotAuthorizedException - user not authorized to issue this request

PropertyServerException - problem accessing the property server

getLikes

public List<B> getLikes(String userId,
                        String elementGUID,
                        String elementGUIDParameterName,
                        String elementTypeName,
                        List<String> serviceSupportedZones,
                        int startingFrom,
                        int pageSize,
                        String methodName)
                 throws InvalidParameterException,
                        PropertyServerException,
                        UserNotAuthorizedException

Return the Likes attached to an entity.

Parameters:

userId - calling user

elementGUID - identifier for the entity that the feedback is attached to

elementGUIDParameterName - name of parameter supplying the element guid

elementTypeName - name of type for the element

serviceSupportedZones - serviceSupportedZones

startingFrom - where to start from in the list

pageSize - maximum number of results that can be returned

methodName - calling method

Returns:

list of retrieved objects or null if none found

Throws:

InvalidParameterException - the input properties are invalid

UserNotAuthorizedException - user not authorized to issue this request

PropertyServerException - problem accessing the property server

saveLike

public String saveLike(String userId,
                       String externalSourceGUID,
                       String externalSourceName,
                       String elementGUID,
                       String elementGUIDParameterName,
                       boolean isPublic,
                       String methodName)
                throws InvalidParameterException,
                       PropertyServerException,
                       UserNotAuthorizedException

Add or replace and existing Like for this user.

Parameters:

userId - userId of user making request.

externalSourceGUID - guid of the software server capability entity that represented the external source - null for local

externalSourceName - name of the software server capability entity that represented the external source

elementGUID - unique identifier for the liked entity (Referenceable).

elementGUIDParameterName - parameter supplying the elementGUID

isPublic - indicates whether the feedback should be shared or only be visible to the originating user

methodName - calling method

Returns:

unique identifier of the new Like entity

Throws:

InvalidParameterException - the endpoint bean properties are invalid

UserNotAuthorizedException - user not authorized to issue this request

PropertyServerException - problem accessing the property server

removeLike

public void removeLike(String userId,
                       String externalSourceGUID,
                       String externalSourceName,
                       String elementGUID,
                       String elementGUIDParameterName,
                       String methodName)
                throws InvalidParameterException,
                       PropertyServerException,
                       UserNotAuthorizedException

Remove the requested like.

Parameters:

userId - calling user

externalSourceGUID - guid of the software server capability entity that represented the external source - null for local

externalSourceName - name of the software server capability entity that represented the external source

elementGUID - object where rating is attached

elementGUIDParameterName - parameter supplying the elementGUID

methodName - calling method

Throws:

InvalidParameterException - the entity guid is not known

UserNotAuthorizedException - user not authorized to issue this request

PropertyServerException - problem accessing the property server