Package io.github.qubitpi.athena.example.books.application

Class SQLQueryDataFetcher

java.lang.Object

io.github.qubitpi.athena.example.books.application.SQLQueryDataFetcher

All Implemented Interfaces:

graphql.schema.DataFetcher<MetaData>

public class SQLQueryDataFetcher
extends Object
implements graphql.schema.DataFetcher<MetaData>

SQLQueryDataFetcher fetches file meta data from a SQL data storage via a DataSource.

Constructor Summary

Constructors

Constructor	Description
SQLQueryDataFetcher(@NotNull DataSource dataSource)	Constructor.

Method Summary

Modifier and Type	Method	Description
MetaData	get(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment)

Methods inherited from class java.lang.Object

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

Constructor Details

SQLQueryDataFetcher

@Inject
public SQLQueryDataFetcher(@NotNull
 @NotNull DataSource dataSource)

Constructor.

Parameters:

dataSource - a client object against a SQL database to fetch meta data from

Throws:

NullPointerException - if dataSource is null

Method Details

get

public MetaData get(graphql.schema.DataFetchingEnvironment dataFetchingEnvironment)
             throws Exception

Specified by:

get in interface graphql.schema.DataFetcher<MetaData>

Throws:

Exception