CommonSeriesMetadataV2DataFetcher.java

/*
 * Licensed to The Apereo Foundation under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 *
 * The Apereo Foundation licenses this file to you under the Educational
 * Community License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License
 * at:
 *
 *   http://opensource.org/licenses/ecl2.txt
 *
 * Unless required by applicable law or agreed to in writing, software
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 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
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package org.opencastproject.graphql.datafetcher.series;

import org.opencastproject.graphql.datafetcher.ContextDataFetcher;
import org.opencastproject.graphql.exception.GraphQLNotFoundException;
import org.opencastproject.graphql.execution.context.OpencastContext;
import org.opencastproject.graphql.series.GqlSeries;
import org.opencastproject.graphql.type.output.GqlMetadataFieldInterface;
import org.opencastproject.graphql.util.MetadataFieldToGraphQLFieldMapper;
import org.opencastproject.index.service.api.IndexService;
import org.opencastproject.metadata.dublincore.DublinCoreMetadataCollection;

import com.entwinemedia.fn.data.Opt;

import java.util.HashMap;
import java.util.Map;

import graphql.schema.DataFetchingEnvironment;

public class CommonSeriesMetadataV2DataFetcher implements ContextDataFetcher<Map<String, GqlMetadataFieldInterface>> {

  @Override
  public Map<String, GqlMetadataFieldInterface> get(
      OpencastContext opencastContext,
      DataFetchingEnvironment dataFetchingEnvironment) {
    String seriesId = ((GqlSeries)dataFetchingEnvironment.getSource()).id();
    IndexService indexService = opencastContext.getService(IndexService.class);

    Map<String, GqlMetadataFieldInterface> result = new HashMap<>();
    Opt<DublinCoreMetadataCollection> optSeries = indexService.getCommonSeriesCatalogUIAdapter().getFields(seriesId);
    if (optSeries.isNone()) {
      throw new GraphQLNotFoundException("Series with id `" + seriesId + "` not found.");
    }
    optSeries.get().getOutputFields().forEach(
        (key, value) -> result.put(key, MetadataFieldToGraphQLFieldMapper.mapType(value))
    );
    return result;
  }
}