solr/core/src/java/org/apache/solr/handler/designer/SchemaSuggester.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache 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://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.solr.handler.designer;

import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Optional;

import org.apache.solr.common.SolrInputDocument;
import org.apache.solr.schema.FieldType;
import org.apache.solr.schema.IndexSchema;
import org.apache.solr.schema.ManagedIndexSchema;
import org.apache.solr.schema.SchemaField;
import org.apache.solr.util.plugin.NamedListInitializedPlugin;

public interface SchemaSuggester extends NamedListInitializedPlugin {
  Optional<SchemaField> suggestField(String fieldName, List<Object> sampleValues, IndexSchema schema, List<String> langs);

  ManagedIndexSchema adaptExistingFieldToData(SchemaField schemaField, List<Object> sampleValues, ManagedIndexSchema schema);

  Map<String, List<Object>> transposeDocs(List<SolrInputDocument> docs);

  void validateTypeChange(SchemaField field, FieldType toType, List<SolrInputDocument> docs) throws IOException;

  boolean isMultiValued(String name, List<SolrInputDocument> docs);
}