content: /*
   * 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.camel.kafkaconnector.utils;
  
  import java.math.BigDecimal;
  import java.util.Date;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  
  import org.apache.kafka.connect.data.Decimal;
  import org.apache.kafka.connect.data.Schema;
  import org.apache.kafka.connect.data.SchemaBuilder;
  import org.apache.kafka.connect.data.Values;
  import org.apache.kafka.connect.transforms.util.SchemaUtil;
  
  public final class SchemaHelper {
  
      private SchemaHelper() {
      }
  
      /**
       * Try to build a {@link SchemaBuilder} for a value of type {@link Object}
       * However, this will only build the schema only for known types, in case it can not return the precise SchemaBuilder type
       * it will return an optional {@link SchemaBuilder.Type}
       * @param value to return the SchemaBuilder for
       *
       * @return {@link SchemaBuilder} instance
       */
      public static SchemaBuilder buildSchemaBuilderForType(final Object value) {
          Objects.requireNonNull(value);
  
          // gracefully try to infer the schema
          final Schema knownSchema = Values.inferSchema(value);
  
          if (knownSchema == null) {
              // let's now check for other types
              if (value instanceof Date) {
                  return org.apache.kafka.connect.data.Date.builder();
              }
              if (value instanceof BigDecimal) {
                  return Decimal.builder(((BigDecimal) value).scale());
              }
              // we re-check map and list since inferSchema function is not tolerant against map and list
              // for now we rely on inferSchema, however it makes some point to build a specific inferSchema method only for this connector
              if (value instanceof Map) {
                  return new SchemaBuilder(Schema.Type.MAP);
              }
              if (value instanceof List) {
                  return new SchemaBuilder(Schema.Type.ARRAY);
              }
              // if we do not fine any of schema out of the above, we just return an an optional byte schema
              return SchemaBuilder.bytes().optional();
          }
          return SchemaUtil.copySchemaBasics(knownSchema);
      }
  }
  