/*
 * 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.hudi.utilities.schema.postprocessor;

import org.apache.hudi.common.config.TypedProperties;
import org.apache.hudi.common.schema.HoodieSchema;
import org.apache.hudi.utilities.schema.SchemaPostProcessor;

import org.apache.spark.api.java.JavaSparkContext;

import java.util.List;

/**
 * A {@link SchemaPostProcessor} to chain other {@link SchemaPostProcessor}s and process sequentially.
 */
public class ChainedSchemaPostProcessor extends SchemaPostProcessor {

  private List<SchemaPostProcessor> processors;

  protected ChainedSchemaPostProcessor(TypedProperties props, JavaSparkContext jssc) {
    super(props, jssc);
  }

  public ChainedSchemaPostProcessor(TypedProperties props, JavaSparkContext jssc, List<SchemaPostProcessor> processors) {
    super(props, jssc);
    this.processors = processors;
  }

  @Override
  public HoodieSchema processSchema(HoodieSchema schema) {
    HoodieSchema targetSchema = schema;
    for (SchemaPostProcessor processor : processors) {
      targetSchema = processor.processSchema(targetSchema);
    }
    return targetSchema;
  }
}
