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.carbondata.core.metadata.converter;
  
  import org.apache.carbondata.core.metadata.schema.SchemaEvolution;
  import org.apache.carbondata.core.metadata.schema.SchemaEvolutionEntry;
  import org.apache.carbondata.core.metadata.schema.table.TableInfo;
  import org.apache.carbondata.core.metadata.schema.table.TableSchema;
  import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema;
  
  /**
   * Converter interface which will be implemented for external to carbon schema
   */
  public interface SchemaConverter {
    /**
     * @param wrapperSchemaEvolutionEntry
     * @return
     */
    org.apache.carbondata.format.SchemaEvolutionEntry fromWrapperToExternalSchemaEvolutionEntry(
        SchemaEvolutionEntry wrapperSchemaEvolutionEntry);
  
    /**
     * @param wrapperSchemaEvolution
     * @return
     */
    org.apache.carbondata.format.SchemaEvolution fromWrapperToExternalSchemaEvolution(
        SchemaEvolution wrapperSchemaEvolution);
  
    /**
     * @param wrapperColumnSchema
     * @return
     */
    org.apache.carbondata.format.ColumnSchema fromWrapperToExternalColumnSchema(
        ColumnSchema wrapperColumnSchema);
  
    /**
     * @param wrapperTableSchema
     * @return
     */
    org.apache.carbondata.format.TableSchema fromWrapperToExternalTableSchema(
        TableSchema wrapperTableSchema);
  
    /**
     * @param wrapperTableInfo
     * @param dbName
     * @param tableName
     * @return
     */
    org.apache.carbondata.format.TableInfo fromWrapperToExternalTableInfo(TableInfo wrapperTableInfo,
        String dbName, String tableName);
  
    /**
     * @param externalSchemaEvolutionEntry
     * @return
     */
    SchemaEvolutionEntry fromExternalToWrapperSchemaEvolutionEntry(
        org.apache.carbondata.format.SchemaEvolutionEntry externalSchemaEvolutionEntry);
  
    /**
     * @param externalSchemaEvolution
     * @return
     */
    SchemaEvolution fromExternalToWrapperSchemaEvolution(
        org.apache.carbondata.format.SchemaEvolution externalSchemaEvolution);
  
    /**
     * @param externalColumnSchema
     * @return
     */
    ColumnSchema fromExternalToWrapperColumnSchema(
        org.apache.carbondata.format.ColumnSchema externalColumnSchema);
  
    /**
     * @param externalTableSchema
     * @param tableNam
     * @return
     */
    TableSchema fromExternalToWrapperTableSchema(
        org.apache.carbondata.format.TableSchema externalTableSchema, String tableNam);
  
    /**
     * method to convert thrift table info object to wrapper table info
     *
     * @param externalTableInfo thrift table info object
     * @param dbName database name
     * @param tableName table name
     * @param tablePath table path
     * @return TableInfo
     */
    TableInfo fromExternalToWrapperTableInfo(
        org.apache.carbondata.format.TableInfo externalTableInfo,
        String dbName,
        String tableName,
        String tablePath);
  
  }
  