content: // Copyright 2020 Andy Grove
  //
  // Licensed 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 io.andygrove.kquery.spark.datasource;
  
  import org.apache.spark.sql.connector.read.Batch;
  import org.apache.spark.sql.connector.read.Scan;
  import org.apache.spark.sql.connector.read.streaming.ContinuousStream;
  import org.apache.spark.sql.connector.read.streaming.MicroBatchStream;
  import org.apache.spark.sql.types.StructType;
  
  public class BallistaScan implements Scan {
  
    TableMeta tableMeta;
  
    public BallistaScan(TableMeta tableMeta) {
      this.tableMeta = tableMeta;
    }
  
    @Override
    public StructType readSchema() {
      return tableMeta.schema;
    }
  
    @Override
    public String description() {
      return tableMeta.tableName;
    }
  
    @Override
    public Batch toBatch() {
      return new BallistaBatch(tableMeta);
    }
  
    @Override
    public MicroBatchStream toMicroBatchStream(String checkpointLocation) {
      throw new UnsupportedOperationException();
    }
  
    @Override
    public ContinuousStream toContinuousStream(String checkpointLocation) {
      throw new UnsupportedOperationException();
    }
  }
  