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A table format for huge analytic datasets

There is a newer version: 1.7.1

/*
 * 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.iceberg;

import com.google.common.collect.ImmutableMap;
import java.util.Collection;
import java.util.function.Function;
import org.apache.iceberg.expressions.Expression;
import org.apache.iceberg.io.CloseableIterable;

class StaticTableScan extends BaseTableScan {
  private static final long TARGET_SPLIT_SIZE = 32 * 1024 * 1024; // 32 MB

  private final Function buildTask;

  StaticTableScan(TableOperations ops, Table table, Schema schema, Function buildTask) {
    super(ops, table, schema);
    this.buildTask = buildTask;
  }

  private StaticTableScan(
      TableOperations ops, Table table, Long snapshotId, Schema schema, Expression rowFilter,
      boolean caseSensitive, boolean colStats, Collection selectedColumns,
      Function buildTask, ImmutableMap options) {
    super(ops, table, snapshotId, schema, rowFilter, caseSensitive, colStats, selectedColumns, options);
    this.buildTask = buildTask;
  }

  @Override
  protected long targetSplitSize(TableOperations ops) {
    return TARGET_SPLIT_SIZE;
  }

  @Override
  protected TableScan newRefinedScan(
      TableOperations ops, Table table, Long snapshotId, Schema schema, Expression rowFilter,
      boolean caseSensitive, boolean colStats, Collection selectedColumns,
      ImmutableMap options) {
    return new StaticTableScan(
        ops, table, snapshotId, schema, rowFilter, caseSensitive, colStats, selectedColumns, buildTask, options);
  }

  @Override
  protected CloseableIterable planFiles(
      TableOperations ops, Snapshot snapshot, Expression rowFilter, boolean caseSensitive, boolean colStats) {
    return CloseableIterable.withNoopClose(buildTask.apply(this));
  }
}