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A table format for huge analytic datasets

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/*
 * 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 org.apache.iceberg.expressions.Expression;

/** {@link DeleteFiles Delete} implementation that avoids loading full manifests in memory. */
public class StreamingDelete extends MergingSnapshotProducer implements DeleteFiles {
  private boolean validateFilesToDeleteExist = false;

  protected StreamingDelete(String tableName, TableOperations ops) {
    super(tableName, ops);
  }

  @Override
  protected DeleteFiles self() {
    return this;
  }

  @Override
  protected String operation() {
    return DataOperations.DELETE;
  }

  @Override
  public StreamingDelete deleteFile(CharSequence path) {
    delete(path);
    return this;
  }

  @Override
  public StreamingDelete deleteFile(DataFile file) {
    delete(file);
    return this;
  }

  @Override
  public StreamingDelete deleteFromRowFilter(Expression expr) {
    deleteByRowFilter(expr);
    return this;
  }

  @Override
  public DeleteFiles validateFilesExist() {
    this.validateFilesToDeleteExist = true;
    return this;
  }

  @Override
  public StreamingDelete toBranch(String branch) {
    targetBranch(branch);
    return this;
  }

  @Override
  protected void validate(TableMetadata base, Snapshot parent) {
    if (validateFilesToDeleteExist) {
      failMissingDeletePaths();
    }
  }
}