com.arcadedb.database.async.DatabaseAsyncScanBucket Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of arcadedb-engine Show documentation

There is a newer version: 24.11.1

/*
 * Copyright © 2021-present Arcade Data Ltd ([email protected])
 *
 * 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.
 *
 * SPDX-FileCopyrightText: 2021-present Arcade Data Ltd ([email protected])
 * SPDX-License-Identifier: Apache-2.0
 */
package com.arcadedb.database.async;

import com.arcadedb.database.DatabaseInternal;
import com.arcadedb.database.Document;
import com.arcadedb.database.DocumentCallback;
import com.arcadedb.database.Record;
import com.arcadedb.engine.Bucket;
import com.arcadedb.engine.ErrorRecordCallback;

import java.util.concurrent.*;

public class DatabaseAsyncScanBucket implements DatabaseAsyncTask {
  public final CountDownLatch      semaphore;
  public final DocumentCallback    userCallback;
  public final ErrorRecordCallback errorRecordCallback;
  public final Bucket              bucket;

  public DatabaseAsyncScanBucket(final CountDownLatch semaphore, final DocumentCallback userCallback, final ErrorRecordCallback errorRecordCallback,
      final Bucket bucket) {
    this.semaphore = semaphore;
    this.userCallback = userCallback;
    this.errorRecordCallback = errorRecordCallback;
    this.bucket = bucket;
  }

  @Override
  public void execute(final DatabaseAsyncExecutorImpl.AsyncThread async, final DatabaseInternal database) {
    try {
      bucket.scan((rid, view) -> {
        if (async.isShutdown())
          return false;

        final Record record = database.getRecordFactory()
            .newImmutableRecord(database, database.getSchema().getType(database.getSchema().getTypeNameByBucketId(rid.getBucketId())), rid, view, null);

        return userCallback.onRecord((Document) record);
      }, errorRecordCallback);

    } finally {
      // UNLOCK THE CALLER THREAD
      semaphore.countDown();
    }
  }

  @Override
  public String toString() {
    return "ScanBucket(" + bucket + ")";
  }
}