com.google.firebase.database.core.operation.AckUserWrite Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of firebase-admin Show documentation

This is the official Firebase Admin Java SDK. Build extraordinary native JVM apps in minutes with Firebase. The Firebase platform can power your app’s backend, user authentication, static hosting, and more.

There is a newer version: 9.2.0

Show newest version

/*
 * Copyright 2017 Google Inc.
 *
 * 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 com.google.firebase.database.core.operation;

import static com.google.firebase.database.utilities.Utilities.hardAssert;

import com.google.firebase.database.core.Path;
import com.google.firebase.database.core.utilities.ImmutableTree;
import com.google.firebase.database.snapshot.ChildKey;

public class AckUserWrite extends Operation {

  private final boolean revert;
  // A tree containing true for each affected path.  Affected paths can't overlap.
  private final ImmutableTree affectedTree;

  public AckUserWrite(Path path, ImmutableTree affectedTree, boolean revert) {
    super(OperationType.AckUserWrite, OperationSource.USER, path);
    this.affectedTree = affectedTree;
    this.revert = revert;
  }

  public ImmutableTree getAffectedTree() {
    return this.affectedTree;
  }

  public boolean isRevert() {
    return this.revert;
  }

  @Override
  public Operation operationForChild(ChildKey childKey) {
    if (!this.path.isEmpty()) {
      hardAssert(
          this.path.getFront().equals(childKey),
          "operationForChild called for unrelated " + "child.");
      return new AckUserWrite(this.path.popFront(), this.affectedTree, this.revert);
    } else if (this.affectedTree.getValue() != null) {
      hardAssert(
          this.affectedTree.getChildren().isEmpty(),
          "affectedTree should not have overlapping affected paths.");
      // All child locations are affected as well; just return same operation.
      return this;
    } else {
      ImmutableTree childTree = this.affectedTree.subtree(new Path(childKey));
      return new AckUserWrite(Path.getEmptyPath(), childTree, this.revert);
    }
  }

  @Override
  public String toString() {
    return String.format(
        "AckUserWrite { path=%s, revert=%s, affectedTree=%s }",
        getPath(), this.revert, this.affectedTree);
  }
}