io.delta.standalone.actions.SetTransaction Maven / Gradle / Ivy
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/*
* Copyright (2020-present) The Delta Lake Project Authors.
*
* 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.delta.standalone.actions;
import java.util.Optional;
import javax.annotation.Nonnull;
/**
* Sets the committed version for a given application. Used to make operations like
* {@link io.delta.standalone.Operation.Name#STREAMING_UPDATE} idempotent.
*
* @see Delta Transaction Log Protocol: Transaction Identifiers
*/
public final class SetTransaction implements Action {
@Nonnull
private final String appId;
private final long version;
@Nonnull
private final Optional lastUpdated;
public SetTransaction(
@Nonnull String appId,
long version,
@Nonnull Optional lastUpdated) {
this.appId = appId;
this.version = version;
this.lastUpdated = lastUpdated;
}
/**
* @return the unique identifier for the application performing the transaction
*/
@Nonnull
public String getAppId() {
return appId;
}
/**
* @return the application-specific numeric identifier for this transaction
*/
public long getVersion() {
return version;
}
/**
* @return the time when this transaction action was created, in milliseconds since the Unix
* epoch
*/
@Nonnull
public Optional getLastUpdated() {
return lastUpdated;
}
}