com.datastax.driver.core.ChainedResultSetFuture Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of cassandra-driver Show documentation
Show all versions of cassandra-driver Show documentation
Shaded version of DataStax Java Driver for Apache Cassandra
/*
* Copyright (C) 2012-2015 DataStax 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.datastax.driver.core;
import com.datastax.driver.$internal.com.google.common.util.concurrent.AbstractFuture;
import com.datastax.driver.$internal.com.google.common.util.concurrent.FutureCallback;
import com.datastax.driver.$internal.com.google.common.util.concurrent.Futures;
import com.datastax.driver.$internal.com.google.common.util.concurrent.Uninterruptibles;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* A {@code ResultSetFuture} that will complete when its source future completes.
*/
class ChainedResultSetFuture extends AbstractFuture implements ResultSetFuture {
private volatile ResultSetFuture source;
void setSource(ResultSetFuture source) {
if (this.isCancelled())
source.cancel(false);
this.source = source;
Futures.addCallback(source, new FutureCallback() {
@Override
public void onSuccess(ResultSet result) {
ChainedResultSetFuture.this.set(result);
}
@Override
public void onFailure(Throwable t) {
ChainedResultSetFuture.this.setException(t);
}
});
}
@Override
public boolean cancel(boolean mayInterruptIfRunning) {
return (source == null || source.cancel(mayInterruptIfRunning))
&& super.cancel(mayInterruptIfRunning);
}
@Override
public ResultSet getUninterruptibly() {
try {
return Uninterruptibles.getUninterruptibly(this);
} catch (ExecutionException e) {
throw DriverThrowables.propagateCause(e);
}
}
@Override
public ResultSet getUninterruptibly(long timeout, TimeUnit unit) throws TimeoutException {
try {
return Uninterruptibles.getUninterruptibly(this, timeout, unit);
} catch (ExecutionException e) {
throw DriverThrowables.propagateCause(e);
}
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy