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Pulsar SQL - Pulsar Presto Connector
/*
* 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.pulsar.sql.presto;
import static java.util.Objects.requireNonNull;
import com.google.common.collect.ImmutableList;
import io.trino.spi.connector.ColumnHandle;
import io.trino.spi.connector.ConnectorRecordSetProvider;
import io.trino.spi.connector.ConnectorSession;
import io.trino.spi.connector.ConnectorSplit;
import io.trino.spi.connector.ConnectorTransactionHandle;
import io.trino.spi.connector.RecordSet;
import java.util.List;
import javax.inject.Inject;
/**
* Implementation of the provider for record sets.
*/
public class PulsarRecordSetProvider implements ConnectorRecordSetProvider {
private final PulsarConnectorConfig pulsarConnectorConfig;
private final PulsarDispatchingRowDecoderFactory decoderFactory;
@Inject
public PulsarRecordSetProvider(PulsarConnectorConfig pulsarConnectorConfig,
PulsarDispatchingRowDecoderFactory decoderFactory) {
this.decoderFactory = requireNonNull(decoderFactory, "decoderFactory is null");
this.pulsarConnectorConfig = requireNonNull(pulsarConnectorConfig, "pulsarConnectorConfig is null");
}
@Override
public RecordSet getRecordSet(ConnectorTransactionHandle transactionHandle, ConnectorSession session,
ConnectorSplit split, List columns) {
requireNonNull(split, "Connector split is null");
PulsarSplit pulsarSplit = (PulsarSplit) split;
ImmutableList.Builder handles = ImmutableList.builder();
for (ColumnHandle handle : columns) {
handles.add((PulsarColumnHandle) handle);
}
return new PulsarRecordSet(pulsarSplit, handles.build(), this.pulsarConnectorConfig, decoderFactory);
}
}