io.trino.plugin.blackhole.BlackHoleTableHandle Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of trino-blackhole Show documentation

Trino - Black Hole Connector

There is a newer version: 468

/*
 * 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.trino.plugin.blackhole;

import com.google.common.collect.ImmutableList;
import io.airlift.units.Duration;
import io.trino.spi.connector.ConnectorTableHandle;
import io.trino.spi.connector.ConnectorTableMetadata;
import io.trino.spi.connector.SchemaTableName;

import java.util.List;

import static java.util.Objects.requireNonNull;
import static java.util.stream.Collectors.toList;

public record BlackHoleTableHandle(
        String schemaName,
        String tableName,
        List columnHandles,
        int splitCount,
        int pagesPerSplit,
        int rowsPerPage,
        int fieldsLength,
        Duration pageProcessingDelay)
        implements ConnectorTableHandle
{
    public BlackHoleTableHandle
    {
        requireNonNull(schemaName, "schemaName is null");
        requireNonNull(tableName, "tableName is null");
        columnHandles = ImmutableList.copyOf(requireNonNull(columnHandles, "columnHandles is null"));
        requireNonNull(pageProcessingDelay, "pageProcessingDelay is null");
    }

    public BlackHoleTableHandle withColumnHandles(List columnHandles)
    {
        return new BlackHoleTableHandle(
                schemaName,
                tableName,
                ImmutableList.copyOf(columnHandles),
                splitCount,
                pagesPerSplit,
                rowsPerPage,
                fieldsLength,
                pageProcessingDelay);
    }

    public ConnectorTableMetadata toTableMetadata()
    {
        return new ConnectorTableMetadata(
                toSchemaTableName(),
                columnHandles.stream().map(BlackHoleColumnHandle::toColumnMetadata).collect(toList()));
    }

    public SchemaTableName toSchemaTableName()
    {
        return new SchemaTableName(schemaName, tableName);
    }

    @Override
    public String toString()
    {
        return schemaName + ":" + tableName;
    }
}