io.trino.spi.connector.TableColumnsMetadata Maven / Gradle / Ivy
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/*
* 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.spi.connector;
import java.util.List;
import java.util.Optional;
import static java.util.Objects.requireNonNull;
public class TableColumnsMetadata
{
private final SchemaTableName table;
private final Optional> columns;
public TableColumnsMetadata(SchemaTableName table, Optional> columns)
{
this.table = requireNonNull(table, "table is null");
this.columns = requireNonNull(columns, "columns is null");
}
public static TableColumnsMetadata forTable(SchemaTableName table, List columns)
{
return new TableColumnsMetadata(table, Optional.of(requireNonNull(columns, "columns is null")));
}
public static TableColumnsMetadata forRedirectedTable(SchemaTableName table)
{
return new TableColumnsMetadata(table, Optional.empty());
}
public SchemaTableName getTable()
{
return table;
}
/**
* @return Optional.empty() value means the table is redirected
*/
public Optional> getColumns()
{
return columns;
}
}
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