io.trino.metadata.TableFunctionRegistry Maven / Gradle / Ivy
/*
* 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.metadata;
import com.google.errorprone.annotations.ThreadSafe;
import com.google.inject.Inject;
import io.trino.connector.CatalogServiceProvider;
import io.trino.spi.connector.CatalogHandle;
import io.trino.spi.function.SchemaFunctionName;
import io.trino.spi.function.table.ConnectorTableFunction;
import java.util.Optional;
import static java.util.Objects.requireNonNull;
@ThreadSafe
public class TableFunctionRegistry
{
private final CatalogServiceProvider tableFunctionsProvider;
@Inject
public TableFunctionRegistry(CatalogServiceProvider tableFunctionsProvider)
{
this.tableFunctionsProvider = requireNonNull(tableFunctionsProvider, "tableFunctionsProvider is null");
}
/**
* Resolve table function with given qualified name.
* Table functions are resolved case-insensitive for consistency with existing scalar function resolution.
*/
public Optional resolve(CatalogHandle catalogHandle, SchemaFunctionName schemaFunctionName)
{
return tableFunctionsProvider.getService(catalogHandle)
.getTableFunction(schemaFunctionName);
}
}