io.trino.metadata.LanguageFunctionProvider 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 io.trino.execution.TaskId;
import io.trino.spi.function.FunctionDependencies;
import io.trino.spi.function.InvocationConvention;
import io.trino.spi.function.ScalarFunctionImplementation;
import java.util.List;
public interface LanguageFunctionProvider
{
LanguageFunctionProvider DISABLED = new LanguageFunctionProvider()
{
@Override
public ScalarFunctionImplementation specialize(FunctionManager functionManager, ResolvedFunction resolvedFunction, FunctionDependencies functionDependencies, InvocationConvention invocationConvention)
{
throw new UnsupportedOperationException("SQL language functions are disabled");
}
@Override
public void registerTask(TaskId taskId, List languageFunctions)
{
if (!languageFunctions.isEmpty()) {
throw new UnsupportedOperationException("SQL language functions are disabled");
}
}
@Override
public void unregisterTask(TaskId taskId) {}
};
ScalarFunctionImplementation specialize(
FunctionManager functionManager,
ResolvedFunction resolvedFunction,
FunctionDependencies functionDependencies,
InvocationConvention invocationConvention);
void registerTask(TaskId taskId, List languageFunctions);
void unregisterTask(TaskId taskId);
}