io.trino.connector.CatalogServiceProvider 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.connector;
import io.trino.spi.connector.CatalogHandle;
import jakarta.validation.constraints.NotNull;
import static com.google.common.base.Preconditions.checkArgument;
public interface CatalogServiceProvider
{
static CatalogServiceProvider fail()
{
return fail("Not supported");
}
static CatalogServiceProvider fail(String message)
{
return catalogName -> {
throw new IllegalStateException(message);
};
}
static CatalogServiceProvider singleton(CatalogHandle catalogHandle, T value)
{
return handle -> {
checkArgument(handle.equals(catalogHandle));
return value;
};
}
@NotNull
T getService(CatalogHandle catalogHandle);
}