/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate licenses
* this file to you 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.metadata;
import io.crate.data.Input;
import java.util.List;
public interface ReferenceImplementation<T> extends Input<T> {
/**
* Returns an implementation for a child.
*
* @param name The name of the child
* @return an implementation for the child or null if not applicable or if there is no child available
* with the given name
*/
default ReferenceImplementation getChildImplementation(String name) {
return null;
}
static ReferenceImplementation<?> findInChildImplementations(ReferenceImplementation<?> impl, List<String> path) {
for (int i = 0; i < path.size(); i++) {
impl = impl.getChildImplementation(path.get(i));
if (impl == null) {
return null;
}
}
return impl;
}
}