/*
* Copyright 2014-2017 the original author or authors.
*
* 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 org.springframework.data.keyvalue.core;
import org.springframework.data.keyvalue.core.query.KeyValueQuery;
/**
* Resolves the criteria object from given {@link KeyValueQuery}.
*
* @author Christoph Strobl
* @param <T>
*/
public interface CriteriaAccessor<T> {
/**
* Checks and reads {@link KeyValueQuery#getCriteria()} of given {@link KeyValueQuery}. Might also apply additional
* transformation to match the desired type.
*
* @param query can be {@literal null}.
* @return the criteria extracted from the query.
* @throws IllegalArgumentException in case the criteria is not valid for usage with specific {@link CriteriaAccessor}
* .
*/
T resolve(KeyValueQuery<?> query);
}