PathVariablesResolver.java

/*
 * Copyright 2022 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.bremersee.apiclient.webflux.contract.spring;

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.function.Function;
import org.bremersee.apiclient.webflux.Invocation;
import org.springframework.web.bind.annotation.PathVariable;

/**
 * The path variables resolver.
 *
 * @author Christian Bremer
 */
public class PathVariablesResolver implements Function<Invocation, Map<String, Object>> {

  @Override
  public Map<String, Object> apply(Invocation invocation) {
    return invocation.toMethodParameterStream()
        .map(invocationParameter -> invocationParameter.toMultiValueMap(
            PathVariable.class,
            PathVariable::value,
            String::valueOf))
        .collect(
            LinkedHashMap::new,
            (a, b) -> a.putAll(b.toSingleValueMap()),
            LinkedHashMap::putAll);
  }
}