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A framework for building RESTful web APIs.
/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* 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 com.google.api.server.spi.response;
import com.google.api.server.spi.Constant;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
/**
* Utility methods for writing responses.
*/
public final class ResponseUtil {
private ResponseUtil() {}
/**
* Wraps a collection in an "items" property.
*/
static Object wrapCollection(Object value) {
if (isCollection(value)) {
Map wrapped = new HashMap();
wrapped.put(Constant.ITEMS, value);
return wrapped;
} else {
return value;
}
}
/**
* Returns {@code true} if {@code value} is either a collection or an array; {@code false}
* otherwise.
*/
private static boolean isCollection(Object value) {
return value == null ? false : value instanceof Collection> || value.getClass().isArray();
}
}