001/* 002 * Licensed under the Apache License, Version 2.0 (the "License"); 003 * you may not use this file except in compliance with the License. 004 * You may obtain a copy of the License at 005 * 006 * http://www.apache.org/licenses/LICENSE-2.0 007 * 008 * Unless required by applicable law or agreed to in writing, software 009 * distributed under the License is distributed on an "AS IS" BASIS, 010 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 011 * See the License for the specific language governing permissions and 012 * limitations under the License. 013 */ 014package org.gbif.ws.util; 015 016import java.util.Map; 017 018import javax.annotation.Nullable; 019import javax.validation.constraints.NotNull; 020 021import org.apache.commons.lang3.StringUtils; 022import org.springframework.http.MediaType; 023 024/** 025 * Class with util methods for WS. 026 */ 027public final class CommonWsUtils { 028 029 private CommonWsUtils() {} 030 031 /** 032 * Retrieve the first occurrence of the param in params. 033 * Can be applied for HttpHeaders. 034 */ 035 public static String getFirst(Map<String, String[]> params, String param) { 036 final String[] values = params.get(param); 037 String resultValue = null; 038 039 if (values != null && values[0] != null) { 040 resultValue = values[0]; 041 } 042 043 return resultValue; 044 } 045 046 /** 047 * MediaType by string extension. 048 */ 049 @Nullable 050 public static String getResponseTypeByExtension( 051 @Nullable String extension, @NotNull String defaultMediaType) { 052 if (StringUtils.isEmpty(extension)) { 053 return defaultMediaType; 054 } else if (".xml".equals(extension)) { 055 return MediaType.APPLICATION_XML_VALUE; 056 } else if (".json".equals(extension)) { 057 return MediaType.APPLICATION_JSON_VALUE; 058 } else { 059 return null; 060 } 061 } 062}