+++ /dev/null
-/*
- * Copyright (C) 2008 Google Inc.
- *
- * 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.gson;
-
-import java.lang.reflect.Field;
-import java.util.Locale;
-
-/**
- * An enumeration that defines a few standard naming conventions for JSON field names.
- * This enumeration should be used in conjunction with {@link com.google.gson.GsonBuilder}
- * to configure a {@link com.google.gson.Gson} instance to properly translate Java field
- * names into the desired JSON field names.
- *
- * @author Inderjeet Singh
- * @author Joel Leitch
- */
-public enum FieldNamingPolicy implements FieldNamingStrategy {
-
- /**
- * Using this naming policy with Gson will ensure that the field name is
- * unchanged.
- */
- IDENTITY() {
- public String translateName(Field f) {
- return f.getName();
- }
- },
-
- /**
- * Using this naming policy with Gson will ensure that the first "letter" of the Java
- * field name is capitalized when serialized to its JSON form.
- *
- * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
- * <ul>
- * <li>someFieldName ---> SomeFieldName</li>
- * <li>_someFieldName ---> _SomeFieldName</li>
- * </ul>
- */
- UPPER_CAMEL_CASE() {
- public String translateName(Field f) {
- return upperCaseFirstLetter(f.getName());
- }
- },
-
- /**
- * Using this naming policy with Gson will ensure that the first "letter" of the Java
- * field name is capitalized when serialized to its JSON form and the words will be
- * separated by a space.
- *
- * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
- * <ul>
- * <li>someFieldName ---> Some Field Name</li>
- * <li>_someFieldName ---> _Some Field Name</li>
- * </ul>
- *
- * @since 1.4
- */
- UPPER_CAMEL_CASE_WITH_SPACES() {
- public String translateName(Field f) {
- return upperCaseFirstLetter(separateCamelCase(f.getName(), " "));
- }
- },
-
- /**
- * Using this naming policy with Gson will modify the Java Field name from its camel cased
- * form to a lower case field name where each word is separated by an underscore (_).
- *
- * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
- * <ul>
- * <li>someFieldName ---> some_field_name</li>
- * <li>_someFieldName ---> _some_field_name</li>
- * <li>aStringField ---> a_string_field</li>
- * <li>aURL ---> a_u_r_l</li>
- * </ul>
- */
- LOWER_CASE_WITH_UNDERSCORES() {
- public String translateName(Field f) {
- return separateCamelCase(f.getName(), "_").toLowerCase(Locale.ENGLISH);
- }
- },
-
- /**
- * Using this naming policy with Gson will modify the Java Field name from its camel cased
- * form to a lower case field name where each word is separated by a dash (-).
- *
- * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
- * <ul>
- * <li>someFieldName ---> some-field-name</li>
- * <li>_someFieldName ---> _some-field-name</li>
- * <li>aStringField ---> a-string-field</li>
- * <li>aURL ---> a-u-r-l</li>
- * </ul>
- * Using dashes in JavaScript is not recommended since dash is also used for a minus sign in
- * expressions. This requires that a field named with dashes is always accessed as a quoted
- * property like {@code myobject['my-field']}. Accessing it as an object field
- * {@code myobject.my-field} will result in an unintended javascript expression.
- * @since 1.4
- */
- LOWER_CASE_WITH_DASHES() {
- public String translateName(Field f) {
- return separateCamelCase(f.getName(), "-").toLowerCase(Locale.ENGLISH);
- }
- };
-
- /**
- * Converts the field name that uses camel-case define word separation into
- * separate words that are separated by the provided {@code separatorString}.
- */
- private static String separateCamelCase(String name, String separator) {
- StringBuilder translation = new StringBuilder();
- for (int i = 0; i < name.length(); i++) {
- char character = name.charAt(i);
- if (Character.isUpperCase(character) && translation.length() != 0) {
- translation.append(separator);
- }
- translation.append(character);
- }
- return translation.toString();
- }
-
- /**
- * Ensures the JSON field names begins with an upper case letter.
- */
- private static String upperCaseFirstLetter(String name) {
- StringBuilder fieldNameBuilder = new StringBuilder();
- int index = 0;
- char firstCharacter = name.charAt(index);
-
- while (index < name.length() - 1) {
- if (Character.isLetter(firstCharacter)) {
- break;
- }
-
- fieldNameBuilder.append(firstCharacter);
- firstCharacter = name.charAt(++index);
- }
-
- if (index == name.length()) {
- return fieldNameBuilder.toString();
- }
-
- if (!Character.isUpperCase(firstCharacter)) {
- String modifiedTarget = modifyString(Character.toUpperCase(firstCharacter), name, ++index);
- return fieldNameBuilder.append(modifiedTarget).toString();
- } else {
- return name;
- }
- }
-
- private static String modifyString(char firstCharacter, String srcString, int indexOfSubstring) {
- return (indexOfSubstring < srcString.length())
- ? firstCharacter + srcString.substring(indexOfSubstring)
- : String.valueOf(firstCharacter);
- }
-}
\ No newline at end of file
projects / unical.git / blobdiff