com.google.gson
Enum FieldNamingPolicy

java.lang.Object
  java.lang.Enum<FieldNamingPolicy>
      com.google.gson.FieldNamingPolicy

All Implemented Interfaces:

Serializable, Comparable<FieldNamingPolicy>

public enum FieldNamingPolicy
extends Enum<FieldNamingPolicy>

An enumeration that defines a few standard naming conventions for JSON field names. This enumeration should be used in conjunction with GsonBuilder to configure a Gson instance to properly translate Java field names into the desired JSON field names.

Author:

Inderjeet Singh, Joel Leitch

Enum Constant Summary

LOWER_CASE_WITH_DASHES
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 (-).

LOWER_CASE_WITH_UNDERSCORES
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 (_).

UPPER_CAMEL_CASE
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.

Method Summary

static FieldNamingPolicy	valueOf(String name) Returns the enum constant of this type with the specified name.
static FieldNamingPolicy[]	values() Returns an array containing the constants of this enum type, in the order they're declared.

Methods inherited from class java.lang.Enum

compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

UPPER_CAMEL_CASE

public static final FieldNamingPolicy UPPER_CAMEL_CASE

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.

Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":

• someFieldName ---> SomeFieldName
• _someFieldName ---> _SomeFieldName

LOWER_CASE_WITH_UNDERSCORES

public static final FieldNamingPolicy LOWER_CASE_WITH_UNDERSCORES

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 (_).

Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":

• someFieldName ---> some_field_name
• _someFieldName ---> _some_field_name
• aStringField ---> a_string_field
• aURL ---> a_u_r_l

LOWER_CASE_WITH_DASHES

public static final FieldNamingPolicy LOWER_CASE_WITH_DASHES

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 (-).

Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":

• someFieldName ---> some-field-name
• _someFieldName ---> _some-field-name
• aStringField ---> a-string-field
• aURL ---> a-u-r-l

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 myobject['my-field']. Accessing it as an object field myobject.my-field will result in an unintended javascript expression.

Since:

1.4

Method Detail

values

public static final FieldNamingPolicy[] values()

Returns an array containing the constants of this enum type, in the order they're declared. This method may be used to iterate over the constants as follows:

for(FieldNamingPolicy c : FieldNamingPolicy.values())
        System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they're declared

valueOf

public static FieldNamingPolicy valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name