com.fasterxml.jackson.databind

Class PropertyNamingStrategy

java.lang.Object

com.fasterxml.jackson.databind.PropertyNamingStrategy

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

PropertyNamingStrategies.NamingBase, PropertyNamingStrategy.PropertyNamingStrategyBase

public class PropertyNamingStrategy
extends Object
implements Serializable

Class that defines how names of JSON properties ("external names") are derived from names of POJO methods and fields ("internal names"), in cases where no explicit annotations exist for naming. Methods are passed information about POJO member for which name is needed, as well as default name that would be used if no custom strategy was used.

Default (empty) implementation returns suggested ("implicit" or "default") name unmodified

Note that the strategy is guaranteed to be called once per logical property (which may be represented by multiple members; such as pair of a getter and a setter), but may be called for each: implementations should not count on exact number of times, and should work for any member that represent a property. Also note that calls are made during construction of serializers and deserializers which are typically cached, and not for every time serializer or deserializer is called.

In absence of a registered custom strategy, the default Java property naming strategy is used, which leaves field names as is, and removes set/get/is prefix from methods (as well as lower-cases initial sequence of capitalized characters).

NOTE! Since 2.12 sub-classes defined here (as well as static singleton instances thereof) are deprecated due to databind#2715. Please use constants and classes in PropertyNamingStrategies instead.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PropertyNamingStrategy.KebabCaseStrategy Deprecated. Since 2.12 use PropertyNamingStrategies.KebabCaseStrategy instead (see databind#2715 for reason for deprecation)
static class	PropertyNamingStrategy.LowerCaseStrategy Deprecated. Since 2.12 use PropertyNamingStrategies.LowerCaseStrategy instead (see databind#2715 for reason for deprecation)
static class	PropertyNamingStrategy.LowerDotCaseStrategy Deprecated. Since 2.12 use PropertyNamingStrategies.LowerDotCaseStrategy instead (see databind#2715 for reason for deprecation)
static class	PropertyNamingStrategy.PropertyNamingStrategyBase Deprecated. Since 2.12 deprecated. See databind#2715 for reasons for deprecation.
static class	PropertyNamingStrategy.SnakeCaseStrategy Deprecated. Since 2.12 use PropertyNamingStrategies.SnakeCaseStrategy instead (see databind#2715 for reason for deprecation)
static class	PropertyNamingStrategy.UpperCamelCaseStrategy Deprecated. Since 2.12 use PropertyNamingStrategies.UpperCamelCaseStrategy instead (see databind#2715 for reason for deprecation)

Field Summary

Fields

Modifier and Type	Field and Description
static PropertyNamingStrategy	KEBAB_CASE Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.KEBAB_CASE instead. See databind#2715 for reasons for deprecation.
static PropertyNamingStrategy	LOWER_CAMEL_CASE Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.LOWER_CAMEL_CASE instead. See databind#2715 for reasons for deprecation.
static PropertyNamingStrategy	LOWER_CASE Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.LOWER_CASE instead. See databind#2715 for reasons for deprecation.
static PropertyNamingStrategy	LOWER_DOT_CASE Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.LOWER_DOT_CASE instead. See databind#2715 for reasons for deprecation.
static PropertyNamingStrategy	SNAKE_CASE Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.SNAKE_CASE instead. See databind#2715 for reasons for deprecation.
static PropertyNamingStrategy	UPPER_CAMEL_CASE Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.UPPER_CAMEL_CASE instead. See databind#2715 for reasons for deprecation.

Constructor Summary

Constructors

Constructor and Description
PropertyNamingStrategy()

Method Summary

Modifier and Type	Method and Description
String	nameForConstructorParameter(MapperConfig<?> config, AnnotatedParameter ctorParam, String defaultName) Method called to find external name (name used in JSON) for given logical POJO property, as defined by given constructor parameter; typically called when building a deserializer (but not necessarily only then).
String	nameForField(MapperConfig<?> config, AnnotatedField field, String defaultName) Method called to find external name (name used in JSON) for given logical POJO property, as defined by given field.
String	nameForGetterMethod(MapperConfig<?> config, AnnotatedMethod method, String defaultName) Method called to find external name (name used in JSON) for given logical POJO property, as defined by given getter method; typically called when building a serializer.
String	nameForSetterMethod(MapperConfig<?> config, AnnotatedMethod method, String defaultName) Method called to find external name (name used in JSON) for given logical POJO property, as defined by given setter method; typically called when building a deserializer (but not necessarily only then).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOWER_CAMEL_CASE

@Deprecated
public static final PropertyNamingStrategy LOWER_CAMEL_CASE

Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.LOWER_CAMEL_CASE instead. See databind#2715 for reasons for deprecation.

UPPER_CAMEL_CASE

@Deprecated
public static final PropertyNamingStrategy UPPER_CAMEL_CASE

Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.UPPER_CAMEL_CASE instead. See databind#2715 for reasons for deprecation.

SNAKE_CASE

@Deprecated
public static final PropertyNamingStrategy SNAKE_CASE

Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.SNAKE_CASE instead. See databind#2715 for reasons for deprecation.

LOWER_CASE

@Deprecated
public static final PropertyNamingStrategy LOWER_CASE

Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.LOWER_CASE instead. See databind#2715 for reasons for deprecation.

KEBAB_CASE

@Deprecated
public static final PropertyNamingStrategy KEBAB_CASE

Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.KEBAB_CASE instead. See databind#2715 for reasons for deprecation.

LOWER_DOT_CASE

@Deprecated
public static final PropertyNamingStrategy LOWER_DOT_CASE

Deprecated. Since 2.12 deprecated. Use PropertyNamingStrategies.LOWER_DOT_CASE instead. See databind#2715 for reasons for deprecation.

Constructor Detail

PropertyNamingStrategy

public PropertyNamingStrategy()

Method Detail

nameForField

public String nameForField(MapperConfig<?> config,
                           AnnotatedField field,
                           String defaultName)

Method called to find external name (name used in JSON) for given logical POJO property, as defined by given field.

Parameters:

config - Configuration in used: either SerializationConfig or DeserializationConfig, depending on whether method is called during serialization or deserialization

field - Field used to access property

defaultName - Default name that would be used for property in absence of custom strategy

Returns:

Logical name to use for property that the field represents

nameForGetterMethod

public String nameForGetterMethod(MapperConfig<?> config,
                                  AnnotatedMethod method,
                                  String defaultName)

Method called to find external name (name used in JSON) for given logical POJO property, as defined by given getter method; typically called when building a serializer. (but not always -- when using "getter-as-setter", may be called during deserialization)

Parameters:

config - Configuration in used: either SerializationConfig or DeserializationConfig, depending on whether method is called during serialization or deserialization

method - Method used to access property.

defaultName - Default name that would be used for property in absence of custom strategy

Returns:

Logical name to use for property that the method represents

nameForSetterMethod

public String nameForSetterMethod(MapperConfig<?> config,
                                  AnnotatedMethod method,
                                  String defaultName)

Method called to find external name (name used in JSON) for given logical POJO property, as defined by given setter method; typically called when building a deserializer (but not necessarily only then).

Parameters:

config - Configuration in used: either SerializationConfig or DeserializationConfig, depending on whether method is called during serialization or deserialization

method - Method used to access property.

defaultName - Default name that would be used for property in absence of custom strategy

Returns:

Logical name to use for property that the method represents

nameForConstructorParameter

public String nameForConstructorParameter(MapperConfig<?> config,
                                          AnnotatedParameter ctorParam,
                                          String defaultName)

Method called to find external name (name used in JSON) for given logical POJO property, as defined by given constructor parameter; typically called when building a deserializer (but not necessarily only then).

Parameters:

config - Configuration in used: either SerializationConfig or DeserializationConfig, depending on whether method is called during serialization or deserialization

ctorParam - Constructor parameter used to pass property.

defaultName - Default name that would be used for property in absence of custom strategy