Package org.springframework.http.converter

Class AbstractKotlinSerializationHttpMessageConverter<T extends kotlinx.serialization.SerialFormat>

java.lang.Object

org.springframework.http.converter.AbstractHttpMessageConverter<T>

org.springframework.http.converter.AbstractSmartHttpMessageConverter<Object>

org.springframework.http.converter.AbstractKotlinSerializationHttpMessageConverter<T>

Type Parameters:

T - the type of SerialFormat

All Implemented Interfaces:

HttpMessageConverter<Object>, SmartHttpMessageConverter<Object>

Direct Known Subclasses:

KotlinSerializationBinaryHttpMessageConverter, KotlinSerializationStringHttpMessageConverter

public abstract class AbstractKotlinSerializationHttpMessageConverter<T extends kotlinx.serialization.SerialFormat>
extends AbstractSmartHttpMessageConverter<Object>

Abstract base class for HttpMessageConverter implementations that use Kotlin serialization.

As of Spring Framework 7.0, open polymorphism is supported.

Since:

6.0

Author:

Andreas Ahlenstorf, Sebastien Deleuze, Juergen Hoeller, Iain Henderson, Arjen Poutsma

Field Summary

Fields inherited from class org.springframework.http.converter.AbstractHttpMessageConverter

logger

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractKotlinSerializationHttpMessageConverter(T format, MediaType... supportedMediaTypes)	Construct an AbstractKotlinSerializationHttpMessageConverter with multiple supported media type and format.

Method Summary

Modifier and Type	Method	Description
boolean	canRead(ResolvableType type, @Nullable MediaType mediaType)	Indicates whether the given type can be read by this converter.
boolean	canWrite(ResolvableType type, Class<?> clazz, @Nullable MediaType mediaType)	Indicates whether the given class can be written by this converter.
final Object	read(ResolvableType type, HttpInputMessage inputMessage, @Nullable Map<String,Object> hints)	Read an object of the given type from the given input message, and returns it.
protected abstract Object	readInternal(kotlinx.serialization.KSerializer<Object> serializer, T format, HttpInputMessage inputMessage)	Reads the given input message with the given serializer and format.
protected boolean	supports(Class<?> clazz)	Indicates whether the given class is supported by this converter.
protected boolean	supportsRepeatableWrites(Object object)	Indicates whether this message converter can write the given object multiple times.
protected abstract void	writeInternal(Object object, kotlinx.serialization.KSerializer<Object> serializer, T format, HttpOutputMessage outputMessage)	Write the given object to the output message with the given serializer and format.
protected final void	writeInternal(Object object, ResolvableType type, HttpOutputMessage outputMessage, @Nullable Map<String,Object> hints)	Abstract template method that writes the actual body.

Methods inherited from class org.springframework.http.converter.AbstractSmartHttpMessageConverter

readInternal, write, writeInternal

Methods inherited from class org.springframework.http.converter.AbstractHttpMessageConverter

addDefaultHeaders, canRead, canRead, canWrite, canWrite, getContentLength, getDefaultCharset, getDefaultContentType, getSupportedMediaTypes, read, setDefaultCharset, setSupportedMediaTypes, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.http.converter.HttpMessageConverter

getSupportedMediaTypes, getSupportedMediaTypes

Methods inherited from interface org.springframework.http.converter.SmartHttpMessageConverter

canRead, canWrite, read, write

Constructor Details

AbstractKotlinSerializationHttpMessageConverter

protected AbstractKotlinSerializationHttpMessageConverter(T format,
 MediaType... supportedMediaTypes)

Construct an AbstractKotlinSerializationHttpMessageConverter with multiple supported media type and format.

Parameters:

format - the format

supportedMediaTypes - the supported media types

Method Details

supports

protected boolean supports(Class<?> clazz)

Description copied from class: AbstractHttpMessageConverter

Indicates whether the given class is supported by this converter.

Overrides:

supports in class AbstractSmartHttpMessageConverter<Object>

Parameters:

clazz - the class to test for support

Returns:

true if supported; false otherwise

canRead

public boolean canRead(ResolvableType type,
 @Nullable MediaType mediaType)

Description copied from interface: SmartHttpMessageConverter

Indicates whether the given type can be read by this converter. This method should perform the same checks as HttpMessageConverter.canRead(Class, MediaType) with additional ones related to the generic type.

Specified by:

canRead in interface SmartHttpMessageConverter<T extends kotlinx.serialization.SerialFormat>

Overrides:

canRead in class AbstractSmartHttpMessageConverter<Object>

Parameters:

type - the (potentially generic) type to test for readability. The type source may be used for retrieving additional information (the related method signature for example) when relevant.

mediaType - the media type to read, can be null if not specified. Typically, the value of a Content-Type header.

Returns:

true if readable; false otherwise

canWrite

public boolean canWrite(ResolvableType type,
 Class<?> clazz,
 @Nullable MediaType mediaType)

Description copied from interface: SmartHttpMessageConverter

Indicates whether the given class can be written by this converter.

This method should perform the same checks as HttpMessageConverter.canWrite(Class, MediaType) with additional ones related to the generic type.

Specified by:

canWrite in interface SmartHttpMessageConverter<T extends kotlinx.serialization.SerialFormat>

Overrides:

canWrite in class AbstractSmartHttpMessageConverter<Object>

Parameters:

type - the (potentially generic) target type to test for writability (can be ResolvableType.NONE if not specified). The type source may be used for retrieving additional information (the related method signature for example) when relevant.

clazz - the source object class to test for writability

mediaType - the media type to write (can be null if not specified); typically the value of an Accept header.

Returns:

true if writable; false otherwise

read

public final Object read(ResolvableType type,
 HttpInputMessage inputMessage,
 @Nullable Map<String,Object> hints)
                  throws IOException,
HttpMessageNotReadableException

Description copied from interface: SmartHttpMessageConverter

Read an object of the given type from the given input message, and returns it.

Parameters:

type - the (potentially generic) type of object to return. This type must have previously been passed to the canRead method of this interface, which must have returned true. The type source may be used for retrieving additional information (the related method signature for example) when relevant.

inputMessage - the HTTP input message to read from

hints - additional information about how to encode

Returns:

the converted object

Throws:

IOException - in case of I/O errors

HttpMessageNotReadableException - in case of conversion errors

readInternal

protected abstract Object readInternal(kotlinx.serialization.KSerializer<Object> serializer,
 T format,
 HttpInputMessage inputMessage)
                                throws IOException,
HttpMessageNotReadableException

Reads the given input message with the given serializer and format.

Throws:

IOException

HttpMessageNotReadableException

writeInternal

protected final void writeInternal(Object object,
 ResolvableType type,
 HttpOutputMessage outputMessage,
 @Nullable Map<String,Object> hints)
                            throws IOException,
HttpMessageNotWritableException

Description copied from class: AbstractSmartHttpMessageConverter

Abstract template method that writes the actual body. Invoked from AbstractSmartHttpMessageConverter.write(Object, ResolvableType, MediaType, HttpOutputMessage, Map).

Specified by:

writeInternal in class AbstractSmartHttpMessageConverter<Object>

Parameters:

object - the object to write to the output message

type - the type of object to write

outputMessage - the HTTP output message to write to

hints - additional information about how to encode

Throws:

IOException - in case of I/O errors

HttpMessageNotWritableException - in case of conversion errors

writeInternal

protected abstract void writeInternal(Object object,
 kotlinx.serialization.KSerializer<Object> serializer,
 T format,
 HttpOutputMessage outputMessage)
                               throws IOException,
HttpMessageNotWritableException

Write the given object to the output message with the given serializer and format.

Throws:

IOException

HttpMessageNotWritableException

supportsRepeatableWrites

protected boolean supportsRepeatableWrites(Object object)

Description copied from class: AbstractHttpMessageConverter

Indicates whether this message converter can write the given object multiple times.

The default implementation returns false.

Overrides:

supportsRepeatableWrites in class AbstractHttpMessageConverter<Object>

Parameters:

object - the object t

Returns:

true if t can be written repeatedly; false otherwise