net.morimekta.providence.serializer

Class JsonSerializer

java.lang.Object

net.morimekta.providence.serializer.Serializer

net.morimekta.providence.serializer.JsonSerializer

public class JsonSerializer
extends Serializer

Compact JSON serializer. This uses the most compact type-safe JSON format allowable. There are two optional variants switching the struct field ID between numeric ID and field name.

Format is like this:

 {
     "id":value,
     "structId":{ ... },
     "listId":[value1,value2],
     "mapId":{"id1":value1,"id2":value2}
 }
 

But without formatting spaces. The formatted JSON can be read normally. Binary fields are base64 encoded.

This format supports 'compact' struct formatting. A compact struct is formatted as a list with fields in order from 1 to N. E.g.:

 ["tag",5,6.45]
 

is equivalent to:

 {"1":"tag","2":5,"3":6.45}
 

Field Summary

Fields

Modifier and Type	Field and Description
static String	JSON_MEDIA_TYPE
static String	MEDIA_TYPE

Fields inherited from class net.morimekta.providence.serializer.Serializer

DEFAULT_STRICT

Constructor Summary

Constructors

Constructor and Description
JsonSerializer()
JsonSerializer(boolean strict)

Method Summary

Modifier and Type	Method and Description
boolean	binaryProtocol()
<T extends PMessage<T>> T	deserialize(InputStream input, PMessageDescriptor<T> type) Deserialize a message.
<T extends PMessage<T>> PServiceCall<T>	deserialize(InputStream input, PService service) Deserialize a service call.
<T extends PMessage<T>> T	deserialize(Reader input, PMessageDescriptor<T> type)
JsonSerializer	grpc()
String	mediaType()
JsonSerializer	named()
static <Message extends PMessage<Message>> Message	parseJsonString(String string, PMessageDescriptor<Message> descriptor) Parses a JSON string, and makes exceptions unchecked.
JsonSerializer	pretty()
<T extends PMessage<T>> int	serialize(OutputStream output, PMessageOrBuilder<T> message) Serialize a message.
<T extends PMessage<T>> int	serialize(OutputStream output, PServiceCall<T> call) Serialize a service call.
<T extends PMessage<T>> void	serialize(PrintWriter output, PMessageOrBuilder<T> message)
static <Message extends PMessage<Message>> String	toJsonString(PMessageOrBuilder<Message> message) Prints a JSON string of the provided message.
static <Message extends PMessage<Message>> String	toPrettyJsonString(PMessageOrBuilder<Message> message) Prints a pretty formatted JSON string of the provided message.
void	verifyEndOfContent(InputStream input) Verify that the input stream does not contain any more readable content and close the stream.
void	verifyEndOfContent(Reader input)
JsonSerializer	withFlattenUnionOf()
JsonSerializer	withIdEnums()
JsonSerializer	withIdFields()
JsonSerializer	withNamedEnums()
JsonSerializer	withNamedFields()
JsonSerializer	withPojoNamedFields()

Methods inherited from class net.morimekta.providence.serializer.Serializer

isRequestCallType, toString

Methods inherited from class java.lang.Object

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

Field Detail

MEDIA_TYPE

public static final String MEDIA_TYPE

See Also:

Constant Field Values

JSON_MEDIA_TYPE

public static final String JSON_MEDIA_TYPE

See Also:

Constant Field Values

Constructor Detail

JsonSerializer

public JsonSerializer()

JsonSerializer

public JsonSerializer(boolean strict)

Method Detail

toJsonString

@Nonnull
public static <Message extends PMessage<Message>> String toJsonString(PMessageOrBuilder<Message> message)

Prints a JSON string of the provided message.

Type Parameters:

Message - The message type.

Parameters:

message - The message to stringify.

Returns:

The resulting string.

toPrettyJsonString

@Nonnull
public static <Message extends PMessage<Message>> String toPrettyJsonString(PMessageOrBuilder<Message> message)

Prints a pretty formatted JSON string of the provided message.

Type Parameters:

Message - The message type.

Parameters:

message - The message to stringify.

Returns:

The resulting string.

parseJsonString

@Nonnull
public static <Message extends PMessage<Message>> Message parseJsonString(String string,
                                                                                   PMessageDescriptor<Message> descriptor)

Parses a JSON string, and makes exceptions unchecked.

Type Parameters:

Message - The message type.

Parameters:

string - The message string to parse.

descriptor - The message descriptor.

Returns:

The parsed message.

pretty

public JsonSerializer pretty()

named

public JsonSerializer named()

grpc

public JsonSerializer grpc()

withPojoNamedFields

public JsonSerializer withPojoNamedFields()

withNamedFields

public JsonSerializer withNamedFields()

withNamedEnums

public JsonSerializer withNamedEnums()

withIdFields

public JsonSerializer withIdFields()

withIdEnums

public JsonSerializer withIdEnums()

withFlattenUnionOf

public JsonSerializer withFlattenUnionOf()

serialize

public <T extends PMessage<T>> void serialize(@Nonnull
                                              PrintWriter output,
                                              @Nonnull
                                              PMessageOrBuilder<T> message)
                                       throws IOException

Throws:

IOException

serialize

public <T extends PMessage<T>> int serialize(@Nonnull
                                             OutputStream output,
                                             @Nonnull
                                             PMessageOrBuilder<T> message)
                                      throws IOException

Description copied from class: Serializer

Serialize a message.

Specified by:

serialize in class Serializer

Type Parameters:

T - The message type.

Parameters:

output - The output stream to write to.

message - The message to write.

Returns:

The number of bytes written to the output stream.

Throws:

IOException - If writing or serialization failed.

serialize

public <T extends PMessage<T>> int serialize(@Nonnull
                                             OutputStream output,
                                             @Nonnull
                                             PServiceCall<T> call)
                                      throws IOException

Description copied from class: Serializer

Serialize a service call.

Specified by:

serialize in class Serializer

Type Parameters:

T - The message type contained in the service call.

Parameters:

output - The output stream to write to.

call - The service call to write.

Returns:

The number of bytes written to the output stream.

Throws:

IOException - If writing or serialization failed.

deserialize

@Nonnull
public <T extends PMessage<T>> T deserialize(@Nonnull
                                                      InputStream input,
                                                      @Nonnull
                                                      PMessageDescriptor<T> type)
                                               throws IOException

Description copied from class: Serializer

Deserialize a message.

Specified by:

deserialize in class Serializer

Type Parameters:

T - The message type.

Parameters:

input - The input stream to read from.

type - The descriptor of the message to read.

Returns:

The message read.

Throws:

IOException - If reading or deserialization failed.

deserialize

public <T extends PMessage<T>> T deserialize(@Nonnull
                                             Reader input,
                                             @Nonnull
                                             PMessageDescriptor<T> type)
                                      throws IOException

Throws:

IOException

deserialize

@Nonnull
public <T extends PMessage<T>> PServiceCall<T> deserialize(@Nonnull
                                                                    InputStream input,
                                                                    @Nonnull
                                                                    PService service)
                                                             throws IOException

Description copied from class: Serializer

Deserialize a service call.

Specified by:

deserialize in class Serializer

Type Parameters:

T - The message type contained in the returned service call.

Parameters:

input - The input stream to read from.

service - The service definition to read for.

Returns:

The service call read.

Throws:

IOException - If reading or deserialization failed.

binaryProtocol

public boolean binaryProtocol()

Specified by:

binaryProtocol in class Serializer

Returns:

True if the protocol of the serializer is "binary" a.k.a. unreadable to most humans.

verifyEndOfContent

public void verifyEndOfContent(@Nonnull
                               InputStream input)
                        throws IOException

Description copied from class: Serializer

Verify that the input stream does not contain any more readable content and close the stream. Throws exception if unable to verify, or the streams contains any meaningful content.

Specified by:

verifyEndOfContent in class Serializer

Parameters:

input - The input stream to check.

Throws:

IOException - If unable to read from stream or stream contains meaningful content.

verifyEndOfContent

public void verifyEndOfContent(@Nonnull
                               Reader input)
                        throws IOException

Throws:

IOException

mediaType

@Nonnull
public String mediaType()

Specified by:

mediaType in class Serializer

Returns:

Media type of the content generated by the serializer. Can be used for Content-Type and Accept HTTP headers, MIME type etc.