Package com.vaadin.flow.server.communication.rpc

Class StringToEnumDecoder

java.lang.Object

com.vaadin.flow.server.communication.rpc.StringToEnumDecoder

All Implemented Interfaces:

RpcDecoder, Serializable

public class StringToEnumDecoder
extends Object
implements RpcDecoder

Decodes a JsonValue with JsonType.STRING type to Enum subclass type.

This decoder is applicable to any JsonValue which is JsonString and any Enum sublcass

For internal use only. May be renamed or removed in a future release.

Since:

1.0

Author:

Vaadin Ltd

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
StringToEnumDecoder()

Method Summary

Modifier and Type	Method	Description
<T> T	decode(elemental.json.JsonValue value, Class<T> type)	Decode the given value to the required type.
boolean	isApplicable(elemental.json.JsonValue value, Class<?> type)	Returns true if the decoder is applicable for the given value and the required type.

Methods inherited from class java.lang.Object

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

Constructor Details

StringToEnumDecoder

public StringToEnumDecoder()

Method Details

isApplicable

public boolean isApplicable(elemental.json.JsonValue value,
 Class<?> type)

Description copied from interface: RpcDecoder

Returns true if the decoder is applicable for the given value and the required type.

Specified by:

isApplicable in interface RpcDecoder

Parameters:

value - the value which needs to be decoded

type - the required type to decode

Returns:

true if this decoder is able to decode the value to the type, false otherwise

decode

public <T> T decode(elemental.json.JsonValue value,
 Class<T> type)
             throws RpcDecodeException

Description copied from interface: RpcDecoder

Decode the given value to the required type.

RpcDecodeException is thrown if the value cannot be converted to the type (even though the decoder is applicable for the value and the type).

Specified by:

decode in interface RpcDecoder

Type Parameters:

T - the decoded value type

Parameters:

value - the value which needs to be decoded

type - the required type to decode

Returns:

the decoded value

Throws:

RpcDecodeException - if the value cannot be converted to the type