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com.vaadin.flow.server.communication.
Class ServerRpcHandler
- java.lang.Object
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- com.vaadin.flow.server.communication.ServerRpcHandler
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All Implemented Interfaces:
public class ServerRpcHandler extends Object implements SerializableHandles a client-to-server message containing serialized RPC invocations.
Since:
1.0
Author:
Vaadin Ltd
See Also:
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Nested Class Summary
Nested Classes Modifier and Type Class and Description static classServerRpcHandler.InvalidUIDLSecurityKeyExceptionException thrown then the security key sent by the client does not match the expected one.
static classServerRpcHandler.RpcRequestA data transfer object representing an RPC request sent by the client side.
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Field Summary
Fields Modifier and Type Field and Description static StringWIDGETSET_MISMATCH_INFO
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Constructor Summary
Constructors Constructor and Description ServerRpcHandler()
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Method Summary
All Methods Modifier and Type Method and Description protected Map<String,RpcInvocationHandler>getInvocationHandlers()Gets
RpcInvocationHandlers map where the key is the type of the handler gotten viaRpcInvocationHandler.getRpcType().protected StringgetMessage(Reader reader)voidhandleRpc(UI ui, Reader reader, VaadinRequest request)Reads JSON containing zero or more serialized RPC calls (including legacy variable changes) and executes the calls.
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Field Detail
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WIDGETSET_MISMATCH_INFO
public static final String WIDGETSET_MISMATCH_INFOSee Also:
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Method Detail
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handleRpc
public void handleRpc(UI ui, Reader reader, VaadinRequest request) throws IOException, ServerRpcHandler.InvalidUIDLSecurityKeyExceptionReads JSON containing zero or more serialized RPC calls (including legacy variable changes) and executes the calls.
Parameters:
ui- TheUIreceiving the calls. Cannot be null.reader- TheReaderused to read the JSON.request- The request through which the RPC was receivedThrows:
IOException- If reading the message fails.ServerRpcHandler.InvalidUIDLSecurityKeyException- If the received security key does not match the one stored in the session.
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getInvocationHandlers
protected Map<String,RpcInvocationHandler> getInvocationHandlers()Gets
RpcInvocationHandlers map where the key is the type of the handler gotten viaRpcInvocationHandler.getRpcType().This map is used to delegate RPC requests to a specific invocation handler using the type of the request.
Subclasses can overwrite this method to return custom invocation handlers.
Returns:
invocation handlers map
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getMessage
protected String getMessage(Reader reader) throws IOExceptionThrows:
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