Example usage for com.fasterxml.jackson.databind ObjectReader withType

Introduction

In this page you can find the example usage for com.fasterxml.jackson.databind ObjectReader withType.

Prototype

public ObjectReader withType(TypeReference<?> valueTypeRef) 

Source Link

Document

Method for constructing a new reader instance that is configured to data bind into specified type.

Usage

From source file:de.dfki.kiara.jsonrpc.JsonRpcMessage.java

@Override
public ResponseObject getResponseObject(TypeToken<?> returnType) throws MessageDeserializationException {
    if (this.response != null) {
        return this.response;
    }/*w  ww .  j  a v  a2  s  .c om*/

    if (this.kind != Kind.RESPONSE && this.kind != Kind.EXCEPTION) {
        throw new IllegalStateException("not a response message");
    }

    if (this.kind == Kind.RESPONSE) {
        try {
            final ObjectReader reader = protocol.getObjectReader();
            final JsonParser parser = reader.treeAsTokens(this.params);
            final Object result = reader.withType(returnType.getType()).readValue(parser);
            this.response = new Message.ResponseObject(result, false);
            return this.response;
        } catch (JsonProcessingException ex) {
            throw new MessageDeserializationException(ex);
        } catch (IOException ex) {
            throw new MessageDeserializationException(ex);
        }
    } else {
        JsonRpcError jsonRpcError;
        try {
            jsonRpcError = protocol.getObjectReader().treeToValue(this.error, JsonRpcError.class);
        } catch (JsonProcessingException ex) {
            throw new MessageDeserializationException(ex);
        }
        this.response = new Message.ResponseObject(new GenericRemoteException(jsonRpcError.getMessage(),
                jsonRpcError.getCode(), jsonRpcError.getData()), true);
        return this.response;
    }
}

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From source file:de.dfki.kiara.jsonrpc.JsonRpcMessage.java

@Override
public RequestObject getRequestObject(TypeToken<?>[] paramTypes) throws MessageDeserializationException {
    if (this.request != null) {
        return this.request;
    }//w ww  .  jav  a2  s  .  c o  m

    if (this.kind != Kind.REQUEST) {
        throw new IllegalStateException("not a request message");
    }

    Object[] args = null;
    if (params != null) {
        if (!params.isArray() && !params.isObject()) {
            throw new MessageDeserializationException("Member 'params' is neither array nor object");
        }

        if (params.isArray()) {
            args = new Object[paramTypes.length];

            int i = 0; // parameter index
            final int numParams = params.size();
            final int numParamTypes = paramTypes.length;
            final ObjectReader reader = protocol.getObjectReader();
            for (int j = 0; j < numParamTypes; ++j) {
                if (paramTypes[j] == null) // this parameter will be set later
                    continue;
                if (i >= numParams)
                    throw new MessageDeserializationException(
                            "Parameter index " + i + " is out of bounds, 'params' size is: " + numParams);
                try {
                    final JsonParser parser = reader.treeAsTokens(params.get(i));
                    args[j] = reader.withType(paramTypes[j].getType()).readValue(parser);
                } catch (JsonProcessingException ex) {
                    throw new MessageDeserializationException(ex);
                } catch (IOException ex) {
                    throw new MessageDeserializationException(ex);
                }
                ++i;
            }

            if (i != numParams)
                throw new MessageDeserializationException(
                        "Deserialzed " + i + " parameters, but required " + numParams);

        } else {
            throw new UnsupportedOperationException("Object is not supported as 'params' member");
        }
    }
    this.request = new RequestObject(methodName, args);
    return this.request;
}

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