/*
* Copyright 2013, The Sporting Exchange Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.betfair.cougar.client;
import com.betfair.cougar.core.api.exception.CougarValidationException;
import com.betfair.cougar.core.api.exception.ServerFaultCode;
import com.betfair.cougar.core.api.transcription.Parameter;
import com.betfair.cougar.transport.api.protocol.http.rescript.RescriptOperationBindingDescriptor;
import com.betfair.cougar.transport.api.protocol.http.rescript.RescriptParamBindingDescriptor;
import com.betfair.cougar.transport.api.protocol.http.rescript.RescriptParamBindingDescriptor.ParamSource;
/**
* Constructs a Message object based on provided args[], Parameters and RescriptOperationBindingDescriptor.
*
*/
public class MessageBuilder {
public Message build(Object[] args,
Parameter[] parameters,
RescriptOperationBindingDescriptor operationBinding) {
int argIndex = 0;
Message message = new Message();
for (Parameter param : parameters) {
String parameterName = param.getName();
RescriptParamBindingDescriptor paramDescriptor = operationBinding.getHttpParamBindingDescriptor(parameterName);
ParamSource parameterSource = paramDescriptor.getSource();
Object currentArgument = null;
if (argIndex < args.length) {
currentArgument = args[argIndex++];
}
if (param.isMandatory() && currentArgument == null) {
throw new CougarValidationException(ServerFaultCode.MandatoryNotDefined,"MANDATORY parameter cannot be null: " + parameterName);
}
switch (parameterSource) {
case BODY:
// need to put the argument in the request body
message.addRequestBody(parameterName, currentArgument);
break;
case HEADER:
// need to put the argument in the header
if (currentArgument != null) {
message.addHeaderParm(parameterName, currentArgument.toString());
}
break;
case QUERY:
// Need to put the argument in the query string for this
// parameter
if (currentArgument != null) {
message.addQueryParm(parameterName, currentArgument);
}
break;
default:
throw new UnsupportedOperationException(parameterSource + " is not supported");
}
}
return message;
}
}