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Date: Mon, 24 Nov 2014 07:55:04 +0000
From: Tim Dudgeon <tdudgeon.ml@gmail.com>
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To: users@camel.apache.org
Subject: Re: POJO binding with the Rest DSL
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Yes, I understand that, and got it working that way.
I had misunderstood where the POJO binding fitted in.
Thanks for your help.

Tim


On 22/11/2014 09:27, Claus Ibsen wrote:
> Hi
>
> The rest DSL is on the other side, eg on the server side, to exposes
> Camel routes as REST services.
> Not on the client side how to call another REST service.
>
> For POJO -> Json you can use jackson to turn that into json.
>
> On Fri, Nov 21, 2014 at 6:41 PM, Tim Dudgeon <tdudgeon.ml@gmail.com> wrote:
>> OK, that figures, and I got it to work.
>> But it seems to circumvent the whole purpose of the POJO binding with rest
>> DSL.
>> How are you supposed to send POJO to Rest DSL within Camel.
>> I briefly tried using restlet like this:
>>
>> t.requestBody('restlet:http://$BASE_URL/foo?restletMethod=POST', p)
>>
>> but that didn't work.
>>
>> Thanks
>> Tim
>>
>>
>>
>>
>>
>> On 21/11/2014 17:12, Claus Ibsen wrote:
>>> Hi
>>>
>>> Its the client code you write to send the Person using http4. It does
>>> not know how to convert that to json. You need to convert it to json
>>> first, and then send that instead of the Person java object.
>>>
>>> On Fri, Nov 21, 2014 at 5:56 PM, Tim Dudgeon <tdudgeon.ml@gmail.com>
>>> wrote:
>>>> I'm having problems getting POJO binding working with the Rest DSL.
>>>> I put together a simple example in Groovy, but it fails:
>>>>
>>>>
>>>>
>>>> package com.im.examples.search
>>>>
>>>> import org.apache.camel.CamelContext
>>>> import org.apache.camel.ProducerTemplate
>>>> import org.apache.camel.builder.RouteBuilder
>>>> import org.apache.camel.impl.DefaultCamelContext
>>>> import org.apache.camel.model.rest.RestBindingMode
>>>> import org.apache.camel.model.dataformat.JsonLibrary
>>>>
>>>> String HOST = 'localhost'
>>>> String PORT = '43256'
>>>> String BASE_URL = "$HOST:$PORT/search"
>>>>
>>>> class Person {
>>>>       String firstName
>>>>       String lastName
>>>> }
>>>>
>>>> CamelContext camelContext = new DefaultCamelContext()
>>>> camelContext.addRoutes(new RouteBuilder() {
>>>>           def void configure() {
>>>>
>>>> restConfiguration().component("restlet").host(HOST).port(PORT).bindingMode(RestBindingMode.json)
>>>>               rest("/search")
>>>>               .post("/foo").type(Person.class).to("direct:end")
>>>>               from('direct:end')
>>>>               .log('${body}')
>>>>               .transform().constant('Welcome')
>>>>               from('direct:testmarshal')
>>>>               .marshal().json(JsonLibrary.Jackson)
>>>>               .log('JSON: ${body}')
>>>>           }
>>>>       })
>>>> camelContext.start()
>>>>
>>>> Person p = new Person(firstName: 'John', lastName: 'Doe')
>>>> ProducerTemplate t = camelContext.createProducerTemplate()
>>>> t.sendBody('direct:testmarshal', p)
>>>> def resp = t.requestBody("http4:$BASE_URL/foo", p)
>>>> println "resp: $resp"
>>>>
>>>> camelContext.stop()
>>>>
>>>>
>>>>
>>>>
>>>> The error I get is:
>>>>
>>>>
>>>> Caused by: org.apache.camel.InvalidPayloadException: No body available of
>>>> type: java.io.InputStream but has value:
>>>> com.im.examples.search.Person@6c4b8217 of type:
>>>> com.im.examples.search.Person on: Message:
>>>> com.im.examples.search.Person@6c4b8217. Caused by: No type converter
>>>> available to convert from type: com.im.examples.search.Person to the
>>>> required type: java.io.InputStream with value
>>>> com.im.examples.search.Person@6c4b8217. Exchange[Message:
>>>> com.im.examples.search.Person@6c4b8217]. Caused by:
>>>> [org.apache.camel.NoTypeConversionAvailableException - No type converter
>>>> available to convert from type: com.im.examples.search.Person to the
>>>> required type: java.io.InputStream with value
>>>> com.im.examples.search.Person@6c4b8217]
>>>> at
>>>>
>>>> org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:101)
>>>> at
>>>>
>>>> org.apache.camel.component.http4.HttpProducer.createRequestEntity(HttpProducer.java:461)
>>>> at
>>>>
>>>> org.apache.camel.component.http4.HttpProducer.createMethod(HttpProducer.java:368)
>>>> at
>>>>
>>>> org.apache.camel.component.http4.HttpProducer.process(HttpProducer.java:106)
>>>> at
>>>>
>>>> org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
>>>> at
>>>>
>>>> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
>>>> at
>>>>
>>>> org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:74)
>>>> at
>>>>
>>>> org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:375)
>>>> at
>>>>
>>>> org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:343)
>>>> at
>>>> org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:233)
>>>> at
>>>> org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:343)
>>>> at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:201)
>>>> at
>>>>
>>>> org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:128)
>>>> at
>>>>
>>>> org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:132)
>>>> ... 28 more
>>>> Caused by: org.apache.camel.NoTypeConversionAvailableException: No type
>>>> converter available to convert from type: com.im.examples.search.Person
>>>> to
>>>> the required type: java.io.InputStream with value
>>>> com.im.examples.search.Person@6c4b8217
>>>> at
>>>>
>>>> org.apache.camel.impl.converter.BaseTypeConverterRegistry.mandatoryConvertTo(BaseTypeConverterRegistry.java:182)
>>>> at
>>>>
>>>> org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:99)
>>>> ... 41 more
>>>>
>>>>
>>>> I thought I had carefully followed the documentation :-(
>>>> Can anyone help spot what is wrong?
>>>>
>>>> Thanks
>>>> Tim
>>>>
>>>
>
>