Thomas Diesler created CAMEL-9022:
-------------------------------------
Summary: JacksonTypeConverter breaks CSV marshalling
Key: CAMEL-9022
URL: https://issues.apache.org/jira/browse/CAMEL-9022
Project: Camel
Issue Type: Bug
Reporter: Thomas Diesler
Fix For: 2.16
Marshalling a Map to CSV internally converts a Map to a List. It seems that the
JacksonTypeConverters now claim to be able to this. It however fails with
{code}
Caused by: org.apache.camel.TypeConversionException: Error during type
conversion from type: java.lang.String to the required type: java.util.List
with value {firstName=John, lastName=Doe} due
java.lang.IllegalArgumentException: Can not deserialize instance of
java.util.ArrayList out of START_OBJECT token
at [Source: N/A; line: -1, column: -1]
at
org.apache.camel.impl.converter.BaseTypeConverterRegistry.createTypeConversionException(BaseTypeConverterRegistry.java:585)
at
org.apache.camel.impl.converter.BaseTypeConverterRegistry.convertTo(BaseTypeConverterRegistry.java:131)
at
org.apache.camel.util.ExchangeHelper.convertToType(ExchangeHelper.java:203)
at
org.apache.camel.dataformat.csv.CsvMarshaller.marshal(CsvMarshaller.java:77)
at
org.apache.camel.dataformat.csv.CsvDataFormat.marshal(CsvDataFormat.java:78)
at
org.apache.camel.processor.MarshalProcessor.process(MarshalProcessor.java:83)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:454)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at
org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:62)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109)
at
org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:68)
at
org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:404)
at
org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:372)
at
org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:262)
at
org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:372)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:230)
at
org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:128)
at
org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:132)
... 147 more
Caused by: org.apache.camel.RuntimeCamelException:
java.lang.IllegalArgumentException: Can not deserialize instance of
java.util.ArrayList out of START_OBJECT token
at [Source: N/A; line: -1, column: -1]
at
org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1642)
at
org.apache.camel.util.ObjectHelper.invokeMethod(ObjectHelper.java:1247)
at
org.apache.camel.impl.converter.StaticMethodFallbackTypeConverter.convertTo(StaticMethodFallbackTypeConverter.java:62)
at
org.apache.camel.impl.converter.BaseTypeConverterRegistry.doConvertTo(BaseTypeConverterRegistry.java:327)
at
org.apache.camel.impl.converter.BaseTypeConverterRegistry.convertTo(BaseTypeConverterRegistry.java:114)
... 166 more
Caused by: java.lang.IllegalArgumentException: Can not deserialize instance of
java.util.ArrayList out of START_OBJECT token
at [Source: N/A; line: -1, column: -1]
at
com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:3286)
at
com.fasterxml.jackson.databind.ObjectMapper.convertValue(ObjectMapper.java:3212)
at
org.apache.camel.component.jackson.converter.JacksonTypeConverters.convertTo(JacksonTypeConverters.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at
org.apache.camel.util.ObjectHelper.invokeMethod(ObjectHelper.java:1243)
... 169 more
Caused by: com.fasterxml.jackson.databind.JsonMappingException: Can not
deserialize instance of java.util.ArrayList out of START_OBJECT token
at [Source: UNKNOWN; line: -1, column: -1]
at
com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:148)
at
com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:835)
at
com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:831)
at
com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.handleNonArray(CollectionDeserializer.java:283)
at
com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:222)
at
com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:212)
at
com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:25)
at
com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:3281)
... 176 more
{code}
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