Package org.apache.camel.component.aws2.ddb.transform

Class Ddb2JsonDataTypeTransformer

java.lang.Object
org.apache.camel.support.service.BaseService
org.apache.camel.support.service.ServiceSupport
org.apache.camel.spi.Transformer
org.apache.camel.component.aws2.ddb.transform.Ddb2JsonDataTypeTransformer
All Implemented Interfaces:
AutoCloseable, org.apache.camel.CamelContextAware, org.apache.camel.Service, org.apache.camel.ShutdownableService, org.apache.camel.spi.HasCamelContext, org.apache.camel.StatefulService, org.apache.camel.SuspendableService
@DataTypeTransformer(name="aws2-ddb:application-json") public class Ddb2JsonDataTypeTransformer extends org.apache.camel.spi.Transformer
Maps Json body to DynamoDB attribute value map and sets the attribute map as Camel DynamoDB header entries. Json property names map to attribute keys and Json property values map to attribute values. During mapping the Json property types resolve to the respective attribute types (String, StringSet, Boolean, Number, NumberSet, Map, Null). Primitive typed arrays in Json get mapped to StringSet or NumberSet attribute values. The input type supports the operations: PutItem, UpdateItem, DeleteItem For PutItem operation the Json body defines all item attributes. For DeleteItem operation the Json body defines only the primary key attributes that identify the item to delete. For UpdateItem operation the Json body defines both key attributes to identify the item to be updated and all item attributes tht get updated on the item. The given Json body can use "operation", "key" and "item" as top level properties that will be mapped to respective attribute value maps: 
 
 {
   "operation": "PutItem"
   "key": {},
   "item": {}
 }
The transformer will extract the objects and set respective attribute value maps as header entries. This is a comfortable way to define different key and item attribute value maps e.g. on UpdateItem operation. In case key and item attribute value maps are identical you can omit the special top level properties completely. The transformer will map the whole Json body as is then and use it as source for the attribute value map.

  • Field Summary

    Fields inherited from class org.apache.camel.support.service.BaseService

    BUILT, FAILED, INITIALIZED, INITIALIZING, lock, NEW, SHUTDOWN, SHUTTING_DOWN, STARTED, STARTING, status, STOPPED, STOPPING, SUSPENDED, SUSPENDING

  • Constructor Summary

    Constructors
    Constructor
    Description
    Ddb2JsonDataTypeTransformer()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    transform(org.apache.camel.Message message, org.apache.camel.spi.DataType fromType, org.apache.camel.spi.DataType toType)
     

    Methods inherited from class org.apache.camel.spi.Transformer

    doStop, getCamelContext, getFrom, getName, getTo, setCamelContext, setFrom, setName, setName, setTo, toString

    Methods inherited from class org.apache.camel.support.service.BaseService

    build, doBuild, doFail, doInit, doLifecycleChange, doResume, doShutdown, doStart, doSuspend, fail, getStatus, init, isBuild, isInit, isNew, isRunAllowed, isShutdown, isStarted, isStarting, isStartingOrStarted, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, isSuspendingOrSuspended, resume, shutdown, start, stop, suspend

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    Methods inherited from interface org.apache.camel.Service

    build, close, init, start, stop

    Methods inherited from interface org.apache.camel.ShutdownableService

    shutdown

    Methods inherited from interface org.apache.camel.StatefulService

    getStatus, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isSuspending

    Methods inherited from interface org.apache.camel.SuspendableService

    isSuspended, resume, suspend

  • Constructor Details

    • Ddb2JsonDataTypeTransformer

      public Ddb2JsonDataTypeTransformer()

  • Method Details

    • transform

      public void transform(org.apache.camel.Message message, org.apache.camel.spi.DataType fromType, org.apache.camel.spi.DataType toType)
      Specified by:
      transform in class org.apache.camel.spi.Transformer