MapLookup (Mule ESB 2.2.1 API)
Keywords: org.mule.transformer.simple.MapLookup class

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## org.mule.transformer.simple
Class MapLookup

    java.lang.Object
      org.mule.transformer.AbstractTransformer
          org.mule.transformer.simple.MapLookup

All Implemented Interfaces:
  Initialisable, NamedObject, BaseTransformer, Transformer

    public class MapLookup

extends AbstractTransformer

`MapLookup` looks up and returns an object from a Map based on a key.

Field Summary
`protected Object` | `key`

Fields inherited from class org.mule.transformer.AbstractTransformer
`DEFAULT_TRUNCATE_LENGTH, endpoint, logger, name, returnClass, sourceTypes`

Fields inherited from interface org.mule.api.lifecycle.Initialisable
`PHASE_NAME`

Constructor Summary
`MapLookup()`

Method Summary
`Object` | `doTransform(Object src, String encoding)`
`Object` | `getKey()`
`void` | `setKey(Object key)`

Methods inherited from class org.mule.transformer.AbstractTransformer
`checkReturnClass, generateTransformerName, getEndpoint, getName, getReturnClass, getSourceTypes, initialise, isAcceptNull, isConsumed, isIgnoreBadInput, isSourceTypeSupported, isSourceTypeSupported, registerSourceType, setEndpoint, setIgnoreBadInput, setName, setReturnClass, toString, transform, unregisterSourceType`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### key

    protected volatile Object key

Constructor Detail

### MapLookup

    public MapLookup()

Method Detail

### doTransform

    public Object doTransform(Object src,
                              String encoding)
                       throws TransformerException

  Specified by:
    `doTransform` in class `AbstractTransformer`
  Throws:
    `TransformerException`

### getKey

    public Object getKey()

### setKey

    public void setKey(Object key)

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