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## org.mule.expression
Class OutboundHeadersExpressionEvaluator

    java.lang.Object
      org.mule.expression.OutboundHeadersExpressionEvaluator

All Implemented Interfaces:
  ExpressionEvaluator, NamedObject

    public class OutboundHeadersExpressionEvaluator

extends Object
implements ExpressionEvaluator

Creates a Map facade around a `MuleMessage` instance to allow access to outbound headers from within components and transformers without the these objects needing access to the Mule Message

Nested Class Summary
`static class` | `OutboundHeadersExpressionEvaluator.SendHeadersMap`

Field Summary
`protected Log` | `logger` logger used by this class
`static String` | `NAME`

Constructor Summary
`OutboundHeadersExpressionEvaluator()`

Method Summary
`Object` | `evaluate(String expression, MuleMessage message)` Extracts a single property from the message
`String` | `getName()` Gets the name of the object
`void` | `setName(String name)` Sets the name of the object

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

Field Detail

### NAME

    public static final String NAME

See Also:
  Constant Field Values

### logger

    protected final transient Log logger

  logger used by this class

Constructor Detail

### OutboundHeadersExpressionEvaluator

    public OutboundHeadersExpressionEvaluator()

Method Detail

### evaluate

    public Object evaluate(String expression,
                           MuleMessage message)

  Description copied from interface: `ExpressionEvaluator`
  Extracts a single property from the message

  Specified by:
    `evaluate` in interface `ExpressionEvaluator`
  Parameters:
    `expression` - the property expression or expression
    `message` - the message to extract from
  Returns:
    the result of the extraction or null if the property was not found

### getName

    public String getName()

  Gets the name of the object

  Specified by:
    `getName` in interface `NamedObject`
  Returns:
    the name of the object

### setName

    public void setName(String name)

  Sets the name of the object

  Specified by:
    `setName` in interface `NamedObject`
  Parameters:
    `name` - the name of the object

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