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## org.apache.commons.jexl.util.introspection
Interface VelPropertySet

All Known Implementing Classes:
  UberspectImpl.VelSetterImpl

public interface VelPropertySet

Interface used for setting values that appear to be properties in Velocity. Ex. #set($foo.bar = "hello")

Since:
  1.0
Version:
  $Id: VelPropertySet.java 398515 2006-05-01 03:46:33Z dion $

Method Summary
`String` | `getMethodName()` returns the method name used to set this 'property'.
`Object` | `invoke(Object o, Object arg)` method used to set the value in the object.
`boolean` | `isCacheable()` specifies if this VelPropertySet is cacheable and able to be reused for this class of object it was returned for.

Method Detail

### invoke

    public Object invoke(Object o,
                         Object arg)
                  throws Exception

  method used to set the value in the object.
  Parameters:
    `o` - Object on which the method will be called with the arg
    `arg` - value to be set
  Returns:
    the value returned from the set operation (impl specific)
  Throws:
    `Exception` - on any error.

### isCacheable

    public boolean isCacheable()

  specifies if this VelPropertySet is cacheable and able to be reused for this class of object it was returned for.
  Returns:
    true if can be reused for this class, false if not

### getMethodName

    public String getMethodName()

  returns the method name used to set this 'property'.
  Returns:
    the method name.

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