JexlPropertyGet

All Known Implementing Classes:: AbstractExecutor.Get, BooleanGetExecutor, DuckGetExecutor, ListGetExecutor, MapGetExecutor, PropertyGetExecutor, UberspectImpl.FieldPropertyGet

public interface JexlPropertyGet

Interface for getting values that appear to be properties. Ex.


${foo.bar}

Since:: 1.0

Method Summary

Modifier and Type

Method

Description

Object

invoke(Object obj)

Method used to get the property value of an object.

boolean

isCacheable()

Specifies if this JexlPropertyGet is cacheable and able to be reused for this class of object it was returned for.

boolean

tryFailed(Object rval)

Checks whether a tryInvoke failed or not.

Object

tryInvoke(Object obj, Object key)

Attempts to reuse this JexlPropertyGet, checking that it is compatible with the actual set of arguments.

Method Details
- invoke
  
  Object invoke(Object obj) throws Exception
  
  Method used to get the property value of an object.
  
  Parameters:
  
  obj - the object to get the property value from.
  
  Returns:
  
  the property value.
  
  Throws:
  
  Exception - on any error.
- tryInvoke
  
  Object tryInvoke(Object obj, Object key)
  
  Attempts to reuse this JexlPropertyGet, checking that it is compatible with the actual set of arguments.
  
  Parameters:
  
  obj - the object to invoke the property get upon
  
  key - the property key to get
  
  Returns:
  
  the result of the method invocation that should be checked by tryFailed to determine if it succeeded or failed.
- tryFailed
  
  boolean tryFailed(Object rval)
  
  Checks whether a tryInvoke failed or not.
  
  Parameters:
  
  rval - the value returned by tryInvoke
  
  Returns:
  
  true if tryInvoke failed, false otherwise
- isCacheable
  
  boolean isCacheable()
  
  Specifies if this JexlPropertyGet 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