Interface JexlPropertyGet
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- All Known Implementing Classes:
AbstractExecutor.Get
,BooleanGetExecutor
,DuckGetExecutor
,FieldGetExecutor
,IndexedType
,ListGetExecutor
,MapGetExecutor
,PropertyGetExecutor
public interface JexlPropertyGet
Interface for getting values that appear to be properties. Ex.${foo.bar}
- Since:
- 1.0
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description java.lang.Object
invoke(java.lang.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(java.lang.Object rval)
Checks whether a tryInvoke failed or not.java.lang.Object
tryInvoke(java.lang.Object obj, java.lang.Object key)
Attempts to reuse this JexlPropertyGet, checking that it is compatible with the actual set of arguments.
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Method Detail
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invoke
java.lang.Object invoke(java.lang.Object obj) throws java.lang.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:
java.lang.Exception
- on any error.
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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
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tryFailed
boolean tryFailed(java.lang.Object rval)
Checks whether a tryInvoke failed or not.- Parameters:
rval
- the value returned by tryInvoke- Returns:
- true if tryInvoke failed, false otherwise
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tryInvoke
java.lang.Object tryInvoke(java.lang.Object obj, java.lang.Object key) throws JexlException.TryFailed
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 uponkey
- 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.
- Throws:
JexlException.TryFailed
- if the underlying method was invoked but threw an exception (InvocationTargetException
)
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