FunctionInvocation (Commons EL 1.0.1-SNAPSHOT API)

java.lang.Object
- org.apache.commons.el.Expression
- - org.apache.commons.el.FunctionInvocation

Direct Known Subclasses:

BoundFunctionInvocation
```
public class FunctionInvocation
extends Expression
```
Represents a function call.

Author:

Shawn Bayern (in the style of Nathan's other classes)

Constructor Summary

Constructors
Constructor and Description

FunctionInvocation(String functionName, List argumentList)
Constructor

Constructors
Constructor and Description
`FunctionInvocation(String functionName, List argumentList)` Constructor

Method Summary

Methods
Modifier and Type	Method and Description
`Expression`	`bindFunctions(FunctionMapper functions)` Returns an expression with all `FunctionInvocation`s replaced by `BoundFunctionInvocation`s.
`Object`	`evaluate(VariableResolver pResolver, FunctionMapper functions)` Evaluates by looking up the name in the VariableResolver
`List`	`getArgumentList()`
`String`	`getExpressionString()` Returns the expression in the expression language syntax
`String`	`getFunctionName()`
`protected Method`	`resolveFunction(FunctionMapper functions)` Returns the `Method` which is mapped to the function name used by this `FunctionInvocation`.
`void`	`setArgumentList(List l)`
`void`	`setFunctionName(String f)`

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

- Constructor Detail
  - FunctionInvocation
```
public FunctionInvocation(String functionName,
                  List argumentList)
```
    Constructor
- Method Detail
  - getFunctionName
```
public String getFunctionName()
```
  - setFunctionName
```
public void setFunctionName(String f)
```
  - getArgumentList
```
public List getArgumentList()
```
  - setArgumentList
```
public void setArgumentList(List l)
```
  - getExpressionString
```
public String getExpressionString()
```
    Returns the expression in the expression language syntax
    
    Specified by:
    
    getExpressionString in class Expression
  - evaluate
```
public Object evaluate(VariableResolver pResolver,
              FunctionMapper functions)
                throws ELException
```
    Evaluates by looking up the name in the VariableResolver
    
    Specified by:
    
    evaluate in class Expression
    
    Throws:
    
    ELException
  - resolveFunction
```
protected Method resolveFunction(FunctionMapper functions)
                          throws ELException
```
    Returns the Method which is mapped to the function name used by this FunctionInvocation.
    
    Parameters:
    functions - The function mappings in use for this evaluation
    
    Returns:
    the Method to execute
    
    Throws:
    
    ELException
  - bindFunctions
```
public Expression bindFunctions(FunctionMapper functions)
                         throws ELException
```
    Description copied from class: Expression
    
    Returns an expression with all FunctionInvocations replaced by BoundFunctionInvocations.
    
    Specified by:
    
    bindFunctions in class Expression
    
    Parameters:
    functions - the functions to use in this transformation
    
    Returns:
    an Expression identical to this expression except with all FunctionInvocations replaced by BoundFunctionInvocations.
    
    Throws:
    
    ELException - if any of the functions in this Expression are not present in functions

Class FunctionInvocation

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FunctionInvocation

Method Detail

getFunctionName

setFunctionName

getArgumentList

setArgumentList

getExpressionString

evaluate

resolveFunction

bindFunctions