org.activiti.engine.impl.juel

Class AstFunction

java.lang.Object

org.activiti.engine.impl.juel.AstNode

org.activiti.engine.impl.juel.AstRightValue

org.activiti.engine.impl.juel.AstFunction

All Implemented Interfaces:

ExpressionNode, FunctionNode, Node

public class AstFunction
extends AstRightValue
implements FunctionNode

Constructor Summary

Constructors

Constructor and Description
AstFunction(String name, int index, AstParameters params)
AstFunction(String name, int index, AstParameters params, boolean varargs)

Method Summary

Methods

Modifier and Type	Method and Description
void	appendStructure(StringBuilder b, Bindings bindings)
Object	eval(Bindings bindings, ELContext context)
int	getCardinality() Get the node's number of children.
AstNode	getChild(int i) Get i'th child
int	getIndex() Get the unique index of this identifier in the expression (e.g.
String	getName() Get the full function name
protected AstNode	getParam(int i)
int	getParamCount() Get the number of parameters for this function
protected Object	invoke(Bindings bindings, ELContext context, Object base, Method method) Invoke method.
boolean	isVarArgs()
String	toString()

Methods inherited from class org.activiti.engine.impl.juel.AstRightValue

getMethodInfo, getType, getValueReference, invoke, isLeftValue, isLiteralText, isMethodInvocation, isReadOnly, setValue

Methods inherited from class org.activiti.engine.impl.juel.AstNode

getStructuralId, getValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AstFunction

public AstFunction(String name,
           int index,
           AstParameters params)

AstFunction

public AstFunction(String name,
           int index,
           AstParameters params,
           boolean varargs)

Method Detail

invoke

protected Object invoke(Bindings bindings,
            ELContext context,
            Object base,
            Method method)
                 throws InvocationTargetException,
                        IllegalAccessException

Invoke method.

Parameters:

bindings -

context -

base -

method -

Returns:

method result

Throws:

InvocationTargetException

IllegalAccessException

eval

public Object eval(Bindings bindings,
          ELContext context)

Specified by:

eval in class AstNode

toString

public String toString()

Overrides:

toString in class Object

appendStructure

public void appendStructure(StringBuilder b,
                   Bindings bindings)

Specified by:

appendStructure in class AstNode

getIndex

public int getIndex()

Description copied from interface: FunctionNode

Get the unique index of this identifier in the expression (e.g. preorder index)

Specified by:

getIndex in interface FunctionNode

getName

public String getName()

Description copied from interface: FunctionNode

Get the full function name

Specified by:

getName in interface FunctionNode

isVarArgs

public boolean isVarArgs()

Specified by:

isVarArgs in interface FunctionNode

Returns:

true if this node supports varargs.

getParamCount

public int getParamCount()

Description copied from interface: FunctionNode

Get the number of parameters for this function

Specified by:

getParamCount in interface FunctionNode

getParam

protected AstNode getParam(int i)

getCardinality

public int getCardinality()

Description copied from interface: Node

Get the node's number of children.

Specified by:

getCardinality in interface Node

getChild

public AstNode getChild(int i)

Description copied from interface: Node

Get i'th child

Specified by:

getChild in interface Node