org.shapelogic.scripting
Class FunctionCalcInvoke<E>

java.lang.Object
  org.shapelogic.scripting.BaseScriptingFunction
      org.shapelogic.scripting.FunctionCalc0<E>
          org.shapelogic.scripting.FunctionCalcInvoke<E>

All Implemented Interfaces:

Calc0<E>, CalcInvoke<E>, CalcValue<E>, LazyCalc<E>

public class FunctionCalcInvoke<E>
extends FunctionCalc0<E>
implements CalcInvoke<E>

FunctionCalcInvoke based on an expression in a Scripting language using JSR 223.
Requires Groovy to be installed. Need special installation of groovy-engine.jar that need to be downloade from Sun.
Requires that the scripting language support the invocable interface.

Author:

Sami Badawi

Field Summary

protected boolean	_dirty
protected E	_value

Fields inherited from class org.shapelogic.scripting.BaseScriptingFunction

_expression, _functionName, _language, _scriptEngine, DEFAULT_LANGUAGE

Constructor Summary

FunctionCalcInvoke(java.lang.String functionName, java.lang.String expression)

FunctionCalcInvoke(java.lang.String functionName, java.lang.String expression, java.lang.String language)

Method Summary

E	getValue() Starts a lazy calculation.
boolean	isDirty() When dirty is false that means that the calculated value can be used
void	setup() Currently not super well define used for 2 purposes: Reset: called from the outside if you want to reuse it init: Called from the inside when calculation start to have everything setup maybe the semantic could work for both? TODO: This should be separated better.

Methods inherited from class org.shapelogic.scripting.FunctionCalc0

invoke

Methods inherited from class org.shapelogic.scripting.BaseScriptingFunction

getScriptEngine, put

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.shapelogic.calculation.Calc0

invoke

Field Detail

_dirty

protected boolean _dirty

_value

protected E _value

Constructor Detail

FunctionCalcInvoke

public FunctionCalcInvoke(java.lang.String functionName,
                          java.lang.String expression,
                          java.lang.String language)

FunctionCalcInvoke

public FunctionCalcInvoke(java.lang.String functionName,
                          java.lang.String expression)

Method Detail

isDirty

public boolean isDirty()

Description copied from interface: LazyCalc

When dirty is false that means that the calculated value can be used

Specified by:

isDirty in interface LazyCalc<E>

setup

public void setup()

Description copied from interface: LazyCalc

Currently not super well define used for 2 purposes: Reset: called from the outside if you want to reuse it init: Called from the inside when calculation start to have everything setup maybe the semantic could work for both? TODO: This should be separated better.

Specified by:

setup in interface LazyCalc<E>

getValue

public E getValue()

Description copied from interface: CalcValue

Starts a lazy calculation. If dirty do calc() else return cached value. This should maybe be moved up in the hierarchy

Specified by:

getValue in interface CalcValue<E>