org.apache.commons.jexl

Class JexlOne.JexlOneInterpreter

java.lang.Object

org.apache.commons.jexl2.Interpreter

org.apache.commons.jexl.JexlOne.JexlOneInterpreter

All Implemented Interfaces:

ParserVisitor

Enclosing class:

JexlOne

private static final class JexlOne.JexlOneInterpreter
extends Interpreter

An interpreter made compatible with v1.1 behavior (at least Jelly's expectations).

Field Summary

Fields inherited from class org.apache.commons.jexl2.Interpreter

arithmetic, cache, context, EMPTY_PARAMS, functions, functors, logger, registers, silent, strict, uberspect

Constructor Summary

Constructors

Constructor and Description
JexlOneInterpreter(JexlEngine jexl, JexlContext aContext) Creates an instance.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	interpret(JexlNode node) Interpret the given script/expression.
protected java.lang.Object	invocationFailed(JexlException xjexl) Triggered when method, function or constructor invocation fails.
protected java.lang.Object	unknownVariable(JexlException xjexl) Triggered when variable can not be resolved.

Methods inherited from class org.apache.commons.jexl2.Interpreter

findNullOperand, getAttribute, getAttribute, getContext, getUberspect, isCancelled, isSilent, isStrict, resolveNamespace, setAttribute, setAttribute, setFrame, setRegisters, setSilent, setStrict, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

JexlOneInterpreter

public JexlOneInterpreter(JexlEngine jexl,
                          JexlContext aContext)

Creates an instance.

Parameters:

jexl - the jexl engine

aContext - the jexl context

Method Detail

interpret

public java.lang.Object interpret(JexlNode node)

Interpret the given script/expression.

If the underlying JEXL engine is silent, errors will be logged through its logger as info.

Overrides:

interpret in class Interpreter

Parameters:

node - the script or expression to interpret.

Returns:

the result of the interpretation.

invocationFailed

protected java.lang.Object invocationFailed(JexlException xjexl)

Triggered when method, function or constructor invocation fails.

Overrides:

invocationFailed in class Interpreter

Parameters:

xjexl - the JexlException wrapping the original error

Returns:

throws JexlException if strict, null otherwise

unknownVariable

protected java.lang.Object unknownVariable(JexlException xjexl)

Triggered when variable can not be resolved.

Overrides:

unknownVariable in class Interpreter

Parameters:

xjexl - the JexlException ("undefined variable " + variable)

Returns:

throws JexlException if strict, null otherwise