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https://issues.apache.org/jira/browse/JEXL-225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027359#comment-16027359
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Henri Biestro edited comment on JEXL-225 at 5/27/17 8:54 AM:
-------------------------------------------------------------
ObjectContext is not really meant to work with a map as inner object; the 'has'
method in particular is not precise enough in this case since it only verifies
it can muster a JexlPropertyGet. That is fine for getting an actual
bean/property but in case of a map, we'd need to call containsKey.
Anyhow, we try to resolve a variable ('bar'), think we can ('has') and get a
null and fail.
It seems it would be easier in the current case to just develop a tailored
JexlContext.
was (Author: henrib):
ObjectContext is not really meant to work with a map as inner object; the 'has'
method in particular is not 'precise' enough since it only verifies it can
muster a JexlPropertyGet.
> Incorrect invoking methods with ObjectContext
> ---------------------------------------------
>
> Key: JEXL-225
> URL: https://issues.apache.org/jira/browse/JEXL-225
> Project: Commons JEXL
> Issue Type: Bug
> Affects Versions: 3.1
> Reporter: Vyacheslav Shago
> Assignee: Henri Biestro
>
> After apply fix in [JEXL-190|https://issues.apache.org/jira/browse/JEXL-190]
> folowing code doesn't work anymore:
> {code}
> public class Example {
> public static void main(String[] args) {
> JexlEngine jexl = new JexlBuilder().create();
> ObjectContext<Foo> context = new ObjectContext<>(jexl, new Foo());
> JexlExpression expression = jexl.createExpression("bar()");
> System.out.println(expression.evaluate(context));
> }
> public static class Foo extends HashMap<String, Object>{
> public String bar(){
> return "bar";
> }
> }
> }
> {code}
> Also doesn't work this code:
> {code}
> public class Example {
> public static void main(String[] args) {
> HashMap<String, Object> functions = new HashMap<>();
> functions.put(null, new DefaultFunctions());
> JexlEngine jexl = new JexlBuilder()
> .namespaces(functions)
> .create();
> ObjectContext<Object> context = new ObjectContext<>(jexl, new
> Object());
> JexlExpression expression = jexl.createExpression("bar()");
> System.out.println(expression.evaluate(context));
> }
> public static class DefaultFunctions {
> public String bar(){
> return "bar";
> }
> }
> }
> {code}
> Output:
> {code}
> Example.main@1:4 unsolvable function/method 'bar'
> {code}
> note: with MapContext all working correct
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