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https://issues.apache.org/jira/browse/GROOVY-8286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17835500#comment-17835500
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Eric Milles edited comment on GROOVY-8286 at 4/9/24 6:10 PM:
-------------------------------------------------------------
Groovy can access any field or method on an instance of the class that declares
it. For example you have {{Person}} here as the declaring class of {{setName}}
and the type of {{person}} variable. STC does emit an error for the method
case but not for the field case since it has been in common use for so long.
This becomes more of a problem when your method accepts a Person. Sending a
subclass will fail a field access but not a method access -- exactly the
reverse of the STC warnings. For example:
{code:java}
package foo;
class Bar {
String field = "boo";
String method() { return field; }
}
{code}
{code:groovy}
void test(foo.Bar bar) {
print bar.method() // prints "boo"
print bar.@field // MissingFieldException
print bar.field // MissingPropertyException
}
class Baz extends foo.Bar {
}
test(new Baz())
{code}
was (Author: emilles):
Groovy can access any field or method on an instance of the class that declares
it. For example you have {{Person}} here as the declaring class of {{setName}}
and the type of {{person}} variable. STC does emit an error for the method
case but not for the field case since it has been in common use for so long.
This becomes more of a problem when your method accepts a Person. Sending a
subclass will fail a field access but not a method access -- exactly the
reverse of the STC warnings. For example:
{code:java}
package foo;
class Bar {
int field = "boo";
int method() { return field; }
}
{code}
{code:groovy}
void test(foo.Bar bar) {
print bar.method() // prints "boo"
print bar.@field // MissingFieldException
print bar.field // MissingPropertyException
}
class Baz extends foo.Bar {
}
test(new Baz())
{code}
> Groovy does not respect package-private modifier of Java class
> --------------------------------------------------------------
>
> Key: GROOVY-8286
> URL: https://issues.apache.org/jira/browse/GROOVY-8286
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.4.8
> Reporter: Angela Guardian
> Priority: Major
>
> Hi. I'm using Java (1.8) with Groovy (2.4.8) via GMavenPlus (although with
> the project I'm working on, we actually also programmatically compile Groovy
> code and add it to the class loader to mix them up). It seems however, in
> Groovy scripts/classes, package-private methods defined in a Java class can
> be called.
> For example, I have a Java class {{Person}} in package
> {{org.example.people}}, defined like so:
> {code:java}
> package org.example.people;
> public class Person {
> private String name;
> void setName(String name) {
> this.name = name;
> }
> public String getName() {
> return this.name;
> }
> }
> {code}
> And I have a Groovy class {{Main}} in package {{org.example}}:
> {code:java}
> package org.example
> import groovy.transform.CompileStatic
> import org.example.people.Person
> class Main {
> static void main(String[] args) {
> Person person = new Person()
> person.setName('Bob') // Shouldn't be call-able since they belong to
> different packages.
> println person.getName() // Prints 'Bob' to the console.
> }
> }
> {code}
> Is this standard? Using {{\@CompileStatic}}, though, throws an
> {{IllegalAccessException}}.
>
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