| Describes an access rule to source and class files on a classpath entry.
An access rule is composed of a file pattern and a kind (accessible,
non accessible, or discouraged).
On a given classpath entry, the access rules are considered in the order given
when the entry was created. When a source or class file matches an access
rule's pattern, the access rule's kind define whether the file is considered
accessible, non accessible, or its access is discouraged. If the source or class
file doesn't match any accessible rule, it is considered accessible. A source or class
file that is not accessible or discouraged can still be refered to but it is tagged as being not
accessible - the Java builder will create a problem marker for example.
The severity of the marker created from a non accessible rule is controled through
the
JavaCore.COMPILER_PB_FORBIDDEN_REFERENCE compiler option.
The severity of the marker created from a discouraged rule is controled through
the
JavaCore.COMPILER_PB_DISCOURAGED_REFERENCE compiler option.
Note this is different from inclusion and exclusion patterns on source classpath entries,
where a source file that is excluded is not even compiled.
Files patterns look like relative file paths with wildcards and are interpreted relative
to each entry's path.
File patterns are case-sensitive and they can contain '**', '*' or '?' wildcards (see
IClasspathEntry.getExclusionPatterns for the full description
of their syntax and semantics).
Note that file patterns must not include the file extension.
com/xyz/tests/MyClass is a valid file pattern, whereas
com/xyz/tests/MyClass.class is not valid.
For example, if one of the entry path is /Project/someLib.jar,
there are no accessible rules, and there is one non accessible rule whith pattern
com/xyz/tests/**, then class files
like /Project/someLib.jar/com/xyz/Foo.class
and /Project/someLib.jar/com/xyz/utils/Bar.class would be accessible,
whereas /Project/someLib.jar/com/xyz/tests/T1.class
and /Project/someLib.jar/com/xyz/tests/quick/T2.class would not be
accessible.
This interface is not intended to be implemented by clients.
since:
3.1 |