public void close() throws IOException { is.close(); }
}
- public interface Lock {
- public Seekable seekable();
- public boolean isShared();
- public boolean isValid();
- public void release() throws IOException;
- public long position();
- public long size();
+ public abstract static class Lock {
+ private Object owner = null;
+
+ public abstract Seekable seekable();
+ public abstract boolean isShared();
+ public abstract boolean isValid();
+ public abstract void release() throws IOException;
+ public abstract long position();
+ public abstract long size();
+
+ public void setOwner(Object o) { owner = o; }
+ public Object getOwner() { return owner; }
+
+ public final boolean contains(int start, int len) {
+ return start >= position() && position() + size() >= start + len;
+ }
+
+ public final boolean contained(int start, int len) {
+ return start < position() && position() + size() < start + len;
+ }
+
+ public final boolean overlaps(int start, int len) {
+ return contains(start, len) || contained(start, len);
+ }
}
}