Java cannot find symbol on variable

Question

I'm pretty new to Java so bear with me. I can't for the life of me figure out why I'm getting a cannot find symbol error on resourceResolver.resolve. When on the line above it I'm defining the variable. Maybe this is something simple I'm missing but I can't figure this out and I feel like I've stared at this way to long.

private static final String ROOTCHILD = "rootChild";

public void setResource(Resource resource) {
   this.resource = resource;
}

public void setProperties(ValueMap properties) {
   this.properties = properties;
}

public Page getRootPage() {
   ResourceResolver resourceResolver = getResource().getResourceResolver();
   return (this.properties != null)
      ? resourceResolver.resolve(
           properties.get( ROOTCHILD,currentPage.getPath())).adaptTo(Page.class)
      : null;
}

Just to discard the obvious: Is the class `ResourceResolver` imported? — Barranka, Apr 22 '13 at 19:07
Where does `this.properties` come from? Is `Page` resolvable? — 11684, Apr 22 '13 at 19:09
Writing everything on a single line can be nice until you run into errors like this. Split out that long line and it will be obvious were the error is exactly. — Vincent van der Weele, Apr 22 '13 at 19:12
@11684 just edited the post to show you were this.properties is coming from and yes Page is resolvable. — Delmon Young, Apr 22 '13 at 19:23
Then it is either the method `.resolve()` or the variable `currentPage`. Wait, or `.adaptTo()`, or `getPath()`... — 11684, Apr 22 '13 at 19:25
Where is the declaration and initialization of properties? `ValueMap.get` returns a value of type `T`, which is generic. If that is not a String or an `HttpServletRequest`, it could cause a symbol not found. — 11684, Apr 22 '13 at 19:31

score 0 · Answer 1 · answered Apr 22 '13 at 19:38

My guess here (never worked with sling and haven't used Java for a while):

I think the problem is you initialized the ValueMap properties so that it doesn't contain Strings or HttpServletRequests, but something else. The .resolve() method only accepts either a String or an HttpServletRequest. (Or two parameters, but you're only passing one, so that one can't be the case.) There is no .resolve() method found accepting the parameters you try to give it, so that symbol is not found!

score 0 · Answer 2 · answered Apr 22 '13 at 19:45

To see the true error, rewrite your code and compile it:

public Page getRootPage() {
   if( properties == null ) {
      return null;
   }
   YYYYYY resource = getResource();
   ResourceResolver resourceResolver = resource.getResourceResolver();
   String path = currentPage.getPath();
   String rootChild = properties.get( ROOTCHILD, path );
   XXXXXX rc = resourceResolver.resolve( rootChild );
   return rc.adaptTo( Page.class );
}

Java cannot find symbol on variable

2 Answers2