package com.cognifide.sling.query.api;
import java.util.Iterator;
import org.apache.sling.api.adapter.Adaptable;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import com.cognifide.sling.query.JavaQuery;
import com.cognifide.sling.query.iterator.AdaptToIterator;
import com.cognifide.sling.query.resource.ResourceTreeProvider;
/**
* SlingQuery is a Sling resource tree traversal tool inspired by the jQuery. Full documentation could be
* found on the <a href="https://github.com/Cognifide/Sling-Query">Github project page</a>.
*
* @author Tomasz Rękawek
*/
public class SlingQuery extends JavaQuery<Resource, SlingQuery> {
private SlingQuery(JavaQuery<Resource, SlingQuery> original, SearchStrategy strategy) {
super(original, strategy);
}
private SlingQuery(Resource[] resources, SearchStrategy strategy) {
super(new ResourceTreeProvider(), resources, strategy);
}
public static SlingQuery $(Resource... resources) {
return new SlingQuery(resources, SearchStrategy.QUERY);
}
public static SlingQuery $(ResourceResolver resolver) {
return $(resolver.getResource("/"));
}
/**
* Transform the whole collection to a new {@link Iterable} object, invoking
* {@link Adaptable#adaptTo(Class)} method on each Resource. If some Resource can't be adapted to the
* class (eg. {@code adaptTo()} returns {@code null}), it will be skipped.
*
* @param clazz Class used to adapt the Resources
* @return new iterable containing succesfully adapted Resources
*/
public <E> Iterable<E> map(final Class<? extends E> clazz) {
return new Iterable<E>() {
@Override
public Iterator<E> iterator() {
return new AdaptToIterator<Resource, E>(SlingQuery.this.iterator(), clazz);
}
};
}
@Override
protected SlingQuery clone(JavaQuery<Resource, SlingQuery> original, SearchStrategy strategy) {
return new SlingQuery(original, strategy);
}
}