public void dispose()

in src/main/java/org/apache/sling/resourceresolver/impl/mapping/MapEntries.java [273:328]

• 35 lines of code
• 7 McCabe index (conditional complexity)

    public void dispose() {

        if (this.ah != null) {
            ah.dispose();
            ah = null;
        }

        if (this.registration != null) {
            this.registration.unregister();
            this.registration = null;
        }

        /*
         * Cooperation with doInit: The same lock as used by doInit is acquired
         * thus preventing doInit from running and waiting for a concurrent
         * doInit to terminate. Once the lock has been acquired, the resource
         * resolver is null-ed (thus causing the init to terminate when
         * triggered the right after and prevent the doInit method from doing
         * anything).
         */

        // wait at most 10 seconds for a notification during initialization
        boolean initLocked;
        try {
            initLocked = this.initializing.tryLock(10, TimeUnit.SECONDS);
        } catch (final InterruptedException ie) {
            initLocked = false;
        }

        try {
            if (!initLocked) {
                log.warn(
                        "dispose: Could not acquire initialization lock within 10 seconds; ongoing initialization may fail");
            }

            // immediately set the resolver field to null to indicate
            // that we have been disposed (this also signals to the
            // event handler to stop working
            final ResourceResolver oldResolver = this.resolver;
            this.resolver = null;

            if (oldResolver != null) {
                oldResolver.close();
            } else {
                log.warn("dispose: ResourceResolver has already been cleared before; duplicate call to dispose ?");
            }
        } finally {
            if (initLocked) {
                this.initializing.unlock();
            }
        }

        // clear the rest of the fields
        this.factory = null;
        this.eventAdmin = null;
    }