xapi.collect.impl.SingletonIterator Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of xapi-dev Show documentation

Everything needed to run a comprehensive dev environment. Just type X_ and pick a service from autocomplete; new dev modules will be added as they are built. The only dev service not included in the uber jar is xapi-dev-maven, as it includes all runtime dependencies of maven, adding ~4 seconds to build time, and 6 megabytes to the final output jar size (without xapi-dev-maven, it's ~1MB).

The newest version!

package xapi.collect.impl;

import java.util.Iterator;

public class SingletonIterator  implements Iterable{

  private final class Iter implements Iterator {
    private X object;

    public Iter(X object) {
      this.object = object;
    }

    @Override
    public boolean hasNext() {
      return object != null;
    }

    @Override
    public X next() {
      try {
        return object;
      } finally {
        object = null;
      }
    }

    @Override
    public void remove() {
      object = null;
    }
  }

  private final X singleton;

  public SingletonIterator(X singleton) {
    this.singleton = singleton;
  }

  @Override
  public Iterator iterator() {
    return new Iter(singleton);
  }

}