net.sf.javagimmicks.util8.LazySupplier Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of gimmicks Show documentation

Utility classes, APIs and tools for Java

There is a newer version: 0.99-alpha1

package net.sf.javagimmicks.util8;

import java.util.function.Supplier;

/**
 * An implementation of {@link Supplier} that creates the instance when it is
 * requested for the first time using another underlying {@link Supplier} which
 * is commonly known as "lazy loading" pattern.
 * 
 * @param 
 *           the type of object the supplier can carry
 */
public class LazySupplier extends AbstractLazySupplier
{
   private E _instance;

   /**
    * Creates a new instance for the given {@link Supplier}
    * 
    * @param supplier
    *           the {@link Supplier} to use for creating the instance
    */
   public LazySupplier(final Supplier supplier)
   {
      super(supplier);
   }

   @Override
   protected E getInstance()
   {
      return _instance;
   }

   @Override
   protected void setInstance(final E instance)
   {
      _instance = instance;
   }
}