hibernate-commits

[<pao...@us...>]

Update of /cvsroot/hibernate/HibernateExt/metadata/src/test/org/hibernate/test/reflection/java
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv24797/metadata/src/test/org/hibernate/test/reflection/java

Added Files:
	ComprehensionTest.java 
Log Message:
Collection comprehension utilities

--- NEW FILE: ComprehensionTest.java ---
package org.hibernate.test.reflection.java;

import java.util.LinkedList;
import java.util.List;

import org.hibernate.reflection.java.Comprehension;
import org.hibernate.reflection.java.Condition;

import junit.framework.TestCase;

/**
 * @author Paolo Perrotta
 */
public class ComprehensionTest extends TestCase {

	public void testAppliesComprehensionToACollection() {
		List<Integer> allItems = new LinkedList<Integer>();
		allItems.add( -1 );
		allItems.add( 2 );

		// We want a new list that contains all the integers greater than zero
		// from the original list. With comprehension, we can do this in a
		// single instruction:
		List<Integer> selectedItems = Comprehension.select( allItems, new Condition<Integer>() {
			public boolean applyTo(Integer item) {
				return item > 0;
			}
		} );

		assertEquals( 1, selectedItems.size() );
		assertTrue( allItems.contains( 2 ) );
	}
}