1 files changed, 0 insertions, 130 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/FilteringIterator.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/FilteringIterator.java
deleted file mode 100644
index eb0c970933..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/FilteringIterator.java
+++ /dev/null
@@ -1,130 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2007 Oracle. All rights reserved.
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0, which accompanies this distribution
- * and is available at http://www.eclipse.org/legal/epl-v10.html.
- * 
- * Contributors:
- *     Oracle - initial API and implementation
- ******************************************************************************/
-package org.eclipse.jpt.utility.internal.iterators;
-
-import java.util.Iterator;
-import java.util.NoSuchElementException;
-import org.eclipse.jpt.utility.internal.Filter;
-import org.eclipse.jpt.utility.internal.StringTools;
-
-/**
- * A <code>FilteringIterator</code> wraps another <code>Iterator</code>
- * and uses a <code>Filter</code> to determine which elements in the
- * nested iterator are to be returned by calls to <code>next()</code>.
- * <p>
- * As an alternative to building a <code>Filter</code>, a subclass
- * of <code>FilteringIterator</code> can override the
- * <code>accept(Object)</code> method.
- * <p>
- * One, possibly undesirable, side-effect of using this iterator is that
- * the nested iterator's <code>next()</code> method will be invoked
- * <em>before</em> the filtered iterator's <code>next()</code>
- * method is invoked. This is because the "next" element must be
- * checked for whether it is to be accepted before the filtered iterator
- * can determine whether it has a "next" element (i.e. that the
- * <code>hasNext()</code> method should return <code>true</code>).
- * This also prevents a filtered iterator from supporting the optional
- * <code>remove()</code> method.
- */
-public class FilteringIterator<E>
-	implements Iterator<E>
-{
-	private final Iterator<?> nestedIterator;
-	// trust that the filter is correct - i.e. it will only accept elements of type E
-	@SuppressWarnings("unchecked")
-	private final Filter filter;
-	private E next;
-	private boolean done;
-
-
-	/**
-	 * Construct an iterator with the specified nested
-	 * iterator and a filter that simply accepts every object.
-	 * Use this constructor if you want to override the
-	 * <code>accept(Object)</code> method instead of building
-	 * a <code>Filter</code>.
-	 */
-	public FilteringIterator(Iterator<?> nestedIterator) {
-		this(nestedIterator, Filter.Null.instance());
-	}
-
-	/**
-	 * Construct an iterator with the specified nested
-	 * iterator and filter.
-	 */
-	@SuppressWarnings("unchecked")
-	public FilteringIterator(Iterator<?> nestedIterator, Filter filter) {
-		super();
-		this.nestedIterator = nestedIterator;
-		this.filter = filter;
-		this.loadNext();
-	}
-
-	public boolean hasNext() {
-		return ! this.done;
-	}
-
-	public E next() {
-		if (this.done) {
-			throw new NoSuchElementException();
-		}
-		E result = this.next;
-		this.loadNext();
-		return result;
-	}
-
-	/**
-	 * Because we need to pre-load the next element
-	 * to be returned, we cannot support the <code>remove()</code>
-	 * method.
-	 */
-	public void remove() {
-		throw new UnsupportedOperationException();
-	}
-
-	/**
-	 * Load next with the next valid entry from the nested
-	 * iterator. If there are none, next is set to <code>END</code>.
-	 */
-	@SuppressWarnings("unchecked")
-	private void loadNext() {
-		this.done = true;
-		while (this.nestedIterator.hasNext() && (this.done)) {
-			Object o = this.nestedIterator.next();
-			if (this.accept(o)) {
-				// assume that if the object was accepted it is of type E
-				this.next = (E) o;
-				this.done = false;
-			} else {
-				this.next = null;
-				this.done = true;
-			}
-		}
-	}
-
-	/**
-	 * Return whether the <code>FilteringIterator</code>
-	 * should return the specified next element from a call to the
-	 * <code>next()</code> method.
-	 * <p>
-	 * This method can be overridden by a subclass as an
-	 * alternative to building a <code>Filter</code>.
-	 */
-	@SuppressWarnings("unchecked")
-	protected boolean accept(Object o) {
-		return this.filter.accept(o);
-	}
-
-	@Override
-	public String toString() {
-		return StringTools.buildToStringFor(this, this.nestedIterator);
-	}
-
-}