Skip to main content
aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/SimpleFilter.java')
-rw-r--r--jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/SimpleFilter.java108
1 files changed, 0 insertions, 108 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/SimpleFilter.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/SimpleFilter.java
deleted file mode 100644
index 8cf6bb2650..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/SimpleFilter.java
+++ /dev/null
@@ -1,108 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2008 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;
-
-import java.io.Serializable;
-
-import org.eclipse.jpt.utility.Filter;
-
-/**
- * Simple, abstract implementation of <code>Filter</code>
- * that holds on to a criterion object that can be used in the
- * <code>accept(Object)</code> or <code>reject(Object)</code>
- * methods. Subclasses can override either of these methods,
- * depending on which is easier to implement. Note that at least
- * one of these methods <em>must</em> be overridden or
- * an infinite loop will occur. If both of them are overridden,
- * only the <code>accept(Object)</code> method will be used.
- * <p>
- * Simplifies the implementation of straightforward inner classes.
- * Here is an example of a filter that can be used by a
- * <code>FilteringIterator</code> to return only those strings
- * in the nested iterator start with "prefix":
- * <pre>
- * Filter<String> filter = new SimpleFilter<String>("prefix") {
- * public boolean accept(String o) {
- * return o.startsWith((String) criterion);
- * }
- * };
- * </pre>
- */
-public abstract class SimpleFilter<T, S>
- implements Filter<T>, Cloneable, Serializable
-{
- protected final S criterion;
-
- private static final long serialVersionUID = 1L;
-
-
- /**
- * More useful constructor. The specified criterion can
- * be used by a subclass to "accept" or "reject" objects.
- */
- protected SimpleFilter(S criterion) {
- super();
- this.criterion = criterion;
- }
-
- /**
- * Construct a simple filter with a null criterion
- */
- protected SimpleFilter() {
- this(null);
- }
-
- /**
- * Return whether the the specified object should be "rejected".
- * The semantics of "rejected" is determined by the client.
- */
- protected boolean reject(T o) {
- return ! this.accept(o);
- }
-
- /**
- * Return whether the the specified object should be "accepted".
- * The semantics of "accepted" is determined by the client.
- */
- public boolean accept(T o) {
- return ! this.reject(o);
- }
-
- @Override
- @SuppressWarnings("unchecked")
- public SimpleFilter<T, S> clone() {
- try {
- return (SimpleFilter<T, S>) super.clone();
- } catch (CloneNotSupportedException ex) {
- throw new InternalError();
- }
- }
-
- @Override
- public boolean equals(Object o) {
- if ( ! (o instanceof SimpleFilter)) {
- return false;
- }
- SimpleFilter<?, ?> other = (SimpleFilter<?, ?>) o;
- return (this.criterion == null) ?
- (other.criterion == null) : this.criterion.equals(other.criterion);
- }
-
- @Override
- public int hashCode() {
- return (this.criterion == null) ? 0 : this.criterion.hashCode();
- }
-
- @Override
- public String toString() {
- return StringTools.buildToStringFor(this, this.criterion);
- }
-
-}

Back to the top