Author: bayard
Date: Sat Jan 16 07:58:11 2010
New Revision: 899895
URL: http://svn.apache.org/viewvc?rev=899895&view=rev
Log:
Adding String lazy caching
Modified:
commons/proper/lang/trunk/src/main/java/org/apache/commons/lang3/Range.java
Modified:
commons/proper/lang/trunk/src/main/java/org/apache/commons/lang3/Range.java
URL:
http://svn.apache.org/viewvc/commons/proper/lang/trunk/src/main/java/org/apache/commons/lang3/Range.java?rev=899895&r1=899894&r2=899895&view=diff
==============================================================================
--- commons/proper/lang/trunk/src/main/java/org/apache/commons/lang3/Range.java
(original)
+++ commons/proper/lang/trunk/src/main/java/org/apache/commons/lang3/Range.java
Sat Jan 16 07:58:11 2010
@@ -28,13 +28,33 @@
*/
public final class Range<T> implements Serializable {
+ /**
+ * Required for serialization support.
+ *
+ * @see java.io.Serializable
+ */
private static final long serialVersionUID = 1L;
+ /**
+ * The ordering scheme used in this range.
+ */
private final Comparator<T> comparator;
+
+ /**
+ * The minimum value in this range (inclusive).
+ */
private final T minimum;
+ /**
+ * The maximum value in this range (inclusive).
+ */
private final T maximum;
/**
+ * Cached output toString (class is immutable).
+ */
+ private transient String toString = null;
+
+ /**
* <p>Constructs a new <code>Range</code> using the specified
* element as both the minimum and maximum in this range.</p>
* <p>The range uses the natural ordering of the elements to
@@ -320,16 +340,18 @@
*/
@Override
public String toString() {
- StringBuilder buf = new StringBuilder(32);
- buf.append("Range[");
- buf.append(this.minimum);
- buf.append(',');
- buf.append(this.maximum);
- buf.append(']');
- return buf.toString();
+ if (toString == null) {
+ StringBuilder buf = new StringBuilder(32);
+ buf.append("Range[");
+ buf.append(this.minimum);
+ buf.append(',');
+ buf.append(this.maximum);
+ buf.append(']');
+ toString = buf.toString();
+ }
+ return toString;
}
-
// Taken from Commons Collections - documentation removed as not a public
class
private static class ComparableComparator<E extends Comparable<? super E>>
implements Comparator<E>, Serializable {
