In the past, I've found it frustrating that the Map interface does not
implement Collection. So here's an adapter to make a Map look like a
Collection. Some of the methods really operate on the keySet, but on
the whole it should suit many needs.
New files are attached and patches are below. Junit tests are provided
as well.
Thanks,
Chuck
=============================
Index: src/java/org/apache/commons/collections/package.html
===================================================================
RCS file:
/home/cvspublic/jakarta-commons/collections/src/java/org/apache/commons/collections/package.html,v
retrieving revision 1.4
diff -u -r1.4 package.html
--- src/java/org/apache/commons/collections/package.html 2001/08/29
15:28:07 1.4
+++ src/java/org/apache/commons/collections/package.html 2001/08/29
22:03:11
@@ -74,11 +74,13 @@
{@link org.apache.commons.collections.ArrayEnumeration}<br>
{@link org.apache.commons.collections.ArrayIterator}<br>
{@link
org.apache.commons.collections.EnumerationIterator}<br>
- {@link org.apache.commons.collections.IteratorEnumeration}
+ {@link
org.apache.commons.collections.IteratorEnumeration}<br>
+ {@link org.apache.commons.collections.MapCollection}
</td>
<td valign="top">
Access Java1-style containers as though they were
- Java2-style Collections and vice-versa.
+ Java2-style Collections and vice-versa. Also make a Map look
+ like a Collection.
</td>
</tr>
<tr>
Index: src/test/org/apache/commons/collections/TestAll.java
===================================================================
RCS file:
/home/cvspublic/jakarta-commons/collections/src/test/org/apache/commons/collections/TestAll.java,v
retrieving revision 1.11
diff -u -r1.11 TestAll.java
--- src/test/org/apache/commons/collections/TestAll.java 2001/08/29
15:28:07 1.11
+++ src/test/org/apache/commons/collections/TestAll.java 2001/08/29
22:03:11
@@ -90,6 +90,7 @@
suite.addTest(TestFastTreeMap1.suite());
suite.addTest(TestHashBag.suite());
suite.addTest(TestHashMap.suite());
+ suite.addTest(TestMapCollection.suite());
suite.addTest(TestSingletonIterator.suite());
suite.addTest(TestTreeBag.suite());
suite.addTest(TestTreeMap.suite());
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MapCollection.tgz
