Author: ryman
Date: Tue Nov 14 10:34:17 2006
New Revision: 474912
URL: http://svn.apache.org/viewvc?view=rev&rev=474912
Log:
[WODEN-82] Created ObjectIdTable class and junit. Updated build scripts to run
junit.
Added:
incubator/woden/trunk/java/src/org/apache/woden/ant/ObjectIdTable.java
incubator/woden/trunk/java/test/org/apache/woden/ant/
incubator/woden/trunk/java/test/org/apache/woden/ant/ObjectIdTableTest.java
Added: incubator/woden/trunk/java/src/org/apache/woden/ant/ObjectIdTable.java
URL:
http://svn.apache.org/viewvc/incubator/woden/trunk/java/src/org/apache/woden/ant/ObjectIdTable.java?view=auto&rev=474912
==============================================================================
--- incubator/woden/trunk/java/src/org/apache/woden/ant/ObjectIdTable.java
(added)
+++ incubator/woden/trunk/java/src/org/apache/woden/ant/ObjectIdTable.java Tue
Nov 14 10:34:17 2006
@@ -0,0 +1,60 @@
+/**
+ * Copyright 2006 Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.woden.ant;
+
+import java.util.HashMap;
+
+/**
+ * Provides a completely safe way to generate unique ids for equivalence
classes of objects.
+ * Equivalent objects are assigned the same ids.
+ * Inequivalent objects are assigned different ids.
+ * Here equivalance is defined by the equals() method which is used by HashMap.
+ * Experience has shown that hashCode() occasionally produces the same hash
for different objects.
+ * Note that the objects are permanently stored, so only use this class when
serializing
+ * objects in an XML file.
+ *
+ * A count is kept and assigned to each object equivalence class as it is
added.
+ *
+ * @author Arthur Ryman ([EMAIL PROTECTED], [EMAIL PROTECTED])
+ *
+ */
+
+public class ObjectIdTable {
+
+ private HashMap components = new HashMap();
+
+ private int nextId = 1;
+
+ /**
+ * Returns a unique integer for the equivalence class of the object.
+ *
+ * @param o An object.
+ * @return A unique id for the object.
+ */
+ public int id(Object o) {
+
+ Integer id = (Integer) components.get(o);
+ if (id == null) {
+
+ id = new Integer(nextId++);
+ components.put(o, id);
+ }
+
+ return id.intValue();
+ }
+
+}
Added:
incubator/woden/trunk/java/test/org/apache/woden/ant/ObjectIdTableTest.java
URL:
http://svn.apache.org/viewvc/incubator/woden/trunk/java/test/org/apache/woden/ant/ObjectIdTableTest.java?view=auto&rev=474912
==============================================================================
--- incubator/woden/trunk/java/test/org/apache/woden/ant/ObjectIdTableTest.java
(added)
+++ incubator/woden/trunk/java/test/org/apache/woden/ant/ObjectIdTableTest.java
Tue Nov 14 10:34:17 2006
@@ -0,0 +1,65 @@
+/**
+ * Copyright 2006 Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.woden.ant;
+
+import org.apache.woden.ant.ObjectIdTable;
+import org.apache.woden.types.NCNameTest;
+
+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Tests ObjectIdTable.
+ *
+ * @author Arthur Ryman ([EMAIL PROTECTED], [EMAIL PROTECTED])
+ *
+ */
+public class ObjectIdTableTest extends TestCase {
+
+ /**
+ * Creates a test suite for this class.
+ *
+ * @return the test suite
+ */
+ public static Test suite()
+ {
+ return new TestSuite(ObjectIdTableTest.class);
+ }
+
+ /**
+ * Tests the id() method.
+ * Same objects have the same id.
+ * Different objects have different ids.
+ */
+ public void testId() {
+
+ String s1 = "s1";
+ String s2 = "s2";
+
+ ObjectIdTable oit = new ObjectIdTable();
+
+ int id1 = oit.id(s1);
+ assertTrue("Same object, same id", id1 == oit.id(s1));
+
+ int id2 = oit.id(s2);
+ assertTrue("Different object, different id", id1 != id2);
+
+ assertTrue("Same object, same id, again", id2 == oit.id(s2));
+ }
+
+}
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
