initial joda time support courtesy of Oliver Gierke

org.springframework.context/src/main/java/org/springframework/ui/format/jodatime/DateTimeFormatter.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2002-2009 the original author or authors.
+ *
+ * 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.springframework.ui.format.jodatime;
+
+import java.text.ParseException;
+import java.util.Locale;
+
+import org.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormat;
+import org.springframework.ui.format.Formatter;
+
+/**
+ * {@link Formatter} implementation to handle JodaTime {@link DateTime} instances.
+ * @author Oliver Gierke
+ */
+public class DateTimeFormatter implements Formatter<DateTime> {
+
+	private org.joda.time.format.DateTimeFormatter formatter;
+
+	/**
+	 * Creates a new {@link DateTimeFormatter} for the given JodaTime formatting pattern.
+	 * @param pattern
+	 * @see DateTimeFormat
+	 */
+	public DateTimeFormatter(String pattern) {
+		this.formatter = DateTimeFormat.forPattern(pattern);
+	}
+
+	/**
+	 * Creates a new {@link DateTimeFormatter} for the given JodaTime formatter.
+	 */
+	public DateTimeFormatter(org.joda.time.format.DateTimeFormatter formatter) {
+		this.formatter = formatter;
+	}
+
+	public String format(DateTime object, Locale locale) {
+		return null == object ? "" : object.toString(formatter);
+	}
+
+	public DateTime parse(String formatted, Locale locale) throws ParseException {
+		return formatter.withLocale(locale).parseDateTime(formatted);
+	}
+}