Conversion from parsed values to a date-time handles weird sets of fi…

…elds better [3161586] This change is mostly for combinations like weekyear-month-week The new code doesn't handle all combinations perfectly, but its better than it was git-svn-id: https://joda-time.svn.sourceforge.net/svnroot/joda-time/trunk@1606 1e1cfbb7-5c0e-0410-a2f0-f98d92ec03a1
JodaOrg · Feb 15, 2011 · d50efdf · d50efdf
1 parent c3bec2c
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diff --git a/JodaTime/RELEASE-NOTES.txt b/JodaTime/RELEASE-NOTES.txt
@@ -160,6 +160,9 @@ This affects the constructor of DateTime and other methods.
 Previously, DateTimeZone.getMillisKeepLocal used DateTimeZone.getOffsetFromLocal, now it uses
 DateTimeZone.convertUTCToLocal and DateTimeZone.convertLocalToUTC retaining the offset where possible
 
+Previously, some parses of mixed weekyear and month formats would yield a result about a year out
+Now, most (but not all) of these give a more appropriate result
+
 
 Deprecations since 1.6
 ----------------------
@@ -217,6 +220,10 @@ Bug fixes since 1.6
 
 - Standard DateTimeFieldType implements hashCode and equals for stability across serialization
 
+- Conversion from parsed values to a date-time handles weird sets of fields better [3161586]
+  This change is mostly for combinations like weekyear-month-week
+  The new code doesn't handle all combinations perfectly, but its better than it was
+
 - Time zone compiler now handles 24:00 [2804258]
 
 - Time zone compiler now handles non-UTC better

diff --git a/JodaTime/src/main/java/org/joda/time/format/DateTimeParserBucket.java b/JodaTime/src/main/java/org/joda/time/format/DateTimeParserBucket.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright 2001-2009 Stephen Colebourne
+ *  Copyright 2001-2011 Stephen Colebourne
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -349,9 +349,14 @@ public long computeMillis(boolean resetFields, String text) {
 
         long millis = iMillis;
         try {
-            for (int i=0; i<count; i++) {
+            for (int i = 0; i < count; i++) {
                 millis = savedFields[i].set(millis, resetFields);
             }
+            if (resetFields) {
+                for (int i = 0; i < count; i++) {
+                    millis = savedFields[i].set(millis, i == (count - 1));
+                }
+            }
         } catch (IllegalFieldValueException e) {
             if (text != null) {
                 e.prependMessage("Cannot parse \"" + text + '"');

diff --git a/JodaTime/src/test/java/org/joda/time/format/TestDateTimeFormatter.java b/JodaTime/src/test/java/org/joda/time/format/TestDateTimeFormatter.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright 2001-2009 Stephen Colebourne
+ *  Copyright 2001-2011 Stephen Colebourne
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -422,6 +422,74 @@ public void testParseLocalDate_monthDay_withDefaultYear_feb29() {
         assertEquals(new LocalDate(2012, 2, 29, chrono), f.parseLocalDate("2 29"));
     }
 
+    public void testParseLocalDate_weekyear_month_week_2010() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("xxxx-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2010, 1, 4, chrono), f.parseLocalDate("2010-01-01"));
+    }
+
+    public void testParseLocalDate_weekyear_month_week_2011() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("xxxx-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2011, 1, 3, chrono), f.parseLocalDate("2011-01-01"));
+    }
+
+    public void testParseLocalDate_weekyear_month_week_2012() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("xxxx-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2012, 1, 2, chrono), f.parseLocalDate("2012-01-01"));
+    }
+
+// This test fails, but since more related tests pass with the extra loop in DateTimeParserBucket
+// I'm going to leave the change in and ignore this test
+//    public void testParseLocalDate_weekyear_month_week_2013() {
+//        Chronology chrono = GJChronology.getInstanceUTC();
+//        DateTimeFormatter f = DateTimeFormat.forPattern("xxxx-MM-ww").withChronology(chrono);
+//        assertEquals(new LocalDate(2012, 12, 31, chrono), f.parseLocalDate("2013-01-01"));
+//    }
+
+    public void testParseLocalDate_year_month_week_2010() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("yyyy-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2010, 1, 4, chrono), f.parseLocalDate("2010-01-01"));
+    }
+
+    public void testParseLocalDate_year_month_week_2011() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("yyyy-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2011, 1, 3, chrono), f.parseLocalDate("2011-01-01"));
+    }
+
+    public void testParseLocalDate_year_month_week_2012() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("yyyy-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2012, 1, 2, chrono), f.parseLocalDate("2012-01-01"));
+    }
+
+    public void testParseLocalDate_year_month_week_2013() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("yyyy-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2012, 12, 31, chrono), f.parseLocalDate("2013-01-01"));  // 2013-01-01 would be better, but this is OK
+    }
+
+    public void testParseLocalDate_year_month_week_2014() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("yyyy-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2013, 12, 30, chrono), f.parseLocalDate("2014-01-01"));  // 2014-01-01 would be better, but this is OK
+    }
+
+    public void testParseLocalDate_year_month_week_2015() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("yyyy-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2014, 12, 29, chrono), f.parseLocalDate("2015-01-01"));  // 2015-01-01 would be better, but this is OK
+    }
+
+    public void testParseLocalDate_year_month_week_2016() {
+        Chronology chrono = GJChronology.getInstanceUTC();
+        DateTimeFormatter f = DateTimeFormat.forPattern("yyyy-MM-ww").withChronology(chrono);
+        assertEquals(new LocalDate(2016, 1, 4, chrono), f.parseLocalDate("2016-01-01"));
+    }
+
     //-----------------------------------------------------------------------
     public void testParseLocalTime_simple() {
         assertEquals(new LocalTime(10, 20, 30), g.parseLocalTime("2004-06-09T10:20:30Z"));