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[DS-594] Change all the SimpleDateFormat's in DCDate to be instance rather than static variables to avoid synchronisation issues, SimpleDateFormat is not thread-safe.

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git-svn-id: http://scm.dspace.org/svn/repo/dspace/trunk@5344 9c30dcfa-912a-0410-8fc2-9e0234be79fd
This commit is contained in:
Robin Taylor
2010-09-13 14:09:29 +00:00
parent 10ef4c179b
commit 51ca43e15b
1 changed files with 29 additions and 14 deletions
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43
dspace-api/src/main/java/org/dspace/content/DCDate.java
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@@ -91,32 +91,26 @@ public class DCDate
DateGran granularity = null;
// Full ISO 8601 is e.g. "2009-07-16T13:59:21Z"
private static final SimpleDateFormat fullIso = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
static { fullIso.setTimeZone(utcZone); }
private final SimpleDateFormat fullIso = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
// without Z
private static final SimpleDateFormat fullIso2 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
static { fullIso2.setTimeZone(utcZone); }
private final SimpleDateFormat fullIso2 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
// without seconds
private static final SimpleDateFormat fullIso3 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm");
static { fullIso3.setTimeZone(utcZone); }
private final SimpleDateFormat fullIso3 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm");
// without minutes
private static final SimpleDateFormat fullIso4 = new SimpleDateFormat("yyyy-MM-dd'T'HH");
static { fullIso4.setTimeZone(utcZone); }
private final SimpleDateFormat fullIso4 = new SimpleDateFormat("yyyy-MM-dd'T'HH");
// Date-only ISO 8601 is e.g. "2009-07-16"
private static final SimpleDateFormat dateIso = new SimpleDateFormat("yyyy-MM-dd");
static { dateIso.setTimeZone(utcZone); }
private final SimpleDateFormat dateIso = new SimpleDateFormat("yyyy-MM-dd");
// Year-Month-only ISO 8601 is e.g. "2009-07"
private static final SimpleDateFormat yearMonthIso = new SimpleDateFormat("yyyy-MM");
static { yearMonthIso.setTimeZone(utcZone); }
private final SimpleDateFormat yearMonthIso = new SimpleDateFormat("yyyy-MM");
// just year, "2009"
private static final SimpleDateFormat yearIso = new SimpleDateFormat("yyyy");
static { yearIso.setTimeZone(utcZone); }
private final SimpleDateFormat yearIso = new SimpleDateFormat("yyyy");
/**
* DateFormatSymbols for locale months name
@@ -137,6 +131,8 @@ public class DCDate
*/
public DCDate(Date date)
{
setUTCForFormatting();
if (date == null)
{
return;
@@ -173,6 +169,8 @@ public class DCDate
*/
public DCDate(int yyyy, int mm, int dd, int hh, int mn, int ss)
{
setUTCForFormatting();
// default values
int lyear = 0;
int lhours = 0;
@@ -237,6 +235,8 @@ public class DCDate
*/
public DCDate(String fromDC)
{
setUTCForFormatting();
// An empty date is OK
if ((fromDC == null) || fromDC.equals(""))
{
@@ -302,6 +302,21 @@ public class DCDate
}
}
/**
* Set all the formatters to use UTC. SimpleDateFormat is not thread-safe which
* is why they are not static variables initialised once.
*/
private void setUTCForFormatting()
{
fullIso.setTimeZone(utcZone);
fullIso2.setTimeZone(utcZone);
fullIso3.setTimeZone(utcZone);
fullIso4.setTimeZone(utcZone);
dateIso.setTimeZone(utcZone);
yearMonthIso.setTimeZone(utcZone);
yearIso.setTimeZone(utcZone);
}
// Attempt to parse, swallowing errors; return null for failure.
private synchronized Date tryParse(SimpleDateFormat sdf, String source)
{