groovy

java.sql.Timestamp + int = java.util.Date

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Fixed
  • Affects Version/s: 1.6.9, 1.7.10, 1.8.0
  • Fix Version/s: 1.8.5, 2.0-beta-2
  • Component/s: groovy-jdk
  • Labels:
    None
  • Environment:
    This bug appears to be platform and JDK independant.
  • Patch Submitted:
    Yes
  • Number of attachments :
    0

Description

The following code:

def d = new Date()
def t = new java.sql.Timestamp(d.getTime())
println t.class
t = t + 1
println t.class

Produces the following output:

class java.sql.Timestamp
class java.util.Date

This behavior is unexpected, and is causing us a small problem. The fix would be to change the org.codehaus.groovy.runtime.DateGroovyMethods.plus(Date,int) method to be as follows:

    public static Date plus(Date self, int days) {
        Calendar calendar = (Calendar) Calendar.getInstance().clone();
        calendar.setTime(self);
        calendar.add(Calendar.DAY_OF_YEAR, days);
        if (self instanceof java.sql.Timestamp) {
            java.sql.Timestamp ts = new java.sql.Timestamp(calendar.getTime().getTime());
            ts.setNanos(((java.sql.Timestamp)self).getNanos());
            return ts;
        }
        return calendar.getTime();
    }

Activity

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blackdrag blackdrag added a comment -

fixed code tags

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blackdrag blackdrag added a comment - fixed code tags
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blackdrag blackdrag added a comment -

actually I think adding 

public static Timestamp plus(Timestamp self, int days) {
        Calendar calendar = (Calendar) Calendar.getInstance().clone();
        calendar.setTime(self);
        calendar.add(Calendar.DAY_OF_YEAR, days);
        Timestamp ts = new Timestamp(calendar.getTime().getTime());
        ts.setNanos(self).getNanos());
        return ts;
    }

is a better way than an instanceof check in the method

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blackdrag blackdrag added a comment - actually I think adding public static Timestamp plus(Timestamp self, int days) { Calendar calendar = (Calendar) Calendar.getInstance().clone(); calendar.setTime(self); calendar.add(Calendar.DAY_OF_YEAR, days); Timestamp ts = new Timestamp(calendar.getTime().getTime()); ts.setNanos(self).getNanos()); return ts; } is a better way than an instanceof check in the method
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Jim Driscoll added a comment -

It's a matter of taste, but since there's already a separate method for java.sql.Date, I'm inclined to agree with you.

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Jim Driscoll added a comment - It's a matter of taste, but since there's already a separate method for java.sql.Date, I'm inclined to agree with you.

People

  • Assignee:
    Roshan Dawrani
    Reporter:
    Jim Driscoll
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Dates

  • Created:
    Updated:
    Resolved: