[birt-dev] Checkin: Fix bug 158947 : the error of the datetime type conv

["Xiaofeng Zhang" <xiaofeng.zhang@xxxxxxxxxxx>]

- Summary:

Fix bug 158947

- Bugzilla Bug (s) Resolved:
Fix bug 159380 : the error of the datetime type conversion

 

- Description:
1. The method toDate() try to parse the date string with all date and time types. The bug is fixed.

2. The ICU DateFormat maps cached in memory are removed because these instances cosume a large size of memory. The fix won't cause thread unsafty.DataEngineContext is removed.

- Tests Description:
 Junit Test

 

- Notes to Build Team:
N/A

- Notes to Developers:
N/A

- Notes to QA:  

N/A

 

- Notes to Documentation:  
N/A

 

- Files Edited:

/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java

- Files Added:

N/A