Set timezone variable in fe #1587
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HangyuanLiu
reviewed
Aug 5, 2019
| checkUpdate(setVar, ctx.getFlag()); | ||
| // Check variable time_zone value is valid | ||
| if (setVar.getVariable().toLowerCase().equals("time_zone")) { | ||
| if (!setVar.getValue().getStringValue().equalsIgnoreCase("SYSTEM")) { |
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we don't support "system" variable because fe system time zone is different
imay
requested changes
Aug 5, 2019
| } | ||
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| // Check if the time zone_value is valid | ||
| private static void checkTimeZoneValid(SetVar setVar) throws DdlException { |
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I think is a common function that can be used by others.
we'd better to put this function another place.
| if (!value.contains("/") && !value.equals("CST") && !m.matches()) { | ||
| ErrorReport.reportDdlException(ErrorCode.ERR_UNKNOWN_TIME_ZONE, setVar.getValue().getStringValue()); | ||
| } | ||
| if (m.matches()) { |
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Can you add some comments for this function to let people known what it want to do?
added 2 commits
August 6, 2019 10:30
imay
reviewed
Aug 6, 2019
| // Variables with this flag can not be seen with `SHOW VARIABLES` statement. | ||
| public static final int INVISIBLE = 16; | ||
| // set CST to +08:00 instead of America/Chicago | ||
| public static final ImmutableMap<String, String> timeZoneAliasMap = ImmutableMap.of("CST", "Asia/Shanghai"); |
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I think it's better to put it in TimeUtils
| public static void checkTimeZoneValid(String value) throws DdlException { | ||
| try { | ||
| // match offset type, such as +08:00, -07:00 | ||
| Pattern p = Pattern.compile("^[+-]{1}\\d{2}\\:\\d{2}$"); |
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I think you can make this static to compile it only one time
| if (!value.contains("/") && !value.equals("CST") && !m.matches()) { | ||
| ErrorReport.reportDdlException(ErrorCode.ERR_UNKNOWN_TIME_ZONE, value); | ||
| } | ||
| if (m.matches()) { |
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you can make it better to avoid calling matches two times?
imay
approved these changes
Aug 7, 2019
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luwei16
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Apr 7, 2023
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This is part of support multiple time zone(Issue #1583 ), it just set the timezone variable in fe.
something to notice:
#1583