Converting Dates – Masking

It’s a common task to convert dates found in external sources to the PDI/Apache Hop date format. While PDI/Apache Hop offers some typcial conversion masks as a drop down, you may need to create an own one. Here a cheat sheet how to use the masking parameters:

GEraText“GG” -> “AD”
yYearNumber“yy” -> “03””yyyy” -> “2003”
MMonthText or Number“M” -> “7””M” -> “12””MM” -> “07””MMM” -> “Jul””MMMM” -> “December”
dDay in monthNumber“d” -> “3””dd” -> “03”
hHour(1-12, AM/PM)Number“h” -> “3””hh” -> “03”
HHour (0-23)Number“H” -> “15””HH” -> “15”
kHour (1-24)Number“k” -> “3””kk” -> “03”
KHour (0-11, AM/PM)Number“K” -> “15””KK” -> “15”
mMinuteNumber“m” -> “7””m” -> “15””mm” -> “15”
sSecondNumber“s” -> “15””ss” -> “15”
SMillisecond (0-999)Number“SSS” -> “007”
EDay in weekText“EEE” -> “Tue””EEEE” -> “Tuesday”
DDay in year (1-365 or 1-364)Number“D” -> “65””DDD” -> “065”
FDay of week in month (1-5)Number“F” -> “1”
wWeek in year (1-53)Number“w” -> “7”
WWeek in month (1-5)Number“W” -> “3”
aAM/PMText“a” -> “AM””aa” -> “AM”
zTime zoneText“z” -> “EST””zzz” -> EST””zzzz” -> Eastern Standard Time”
XTime zone offsetText“XXX” -> “-08:00”
Escape for textDelimiter“hour’h” -> “hour 9”
Single quoteLiteral“ss”SSS” -> “45’876”. Use two quote marks in a row to create a single quote in a string.

Run PDI or Apache Hop on Apple M1

Currently PDI and Apache Hop do not run natively on M1. There are reports using the ARM optimised Azul JDK, but this was not working for me, as the newest STW Library is not yet ARM compatible.

Instead the following procedure worked for me on my Apple Macbook M1 (1st Gen).

Installation JDK 8.

If other JVMs are installed, they should be selected as follows:

Which Java versions do I have installed?

/usr/libexec/java_home -V

results in my case Matching Java Virtual Machines (3):

16.0.2 (x86_64) "Oracle Corporation" - "Java SE 16.0.2" /Library/Java/JavaVirtualMachines/jdk-16.0.2.jdk/Contents/Home

1.8.0_302 (arm64) "Azul Systems, Inc." - "Zulu" /Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home

1.8.0_301 (x86_64) "Oracle Corporation" - "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_301.jdk/Contents/Home

Set Java_HOME Path correctly:


export JAVA_HOME=$(/usr/libexec/java_home -v "1.8.0_301")

Check selected JVM
java -version


Set terminal to Intel mode according to:

And replace SWT.jar library (according to previous step)

With that changes, you can start PDI and Apache Hop on M1