NIFI: Generating dates between two dates using ExecuteScript processor
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I am currently trying to get list of all dates in a flowfile between the two dates specified using ExecuteScript. But I am somehow getting empty attribute.
Following is my Groovy code of ExecuteScript for the specified startdate and enddate variable specified:
flowFile = session.get();
if(!flowFile)
return;
DATE_FORMAT = 'dd-MM-yyyy';
startDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("startdate"));
endDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("enddate"));
allDates = "";
Calendar calendar = Calendar.getInstance();
Set allDates = new LinkedHashSet();
numbers = TimeUnit.MILLISECONDS.toDays(Math.abs(endDate - startDate))
for (int i = 1; i <= numbers; i++) {
calendar.setTime( startDate );
calendar.add( Calendar.DATE, i );
}
days.each {
day -> allDates = allDates + day + "n";
}
flowFile = session.putAttribute(flowFile,"allDates", allDates );
session.transfer(flowFile,REL_SUCCESS)
On my outgoing queue I find the attribute allDates is empty String
What is going wrong with my code?
groovy apache-nifi
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
add a comment |
I am currently trying to get list of all dates in a flowfile between the two dates specified using ExecuteScript. But I am somehow getting empty attribute.
Following is my Groovy code of ExecuteScript for the specified startdate and enddate variable specified:
flowFile = session.get();
if(!flowFile)
return;
DATE_FORMAT = 'dd-MM-yyyy';
startDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("startdate"));
endDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("enddate"));
allDates = "";
Calendar calendar = Calendar.getInstance();
Set allDates = new LinkedHashSet();
numbers = TimeUnit.MILLISECONDS.toDays(Math.abs(endDate - startDate))
for (int i = 1; i <= numbers; i++) {
calendar.setTime( startDate );
calendar.add( Calendar.DATE, i );
}
days.each {
day -> allDates = allDates + day + "n";
}
flowFile = session.putAttribute(flowFile,"allDates", allDates );
session.transfer(flowFile,REL_SUCCESS)
On my outgoing queue I find the attribute allDates is empty String
What is going wrong with my code?
groovy apache-nifi
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
add a comment |
I am currently trying to get list of all dates in a flowfile between the two dates specified using ExecuteScript. But I am somehow getting empty attribute.
Following is my Groovy code of ExecuteScript for the specified startdate and enddate variable specified:
flowFile = session.get();
if(!flowFile)
return;
DATE_FORMAT = 'dd-MM-yyyy';
startDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("startdate"));
endDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("enddate"));
allDates = "";
Calendar calendar = Calendar.getInstance();
Set allDates = new LinkedHashSet();
numbers = TimeUnit.MILLISECONDS.toDays(Math.abs(endDate - startDate))
for (int i = 1; i <= numbers; i++) {
calendar.setTime( startDate );
calendar.add( Calendar.DATE, i );
}
days.each {
day -> allDates = allDates + day + "n";
}
flowFile = session.putAttribute(flowFile,"allDates", allDates );
session.transfer(flowFile,REL_SUCCESS)
On my outgoing queue I find the attribute allDates is empty String
What is going wrong with my code?
groovy apache-nifi
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
I am currently trying to get list of all dates in a flowfile between the two dates specified using ExecuteScript. But I am somehow getting empty attribute.
Following is my Groovy code of ExecuteScript for the specified startdate and enddate variable specified:
flowFile = session.get();
if(!flowFile)
return;
DATE_FORMAT = 'dd-MM-yyyy';
startDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("startdate"));
endDate = Date.parse(DATE_FORMAT, flowFile.getAttribute("enddate"));
allDates = "";
Calendar calendar = Calendar.getInstance();
Set allDates = new LinkedHashSet();
numbers = TimeUnit.MILLISECONDS.toDays(Math.abs(endDate - startDate))
for (int i = 1; i <= numbers; i++) {
calendar.setTime( startDate );
calendar.add( Calendar.DATE, i );
}
days.each {
day -> allDates = allDates + day + "n";
}
flowFile = session.putAttribute(flowFile,"allDates", allDates );
session.transfer(flowFile,REL_SUCCESS)
On my outgoing queue I find the attribute allDates is empty String
What is going wrong with my code?
groovy apache-nifi
groovy apache-nifi
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
asked Nov 23 '18 at 17:37
Jasim WaheedJasim Waheed
48115
48115
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
you have some problems in your code
for example the variable allDates declared twice i two different scopes:
global (without type or def)
allDates = "";
and local (with type)
Set allDates = new LinkedHashSet();
after that it's hard to predict which one is used
and actually code could be easier in groovy:
def DATE_FORMAT = 'dd-MM-yyyy';
def startDate = Date.parse(DATE_FORMAT, '01-11-1970');
def endDate = Date.parse(DATE_FORMAT, '09-11-1970');
def allDates = ""
for (def d = startDate; d<=endDate; d++){
allDates+=d.format(DATE_FORMAT)+"n"
}
println allDates
note that this is runable code so you can use groovyconsole or any IDE to debug it before integrating into nifi
of cause you have to wrap it with flow file handling before using in nifi
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
you have some problems in your code
for example the variable allDates declared twice i two different scopes:
global (without type or def)
allDates = "";
and local (with type)
Set allDates = new LinkedHashSet();
after that it's hard to predict which one is used
and actually code could be easier in groovy:
def DATE_FORMAT = 'dd-MM-yyyy';
def startDate = Date.parse(DATE_FORMAT, '01-11-1970');
def endDate = Date.parse(DATE_FORMAT, '09-11-1970');
def allDates = ""
for (def d = startDate; d<=endDate; d++){
allDates+=d.format(DATE_FORMAT)+"n"
}
println allDates
note that this is runable code so you can use groovyconsole or any IDE to debug it before integrating into nifi
of cause you have to wrap it with flow file handling before using in nifi
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
add a comment |
you have some problems in your code
for example the variable allDates declared twice i two different scopes:
global (without type or def)
allDates = "";
and local (with type)
Set allDates = new LinkedHashSet();
after that it's hard to predict which one is used
and actually code could be easier in groovy:
def DATE_FORMAT = 'dd-MM-yyyy';
def startDate = Date.parse(DATE_FORMAT, '01-11-1970');
def endDate = Date.parse(DATE_FORMAT, '09-11-1970');
def allDates = ""
for (def d = startDate; d<=endDate; d++){
allDates+=d.format(DATE_FORMAT)+"n"
}
println allDates
note that this is runable code so you can use groovyconsole or any IDE to debug it before integrating into nifi
of cause you have to wrap it with flow file handling before using in nifi
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
add a comment |
you have some problems in your code
for example the variable allDates declared twice i two different scopes:
global (without type or def)
allDates = "";
and local (with type)
Set allDates = new LinkedHashSet();
after that it's hard to predict which one is used
and actually code could be easier in groovy:
def DATE_FORMAT = 'dd-MM-yyyy';
def startDate = Date.parse(DATE_FORMAT, '01-11-1970');
def endDate = Date.parse(DATE_FORMAT, '09-11-1970');
def allDates = ""
for (def d = startDate; d<=endDate; d++){
allDates+=d.format(DATE_FORMAT)+"n"
}
println allDates
note that this is runable code so you can use groovyconsole or any IDE to debug it before integrating into nifi
of cause you have to wrap it with flow file handling before using in nifi
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
you have some problems in your code
for example the variable allDates declared twice i two different scopes:
global (without type or def)
allDates = "";
and local (with type)
Set allDates = new LinkedHashSet();
after that it's hard to predict which one is used
and actually code could be easier in groovy:
def DATE_FORMAT = 'dd-MM-yyyy';
def startDate = Date.parse(DATE_FORMAT, '01-11-1970');
def endDate = Date.parse(DATE_FORMAT, '09-11-1970');
def allDates = ""
for (def d = startDate; d<=endDate; d++){
allDates+=d.format(DATE_FORMAT)+"n"
}
println allDates
note that this is runable code so you can use groovyconsole or any IDE to debug it before integrating into nifi
of cause you have to wrap it with flow file handling before using in nifi
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
answered Nov 24 '18 at 9:58
daggettdaggett
9,58321631
9,58321631
add a comment |
add a comment |
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