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Handle Map in I report from java

 
prriya pratheep
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I am using java and I Report and new to Ireport. Values to I report are passed through java.

I handled only single values not array or group of values .


Now I want to create a chart. with month on x-axis and running(auto increment) values on y-axis. Data are in Map in java , so i can pass Map to Ireport through parameters.How can use this to chart.

I saw example are for SQ L query .

My java code


Usually i retrieve values like this in Ireport



sample output is
Month: 1
Key: Actual_Cost
Value: 910.00
Key: Actual_Sale
Value: 0.00
Key: Cost
Value: 87300.00
Key: Sale
Value: 97991.25
.....
Month: 17
Key: Actual_Cost
Value: 910.00
Key: Actual_Sale
Value: 0.00
Key: Cost
Value: 92740.00
Key: Sale
Value: 104095.75



Please anybody help me how to retrieve data from map? or If map can not handle in ireport any other way to handle this.

My x-axis is for month should like this M 1, M 2, M 3 ....
and y-axis 100,200,300 etc.

what should i use for Series expression, X Value expression and Y value expression in i report chart properties?

Using graph for four keys so X Y map is OK right?

Please give me suggestions...


Note: data are from two sources, that is why i am using parameter and data source.
 
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