How to Dynamically Pass Multiple Integer Values to a SQL 'IN' Clause in JasperReports?

Passing SQL "IN" Parameter List in JasperReports

Question:

How can I set the value of a SQL "IN" predicate parameter dynamically in Java while generating a JasperReport? The parameter can have multiple integer values determined at runtime.

Answer:

JasperReports provides a special variable, $X, to handle this scenario. By using $X{IN,customer_role,roles}, your query will translate to:

select * 
from customer 
where $X{IN,customer_role,roles}

where customer_role is the column name and roles is the parameter name.

Example:

Map<String, Object> parameters = new HashMap<>();
parameters.put("roles", Arrays.asList(1, 2, 3));
JasperReport jasperReport = JasperCompileManager.compileReportToFile(templatePath);
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, dataSource);

By setting the roles parameter as an array of integers, the query will generate results only for customers with role IDs in that list.

References:

• [JasperReports Documentation - IN Operator](https://community.jaspersoft.com/wiki/IN-operator)
• [JasperReports Operators: $X and $P](https://wiki.pentaho.com/display/BAD/JasperReports Operators: $X and $P)

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