Jasper reports data filtering

I'm working with jasper reports, supplying data through the JRMapCollectionDataSource. To be specific, each row is smth like this:

{"id"->"21552", "name"->"", "date"->"22.03.2013"}

Now I need to include to the report only those records, where id is greater t开发者_如何转开发han 10, for instance. What shall I do?

I've discovered filterexpression tag, but it only works with subdata sets. Then, how I can apply it to the main dataset?

When I'm trying to put filterexpression inside the jasperReport tag, iReports fails with error: thanks a lot for your response, I've tried to do so. I report gives me

exception:org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'property'. One of '{"http://jasperreports.sourceforge.net/jasperreports":group, "http://jasperreports.sourceforge.net/jasperreports":background, "http://jasperreports.sourceforge.net/jasperreports":title, "http://jasperreports.sourceforge.net/jasperreports":pageHeader, "http://jasperreports.sourceforge.net/jasperreports":columnHeader, "http://jasperreports.sourceforge.net/jasperreports":detail, "http://jasperreports.sourceforge.net/jasperreports":columnFooter, "http://jasperreports.sourceforge.net/jasperreports":pageFooter, "http://jasperreports.sourceforge.net/jasperreports":lastPageFooter, "http://jasperreports.sourceforge.net/jasperreports":summary, "http://jasperreports.sourceforge.net/jasperreports":noData}' is expected.

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Filter expressions are not limited to sub-datasets. Simply put the filterExpression tag inside the jasperReport tag and it will be applied to the main dataset.

Placement is important, it seems. The filter expression must come before any content, but after the fields are declared.