| Do (Best Practices) | Don't (Anti-Patterns) | | :--- | :--- | | use SubDatasets instead of Subreports for simple lookups. | Don't use java.util.Date in parameters; use java.sql.Timestamp . | | Do set isStretchWithOverflow="true" for variable text fields. | Don't nest several large subreports inside a single detail band. | | Do compress your JRXML (JasperCompileManager) before server upload. | Don't hardcode database credentials in the JRXML; use Parameters ( $PDB_USER ). | | Do use $XEQUAL, ... for secure SQL injection protection. | Don't forget to set whenResourceMissingType="Key" for i18n reports. |
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