if ( expr.trim().length() > 0 ) {
MVELDialect dialect = (MVELDialect) context.getDialect( "mvel" );
// creating a reusable parser configuration
ParserConfiguration conf = new ParserConfiguration();
conf.addAllImports( dialect.getImports() );
if ( dialect.getPackgeImports() != null && !dialect.getPackgeImports().isEmpty() ) {
for ( String packageImport : ((Collection<String>) dialect.getPackgeImports().values()) ) {
conf.addPackageImport( packageImport );
}
}