resolves https://github.com/spring-cloud/spring-cloud-task/issues/780

update db2 'between' logic to be exclusive

Signed-off-by: Ryan DCruz <rd@enfuse.io>

use .acceptLicense() instead of the classpath file

checkstyle

add test to verify a result set that's smaller than requested page size

cleanup

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/repository/database/support/Db2PagingQueryProvider.java

@@ -24,6 +24,7 @@ import org.springframework.data.domain.Pageable;
  * database specific features.
  *
  * @author Thomas Schuettel
+ * @author Ryan DCruz
  */
 public class Db2PagingQueryProvider extends AbstractSqlPagingQueryProvider {
 
@@ -31,8 +32,7 @@ public class Db2PagingQueryProvider extends AbstractSqlPagingQueryProvider {
 	public String getPageQuery(Pageable pageable) {
 		long offset = pageable.getOffset() + 1;
 		return generateRowNumSqlQueryWithNesting(getSelectClause(), false,
-				"TMP_ROW_NUM BETWEEN " + offset + " AND "
-						+ (offset + pageable.getPageSize()));
+			"TMP_ROW_NUM >= " + offset + " AND TMP_ROW_NUM < " + (offset + pageable.getPageSize()));
 	}
 
 	private String generateRowNumSqlQueryWithNesting(String selectClause,