toolkit.db.api
Interface SQLStmtCreator

public interface SQLStmtCreator

Normally, you import tables/views from DB to JReort Catalog and then build PSQL queries based on those imported tables/views using JReport Query Editor. You can define search conditions and joins among tables/views using JReport Query Editor. At runtime, JReport Engine will execute those queries and fetch data from those tables/views. But sometimes you may want to re-specify those information at runtime, for example, fetching data from other tables instead of those imported tables/views in JReport Catalog, re-defining some search conditions or joins, etc. API SQLStmtCreator gives you the chance to do so.
If you implement this interface and enable a PSQL query to get SQL statement from users, JReport Engine will ask you to create the SQL statement that will be passed to DB by calling SQLStmtCreator.getSQLStmt(QueryInfo).
Note: in order to use Class.forName() to create a new Class instance for the class implemented SQLStmtCreator, any implemented class must have a default constructor.

Method Summary

java.lang.String

getSQLStmt(QueryInfo psqlQueryInfo) Creates an SQL statement string.

Method Detail

getSQLStmt

java.lang.String getSQLStmt(QueryInfo psqlQueryInfo)

Creates an SQL statement string.

Parameters:

psqlQueryInfo - The psql query information, based on which SQL string is to be created.

Returns:

SQL statement string that will be passed to DB. #QueryInfo