sql queries, java string

Question

developing a web application using java. I have SQL queries with more than 40 lines ,using " , "+ at staring an end of query respectively. it is very difficult to convert string as query when i want to do any modifications in both both conversions

Answer 1

Can't you use PreparedStatement? If possible, use an ORM tool like hibernate. That will simplify your code (Of course there are other benefits).

Answer 2

If your facing trouble in maintaing the sql query then you could try moving to spring JDBC templace where you can store the query in a config/props file with placeholders/bind variables. This significantly reduces the errorneous part of constructing a string query.

Answer 3

You can simply generalise your queries by creating this kind of methods. Example:

private String DBFormatter="'";

public String FormatSQl(String value)
{
      return DBFormatter + value + DBFormatter;

}