As per Spring documentation, the steps to use Spring JdbcTemplate is as follows: And then, Basically, the JdbcTemplate is created inside the Component class using the setter for datasource. Is there anything wrong with doing it this way instead so that there is exactly ONE instance of jdbcTemplate in the application? And then injecting the jdbcTemplate itself directly into the
Tag: jdbctemplate
JDBCTemplate set nested POJO with BeanPropertyRowMapper
Given the following example POJO’s: (Assume Getters and Setters for all properties) One can easily query a database (postgres in my case) and populate a list of Message classes using a BeanPropertyRowMapper where the db field matched the property in the POJO: (Assume the DB tables have corresponding fields to the POJO properties). I’m wondering – is there a convenient
How to query for a List in JdbcTemplate?
I’m using Spring’s JdbcTemplate and running a query like this: There are no named parameters being passed, however, column name, COLNAME, will be passed by the user. Questions Is there a way to have placeholders, like ? for column names? For example SELECT ? FROM TABLEA GROUP BY ? If I want to simply run the above query and get
How to search string LIKE ‘something%’ with Java Spring Framework?
I’ve got a MySQL table with Foos. Each Foo has a numeric non-unique code and a name. Now I need to find if any Foo with one of certain codes happens to have a name that starts with a given string. In normal SQL this would be trivial: But how would I properly do this in Spring now? Without the
Jdbctemplate query for string: EmptyResultDataAccessException: Incorrect result size: expected 1, actual 0
I am using Jdbctemplate to retrieve a single String value from the db. Here is my method. In my scenario it is complete possible to NOT get a hit on my query so my question is how do I get around the following error message. It would seem to me that I should just get back a null instead of