JdbcTemplate throws java.sql.SQLException:

Question

String query = "Select count(*) from product where date_added in (?)";

Object[] params = {dates}; //dates is a list of java.sql.Date

Long productCount = jdbcTemplate.queryForObject(query, params, Long.class);

Last line throws:

java.sql.SQLException: Unable to convert between java.util.ArrayList and JAVA_OBJECT while querying the database with IN clause

Already tried using NamedParameterJdbcTemplate , it was asking for quotes within the list, which can cause sql injection. To overcome that using jdbcTemplate.

Any help is appreciated.

Answer 1

You need a parameter source:

Set<Integer> ids = ...;

MapSqlParameterSource parameters = new MapSqlParameterSource();
parameters.addValue("ids", ids);

List<Foo> foo = getJdbcTemplate().query("SELECT * FROM foo WHERE a IN (:ids)", 
parameters, getRowMapper());

This only works if getJdbcTemplate() returns an instance of type NamedParameterJdbcTemplate. Also make sure you capture your result into a list.