Question

Group by query with HibernateTemplate.find()

Asked by: integrosys

I used the HibernateTemplate.find(String query) method to query a table, say PLAYER (corresponding Java object is OBPlayer.java). The query is "from OBPlayer player where player.name='john'". This returns a List, with each element an OBPlayer object.

Now I want to do a group by query, say "select player.age,count(player.age) from OBPlayer player" to get the number of players by age. What does the List return then? How do I get the results I want?

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Asked On
2006-09-20 at 01:47:50ID21995885
Topic

Java Programming Language

Participating Experts
1
Points
500
Comments
1

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Answers

 

by: yongsingPosted on 2006-09-20 at 03:13:04ID: 17559243

Each List returned contains Object[] elements, and each of the elements in Object[] are the values you want:

List results = hibernateTemplate.find("select player.age,count(player.age) from OBPlayer player");
for (int i = 0; i < results.size(); i++) {
  Object[] result = (Object[])results.get(i);
  BigDecimal age = (BigDecimal)result[0];
  BigDecimal count = (BigDecimal)result[1];
}

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