Java Hibernate Cookbook

Working with NamedQuery

NamedQuery is another useful feature provided by hibernate. Sometimes, we require a query or a bunch of queries multiple times in the life of an application; at such a time, this feature helps.

How to do it…

Let's create a scenario to understand this feature.

Let's consider that we want to search a category by name. The following code shows how NamedQuery would help us in this case.

For this, we will use the @NamedQuery and @NamedQueries annotations in a class:

• @NamedQuery: This annotation is used to define a single named query
• @NamedQueries: This annotation is used to define multiple queries

Update the following code in their respective files:

Source file: Category.java

@NamedQuery(name="getCategoryNameByName", query="FROM Category ...