By Vandenburg G.
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Extra resources for Metaprogramming Ruby
Event Handling Sometimes, you may want to react to an event that happened in the container so you can do some custom processing. I’m sure you must be wondering how to get notified upon a bean’s initialization or when its context is refreshed. Also, if you wish to let other beans know that you have finished processing a huge file, for example, how can you notify? Spring provides a way to listen to the events that may allow you to react on the context. And yes, you can use Spring’s framework to publish your custom events, too.
You can use the same MovieRowMapper for returning all movies. update() method to insert/update or delete the data. The following code shows the insertion of Movie into our database. update(sql); } As we have noticed, the JdbcTemplate has eased our burden in accessing the database dramatically. I will advise you to refer Spring’s API for the template methods and their usage. Hibernate Hibernate provides a mapping of database columns to the objects by reading a configuration file. We define the mapping of our domain objects to the table columns in the XML configuration file.
Although it’s not straightforward, it’s not hard to grasp either. The EmployeeCreator is a simple class that creates either employees or executives using two factory methods. See Example 3-6 for the code snippet. Example 3-6. setBonusGrade("GRADE-A"); return emp; } } Declare the bean config (Example 3-7) as shown below: Example 3-7. EmployeeCreator"/> Did you notice that we do not include the class attribute at all? However, the factorybean should refer to the actual bean on which these factory methods were declared.