Hibernate Regexp MySQL

Question

I ask this question to show how MySQL and Hibernate work each other with Regular Expressions.

The problem:

SELECT * FROM table WHERE regexp column \'         


        

Answer 1

REGEXP is treated as a keyword in MySQL. User can use REGEXP in hibernate filter by registering the keyword. Create a class 'CustomMySQL5InnoDBDialect' extending MySQL5InnoDBDialect and register the keyword as follows :

public class CustomMySQL5InnoDBDialect extends MySQL5InnoDBDialect {

public CustomMySQL5InnoDBDialect() {
    super();
   /* register regexp keyword */
    registerKeyword("regexp");
}
}

Then change the hibernate-dialect property in persistence.xml as

User can use the regexp in hibernate filter as follows

@Filters(value = {  @Filter(name="applyStudentFilter",condition="id in (select s.id from student s WHERE s.address REGEXP :addressValue)"),
})