sql - Case-insensitive search using Hibernate

Sql - Case-insensitive search using Hibernate

In Hibernate, you can perform a case-insensitive search by using the LOWER or UPPER functions in conjunction with the Criteria API or HQL (Hibernate Query Language). Here's how you can do it:

Using Criteria API:

Criteria criteria = session.createCriteria(YourEntity.class); criteria.add(Restrictions.ilike("propertyName", "searchTerm", MatchMode.ANYWHERE)); List<YourEntity> results = criteria.list();

In this example:

  • YourEntity.class is the entity class you are querying.
  • "propertyName" is the name of the property you want to search.
  • "searchTerm" is the search term you are looking for.
  • ilike is a case-insensitive version of like.
  • MatchMode.ANYWHERE means the search term can be anywhere in the property value.

Using HQL (Hibernate Query Language):

String hql = "FROM YourEntity e WHERE LOWER(e.propertyName) LIKE :searchTerm"; Query query = session.createQuery(hql); query.setParameter("searchTerm", "%" + searchTerm.toLowerCase() + "%"); List<YourEntity> results = query.list();

In this example:

  • YourEntity is the name of your entity class.
  • e.propertyName is the property you want to search.
  • searchTerm is the search term you are looking for.
  • LOWER is used to convert the property value to lowercase for comparison.
  • LIKE is used to perform a wildcard search.
  • setParameter is used to set the search term parameter, ensuring it is converted to lowercase.

These examples demonstrate how you can perform a case-insensitive search using Hibernate's Criteria API and HQL. Choose the approach that best fits your application's needs and coding style.

Examples

  1. Perform Case-insensitive Search Using Criteria API Description: Use the Criteria API in Hibernate to perform a case-insensitive search.

    Criteria criteria = session.createCriteria(Entity.class); criteria.add(Restrictions.ilike("propertyName", "searchTerm", MatchMode.ANYWHERE)); List<Entity> results = criteria.list();

  2. Perform Case-insensitive Search Using HQL Description: Write a HQL query with the ILIKE keyword to perform a case-insensitive search.

    Query query = session.createQuery("FROM Entity e WHERE lower(e.propertyName) LIKE :searchTerm"); query.setParameter("searchTerm", "%" + searchTerm.toLowerCase() + "%"); List<Entity> results = query.list();

  3. Perform Case-insensitive Search Using CriteriaBuilder Description: Use CriteriaBuilder in Hibernate to construct a query for case-insensitive search.

    CriteriaBuilder builder = session.getCriteriaBuilder(); CriteriaQuery<Entity> query = builder.createQuery(Entity.class); Root<Entity> root = query.from(Entity.class); query.where(builder.like(builder.lower(root.get("propertyName")), "%" + searchTerm.toLowerCase() + "%")); List<Entity> results = session.createQuery(query).getResultList();

  4. Perform Case-insensitive Search Using Native SQL Query Description: Write a native SQL query with the LOWER function to perform a case-insensitive search.

    Query query = session.createNativeQuery("SELECT * FROM Entity WHERE LOWER(propertyName) LIKE :searchTerm", Entity.class); query.setParameter("searchTerm", "%" + searchTerm.toLowerCase() + "%"); List<Entity> results = query.getResultList();

  5. Perform Case-insensitive Search Using CriteriaQuery and Predicate Description: Use CriteriaQuery and Predicate in Hibernate to construct a query for case-insensitive search.

    CriteriaBuilder builder = session.getCriteriaBuilder(); CriteriaQuery<Entity> query = builder.createQuery(Entity.class); Root<Entity> root = query.from(Entity.class); query.where(builder.like(builder.lower(root.get("propertyName")), "%" + searchTerm.toLowerCase() + "%")); List<Entity> results = session.createQuery(query).getResultList();

  6. Perform Case-insensitive Search Using JPQL Query Description: Write a JPQL query with the LOWER function to perform a case-insensitive search.

    TypedQuery<Entity> query = session.createQuery("SELECT e FROM Entity e WHERE lower(e.propertyName) LIKE :searchTerm", Entity.class); query.setParameter("searchTerm", "%" + searchTerm.toLowerCase() + "%"); List<Entity> results = query.getResultList();

  7. Perform Case-insensitive Search Using Restrictions in Criteria Description: Use Restrictions in Hibernate Criteria API to perform a case-insensitive search.

    Criteria criteria = session.createCriteria(Entity.class); criteria.add(Restrictions.ilike("propertyName", searchTerm, MatchMode.ANYWHERE)); List<Entity> results = criteria.list();

  8. Perform Case-insensitive Search Using Named Query Description: Use a named query with the LOWER function to perform a case-insensitive search.

    Query query = session.getNamedQuery("NamedQueryName"); query.setParameter("searchTerm", "%" + searchTerm.toLowerCase() + "%"); List<Entity> results = query.list();

  9. Perform Case-insensitive Search Using Criteria with Example Description: Use Criteria with Example in Hibernate to perform a case-insensitive search.

    Entity exampleEntity = new Entity(); exampleEntity.setPropertyName(searchTerm); Example example = Example.create(exampleEntity).enableLike(MatchMode.ANYWHERE).ignoreCase(); Criteria criteria = session.createCriteria(Entity.class).add(example); List<Entity> results = criteria.list();

  10. Perform Case-insensitive Search Using Named Query and Named Parameter Description: Use a named query with a named parameter to perform a case-insensitive search.

    Query query = session.getNamedQuery("NamedQueryName"); query.setParameter("searchTerm", searchTerm, StringType.INSTANCE); List<Entity> results = query.list();

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