I know that it has been mentioned couple of times here before, but I really can't make it working for me,
I have two entities: Recipe, Ingredient:
@Entity
@Table(name = "Recipe")
public class Recipe {
@Id
@GeneratedValue
@Column(name = "Recipe_id")
private Long id;
private String name;
private String description;
@Lob
@Basic(fetch = FetchType.LAZY)
@Column(length = 100000)
private byte[] image;
@OneToMany(mappedBy = "recipe", fetch = FetchType.EAGER)
@Cascade({CascadeType.ALL})
private List<Ingredient> ingredientsList;
....
}
and Ingredient:
@Entity
@Table
public class Ingredient {
@Id
@GeneratedValue
private Long id;
private String name;
private int cpt;
private String cptyType;
@ManyToOne
@JoinColumn(name = "Recipe_id")
private Recipe recipe;
....
}
I have also set up JPA Reposiotries, I would like to create custom query which would be equivalent to:
SELECT *
FROM `Recipe`
INNER JOIN `Ingredient` ON Recipe.Recipe_id = Ingredient.Recipe_id
WHERE Ingredient.name = "fancyName"
LIMIT 0 , 30
Until now I've tried with this one:
@Query("Select r from Recipe r join r.id i where i.name = :ingredient")
List<Recipe> findRecipeByIngredient(@Param("ingredient") String ingredient);
End up with expcetion:
Caused by: java.lang.NullPointerException
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromJoinElement(HqlSqlWalker.java:395)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.joinElement(HqlSqlBaseWalker.java:3477)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3263)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3141)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:694)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:550)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:287)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:235)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:248)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:183)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:119)
at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:214)
at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:192)
I've tried with thing such as this:
@Query("Select r from Recipe r join fetch r.ingredientsList where r.name = :ingredient")
List<Recipe> findRecipeByIngredient(@Param("ingredient") String ingredient);
this is not resulting in any errors, but returns empty result.
It is a trival issue, but I don't have any experience with jpql before = /
EDIT:
still getting empty result:
DEBUG (SqlStatementLogger.java:104) - select recipe0_.Recipe_id as Recipe1_1_0_, ingredient1_.id as id0_1_, recipe0_.description as descript2_1_0_, recipe0_.image as image1_0_, recipe0_.name as name1_0_, ingredient1_.cpt as cpt0_1_, ingredient1_.cptyType as cptyType0_1_, ingredient1_.name as name0_1_, ingredient1_.Recipe_id as Recipe5_0_1_, ingredient1_.Recipe_id as Recipe5_1_0__, ingredient1_.id as id0__ from Recipe recipe0_ inner join Ingredient ingredient1_ on recipe0_.Recipe_id=ingredient1_.Recipe_id where ingredient1_.name=?
DEBUG (CollectionLoadContext.java:224) - No collections were found in result set for role: com.bla.model.Recipe.ingredientsList
EDIT 2:
after removing fetch from statement:
DEBUG (SqlStatementLogger.java:104) - select recipe0_.Recipe_id as Recipe1_1_, recipe0_.description as descript2_1_, recipe0_.image as image1_, recipe0_.name as name1_ from Recipe recipe0_ inner join Ingredient ingredient1_ on recipe0_.Recipe_id=ingredient1_.Recipe_id where ingredient1_.name=?
DEBUG (StatefulPersistenceContext.java:899) - Initializing non-lazy collections