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HQL syntax error - unexpected token in hibernate

Why does this HQL throw me the unexpected token? I've searched elsewhere for answers, but I can't really see where's the error in my syntax (it's probably a hql syntax error).
String hql = "from employee";
if(jCheckBox1.isSelected()){ //NAME
hql = "from employee where employee.name = "+nameField.getText();
if(jCheckBox2.isSelected()){
int value = (Integer)ageSpinner.getValue();//AGE
hql = "from employee where employee.name = "+nameField.getText() + " and where employee.age = "+value;
if(jCheckBox3.isSelected()){//ADDRESS
hql = "from employee where employee.name = "+nameField.getText() + " and where employee.age = "+value+" and where employee.address = " + addressField.getText();
if(jCheckBox4.isSelected()){//SALARY
hql = "from employee where employee.name = "+nameField.getText() + " and where employee.age = "+value+" and where employee.address = " + addressField.getText()+" and where employee.salary = " + jSlider1.getValue();
}
}
}
}

If someone was wondering what the actual error was: it was the punctuation.
I've written where employee.name = value instead of where employee.name = 'value'

Problem with querying entities with a set of entities in Spring Boot #Query

I want to have a Spring Boot #Query in JpaRepository which returns me entities with a set of other entities. I know that I can use findAll() method, and then take only those rows that I'm interested in, but I think that this is much slower. The problem is that my entity Booster contains a Set of other entities Boost, and when i try to query it, I get an error. So, this is my Query:
#Query( "select new app.model.Booster(" +
" B.id, " +
" B.active, " +
" B.games, " +
" B.ownerAccount, " +
" B.boosts, " +
" B.boosterNickname, " +
" B.additionalInformation) " +
"from " +
" Booster B " +
" left join Boost Bo on B.id = Bo.boostingAccount.id " +
"where " +
" B.games like %?1% " +
" and Bo.finished = true " +
"group by " +
" B.id")
List<Booster> findBoostersForOverview(String game);
These are my entity classes:
#Data
#Entity(name = "Booster")
public class Booster {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private long id;
private boolean active;
private String games;
#OneToOne(mappedBy = "boosterAccount", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private Account ownerAccount;
#OneToMany(mappedBy = "boostingAccount", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private Set<Boost> boosts;
private String boosterNickname;
private String additionalInformation;
#Data
#Entity(name = "Boost")
public class Boost {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name="id",nullable=false,unique=true)
private long id;
private Date dateCreated;
private Date dateFinished;
private Date dateLastModification;
private boolean finished;
private boolean paused;
#ManyToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "boosted_account_id", referencedColumnName = "id")
private Account boostedAccount;
#ManyToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "boosting_account_id", referencedColumnName = "id")
private Booster boostingAccount;
#OneToMany(mappedBy = "boost", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private Set<Game> games;
private String game;
private String additionalInformation;
private String server;
This is what console shows:
Hibernate:
select
booster0_.id as col_0_0_,
booster0_.active as col_1_0_,
booster0_.games as col_2_0_,
booster0_.id as col_3_0_,
. as col_4_0_,
booster0_.booster_nickname as col_5_0_,
booster0_.additional_information as col_6_0_
from
booster booster0_
//HERE IS SOME MORE LOGS THAT ARE UNNECESSARY HERE
And this is error i get:
java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '. as col_4_0_, booster0_.booster_nickname as col_5_0_, booster0_.additional_info' at line 1
I know that I can query without Set of Boost, and then in another query get specific Boosts, but in my app there will be a lot of SQL and my code will turn to spaghetti. Is there a simple way to solve my problem?

Can you add the following to your repository without any #Query annotation and see?
List<Booster> findByGamesLikeAndBoostsFinishedIsTrue(String game);

The problem here, you are using GROUP BY. When you are using Group By you have use aggregate functions (COUNT, MAX, MIN, SUM, AVG) to group the result-set by one or more columns in the select column. Aggregate functions are mandatory when using GROUP BY function.
In your case, I hope Group By is not required. Modify your code like below.
#Query( "select new app.model.Booster(" +
" B.id, " +
" B.active, " +
" B.games, " +
" B.ownerAccount, " +
" B.boosts, " +
" B.boosterNickname, " +
" B.additionalInformation) " +
"from " +
" Booster B " +
" left join Boost Bo on B.id = Bo.boostingAccount.id " +
"where " +
" B.games like %?1% " +
" and Bo.finished = true")
List<Booster> findBoostersForOverview(String game);

Malformed query using IN

I have this structure:
public enum SaleItemType {
CRUISE,
DAILY_HOSTING
}
public class Estimate {
...
private List<SaleItemType> interestedSaleItemTypes;
#Column(name = "sale_item_type")
#CollectionTable(name = "estimate_sale_item_type", joinColumns = #JoinColumn(name = "estimate_id"))
#ElementCollection(targetClass = SaleItemType.class)
#Enumerated(EnumType.STRING)
public List<SaleItemType> getInterestedSaleItemTypes() {
return interestedSaleItemTypes;
}
}
And i'm trying to do a simple query:
String q = "FROM " + Estimate.class.getSimpleName() + " e" + " WHERE e.interestedSaleItemTypes IN :a";
TypedQuery<Estimate> query1 = getEm().createQuery(q, Estimate.class);
query1.setParameter("a", EnumSet.of(SaleItemType.CRUISE));
query1.getResultList();
I'm getting this query(and error) on the log:
DEBUG SQL:92 - select estimate0_.id as id1_25_, estimate0_.average_ticket as average_2_25_, estimate0_.description as descript3_25_, estimate0_.end_date as end_date4_25_, estimate0_.pax_quantity as pax_quan5_25_, estimate0_.start_date as start_da6_25_ from estimate estimate0_ cross join estimate_sale_item_type interested1_ where estimate0_.id=interested1_.estimate_id and (. in (?))
DEBUG SqlExceptionHelper:124 - could not extract ResultSet [n/a]
org.postgresql.util.PSQLException: No value specified for parameter 1.
Why hibernate is doing this query?
Im using Hibernate 5.1 Final

The IN expression can be used to test if a value is in a collection but interestedSaleItemTypes is not a simple value but itself a collection. Therefore use MEMBER OF:
String q = "FROM Estimate e WHERE :a MEMBER OF e.interestedSaleItemTypes";
TypedQuery<Estimate> query1 = getEm().createQuery(q, Estimate.class);
query1.setParameter("a", SaleItemType.CRUISE);

Did you try to put parenthesis in your IN clause?
I don't know if it's required, but in all tutorials that I found, always had the parenthesis. http://www.postgresqltutorial.com/postgresql-in/
Also, as the IN clause is expecting a list of values you can use the setParameterList instead of setParameter.
Try this:
String q = "FROM " + Estimate.class.getSimpleName() + " e" + " WHERE e.interestedSaleItemTypes IN (:a)";
TypedQuery<Estimate> query1 = getEm().createQuery(q, Estimate.class);
query1.setParameterList("a", EnumSet.of(SaleItemType.CRUISE));
query1.getResultList();

How to map Results when Querying raw SQL using Ebean

Using Postgres Tables created by Ebean, I would like to query these tables with a hand-written statement:
SELECT r.name,
r.value,
p.name as param1,
a.name as att1,
p2.name as param2,
a2.name as att2
FROM compatibility c
JOIN attribute a ON c.att1_id = a.id
JOIN attribute a2 ON c.att2_id = a2.id
JOIN PARAMETER p ON a.parameter_id = p.id
JOIN PARAMETER p2 ON a2.parameter_id = p2.id
JOIN rating r ON c.rating_id = r.id
WHERE p.problem_id = %d
OR p2.problem_id = %d
Each of the joined tables represent one of my model classes.
The query executes fine, but I don't know how I would proceed:
How do I even execute the query using Play 2.2. and Ebean?
How can I map this query to an iterable object? Do I need to create a Model class which contains all the fields from the query, or can I use some sort of HashMap?
How can I parameterize the query in a safe way?

To execute this query you need to use RawSql class. You will also have to create class to which results will be casted.
Here is a code of exemplary result class:
import javax.persistence.Entity;
import com.avaje.ebean.annotation.Sql;
#Entity
#Sql
public class Result {
String name;
Integer value;
String param1;
String param2;
String att1;
String att2;
}
And example of executing this query:
String sql
= " SELECT r.name,"
+ " r.value,"
+ " p.name as param1,"
+ " a.name as att1,"
+ " p2.name as param2,"
+ " a2.name as att2"
+ " FROM compatibility c"
+ " JOIN attribute a ON c.att1_id = a.id"
+ " JOIN attribute a2 ON c.att2_id = a2.id"
+ " JOIN PARAMETER p ON a.parameter_id = p.id"
+ " JOIN PARAMETER p2 ON a2.parameter_id = p2.id"
+ " JOIN rating r ON c.rating_id = r.id"
+ " WHERE p.problem_id = %d"
+ " OR p2.problem_id = %d"
RawSql rawSql =
RawSqlBuilder
.parse(sql)
.columnMapping("r.name", "name")
.columnMapping("r.value", "value")
.create();
Query<Result> query = Ebean.find(Result.class);
query.setRawSql(rawSql)
.where().gt("amount", 10);
List<Result> list = query.findList();

Query update using hibernate runs into QueryException : Unable to resolve path

I have following entities, and need to update a field that is in a specific field and its removedDate is null. But the following code returns exception.
#Entity
public class Cart implements Serializable {
#Id
#GeneratedValue
private Long id;
#OneToMany(cascade = CascadeType.ALL)
#LazyCollection(LazyCollectionOption.FALSE)
private List<CartItem> items;
public Cart() {
}
getters and setters
}
#Entity
public class CartItem {
#Id
#GeneratedValue
private long id;
#ManyToOne
private Product pro;
#Temporal(javax.persistence.TemporalType.TIMESTAMP)
private Date addedDate;
#Temporal(javax.persistence.TemporalType.TIMESTAMP)
private Date removedDate;
getters and setters
}
Hibernate Code 1
Query query = session.createQuery("UPDATE CartItem SET removedDate = :currentDateTime "
+ " WHERE CartItem.id IN (Select Cart.items.id From Cart"
+ " WHERE Cart.id = :cartId"
+ " AND Cart.items.pro.id = :pro"
+ " AND Cart.items.removedDate is null)");
query.setParameter("currentDateTime", dt.getCurrentDateTime());
query.setParameter("cartId", cartId);
query.setParameter("pro", proId);
int result = query.executeUpdate();
Exception of Code 1
SEVERE: org.hibernate.QueryException: Unable to resolve path [CartItem.id], unexpected
token [CartItem] [UPDATE com.myproject.CartItem SET removedDate =
:currentDateTime WHERE CartItem.id IN (Select Cart.items.id From
com.myproject.Cart WHERE Cart.id = :cartId AND cart.items.pro.id = :proId
AND Cart.items.removedDate is null))]
at org.hibernate.hql.internal.ast.tree.IdentNode.resolveAsNakedComponentPropertyRefLHS(IdentNode.java:245)
at org.hibernate.hql.internal.ast.tree.IdentNode.resolve(IdentNode.java:110)
at org.hibernate.hql.internal.ast.tree.DotNode.resolveFirstChild(DotNode.java:177)
at org.hibernate.hql.internal.ast.HqlSqlWalker.lookupProperty(HqlSqlWalker.java:577)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.addrExpr(HqlSqlBaseWalker.java:4719)
Hibernate Code 2
Query query = session.createQuery("UPDATE CartItem SET removedDate = :currentDateTime "
+ " WHERE id IN (Select items.id From Cart"
+ " WHERE id = :CartId"
+ " AND items.pro.id = :pro"
+ " AND items.removedDate is null)");
Exception of Code 2
SEVERE: org.hibernate.QueryException: illegal attempt to dereference collection
[{synthetic-alias}{non-qualified-property-ref}items] with element property
reference [id] [UPDATE com.myproject.CartItem SET removedDate =
:currentDateTime WHERE id IN (Select items.id From com.myproject.Cart WHERE
id = :cartId AND items.pro.id = :pro AND items.removedDate is null)]
at org.hibernate.hql.internal.ast.tree.DotNode$1.buildIllegalCollectionDereferenceException(DotNode.java:68)
at org.hibernate.hql.internal.ast.tree.DotNode.checkLhsIsNotCollection(DotNode.java:550)
at org.hibernate.hql.internal.ast.tree.DotNode.resolve(DotNode.java:246)
at org.hibernate.hql.internal.ast.tree.FromReferenceNode.resolve(FromReferenceNode.java:118)
at org.hibernate.hql.internal.ast.tree.FromReferenceNode.resolve(FromReferenceNode.java:114)

Why don't you make your association bidirectional?
Add this to your CartItem entity:
#ManyToOne
private Cart cart;
Set the mappedBy on your cartItem fied in Cart:
#OneToMany(cascade = CascadeType.ALL, mappedBy="cart")
#LazyCollection(LazyCollectionOption.FALSE)
private List<CartItem> items;
The resulting HQL would be much simpler (and should work):
"UPDATE CartItem c SET c.removedDate = :currentDateTime "
+ " WHERE c.cart.id = :cartId"
+ " AND c.pro.id = :pro"
+ " AND c.removedDate is null"

Try this by adding an alias in the inner select query.
Query query = session.createQuery("UPDATE CartItem SET removedDate = :currentDateTime "
+ " WHERE id IN (Select cart.items.id From Cart cart"
+ " WHERE cart.id = :CartId"
+ " AND cart.items.pro.id = :pro"
+ " AND cart.items.removedDate is null)");
EDIT 2
I did a bit of reading and found out that the object.collection.id works only for a 1:1 or an N:1 relation, not for a 1:N relation, which is what you have. Try this.
SELECT items.id
FROM Cart cart
LEFT JOIN cart.items items
WHERE cart.id = :CartId AND items.pro.id = :pro AND items.removedDate is null
Here is more info, info, info

Thanks to Hrishikesh's comment, I found the answer by providing the exact SQLQuery.
UPDATE cartItem SET removedDate = :currentDateTime"
+ " WHERE pro = :pro"
+ " AND removedDate IS NULL"
+ " AND id IN
( SELECT items_id from Cart_CartItem WHERE Cart_id = :CartId)

Try that:
Query query = session.createQuery("UPDATE CartItem SET removedDate = :currentDateTime "
+ " WHERE id IN (Select ci.id From Cart c inner join c.items ci"
+ " WHERE c.id = :cartId"
+ " AND ci.pro.id = :pro"
+ " AND ci.removedDate is null)");