org.hibernate.QueryException-- ne pouvait pas résoudre la propriété

Question

J'ai une entité comme ci-dessous:

@Entity 
public class Country implements Serializable { 
    private static final long serialVersionUID = 1L; 
    @Id 
    private Long id; 
    @Type(type="secureString") //This is my custom user type and it is working fine in the sense I am able to insert, select and update records using it. 
    private SecureString   nationality; 
    // getters and setters 
} 

La classe SecureString est comme ci-dessous:

public class SecureString implements Serializable { 


    private static final long serialVersionUID = 1L; 
    private String actualValue; 

    private String formattedValue; 
    //getters and setters 
} 

The column name in db for this attibute is named "nationality"

Il est seulement une colonne correspondant à la nationalité. J'utilise Hibernate Custom UserType pour cela. Auparavant, cette propriété était de type String au lieu de SecureString.

Je reçois l'exception java.lang.IllegalArgumentException: org.hibernate.QueryException: could not resolve property: actualValue of: mypackge.Country.

Le HQL formé est:

select s FROM mypackage.Country s 
WHERE LOWER(s.nationality.actualValue) LIKE LOWER(:nationality_actualValue); 

Comme par les journaux, nous pouvons voir que Hibernate essaie de trouver une propriété avec le nom actualValue intérieur Country classe lors de la conversion HQl à SQl. Comment puis-je résoudre ce problème?

REMARQUE: Je souhaite également pouvoir utiliser plusieurs attributs de type SecureString dans la même classe Entity.

Journaux:

at org.hibernate.QueryException.generateQueryException(QueryException.java:120) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:217) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:141) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:77) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:545) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:654) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    ... 142 common frames omitted 
Caused by: org.hibernate.QueryException: could not resolve property: actualValue of: mypackage.Country 
    at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:62) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.persister.entity.AbstractPropertyMapping.toType(AbstractPropertyMapping.java:56) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.persister.entity.AbstractEntityPersister.toType(AbstractEntityPersister.java:1859) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.tree.FromElementType.getPropertyType(FromElementType.java:393) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.tree.FromElement.getPropertyType(FromElement.java:512) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.tree.DotNode.getDataType(DotNode.java:660) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.tree.DotNode.prepareLhs(DotNode.java:264) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.tree.DotNode.resolveInFunctionCall(DotNode.java:178) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.HqlSqlWalker.resolve(HqlSqlWalker.java:1030) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1286) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4699) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.functionCall(HqlSqlBaseWalker.java:2729) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1361) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4699) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:4313) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2134) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2087) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2084) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2084) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2084) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2084) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2062) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.whereClause(HqlSqlBaseWalker.java:813) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:607) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:311) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:259) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:261) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:189) ~[hibernate-core-5.2.8.Final.jar:5.2.8.Final] 
    ... 148 common frames omitted 

Answer 1

Essayez de créer un convertisseur, quelque chose comme ceci:

@Converter 
public class SecureConverter implements AttributeConverter<SecureString, String> 
{ 
    @Override 
    public String convertToDatabaseColumn(SecureString ss) { 
     return ss.getActualValue(); 
    } 
    @Override 
    public SecureString convertToEntityAttribute(String s) 
    { 
     SecureString result = new SecureString(); 
     result.setActualValue(s); 
     return result; 
    } 
} 

et l'utiliser sur votre attribut:

@Entity 
public class Country implements Serializable 
{ 
    private static final long serialVersionUID = 1L; 

    @Id 
    private Long id; 
    @Converter(converter = Secureconverter.class) 
    private SecureString nationality; 

    // getters and setters 
}