No Dialect mapping for JDBC type: 2003

Hibernate does not provide and Converter class/Mapper class to convert DB text[] datatype, For this either we can write our own converted type implementing UserType or we using sqlQuery.addScalar( "path", Hibernate.TEXT ); we can map text[] to text and then in java code we can split it from ','

This is how I have solved the issue in SpringBoot:

1. Add dependency to pom.xml:

        <dependency>
            <groupId>com.vladmihalcea</groupId>
            <artifactId>hibernate-types-52</artifactId>
            <version>2.11.1</version>
        </dependency>

2. Extend your Hybernate Dialect as follows:

import com.vladmihalcea.hibernate.type.array.StringArrayType;
import org.hibernate.dialect.PostgreSQL94Dialect;

public class PostgreSQL94CustomDialect extends PostgreSQL94Dialect {

    public PostgreSQL94CustomDialect() {
        super();
        this.registerHibernateType(2003, StringArrayType.class.getName());
    }

}

3. Specify the PostgreSQL94CustomDialect in application.properties:

spring.jpa.properties.hibernate.dialect=com.package.name.PostgreSQL94CustomDialect

Use a package 'com.vladmihalcea:hibernate-types-52:2.8.0' or add your database dialect to yml file in resources:

@Entity
@TypeDefs({
        @TypeDef(name = "string-array", typeClass = StringArrayType.class),
        @TypeDef(name = "json", typeClass = JsonStringType.class),
        @TypeDef(name = "jsonb", typeClass = JsonBinaryType.class)
})
public class Post implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Type(type = "string-array")
    @Column(columnDefinition = "text[]")
    private String[] tags;

One possibility for problem resolution use "UNNEST" postgree function, this can be used as a hint:

SELECT UNNEST({acl_3_3,acl3_4,acl3,acl_3_3})