JPA does not create subclasses

i am working on a project with springMvc and JPA Eclipselink , i've created some beans and eclipselink created the tables , but my problem is that i've some inheritence relations : Person with Quality Analyst , the table Person is created but the table Quality analyst is not created.

this is the SuperClass Personne, no problem here . package com.hpcdg.quality.entities.Acteurs; import java.util.Date;

            import javax.persistence.Column;
            import javax.persistence.DiscriminatorColumn;
            import javax.persistence.DiscriminatorValue;
            import javax.persistence.Entity;
            import javax.persistence.GeneratedValue;
            import javax.persistence.GenerationType;
            import javax.persistence.Id;
            import javax.persistence.Inheritance;
            import javax.persistence.Table;
            import javax.persistence.Temporal;
            import javax.persistence.TemporalType;
            import javax.persistence.InheritanceType;
            import javax.persistence.DiscriminatorType;
            @Entity
            @Table(name="Personne")
            @Inheritance(strategy=InheritanceType.SINGLE_TABLE)
            @DiscriminatorColumn(name="discriminator",
            discriminatorType=DiscriminatorType.STRING
            )
            @DiscriminatorValue(value="per")
            public class Personne {

                @Id 
                @GeneratedValue(strategy=GenerationType.IDENTITY)
                private int personneID;

                @Column
                private String matriculation;

                @Column
                private String nom;

                @Column
                private String prenom;

                @Column
                private String email;

                @Column
                private String telephone;

                @Temporal(TemporalType.DATE)
                @Column
                private Date anc;

                @Temporal(TemporalType.DATE)
                @Column
                private Date enposte;

                @Column
                private String poste;

                public String getPoste() {
                    return poste;
                }
                public void setPoste(String poste) {
                    this.poste = poste;
                }
                public int getPersonneID() {
                    return personneID;
                }
                public void setPersonneID(int personneID) {
                    this.personneID = personneID;
                }
                public String getMatriculation() {
                    return matriculation;
                }
                public void setMatriculation(String matriculation) {
                    this.matriculation = matriculation;
                }
                public String getNom() {
                    return nom;
                }
                public void setNom(String nom) {
                    this.nom = nom;
                }
                public String getPrenom() {
                    return prenom;
                }
                public void setPrenom(String prenom) {
                    this.prenom = prenom;
                }
                public String getEmail() {
                    return email;
                }
                public void setEmail(String email) {
                    this.email = email;
                }
                public String getTelephone() {
                    return telephone;
                }
                public void setTelephone(String telephone) {
                    this.telephone = telephone;
                }
                public Date getAnc() {
                    return anc;
                }
                public void setAnc(Date anc) {
                    this.anc = anc;
                }
                public Date getEnposte() {
                    return enposte;
                }
                public void setEnposte(Date enpost) {
                    this.enposte = enpost;
                }


            }

and now the Quality Analyst bean , not created in the db package com.hpcdg.quality.entities.Acteurs;

        import javax.persistence.Column;
        import javax.persistence.DiscriminatorValue;
        import javax.persistence.Entity;
        import javax.persistence.Table;

        @Entity
        @Table(name="QualityAnalyst")
        @DiscriminatorValue("QA")

        public class QualityAnalyst extends PersonneAvecEcoute {

            @Column
            private int id;

            public int getId() {
                return id;
            }

            public void setId(int id) {
                this.id = id;
            }

        }

and finaly my persistance.xml

            <?xml version="1.0" encoding="UTF-8"?>
            <persistence version="2.1"
                xmlns="http://ift.tt/1cKbVbQ" xmlns:xsi="http://ift.tt/ra1lAU"
                xsi:schemaLocation="http://ift.tt/1cKbVbQ http://ift.tt/1kMb4sd">
                <persistence-unit name="SpringData"
                    transaction-type="RESOURCE_LOCAL">

                            <class>com.hpcdg.quality.entities.Authentification.Role</class>  
                            <class>com.hpcdg.quality.entities.Authentification.Compte</class>
                            <class>com.hpcdg.quality.entities.Acteurs.Personne</class>
                            <class>com.hpcdg.quality.entities.Acteurs.Agent</class>
                            <class>com.hpcdg.quality.entities.Acteurs.Coach</class>
                            <class>com.hpcdg.quality.entities.Acteurs.Formateur</class>
                            <class>com.hpcdg.quality.entities.Acteurs.PersonneAvecEcoute</class> 
                            <class>com.hpcdg.quality.entities.Acteurs.QualityAnalyst</class> 
                            <class>com.hpcdg.quality.entities.Acteurs.SDM</class>
                            <class>com.hpcdg.quality.entities.Acteurs.SDS</class>
                            <class>com.hpcdg.quality.entities.Acteurs.TeamLeader</class>



                    <properties>
                        <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/QualityDB" />
                        <property name="javax.persistence.jdbc.user" value="root" />
                        <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
                        <property name="javax.persistence.jdbc.password" value="" />
                        <property name="eclipselink.logging.level" value="OFF" />
                        <property name="eclipselink.ddl-generation" value="create-or-extend-tables" />
                        <property name="eclipselink.ddl-generation.output-mode" value="database" />
                    </properties>  
                </persistence-unit>
            </persistence>

hope that you can help me with that, why my quality analyst entity is not persisting in my db