Discussion :

[karim_sousse]

Bonjour tt le monde,

Je suis un étudiant en Projet de fin d'études actuellement, je suis donc déutant dans Hibernate mais je connais un peu les bases du mapping O/R,

J'ai conçu ma base de données en utilisant Merise2 (j'ai utilisé un héritage), je vous poste une partie de mon MCD ainsi que le modèle physique de données relatif à cet MCD.. J'ai implémenté ma base de données et j'ai utilisé Hibernate Synchronizer pour générer les classes de mapping automatiquement..

En essayant de faire une requête select avec HQL à partir d'une classe simple qui contient un main j'obtiens l'erreur suivante : (fin du post)

Je commence par vous poster le schéma de ma base le MCD :
[IMG][/IMG]

Les "features", "requirements", 'design", 'implem".. sont des spécialisations de Artifact (ils hériteront donc des attributs de Artifact) comme le montre le Modèle Physique de données ci-dessous :


Je vous poste mes fichiers hbm (pas tous à cause de la longuer du post) :

Produit.hbm.xml :

Code :

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<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
	"-//Hibernate/Hibernate Mapping DTD//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
 
<hibernate-mapping package="com.oxia.hibernate" default-lazy="false">
	<class
		name="com.oxia.hibernate.Produit"
		table="produit"
	>
		<meta attribute="sync-DAO">true</meta>
 
		<id
			name="Id"
			type="java.lang.Long"
		>
		<column name="id_prod" sql-type="BIGINT"/>
			<generator class="increment"/>
		</id>
 
		<property
			name="NomProd"
			type="string"
		>
		<column name="nom_prod" sql-type="varchar(20)" not-null="false"/>
		</property>
 
 
 
		<property
			name="DateCreation"
			type="timestamp"
		>
		<column name="date_creation" sql-type="timestamp" not-null="true"/>
		</property>
 
 
 
		<property
			name="DateEstimLivr"
			type="timestamp"
		>
		<column name="date_estim_livr" sql-type="timestamp" length="19" not-null="false"/>
		</property>
 
 
 
		<property
			name="ResponsableProd"
			type="string"
		>
		<column name="responsable_prod" sql-type="varchar(30)" not-null="false"/>
		</property>
 
 
 
		<property
			name="ChefProjet"
			type="string"
		>
		<column name="chef_projet" sql-type="varchar(30)" not-null="false"/>
		</property>
 
 
 
		<property
			name="ChargeProd"
			type="string"
		>
		<column name="charge_prod" sql-type="varchar(10)" not-null="false"/>
		</property>
 
 
 
 
		<property
			name="PrioriteProd"
			type="long"
		>
		<column name="priorite_prod" sql-type="int(10)" not-null="false"/>
		</property>
 
 
 
		<property
			name="ObjectifVente"
			type="string"
		>
		<column name="objectif_vente" sql-type="varchar(20)" not-null="false"/>
		</property>
 
 
 
		<set name="Artifacts" inverse="true" lazy="false"
            cascade="persist,save-update">
			<key column="id_prod"/>
			<one-to-many class="com.oxia.hibernate.Artifact"/>
		</set>
 
		<set
			name="Utilisateurs"
			table="gere"
			cascade="all"
		>
			<key column="id_prod"/>
			<many-to-many column="id_user" class="com.oxia.hibernate.Utilisateur"/>
		</set>
 
 
	</class>	
</hibernate-mapping>

Artifact.hbm.xml :

Code :

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<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping
PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 
 
<hibernate-mapping package="com.oxia.hibernate" default-lazy="false" >
	<class 
		name="com.oxia.hibernate.Artifact" 	
		table="artifact"
	>
		<meta attribute="sync-DAO">true</meta>
 
		<id name="Id" type="java.lang.Long">
			<column name="id_art" sql-type="BIGINT"  />
			<generator class="increment" />
		</id>
 
		<property name="NomArt" type="string">
			<column name="nom_art" sql-type="varchar(10)" not-null="false" />
		</property>
 
 
		<property name="verArt" type="string" >
		<column name="ver_art" sql-type="longtext" not-null="false"/>	
		</property>
 
 
		<property name="StatutArt" type="string">
			<column name="statut_art" sql-type="longtext" not-null="false"/>
			</property>
 
 
		<property name="DescriptionArt"  type="string">
			<column name="description_art" sql-type="longtext" not-null="false"/>
			</property>
 
 
 
		<many-to-one name="IdProd" column="id_prod" class="com.oxia.hibernate.Produit"
			not-null="true">
		</many-to-one>
		<set name="DependanceArtsByIdArt" inverse="true" lazy="false"
			cascade="persist,save-update">
			<key column="id_art" />
			<one-to-many class="DependanceArt" />
		</set>
		<set name="DependanceArtsByArtIdArt" inverse="true" lazy="false"
			cascade="persist,save-update">
			<key column="id_art" />
			<one-to-many class="com.oxia.hibernate.DependanceArt" />
		</set>
		<set name="HistoriqueArts" inverse="true" lazy="false"
			cascade="persist,save-update">
			<key column="id_art" />
			<one-to-many class="com.oxia.hibernate.HistoriqueArt" />
		</set>
		<set name="AttachmentArts" table="joint_piece" cascade="all">
			<key column="id_art" />
			<many-to-many column="id_attach" class="com.oxia.hibernate.AttachmentArt" />
		</set>
		<set name="Utilisateurs" table="manip_art" cascade="all">
			<key column="id_art" />
			<many-to-many column="id_user" class="com.oxia.hibernate.Utilisateur" />
		</set>
	</class>
</hibernate-mapping>

Feature.hbm.xml :

Code :

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<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
	"-//Hibernate/Hibernate Mapping DTD//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
 
<hibernate-mapping package="com.oxia.hibernate" default-lazy="false">
	<joined-subclass
		name="com.oxia.hibernate.Feature"
		table="feature"
		extends="com.oxia.hibernate.Artifact"
	>
		<meta attribute="sync-DAO">true</meta>
		<key column="id_art"/>
 
 
		<property
			name="IdProd"
			type="java.lang.Long"
		>
		<column name="id_prod" sql-type="BIGINT" not-null="false"/>
		</property>
 
		<property
			name="NomArt"
			type="string"
		>
		<column name="nom_art" sql-type="varchar(20)" not-null="false"></column>
		</property>
 
 
		<property
			name="VerArt"
			type="string"
		>
		<column name="ver_art" sql-type="longtext" not-null="false"/>
		</property>
 
 
		<property
			name="StatutArt"
			type="string"
		>
		<column name="statut_art" sql-type="longtext" not-null="false"/>
		</property>
 
		<property
			name="DescriptionArt"
			type="string"
		>
		<column name="description_art" sql-type="longtext" not-null="false"/>
		</property>
 
 
		<property
			name="PrioriteFeat"
			type="string"
		>
		<column name="priorite_feat" sql-type="varchar(10)" not-null="false" />
		</property>
 
		<property
			name="DetailsFeat"
			type="string"
		>
		<column name="details_feat" sql-type="longtext" not-null="false"/>
		</property>
 
 
		<many-to-one
			name="FeaIdArt"
			column="fea_id_art"
			class="com.oxia.hibernate.Feature"
			not-null="false"
		>
		</many-to-one>
 
 
		<set name="Features" inverse="true" lazy="false"
            cascade="persist,save-update">
			<key column="id_art"/>
			<one-to-many class="com.oxia.hibernate.Feature"/>
		</set>
 
 
	</joined-subclass>
</hibernate-mapping>

Les POJOs sont implémentés de Pojo.java par extends et implements et leur code se trouve dans les ficheirs Basepojo.java (que je poste ici) :

Produit.java :

Code :

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package com.oxia.hibernate.base;
 
import java.io.Serializable;
 
 
/**
 * This is an object that contains data related to the produit table.
 * Do not modify this class because it will be overwritten if the configuration file
 * related to this class is modified.
 * Modify by Laouini Moez(teamsware)
 * @hibernate.class
 *  table="produit"
 */
 
public abstract class BaseProduit  implements Serializable {
 
	public static String REF = "Produit";
	public static String PROP_CHEF_PROJET = "ChefProjet";
	public static String PROP_PRIORITE_PROD = "PrioriteProd";
	public static String PROP_CHARGE_PROD = "ChargeProd";
	public static String PROP_RESPONSABLE_PROD = "ResponsableProd";
	public static String PROP_ID = "Id";
	public static String PROP_DATE_ESTIM_LIVR = "DateEstimLivr";
	public static String PROP_DATE_CREATION = "DateCreation";
	public static String PROP_NOM_PROD = "NomProd";
	public static String PROP_OBJECTIF_VENTE = "ObjectifVente";
 
 
	// constructors
	public BaseProduit () {
		initialize();
	}
 
	/**
         * Constructor for primary key
         */
	public BaseProduit (java.lang.Long id) {
		this.setId(id);
		initialize();
	}
 
	protected void initialize () {}
 
 
 
	private int hashCode = Integer.MIN_VALUE;
 
	// primary key
	private java.lang.Long id;
 
	// fields
	private java.lang.String nomProd;
	private java.util.Date dateCreation;
	private java.util.Date dateEstimLivr;
	private java.lang.String responsableProd;
	private java.lang.String chefProjet;
	private java.lang.String chargeProd;
	private java.lang.Long prioriteProd;
	private java.lang.String objectifVente;
 
	// collections Modify by laouini Moez (teamsware)
	private java.util.Set artifacts;
	private java.util.Set utilisateurs;
 
 
 
	/**
         * Return the unique identifier of this class
     * @hibernate.id
     *  generator-class="sequence"
     *  column="ID_PROD"
     */
	public java.lang.Long getId () {
		return id;
	}
 
	/**
         * Set the unique identifier of this class
         * @param id the new ID
         */
	public void setId (java.lang.Long id) {
		this.id = id;
		this.hashCode = Integer.MIN_VALUE;
	}
 
 
 
 
	/**
         * Return the value associated with the column: NOM_PROD
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getNomProd () {
		return nomProd;
	}
 
	/**
         * Set the value related to the column: NOM_PROD
         * @param nomProd the NOM_PROD value
         * Modify by laouini Moez (teamsware)
         */
	public void setNomProd (java.lang.String nomProd) {
		this.nomProd = nomProd;
	}
 
 
 
	/**
         * Return the value associated with the column: DATE_CREATION
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Date getDateCreation () {
		return dateCreation;
	}
 
	/**
         * Set the value related to the column: DATE_CREATION
         * @param dateCreation the DATE_CREATION value
         * Modify by laouini Moez (teamsware)
         */
	public void setDateCreation (java.util.Date dateCreation) {
		this.dateCreation = dateCreation;
	}
 
 
 
	/**
         * Return the value associated with the column: DATE_ESTIM_LIVR
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Date getDateEstimLivr () {
		return dateEstimLivr;
	}
 
	/**
         * Set the value related to the column: DATE_ESTIM_LIVR
         * @param dateEstimLivr the DATE_ESTIM_LIVR value
         * Modify by laouini Moez (teamsware)
         */
	public void setDateEstimLivr (java.util.Date dateEstimLivr) {
		this.dateEstimLivr = dateEstimLivr;
	}
 
 
 
	/**
         * Return the value associated with the column: RESPONSABLE_PROD
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getResponsableProd () {
		return responsableProd;
	}
 
	/**
         * Set the value related to the column: RESPONSABLE_PROD
         * @param responsableProd the RESPONSABLE_PROD value
         * Modify by laouini Moez (teamsware)
         */
	public void setResponsableProd (java.lang.String responsableProd) {
		this.responsableProd = responsableProd;
	}
 
 
 
	/**
         * Return the value associated with the column: CHEF_PROJET
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getChefProjet () {
		return chefProjet;
	}
 
	/**
         * Set the value related to the column: CHEF_PROJET
         * @param chefProjet the CHEF_PROJET value
         * Modify by laouini Moez (teamsware)
         */
	public void setChefProjet (java.lang.String chefProjet) {
		this.chefProjet = chefProjet;
	}
 
 
 
	/**
         * Return the value associated with the column: CHARGE_PROD
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getChargeProd () {
		return chargeProd;
	}
 
	/**
         * Set the value related to the column: CHARGE_PROD
         * @param chargeProd the CHARGE_PROD value
         * Modify by laouini Moez (teamsware)
         */
	public void setChargeProd (java.lang.String chargeProd) {
		this.chargeProd = chargeProd;
	}
 
 
 
	/**
         * Return the value associated with the column: PRIORITE_PROD
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.Long getPrioriteProd () {
		return prioriteProd;
	}
 
	/**
         * Set the value related to the column: PRIORITE_PROD
         * @param prioriteProd the PRIORITE_PROD value
         * Modify by laouini Moez (teamsware)
         */
	public void setPrioriteProd (java.lang.Long prioriteProd) {
		this.prioriteProd = prioriteProd;
	}
 
 
 
	/**
         * Return the value associated with the column: OBJECTIF_VENTE
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getObjectifVente () {
		return objectifVente;
	}
 
	/**
         * Set the value related to the column: OBJECTIF_VENTE
         * @param objectifVente the OBJECTIF_VENTE value
         * Modify by laouini Moez (teamsware)
         */
	public void setObjectifVente (java.lang.String objectifVente) {
		this.objectifVente = objectifVente;
	}
 
 
 
	/**
         * Return the value associated with the column: Artifacts
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getArtifacts () {
		return artifacts;
	}
 
	/**
         * Set the value related to the column: Artifacts
         * @param artifacts the Artifacts value
         * Modify by laouini Moez (teamsware)
         */
	public void setArtifacts (java.util.Set artifacts) {
		this.artifacts = artifacts;
	}
 
	public void addToArtifacts (com.oxia.hibernate.Artifact artifact) {
		if (null == getArtifacts()) setArtifacts(new java.util.TreeSet());
		getArtifacts().add(artifact);
	}
 
 
 
	/**
         * Return the value associated with the column: Utilisateurs
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getUtilisateurs () {
		return utilisateurs;
	}
 
	/**
         * Set the value related to the column: Utilisateurs
         * @param utilisateurs the Utilisateurs value
         * Modify by laouini Moez (teamsware)
         */
	public void setUtilisateurs (java.util.Set utilisateurs) {
		this.utilisateurs = utilisateurs;
	}
 
	public void addToUtilisateurs (com.oxia.hibernate.Utilisateur utilisateur) {
		if (null == getUtilisateurs()) setUtilisateurs(new java.util.TreeSet());
		getUtilisateurs().add(utilisateur);
	}
 
 
 
 
	public boolean equals (Object obj) {
		if (null == obj) return false;
		if (!(obj instanceof com.oxia.hibernate.Produit)) return false;
		else {
			com.oxia.hibernate.Produit produit = (com.oxia.hibernate.Produit) obj;
			if (null == this.getId() || null == produit.getId()) return false;
			else return (this.getId().equals(produit.getId()));
		}
	}
 
	public int hashCode () {
		if (Integer.MIN_VALUE == this.hashCode) {
			if (null == this.getId()) return super.hashCode();
			else {
				String hashStr = this.getClass().getName() + ":" + this.getId().hashCode();
				this.hashCode = hashStr.hashCode();
			}
		}
		return this.hashCode;
	}
 
 
	public String toString () {
		return super.toString();
	}
 
 
}

Artifact.java :

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package com.oxia.hibernate.base;
 
import java.io.Serializable;
 
 
/**
 * This is an object that contains data related to the artifact table.
 * Do not modify this class because it will be overwritten if the configuration file
 * related to this class is modified.
 * Modify by Laouini Moez(teamsware)
 * @hibernate.class
 *  table="artifact"
 */
 
public abstract class BaseArtifact  implements Serializable {
 
	public static String REF = "Artifact";
	public static String PROP_DESCRIPTION_ART = "DescriptionArt";
	public static String PROP_NOM_ART = "NomArt";
	public static String PROP_ID_PROD = "IdProd";
	public static String PROP_ID = "Id";
	public static String PROP_VER_ART = "VerArt";
	public static String PROP_STATUT_ART = "StatutArt";
 
 
	// constructors
	public BaseArtifact () {
		initialize();
	}
 
	/**
         * Constructor for primary key
         */
	public BaseArtifact (java.lang.Long id) {
		this.setId(id);
		initialize();
	}
 
	protected void initialize () {}
 
 
 
	private int hashCode = Integer.MIN_VALUE;
 
	// primary key
	private java.lang.Long id;
 
	// fields
	private java.lang.String nomArt;
	private java.lang.String verArt;
	private java.lang.String statutArt;
	private java.lang.String descriptionArt;
 
	// many to one
	private com.oxia.hibernate.Produit idProd;
 
	// collections Modify by laouini Moez (teamsware)
	private java.util.Set dependanceArtsByIdArt;
	private java.util.Set dependanceArtsByArtIdArt;
	private java.util.Set historiqueArts;
	private java.util.Set attachmentArts;
	private java.util.Set utilisateurs;
 
 
 
	/**
         * Return the unique identifier of this class
     * @hibernate.id
     *  generator-class="sequence"
     *  column="ID_ART"
     */
	public java.lang.Long getId () {
		return id;
	}
 
	/**
         * Set the unique identifier of this class
         * @param id the new ID
         */
	public void setId (java.lang.Long id) {
		this.id = id;
		this.hashCode = Integer.MIN_VALUE;
	}
 
 
 
 
	/**
         * Return the value associated with the column: NOM_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getNomArt () {
		return nomArt;
	}
 
	/**
         * Set the value related to the column: NOM_ART
         * @param nomArt the NOM_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setNomArt (java.lang.String nomArt) {
		this.nomArt = nomArt;
	}
 
 
 
	/**
         * Return the value associated with the column: VER_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getVerArt () {
		return verArt;
	}
 
	/**
         * Set the value related to the column: VER_ART
         * @param verArt the VER_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setVerArt (java.lang.String verArt) {
		this.verArt = verArt;
	}
 
 
 
	/**
         * Return the value associated with the column: STATUT_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getStatutArt () {
		return statutArt;
	}
 
	/**
         * Set the value related to the column: STATUT_ART
         * @param statutArt the STATUT_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setStatutArt (java.lang.String statutArt) {
		this.statutArt = statutArt;
	}
 
 
 
	/**
         * Return the value associated with the column: DESCRIPTION_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getDescriptionArt () {
		return descriptionArt;
	}
 
	/**
         * Set the value related to the column: DESCRIPTION_ART
         * @param descriptionArt the DESCRIPTION_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setDescriptionArt (java.lang.String descriptionArt) {
		this.descriptionArt = descriptionArt;
	}
 
 
 
	/**
         * Return the value associated with the column: ID_PROD
         *Modify by laouini Moez (teamsware)
         */
	public com.oxia.hibernate.Produit getIdProd () {
		return idProd;
	}
 
	/**
         * Set the value related to the column: ID_PROD
         * @param idProd the ID_PROD value
         * Modify by laouini Moez (teamsware)
         */
	public void setIdProd (com.oxia.hibernate.Produit idProd) {
		this.idProd = idProd;
	}
 
 
 
	/**
         * Return the value associated with the column: DependanceArtsByIdArt
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getDependanceArtsByIdArt () {
		return dependanceArtsByIdArt;
	}
 
	/**
         * Set the value related to the column: DependanceArtsByIdArt
         * @param dependanceArtsByIdArt the DependanceArtsByIdArt value
         * Modify by laouini Moez (teamsware)
         */
	public void setDependanceArtsByIdArt (java.util.Set dependanceArtsByIdArt) {
		this.dependanceArtsByIdArt = dependanceArtsByIdArt;
	}
 
	public void addToDependanceArtsByIdArt (com.oxia.hibernate.DependanceArt dependanceArt) {
		if (null == getDependanceArtsByIdArt()) setDependanceArtsByIdArt(new java.util.TreeSet());
		getDependanceArtsByIdArt().add(dependanceArt);
	}
 
 
 
	/**
         * Return the value associated with the column: DependanceArtsByArtIdArt
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getDependanceArtsByArtIdArt () {
		return dependanceArtsByArtIdArt;
	}
 
	/**
         * Set the value related to the column: DependanceArtsByArtIdArt
         * @param dependanceArtsByArtIdArt the DependanceArtsByArtIdArt value
         * Modify by laouini Moez (teamsware)
         */
	public void setDependanceArtsByArtIdArt (java.util.Set dependanceArtsByArtIdArt) {
		this.dependanceArtsByArtIdArt = dependanceArtsByArtIdArt;
	}
 
	public void addToDependanceArtsByArtIdArt (com.oxia.hibernate.DependanceArt dependanceArt) {
		if (null == getDependanceArtsByArtIdArt()) setDependanceArtsByArtIdArt(new java.util.TreeSet());
		getDependanceArtsByArtIdArt().add(dependanceArt);
	}
 
 
 
	/**
         * Return the value associated with the column: HistoriqueArts
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getHistoriqueArts () {
		return historiqueArts;
	}
 
	/**
         * Set the value related to the column: HistoriqueArts
         * @param historiqueArts the HistoriqueArts value
         * Modify by laouini Moez (teamsware)
         */
	public void setHistoriqueArts (java.util.Set historiqueArts) {
		this.historiqueArts = historiqueArts;
	}
 
	public void addToHistoriqueArts (com.oxia.hibernate.HistoriqueArt historiqueArt) {
		if (null == getHistoriqueArts()) setHistoriqueArts(new java.util.TreeSet());
		getHistoriqueArts().add(historiqueArt);
	}
 
 
 
	/**
         * Return the value associated with the column: AttachmentArts
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getAttachmentArts () {
		return attachmentArts;
	}
 
	/**
         * Set the value related to the column: AttachmentArts
         * @param attachmentArts the AttachmentArts value
         * Modify by laouini Moez (teamsware)
         */
	public void setAttachmentArts (java.util.Set attachmentArts) {
		this.attachmentArts = attachmentArts;
	}
 
	public void addToAttachmentArts (com.oxia.hibernate.AttachmentArt attachmentArt) {
		if (null == getAttachmentArts()) setAttachmentArts(new java.util.TreeSet());
		getAttachmentArts().add(attachmentArt);
	}
 
 
 
	/**
         * Return the value associated with the column: Utilisateurs
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getUtilisateurs () {
		return utilisateurs;
	}
 
	/**
         * Set the value related to the column: Utilisateurs
         * @param utilisateurs the Utilisateurs value
         * Modify by laouini Moez (teamsware)
         */
	public void setUtilisateurs (java.util.Set utilisateurs) {
		this.utilisateurs = utilisateurs;
	}
 
	public void addToUtilisateurs (com.oxia.hibernate.Utilisateur utilisateur) {
		if (null == getUtilisateurs()) setUtilisateurs(new java.util.TreeSet());
		getUtilisateurs().add(utilisateur);
	}
 
 
 
 
	public boolean equals (Object obj) {
		if (null == obj) return false;
		if (!(obj instanceof com.oxia.hibernate.Artifact)) return false;
		else {
			com.oxia.hibernate.Artifact artifact = (com.oxia.hibernate.Artifact) obj;
			if (null == this.getId() || null == artifact.getId()) return false;
			else return (this.getId().equals(artifact.getId()));
		}
	}
 
	public int hashCode () {
		if (Integer.MIN_VALUE == this.hashCode) {
			if (null == this.getId()) return super.hashCode();
			else {
				String hashStr = this.getClass().getName() + ":" + this.getId().hashCode();
				this.hashCode = hashStr.hashCode();
			}
		}
		return this.hashCode;
	}
 
 
	public String toString () {
		return super.toString();
	}
 
 
}

Feature.java :

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package com.oxia.hibernate.base;
 
import java.io.Serializable;
 
 
/**
 * This is an object that contains data related to the feature table.
 * Do not modify this class because it will be overwritten if the configuration file
 * related to this class is modified.
 * Modify by Laouini Moez(teamsware)
 * @hibernate.class
 *  table="feature"
 */
 
public abstract class BaseFeature extends com.oxia.hibernate.Artifact  implements Serializable {
 
	public static String REF = "Feature";
	public static String PROP_DESCRIPTION_ART = "DescriptionArt";
	public static String PROP_NOM_ART = "NomArt";
	public static String PROP_ID_PROD = "IdProd";
	public static String PROP_DETAILS_FEAT = "DetailsFeat";
	public static String PROP_ID = "Id";
	public static String PROP_FEA_ID_ART = "FeaIdArt";
	public static String PROP_PRIORITE_FEAT = "PrioriteFeat";
	public static String PROP_VER_ART = "VerArt";
	public static String PROP_STATUT_ART = "StatutArt";
 
 
	// constructors
	public BaseFeature () {
		initialize();
	}
 
	/**
         * Constructor for primary key
         */
	public BaseFeature (java.lang.Long id) {
		super(id);
	}
 
 
 
	private int hashCode = Integer.MIN_VALUE;
 
 
	// fields
	private java.lang.Long idProd;
	private java.lang.String nomArt;
	private java.lang.String verArt;
	private java.lang.String statutArt;
	private java.lang.String descriptionArt;
	private java.lang.String prioriteFeat;
	private java.lang.String detailsFeat;
 
	// many to one
	private com.oxia.hibernate.Feature feaIdArt;
 
	// collections Modify by laouini Moez (teamsware)
	private java.util.Set features;
 
 
 
 
 
 
	/**
         * Return the value associated with the column: ID_PROD
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.Long getIdProd () { //ici il y a une erreur : "The return type is incompatible with BaseArtifact.getIdProd()" 
		return idProd;
	}
 
	/**
         * Set the value related to the column: ID_PROD
         * @param idProd the ID_PROD value
         * Modify by laouini Moez (teamsware)
         */
	public void setIdProd (java.lang.Long idProd) {
		this.idProd = idProd;
	}
 
 
 
	/**
         * Return the value associated with the column: NOM_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getNomArt () {
		return nomArt;
	}
 
	/**
         * Set the value related to the column: NOM_ART
         * @param nomArt the NOM_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setNomArt (java.lang.String nomArt) {
		this.nomArt = nomArt;
	}
 
 
 
	/**
         * Return the value associated with the column: VER_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getVerArt () {
		return verArt;
	}
 
	/**
         * Set the value related to the column: VER_ART
         * @param verArt the VER_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setVerArt (java.lang.String verArt) {
		this.verArt = verArt;
	}
 
 
 
	/**
         * Return the value associated with the column: STATUT_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getStatutArt () {
		return statutArt;
	}
 
	/**
         * Set the value related to the column: STATUT_ART
         * @param statutArt the STATUT_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setStatutArt (java.lang.String statutArt) {
		this.statutArt = statutArt;
	}
 
 
 
	/**
         * Return the value associated with the column: DESCRIPTION_ART
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getDescriptionArt () {
		return descriptionArt;
	}
 
	/**
         * Set the value related to the column: DESCRIPTION_ART
         * @param descriptionArt the DESCRIPTION_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setDescriptionArt (java.lang.String descriptionArt) {
		this.descriptionArt = descriptionArt;
	}
 
 
 
	/**
         * Return the value associated with the column: PRIORITE_FEAT
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getPrioriteFeat () {
		return prioriteFeat;
	}
 
	/**
         * Set the value related to the column: PRIORITE_FEAT
         * @param prioriteFeat the PRIORITE_FEAT value
         * Modify by laouini Moez (teamsware)
         */
	public void setPrioriteFeat (java.lang.String prioriteFeat) {
		this.prioriteFeat = prioriteFeat;
	}
 
 
 
	/**
         * Return the value associated with the column: DETAILS_FEAT
         *Modify by laouini Moez (teamsware)
         */
	public java.lang.String getDetailsFeat () {
		return detailsFeat;
	}
 
	/**
         * Set the value related to the column: DETAILS_FEAT
         * @param detailsFeat the DETAILS_FEAT value
         * Modify by laouini Moez (teamsware)
         */
	public void setDetailsFeat (java.lang.String detailsFeat) {
		this.detailsFeat = detailsFeat;
	}
 
 
 
	/**
         * Return the value associated with the column: FEA_ID_ART
         *Modify by laouini Moez (teamsware)
         */
	public com.oxia.hibernate.Feature getFeaIdArt () {
		return feaIdArt;
	}
 
	/**
         * Set the value related to the column: FEA_ID_ART
         * @param feaIdArt the FEA_ID_ART value
         * Modify by laouini Moez (teamsware)
         */
	public void setFeaIdArt (com.oxia.hibernate.Feature feaIdArt) {
		this.feaIdArt = feaIdArt;
	}
 
 
 
	/**
         * Return the value associated with the column: Features
         *Modify by laouini Moez (teamsware)
         */
	public java.util.Set getFeatures () {
		return features;
	}
 
	/**
         * Set the value related to the column: Features
         * @param features the Features value
         * Modify by laouini Moez (teamsware)
         */
	public void setFeatures (java.util.Set features) {
		this.features = features;
	}
 
	public void addToFeatures (com.oxia.hibernate.Feature feature) {
		if (null == getFeatures()) setFeatures(new java.util.TreeSet());
		getFeatures().add(feature);
	}
 
 
 
 
	public boolean equals (Object obj) {
		if (null == obj) return false;
		if (!(obj instanceof com.oxia.hibernate.Feature)) return false;
		else {
			com.oxia.hibernate.Feature feature = (com.oxia.hibernate.Feature) obj;
			if (null == this.getId() || null == feature.getId()) return false;
			else return (this.getId().equals(feature.getId()));
		}
	}
 
	public int hashCode () {
		if (Integer.MIN_VALUE == this.hashCode) {
			if (null == this.getId()) return super.hashCode();
			else {
				String hashStr = this.getClass().getName() + ":" + this.getId().hashCode();
				this.hashCode = hashStr.hashCode();
			}
		}
		return this.hashCode;
	}
 
 
	public String toString () {
		return super.toString();
	}
 
 
}

Et enfin je vous poste la classe de Test et l'erreur :

TestArtifact.java : (juste affichage des enregistrements présents dans la base) :

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package com.oxia.service;
 
import java.util.*;
 
import org.hibernate.*;
import org.hibernate.cfg.Configuration;
 
import com.oxia.hibernate.Artifact;
 
public class TestArtifact {
 
	public TestArtifact() {
		// TODO Auto-generated constructor stub
	}
 
	public static void main(String args[]) throws HibernateException{
 
		selectHQL();
 
 
	}
 
 
	public static void selectHQL(){
 
		Session session = null;
		try{
		    // This step will read hibernate.cfg.xml and prepare hibernate for use
		    SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
		    session =sessionFactory.openSession();
 
		  //Using from Clause
		    String SQL_QUERY ="from Artifact artifact";
		    Query query = session.createQuery(SQL_QUERY);
 
		    for(Iterator it=query.iterate(); it.hasNext();){
 
		    	Artifact art = (Artifact)it.next();
 
		    	System.out.println(" Id art : "+ art.getId());
		    	System.out.println("Nom Artifact : "+art.getNomArt());
		    	System.out.println("Version : "+art.getVerArt());
		    	System.out.println("Statut : "+art.getStatutArt());
		    	System.out.println("Description : "+art.getDescriptionArt());
 
		    	System.out.println("autres details : "+art.getIdProd().getId());
 
		    }
 
		    session.close();
		}
		catch(Exception e){
		    System.out.println(e.getMessage());
		}
 
		}
 
}

l'erreur java est la suivante :

Code :

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...
 
INFO: schema update complete
Hibernate: select ......
17 juin 2009 17:17:39 org.hibernate.property.BasicPropertyAccessor$BasicSetter set
GRAVE: IllegalArgumentException in class: com.oxia.hibernate.base.BaseFeature, setter method of property: IdProd
17 juin 2009 17:17:39 org.hibernate.property.BasicPropertyAccessor$BasicSetter set
GRAVE: expected type: java.lang.Long, actual value: com.oxia.hibernate.Produit
17 juin 2009 17:17:39 org.hibernate.event.def.DefaultLoadEventListener onLoad
INFO: Error performing load command
org.hibernate.PropertyAccessException: IllegalArgumentException occurred while calling setter of com.oxia.hibernate.base.BaseFeature.IdProd
	at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:104)
	at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:337)
	at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:200)
	at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:3564)
	at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:129)
	at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:854)
	at org.hibernate.loader.Loader.doQuery(Loader.java:729)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
	at org.hibernate.loader.Loader.loadEntity(Loader.java:1860)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:48)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:42)
	at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3042)
	at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:395)
	at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:375)
	at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:139)
	at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:179)
	at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:103)
	at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
	at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:846)
	at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:557)
	at org.hibernate.type.EntityType.resolve(EntityType.java:379)
	at org.hibernate.type.EntityType.nullSafeGet(EntityType.java:204)
	at org.hibernate.impl.IteratorImpl.postNext(IteratorImpl.java:93)
	at org.hibernate.impl.IteratorImpl.<init>(IteratorImpl.java:58)
	at org.hibernate.loader.hql.QueryLoader.iterate(QueryLoader.java:405)
	at org.hibernate.hql.ast.QueryTranslatorImpl.iterate(QueryTranslatorImpl.java:380)
	at org.hibernate.engine.query.HQLQueryPlan.performIterate(HQLQueryPlan.java:224)
	at org.hibernate.impl.SessionImpl.iterate(SessionImpl.java:1192)
	at org.hibernate.impl.QueryImpl.iterate(QueryImpl.java:46)
	at com.oxia.service.TestArtifact.selectHQL(TestArtifact.java:36)
	at com.oxia.service.TestArtifact.main(TestArtifact.java:18)
Caused by: java.lang.IllegalArgumentException: argument type mismatch
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:42)
	... 30 more
IllegalArgumentException occurred while calling setter of com.oxia.hibernate.base.BaseFeature.IdProd

J'espère que mon post est clair est bien rédigé, je vous remercie d'avance pour votre aide,

Cordialement