Mixing
How create a constraint with Hibernate?
0
How can I create a constraint with Hibernate? I'm mapping two classes, "Team" and "Match", but I want that a match JUST can happens if the teams are from the same League. The way that I'm doing right now I can create a match with teams from differents leagues (which isn't interesting in this case).
Is there some annotation that "wraps" my teams, home and away, just being from one league? Or I have to do this in my system?
Thanks.
@Table(name = "match")
@Entity
public class Match implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@ManyToOne
@JoinColumn(name = "id_home", referencedColumnName="id")
private Team home;
@ManyToOne
@JoinColumn(name = "id_away", referencedColumnName="id")
private Team away;
@Column
private Integer goalsHome;
@Column
private Integer goalsAway;
@Temporal(value = TemporalType.DATE)
private Date matchDate;
and
@Table(name="team")
@Entity
public class Team implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@Column(length = 55)
private String name;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@OneToMany
private List<Match> match;
java hibernate
asked Nov 20 '18 at 1:01
HawkHawk
85
|
show 6 more comments
0
How can I create a constraint with Hibernate? I'm mapping two classes, "Team" and "Match", but I want that a match JUST can happens if the teams are from the same League. The way that I'm doing right now I can create a match with teams from differents leagues (which isn't interesting in this case).
Is there some annotation that "wraps" my teams, home and away, just being from one league? Or I have to do this in my system?
Thanks.
@Table(name = "match")
@Entity
public class Match implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@ManyToOne
@JoinColumn(name = "id_home", referencedColumnName="id")
private Team home;
@ManyToOne
@JoinColumn(name = "id_away", referencedColumnName="id")
private Team away;
@Column
private Integer goalsHome;
@Column
private Integer goalsAway;
@Temporal(value = TemporalType.DATE)
private Date matchDate;
and
@Table(name="team")
@Entity
public class Team implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@Column(length = 55)
private String name;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@OneToMany
private List<Match> match;
java hibernate
asked Nov 20 '18 at 1:01
HawkHawk
85
do you mean like aJOIN?
– Scary Wombat
Nov 20 '18 at 1:02
@TimBiegeleisen Actually, I translated my classes wrong. Now it's correct, thanks.
– Hawk
Nov 20 '18 at 1:08
@ScaryWombat but join isn't used only for consults?
– Hawk
Nov 20 '18 at 1:08
Sorry I have no idea what you are meaning. Can you show what you want by making SQL?
– Scary Wombat
Nov 20 '18 at 1:11
Is a league associated with a team, or with a match? I think it should only be associated with a team, so removeLeaguefrom yourMatchentity.
– Tim Biegeleisen
Nov 20 '18 at 1:12
|
show 6 more comments
0
0
0
How can I create a constraint with Hibernate? I'm mapping two classes, "Team" and "Match", but I want that a match JUST can happens if the teams are from the same League. The way that I'm doing right now I can create a match with teams from differents leagues (which isn't interesting in this case).
Is there some annotation that "wraps" my teams, home and away, just being from one league? Or I have to do this in my system?
Thanks.
@Table(name = "match")
@Entity
public class Match implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@ManyToOne
@JoinColumn(name = "id_home", referencedColumnName="id")
private Team home;
@ManyToOne
@JoinColumn(name = "id_away", referencedColumnName="id")
private Team away;
@Column
private Integer goalsHome;
@Column
private Integer goalsAway;
@Temporal(value = TemporalType.DATE)
private Date matchDate;
and
@Table(name="team")
@Entity
public class Team implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@Column(length = 55)
private String name;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@OneToMany
private List<Match> match;
java hibernate
asked Nov 20 '18 at 1:01
HawkHawk
85
How can I create a constraint with Hibernate? I'm mapping two classes, "Team" and "Match", but I want that a match JUST can happens if the teams are from the same League. The way that I'm doing right now I can create a match with teams from differents leagues (which isn't interesting in this case).
Is there some annotation that "wraps" my teams, home and away, just being from one league? Or I have to do this in my system?
Thanks.
@Table(name = "match")
@Entity
public class Match implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@ManyToOne
@JoinColumn(name = "id_home", referencedColumnName="id")
private Team home;
@ManyToOne
@JoinColumn(name = "id_away", referencedColumnName="id")
private Team away;
@Column
private Integer goalsHome;
@Column
private Integer goalsAway;
@Temporal(value = TemporalType.DATE)
private Date matchDate;
and
@Table(name="team")
@Entity
public class Team implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@Column(length = 55)
private String name;
@ManyToOne
@JoinColumn(name = "id_league")
private League league;
@OneToMany
private List<Match> match;
java hibernate
java hibernate
asked Nov 20 '18 at 1:01
HawkHawk
85
asked Nov 20 '18 at 1:01
HawkHawk
85
edited Nov 20 '18 at 1:07
Hawk
asked Nov 20 '18 at 1:01
HawkHawk
85
asked Nov 20 '18 at 1:01
HawkHawk
85
asked Nov 20 '18 at 1:01
HawkHawk
85
85
do you mean like aJOIN?
– Scary Wombat
Nov 20 '18 at 1:02
@TimBiegeleisen Actually, I translated my classes wrong. Now it's correct, thanks.
– Hawk
Nov 20 '18 at 1:08
@ScaryWombat but join isn't used only for consults?
– Hawk
Nov 20 '18 at 1:08
Sorry I have no idea what you are meaning. Can you show what you want by making SQL?
– Scary Wombat
Nov 20 '18 at 1:11
Is a league associated with a team, or with a match? I think it should only be associated with a team, so removeLeaguefrom yourMatchentity.
– Tim Biegeleisen
Nov 20 '18 at 1:12
|
show 6 more comments
do you mean like aJOIN?
– Scary Wombat
Nov 20 '18 at 1:02
@TimBiegeleisen Actually, I translated my classes wrong. Now it's correct, thanks.
– Hawk
Nov 20 '18 at 1:08
@ScaryWombat but join isn't used only for consults?
– Hawk
Nov 20 '18 at 1:08
Sorry I have no idea what you are meaning. Can you show what you want by making SQL?
– Scary Wombat
Nov 20 '18 at 1:11
Is a league associated with a team, or with a match? I think it should only be associated with a team, so removeLeaguefrom yourMatchentity.
– Tim Biegeleisen
Nov 20 '18 at 1:12
do you mean like a
JOIN ?– Scary Wombat
Nov 20 '18 at 1:02
do you mean like a
JOIN ?– Scary Wombat
Nov 20 '18 at 1:02
@TimBiegeleisen Actually, I translated my classes wrong. Now it's correct, thanks.
– Hawk
Nov 20 '18 at 1:08
@TimBiegeleisen Actually, I translated my classes wrong. Now it's correct, thanks.
– Hawk
Nov 20 '18 at 1:08
@ScaryWombat but join isn't used only for consults?
– Hawk
Nov 20 '18 at 1:08
@ScaryWombat but join isn't used only for consults?
– Hawk
Nov 20 '18 at 1:08
Sorry I have no idea what you are meaning. Can you show what you want by making SQL?
– Scary Wombat
Nov 20 '18 at 1:11
Sorry I have no idea what you are meaning. Can you show what you want by making SQL?
– Scary Wombat
Nov 20 '18 at 1:11
Is a league associated with a team, or with a match? I think it should only be associated with a team, so remove
League from your Match entity.– Tim Biegeleisen
Nov 20 '18 at 1:12
Is a league associated with a team, or with a match? I think it should only be associated with a team, so remove
League from your Match entity.– Tim Biegeleisen
Nov 20 '18 at 1:12
|
show 6 more comments
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do you mean like a
JOIN?– Scary Wombat
Nov 20 '18 at 1:02
@TimBiegeleisen Actually, I translated my classes wrong. Now it's correct, thanks.
– Hawk
Nov 20 '18 at 1:08
@ScaryWombat but join isn't used only for consults?
– Hawk
Nov 20 '18 at 1:08
Sorry I have no idea what you are meaning. Can you show what you want by making SQL?
– Scary Wombat
Nov 20 '18 at 1:11
Is a league associated with a team, or with a match? I think it should only be associated with a team, so remove
Leaguefrom yourMatchentity.– Tim Biegeleisen
Nov 20 '18 at 1:12