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POHibernate composite key id generator
 

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    <p>I have my entities as below. My data model enforces below and I cannot change referential itegrity. So I am stuck with a composite key. I want to autogenerate/use some generator for orderId </p> <p>Yes I have read below. <a href="http://docs.jboss.org/hibernate/annotations/3.5/reference/en/html_single/#entity-mapping-identifier" rel="nofollow">http://docs.jboss.org/hibernate/annotations/3.5/reference/en/html_single/#entity-mapping-identifier</a></p> <p>I donot want to manage the id generation process as above recommends application generating the orderId.</p> <p>How to make the partial id generator work.. what are my options..would greatly appreciate some thoughts by experts.</p> <pre><code>@Entity @Table(name = "Orders", uniqueConstraints = @UniqueConstraint(columnNames = {"partner_ID", "order_ident" })) public class Order { private OrderId id; public Order() { } @EmbeddedId @AttributeOverrides({ @AttributeOverride(name = "partnerId", column = @Column(name = "partner_ID", nullable = false)), @AttributeOverride(name = "employeeId", column = @Column(name = "employee_ID", nullable = false)), @AttributeOverride(name = "orderId", column = @Column(name = "order_ID", nullable = false)) }) public OrderId getId() { return this.id; } public void setId(OrderId id) { this.id = id; } } @Embeddable public class OrderId extends FactObject { private int partnerId; private int employeeId; private int orderId; public OrderId() { } public OrderId(int partnerId, int employeeId, int orderId) { this.partnerId = partnerId; this.employeeId = employeeId; this.orderId = orderId; } @Column(name = "partner_ID", nullable = false) public int getpartnerId() { return this.partnerId; } public void setpartnerId(int partnerId) { this.partnerId = partnerId; } @Column(name = "employee_ID", nullable = false) public int getemployeeId() { return this.employeeId; } public void setemployeeId(int employeeId) { this.employeeId = employeeId; } @Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="SEQ_STORE") @Column(name = "order_ID",insertable=false, nullable=false, updatable=false) public int getOrderId() { return this.orderId; } public void setOrderId(int orderId) { this.orderId = orderId; } public boolean equals(Object other) { if ((this == other)) return true; if ((other == null)) return false; if (!(other instanceof OrderId)) return false; OrderId castOther = (OrderId) other; return (this.getpartnerId() == castOther.getpartnerId()) &amp;&amp; (this.getemployeeId() == castOther.getemployeeId()) &amp;&amp; (this.getOrderId() == castOther.getOrderId()); } public int hashCode() { int result = 17; result = 37 * result + this.getpartnerId(); result = 37 * result + this.getemployeeId(); result = 37 * result + this.getOrderId(); return result; } } </code></pre>
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    1. COI think this question and answer will help: http://stackoverflow.com/questions/6405746/mapping-manytomany-with-composite-primary-key-and-annotation
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    2. COThanks for link that did not help as you can see I am trying to generate the id for one of the 3 columns which constitute the primary composite key .. At this point I am considering generating OrderID externally and setting it to the object which I don't like .. but not much traction on this post..
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