[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-1982) Merge doesnt work with composite keys

Merge doesnt work with composite keys ------------------------------------- Key: HHH-1982 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1982 Project: Hibernate3 Type: Bug

Components: core Versions: 3.1.3 Reporter: Jara Cesnek Fix For: 3.2.0.cr4

Merge() operation as defined in JSR220 works fine with our entities with simple keys. But on tables with composite keys same doesnt works. Hibernate always try insert into table even when should only update. @IdClass(DOGaa_smlouva_dodatek.DOGaa_smlouva_dodatekPk.class) @MappedSuperclass public abstract class DOGaa_smlouva_dodatek { @Id protected Integer id_pripad; @Id protected Integer pc_smlouva_dodatek; @Embeddable public static class DOGaa_smlouva_dodatekPk implements Serializable { protected Integer id_pripad; public Integer getId_pripad() { return id_pripad; } public void setId_pripad(Integer id_pripad) { this.id_pripad = id_pripad; } protected Integer pc_smlouva_dodatek; public Integer getPc_smlouva_dodatek() { return pc_smlouva_dodatek; } public void setPc_smlouva_dodatek(Integer pc_smlouva_dodatek) { this.pc_smlouva_dodatek = pc_smlouva_dodatek; } public boolean equals(Object other){ if ( !(other instanceof DOGaa_smlouva_dodatekPk) ) {return false;} DOGaa_smlouva_dodatekPk castOther = (DOGaa_smlouva_dodatekPk) other; return new EqualsBuilder() .append(id_pripad,castOther.id_pripad) .append(pc_smlouva_dodatek,castOther.pc_smlouva_dodatek) .isEquals(); } public int hashCode() { return new HashCodeBuilder() .append(id_pripad) .append(pc_smlouva_dodatek) .toHashCode(); } } } Second thing is when we try delete entity through merge on composite keys: doAttach = (DOParent) hao.getHibernateTemplate().merge(doDetach); hao.getHibernateTemplate().delete(doAttach); hibernate try first insert too and then delete. When entity has simple key this code work fine.