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POJPA: constraints violation on delete
 

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    <p>I have three entities -</p> <pre><code>public class ApplicationEntity extends ModelEntity implements Application { @ManyToOne(fetch = FetchType.LAZY, optional = false, cascade = {CascadeType.MERGE, CascadeType.PERSIST, CascadeType.REFRESH}) private CategoryEntity category; @ManyToMany(fetch = FetchType.LAZY, cascade = {CascadeType.MERGE, CascadeType.PERSIST, CascadeType.REFRESH}) @JoinTable( joinColumns = {@JoinColumn(name = "APPLICATION_ID")}, inverseJoinColumns = {@JoinColumn(name = "USER_ID")}, uniqueConstraints = {@UniqueConstraint(columnNames = {"APPLICATION_ID", "USER_ID"}) }) private List&lt;UserEntity&gt; buyers = new ArrayList&lt;UserEntity&gt;();} public class CategoryEntity extends ModelEntity implements Category { @Column(nullable = false) private String name; @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL) private List&lt;ApplicationEntity&gt; applications = new ArrayList&lt;ApplicationEntity&gt;(); } public class UserEntity extends AbstractEntity implements User { } </code></pre> <p>When I try to delete AppliationEntity, I get a constraints violation exception. I tried to remove application entry from CategoryEntity, and then delete the ApplicationEntity. But still fails. The exception is something like --</p> <pre><code> Caused by: java.sql.SQLException: DELETE on table 'APPLICATIONENTITY' caused a violation of foreign key constraint 'FK109DF15D362F642' for key (32779). The statement has been rolled back. at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source) at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source) ... 61 more Caused by: ERROR 23503: DELETE on table 'APPLICATIONENTITY' caused a violation of foreign key constraint 'FK109DF15D362F642' for key (32779). The statement has been rolled back. </code></pre> <p>Any suggestion is highly appreciated. Thanks in Advance.</p>
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