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POError in Grails/GORM: deleted object would be re-saved by cascade
 

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  1. POError in Grails/GORM: deleted object would be re-saved by cascade
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    <p>Looks like this has been asked many many times before, and I have looked into several of those, including the "<a href="http://spring.io/blog/2010/07/02/gorm-gotchas-part-2/" rel="nofollow">GORM Gotchas (Part 2)</a>" by Peter Ledbrook, but still cannot seem to figure it out in my case. I have a <code>user</code> which has many <code>projects</code>, and a <code>project</code> belongs to a <code>user</code>. Then there is a <code>skill</code> which has many <code>projects</code> associated with it, but a <code>project</code> does NOT belong to a <code>skill</code>. When I try to remove a <code>project</code> from a <code>user</code>, I get that error. The domain classes are as follows:</p> <pre> package grailstuts class User { String name static constraints = { name(nullable: true) } static mapping = { projects cascade: "all-delete-orphan" } static hasMany = [ projects: Project ] } </pre> <pre> package grailstuts class Project { String title static constraints = { title(nullable: true) } static belongsTo = [ user: User ] } </pre> <pre> package grailstuts class Skill { String name static constraints = { name(nullable: true) } static mapping = { projects cascade: "all-delete-orphan" } static hasMany = [ projects: Project ] } </pre> <p>When I run the integration test as follows, the part containing <code>foundUser.removeFromProjects(foundProject1)</code> seems to have the issue.</p> <pre> package grailstuts import spock.lang.* class SkillIntegrationSpec extends Specification { void "adding and deleting projects"() { given: "A user, and projects added to the user" def user = new User().save(failOnError: true) def project1 = new Project(title: "java, groovy") def project2 = new Project(title: "java, scala") user.addToProjects(project1) user.addToProjects(project2) when: "Projects are also added to skill entry" def java = new Skill(name: 'java').save(failOnError: true) java.addToProjects(project1) java.addToProjects(project2) def groovy = new Skill(name: 'groovy').save(failOnError: true) groovy.addToProjects(project1) def scala = new Skill(name: 'scala').save(failOnError: true) scala.addToProjects(project2) then: "Each skill entry has its corresponding projects" Skill.findByName("java").projects.size() == 2 Skill.findByName("groovy").projects.size() == 1 Skill.findByName("scala").projects.size() == 1 when: "Some projects are deleted from the database" def foundUser = User.get(user.id) def foundProject1 = Project.findByTitle("java, groovy") foundUser.removeFromProjects(foundProject1) then: "The deleted projects are also reflected in the skill entry" Skill.findByName("java").projects.size() == 1 Skill.findByName("groovy").projects.size() == 0 Skill.findByName("scala").projects.size() == 1 } } </pre> <p>The first <code>given:... when:... then:...</code> block in the above test verifies fine. In the second <code>when:...</code> block when I try to remove the <code>project</code> from the <code>user</code>, that is when the error seem to occur. The error looks something like this ...</p> <pre> | Running 1 integration test... 1 of 1 | Failure: adding and deleting projects(grailstuts.SkillIntegrationSpec) | org.springframework.dao.InvalidDataAccessApiUsageException: deleted object would be re-saved by cascade (remove deleted object from associations): [grailstuts.Project#2]; nested exception is org.hibernate.ObjectDeletedException: deleted object would be re-saved by cascade (remove deleted object from associations): [grailstuts.Project#2] at org.grails.datastore.gorm.GormStaticApi.methodMissing_closure2(GormStaticApi.groovy:102) at grailstuts.SkillIntegrationSpec.adding and deleting projects(SkillIntegrationSpec.groovy:34) Caused by: org.hibernate.ObjectDeletedException: deleted object would be re-saved by cascade (remove deleted object from associations): [grailstuts.Project#2] ... 2 more | Completed 1 integration test, 1 failed in 0m 0s | Tests FAILED - view reports in C:\Grails\grailstuts\target\test-reports </pre> <p>I am using:</p> <pre> Grails version: 2.3.1 Groovy version: 2.1.8 JVM version: 1.7.0_45 </pre> <p>Have spent quite a bit of time digging for some solution, but no luck yet. Any help would be highly appreciated. Thank you!</p>
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