[英]Hibernate inserts duplicates into one-to-many collection - eager fetch
我有兩個類,monitoringExpression和reportTrigger,具有一對多的關系。 Hibernate試圖從monitoringExpression類持有的集合中保留重復的reportTriggers。 reportTrigger集合中的第一個插入工作正常,但后續插入失敗並出現唯一約束違規,因為hibernate嘗試將同一reportTrigger保留兩次。 這非常類似於已知的hibernate錯誤( Hibernate將重復項插入到@OneToMany集合中 ); 但是,在這種情況下,我們不使用惰性集合。 這是相關代碼:
MonitoringExpression.Class
@Audited
@Entity
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class MonitoringExpression extends GeneratedIdXmlObject{
private String name;
private DeterminantDefinition determinantDefinition;
private String valueExpression;
private String testExpression;
private String messageExpression;
private String messageSeverity;
private boolean setExitStatusWhenTrue;
protected SortedSet<MonitoringExpressionAttribute> attributes = new TreeSet<MonitoringExpressionAttribute>();
private String color;
private Set<ReportTrigger> reportTriggers = new HashSet<ReportTrigger>();
.
.
.
@OneToMany(mappedBy="monitoringExpression",orphanRemoval=true,cascade={CascadeType.ALL},fetch=FetchType.EAGER)
@Sort(type=SortType.NATURAL)
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public SortedSet<MonitoringExpressionAttribute> getAttributes() {
return attributes;
}
public void setAttributes(SortedSet<MonitoringExpressionAttribute> attributes) {
this.attributes = attributes;
}
ReportTrigger.Class
@Audited
@Table(name="ReportTrigger")
@Entity
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class ReportTrigger extends GeneratedIdXmlObject{
private String name;
private String description;
private TriggerableReport report;
private Frequency burstPeriodSize;
private String periodStartExpression;
private String periodEndExpression;
private Set<ReportTriggerParameterMapping> parameterMappings = new HashSet<ReportTriggerParameterMapping>();
private MonitoringExpression monitoringExpression;
@XmlIDREF
@ManyToOne
@Audited
@GraphProcessorOverride(process=false,recurse=false)
@NaturalId(mutable=true)
public TriggerableReport getReport() {
return report;
}
public void setReport(TriggerableReport report) {
this.report = report;
}
@Embedded
public Frequency getBurstPeriodSize() {
return burstPeriodSize;
}
public void setBurstPeriodSize(Frequency burstPeriodSize) {
this.burstPeriodSize = burstPeriodSize;
}
@Audited
@OneToMany(mappedBy="reportTrigger",orphanRemoval=true,cascade={CascadeType.ALL})
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public Set<ReportTriggerParameterMapping> getParameterMappings() {
return parameterMappings;
}
.
.
.
@XmlIDREF
@ManyToOne
@GraphProcessorOverride(process=false,recurse=false)
@NaturalId(mutable=true)
public MonitoringExpression getMonitoringExpression() {
return monitoringExpression;
}
public void setMonitoringExpression(MonitoringExpression monitoringExpression) {
this.monitoringExpression = monitoringExpression;
}
據我所知,我們沒有對reportTrigger集合做任何不尋常的事情(我們顯然不能將兩次相同的跳跳器添加到一個集合中)。 有沒有人見過這樣的東西? 謝謝
Hibernate 3.6.10
Java 8
我想可以做一些檢查如下
- 檢查您獲得的唯一約束違規錯誤是在哪個字段? 它可以位於主鍵列上,但也可以是任何唯一列。
- 如果違規是您的主鍵,那么當您的集合是一個集合時,它可以是2個不同的TriggerableReport但共享相同的鍵值。
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