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我有形式，其中我決定選擇字段像OrganizationalCell：當我選擇一個選項FE：OrganizationalCellUnit，我不得不atach與實體OrganizationalCellUnit，另一個輸入端僅在該配置中是必需的。JPA /休眠@ManyToOne把零誤差：org.hibernate.TransientPropertyValueException：
當我選擇其他值時，這個值不再是（OrganizationalCellUnit）。
我有我的實體，我想堅持：
@ManyToOne(cascade = CascadeType.MERGE)
public OrganizationalCell organizationalCell;
@ManyToOne(cascade = CascadeType.MERGE)
@Nullable
public OutPatientClinic outPatientClinic;
@ManyToOne(cascade = CascadeType.MERGE)
@Nullable
public Workshop workshop;
@ManyToOne(cascade = CascadeType.MERGE)
public OrganizationalCellUnit organizationalCellUnit = null;
/** The clinic. */
@ManyToOne(cascade = CascadeType.MERGE)
public models.Clinic clinic;
/** The unit. */
@ManyToOne(cascade = CascadeType.MERGE)
public models.Unit unit;
而且我得到一個錯誤：
Caused by: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing: models.MedicalIncident.organizationalCellUnit -> models.OrganizationalCellUnit
在DB這些領域允許nullabe值。
如何使這個領域不是強制性的，並把休眠空值在DB
---更新---- CascadeType的更新到所有對多對一的關係後，我有這樣的錯誤：
play.api.Application$$anon$1: Execution exception[[ConstraintViolationException: Validation failed for classes [models.OrganizationalCellUnit] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='error.required', propertyPath=updateUser, rootBeanClass=class models.OrganizationalCellUnit, messageTemplate='error.required'}
ConstraintViolationImpl{interpolatedMessage='error.required', propertyPath=name, rootBeanClass=class models.OrganizationalCellUnit, messageTemplate='error.required'}
ConstraintViolationImpl{interpolatedMessage='error.required', propertyPath=creationUser, rootBeanClass=class models.OrganizationalCellUnit, messageTemplate='error.required'}
]]]
at play.api.Application$class.handleError(Application.scala:293) ~[play_2.10-2.2.4.jar:2.2.4]
at play.api.DefaultApplication.handleError(Application.scala:399) [play_2.10-2.2.4.jar:2.2.4]
at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.4.jar:2.2.4]
at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.4.jar:2.2.4]
at scala.Option.map(Option.scala:145) [scala-library.jar:na]
at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3.applyOrElse(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.4.jar:2.2.4]
Caused by: javax.validation.ConstraintViolationException: Validation failed for classes [models.OrganizationalCellUnit] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='error.required', propertyPath=updateUser, rootBeanClass=class models.OrganizationalCellUnit, messageTemplate='error.required'}
ConstraintViolationImpl{interpolatedMessage='error.required', propertyPath=name, rootBeanClass=class models.OrganizationalCellUnit, messageTemplate='error.required'}
ConstraintViolationImpl{interpolatedMessage='error.required', propertyPath=creationUser, rootBeanClass=class models.OrganizationalCellUnit, messageTemplate='error.required'}
]
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:159) ~[hibernate-core-4.2.0.CR1.jar:4.2.0.CR1]
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:94) ~[hibernate-core-4.2.0.CR1.jar:4.2.0.CR1]
at org.hibernate.action.internal.EntityIdentityInsertAction.preInsert(EntityIdentityInsertAction.java:178) ~[hibernate-core-4.2.0.CR1.jar:4.2.0.CR1]
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:75) ~[hibernate-core-4.2.0.CR1.jar:4.2.0.CR1]
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362) ~[hibernate-core-4.2.0.CR1.jar:4.2.0.CR1]
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:203) ~[hibernate-core-4.2.0.CR1.jar:4.2.0.CR1]
---編輯新增
public class OrganizationalCellUnit extends GenericDictionary<OrganizationalCellUnit> {}
@MappedSuperclass
public abstract class GenericDictionary<T extends Generic<T>> extends Generic<T> {
@Required
public String name;
@Required
public boolean active = true;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public boolean getActive() {
return active;
}
public void setActive(boolean stat) {
this.active = stat;
}
/**
* Options.
*
* @return the map
*/
public Map<String, String> getOptions() {
return getOptions(getList());
}
public Map<String, String> getOptions(List<T> list) {
LinkedHashMap<String, String> options = new LinkedHashMap<String, String>();
for (T e : list) {
GenericDictionary<?> entity = (GenericDictionary<?>) e;
if(entity.active==true) {
options.put(e.id.toString(), entity.name);
}
}
return options;
}
public void on() {
this.active = true;
update();
}
public void off() {
this.active = false;
update();
}
public abstract String getFieldDescription(String name);
@Override
public boolean equals(Object other) {
if (other == null) return false;
if (other == this) return true;
if (!(other instanceof GenericDictionary))return false;
GenericDictionary<?> otherMyClass = (GenericDictionary<?>) other;
return name.equals(otherMyClass.name);
}
@MappedSuperclass
public abstract class Generic<T extends Generic> {
@Transient
public Class<T> entityClass;
Generic() {
entityClass = ((Class) ((Class) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0]));
}
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
public Long id;
@ManyToOne(cascade = CascadeType.MERGE)
@Constraints.Required
public User creationUser;
@ManyToOne(cascade = CascadeType.MERGE)
@Constraints.Required
public User updateUser;
@Constraints.Required
public String creationDate = Index.getDate(null);
@Constraints.Required
public String updateDate = Index.getDate(null);
public User getCreationUser() {return creationUser;}
public void setCreationUser(User user) {this.creationUser = user;}
public void setCreationUser() {this.creationUser = User.getCurrentUser();}
public User getUpdateUser() {return updateUser;}
public void setUpdateUser(User user) {this.updateUser = user;}
public void setUpdateUser() {this.updateUser = User.getCurrentUser();}
public String getCreationDate() {return creationDate;}
public void setCreationDate(String creationDate) {this.creationDate = creationDate;}
public String getUpdateDate() {return updateDate;}
public void setUpdateDate(String updateDate) {this.updateDate = updateDate;}
public T getBy(Long id) {
return JPA.em().find(entityClass, id);
}
public List<T> getList() {
return (List<T>) JPA.em().createQuery("FROM " + entityClass.getSimpleName()).getResultList();
}
public List<T> getByUser_id(Long id) {
List<T> entities = new ArrayList<T>();
TypedQuery<T> query = JPA.em().createQuery("SELECT r FROM " + entityClass.getSimpleName() + " r WHERE r.user.id != :user_id", entityClass).setParameter("user_id", id);
try {
entities = query.getResultList();
} catch (NoResultException e) {
entities = null;
}
return entities;
}
public List<T> getByParameterAndValue(String parameter, String value) {
List<T> entities = new ArrayList<T>();
String sqlString = "SELECT e FROM " + entityClass.getSimpleName() + " e WHERE e."+ parameter +" != :value";
TypedQuery<T> query = JPA.em().createQuery(sqlString, entityClass).setParameter("value", value);
try {
entities = query.getResultList();
} catch (NoResultException e1) {
entities = null;
} catch (Exception e) {
Index.toLog("error","Unsupported error in Generic model class in " + entityClass);
}
return entities;
}
@PrePersist
public void prePersist() {
Logger.warn(this.toString());
setCreationDate(Index.getDate(null));
preUpdate();
}
@PreUpdate
public void preUpdate() {
Logger.debug(this.toString());
setUpdateDate(Index.getDate(null));
}
public void toDataBase() {
System.out.println("------------------Trying to persist------------------------");
JPA.em().persist(this);
}
public void update() {
JPA.em().merge(this);
}
public void delete() {
JPA.em().remove(this);
}
/**
* A Generic toString method that can be used in any class.
* uses reflection to dynamically print java class field
* values one line at a time.
* requires the Apache Commons ToStringBuilder class.
*/
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.MULTI_LINE_STYLE);
}
// @Override
// public int hashCode() {
// return id.hashCode();
// }
}
確定。它的工作，我沒有這個錯誤了。現在是驗證問題：'play.api.Application $$ anon $ 1：執行異常[[ConstraintViolationException：對於組[java.value.groups]的持久化時間類[models.OrganizationalCellUnit]的驗證失敗。默認，] '我更新了新的堆棧跟蹤文章 – masterdany88 2014-12-04 12:58:01
您可以發佈OrganizationalCellUnit.java代碼嗎？ – Pracede 2014-12-04 13:18:24
這很複雜。它擴展了泛型。完成 – masterdany88 2014-12-04 13:30:21