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我正在尝试使用 jpa 验证来验证新的 bean 对象。

我收到此错误：

2012-09-24 11:19:55,584 WARN  [AbstractModel:32] The object is not persisted yet, this operation requires the object to already be persisted.
java.lang.Exception
        at org.oscarehr.common.model.AbstractModel.hashCode(AbstractModel.java:32)
        at org.hibernate.validator.engine.ConstraintViolationImpl.hashCode(ConstraintViolationImpl.java:127)
        at java.util.HashMap.put(HashMap.java:389)
        at java.util.HashSet.add(HashSet.java:217)
        at java.util.AbstractCollection.addAll(AbstractCollection.java:322)
        at java.util.HashSet.<init>(HashSet.java:117)
        at org.hibernate.validator.engine.ValidatorImpl.validate(ValidatorImpl.java:120)
        at org.apache.jsp.billing.CA.ON.reports.billingONNewReport_jsp.saveSubmittedBills(billingONNewReport_jsp.java:383)
        at org.apache.jsp.billing.CA.ON.reports.billingONNewReport_jsp._jspService(billingONNewReport_jsp.java:796)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
        at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:709)
        at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:680)
        at org.apache.jsp.billing.CA.ON.billingONReport_jsp._jspService(billingONReport_jsp.java:109)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
....

我正在使用：

hibernate-entitymanager 3.4.0.GA
hibernate-validator 4.1.0.Final
validation-api 1.0.0.GA

我这样调用我的验证代码：

Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
                Set<ConstraintViolation<BillingClaimHeader1>>  constraintViolations = validator.validate(newBill);
                MiscUtils.getLogger().info("num violations: " + constraintViolations.size());

newBillclass 的新实例在哪里BillingClaimHeader1。

这是 的类定义BillingClaimHeader1：

public class BillingClaimHeader1 extends AbstractModel<Integer> implements Serializable

我对整个 JPA/验证这件事还是很陌生，但我没有意识到在验证它之前我必须坚持一个对象......似乎有点违反直觉......

我很感激任何帮助！

干杯

贾勒特

4

2 回答 2

1

注意

  1. 此消息来自org.oscarehr.common.model.AbstractModel，而不是 JPA
  2. 这是警告，不是错误

实际上，在您的情况下，您可以放心地忽略此消息。

org.oscarehr.common.model.AbstractModel uses entity identifier to implement equals() and hashCode(). This approach has one disadvantage when used with generated identifiers - it breaks the contract of equals() and hashCode() when you save an object, i.e. hashCode() of a transient object differs from hashCode() of the same object after you saved it.

To inform you about possible problems authors of org.oscarehr.common.model.AbstractModel decided to emit a warning when you call hashCode() on a transient object. However, in your case you can safely ignore this warning, because hashCode() is called internally by validation routines that operate on transient objects only (as far as I understand).

See also:

于 2012-09-24T15:59:16.960 回答
0

您的实体与PersistenceContext. 你必须manage state为那个例子做。

于 2012-09-24T15:46:52.933 回答