Jsf 将对数据库的请求增加到Hibernate3
只是检查了所有的帖子和主题，并没有真正找到解决方案，但问题出在这里-一个名为TestResult.java的主要类有两个集合List和List，它们都设置为Lazy：Jsf 将对数据库的请求增加到Hibernate3,jsf,Jsf,只是检查了所有的帖子和主题，并没有真正找到解决方案，但问题出在这里-一个名为TestResult.java的主要类有两个集合List和List，它们都设置为Lazy： @ViewScoped @Entity @NamedQueries({ @NamedQuery(name="TestResult.getTestResults",query="FROM TestResult tr order by DateTaken desc"), @NamedQuery(name="TestResult.get
@ViewScoped
@Entity
@NamedQueries({
@NamedQuery(name="TestResult.getTestResults",query="FROM TestResult tr order by DateTaken desc"),
@NamedQuery(name="TestResult.getTestStatistic",query="Select testStatistic FROM TestResult tr where tr.recId = :recId"),
@NamedQuery(name="TestResult.getQuestions",query="Select questionsList FROM TestResult tr where tr.recId = :recId ")
})
@Table(name="TestResult")
public class TestResult implements Serializable {
private transient static final long serialVersionUID = 1L;
transient static final private String pass = "PASSED";
transient static final private String fail = "FAILED";
@Id @GeneratedValue(strategy=GenerationType.AUTO)
private int recId;
private String Username;
private String SavedTestName;
private Date DateTaken;
private int TestDuration;
private int TotalAsnwers;
private int MissedAsnwers;
private int CorrectAsnwers;
private int IncorrectAsnwers;
private int Score;
private String Status;
@OneToMany(fetch=FetchType.LAZY)
private List<UserQuestion> questionsList = new ArrayList<UserQuestion>();
@OneToMany(fetch=FetchType.LAZY)
@Cascade(CascadeType.ALL)
@Fetch(FetchMode.SELECT)
private List<TestStatistic> testStatistic = new ArrayList<TestStatistic>();
getters and setters are here ...
<p:layoutUnit position="center">
<h:form>
<p:dataTable id="datatable" value="#{tableView.listResults}" var="results" paginator="true" rows="20"
paginatorTemplate=
"{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowStyleClass="#{results.status == 'FAILED' ? 'failed-test' : 'passed-test'}" rowsPerPageTemplate="10,5">
<p:column>
<f:facet name="header">Action</f:facet>
ajax="false" update="panel,display"/>
<p:commandButton value="Review test" ajax="false" immediate="true"/>
</p:column>
<p:column>
<f:facet name="header">Username</f:facet>
<p:outputLabel value="#{results.username}"/>
</p:column>
<p:column>
<f:facet name="header">Test name</f:facet>
<p:outputLabel value="#{results.savedTestName}"/>
</p:column>
<p:column>
<f:facet name="header">Date taken</f:facet>
<p:outputLabel value="#{results.dateTaken}"/>
</p:column>
<p:column>
<f:facet name="header">Test name</f:facet>
<p:outputLabel value="#{results.testName}"/>
</p:column>
<p:column>
<f:facet name="header">Test duration</f:facet>
<p:outputLabel value="#{results.testDuration} min"/>
</p:column>
<p:column>
<f:facet name="header">Total / Correct / Incorrect / Missed</f:facet>
<p:outputLabel value="#{results.totalAsnwers} / #{results.correctAsnwers} /
#{results.incorrectAsnwers} / #{results.missedAsnwers}"/>
</p:column>
<p:column>
<f:facet name="header">Score</f:facet>
<p:outputLabel value="#{results.score} %"/>
</p:column>
<p:column>
<f:facet name="header">Status</f:facet>
<p:outputLabel value="#{results.status}"/>
</p:column>
</p:dataTable>
行动
ajax=“false”update=“面板，显示”/>
用户名
测试名称
拍摄日期
测试名称
测试持续时间
总计/正确/不正确/遗漏
分数
地位
@PostConstruct
public void loadListResults() {
sessionFactory = HibernateUtil.getSessionFactory();
session = sessionFactory.openSession();
session.beginTransaction();
Query query = session.getNamedQuery("TestResult.getTestResults");
listResults = query.list();
session.getTransaction().commit();
session.close();
}
<p:layoutUnit position="center">
<h:form>
<p:dataTable id="datatable" value="#{tableView.listResults}" var="results" paginator="true" rows="20"
paginatorTemplate=
"{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowStyleClass="#{results.status == 'FAILED' ? 'failed-test' : 'passed-test'}" rowsPerPageTemplate="10,5">
<p:column>
<f:facet name="header">Action</f:facet>
ajax="false" update="panel,display"/>
<p:commandButton value="Review test" ajax="false" immediate="true"/>
</p:column>
<p:column>
<f:facet name="header">Username</f:facet>
<p:outputLabel value="#{results.username}"/>
</p:column>
<p:column>
<f:facet name="header">Test name</f:facet>
<p:outputLabel value="#{results.savedTestName}"/>
</p:column>
<p:column>
<f:facet name="header">Date taken</f:facet>
<p:outputLabel value="#{results.dateTaken}"/>
</p:column>
<p:column>
<f:facet name="header">Test name</f:facet>
<p:outputLabel value="#{results.testName}"/>
</p:column>
<p:column>
<f:facet name="header">Test duration</f:facet>
<p:outputLabel value="#{results.testDuration} min"/>
</p:column>
<p:column>
<f:facet name="header">Total / Correct / Incorrect / Missed</f:facet>
<p:outputLabel value="#{results.totalAsnwers} / #{results.correctAsnwers} /
#{results.incorrectAsnwers} / #{results.missedAsnwers}"/>
</p:column>
<p:column>
<f:facet name="header">Score</f:facet>
<p:outputLabel value="#{results.score} %"/>
</p:column>
<p:column>
<f:facet name="header">Status</f:facet>
<p:outputLabel value="#{results.status}"/>
</p:column>
</p:dataTable>
@ManagedBean
@ViewScoped
public class Bean {
private List<TestResult> testResults;
@PostConstruct
public void init() {
//here you will load the data for your testResults variable
}
public List<TestResult> getTestResults() {
//clean getter
return this.testResults;
}
}
@ManagedBean
@ViewScoped
public class TableView {
private boolean showChart = false;
private boolean _isFiltered;
private List<TestResult> listResults = null;
@PostConstruct
public void init() {
sessionFactory = HibernateUtil.getSessionFactory();
session = sessionFactory.openSession();
session.beginTransaction();
Query query = session.getNamedQuery("TestResult.getTestResults");
listResults = query.list();
session.getTransaction().commit();
session.close();
}
public List<TestResult> getListResults() {
return this.listResults;
}
}