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我在尝试使用 primefaces subtale 组件对数据进行分组时遇到问题。我的列已分组，但第一个结果仍然是同一行，如下面的屏幕截图所示：

在此处输入图像描述

Normaly 我应该有其他除了 AIR。但这是我得到的结果。有人可以帮助我了解发生了什么。我遵循 PrimeFaces 展示案例并开发类来生成这个子表：

这是托管 bean：

package tg.moov.imereport.mbean;

import java.util.ArrayList;
import java.util.List;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.inject.Named;
import tg.moov.imereport.service.DownStream;
import tg.moov.imereport.service.DownStreamTotal;

@Named
@Stateless
public class GroupedDataMBean {

    @EJB private DownStreamMBean ds;
    @EJB private DownStreamTotalMBean dst;
    private Period period = new Period();
    private List<GroupedDownStream> downStreams;

    /**
     * @return the period
     */
    public Period getPeriod() {
        return period;
    }

    /**
     * @param period the period to set
     */
    public void setPeriod(Period period) {
        this.period = period;
    }        

    public GroupedDataMBean() {

    }

    /**
     * 
     */
    public void populateDownStreams() {
        downStreams = new ArrayList<GroupedDownStream>();
        for (DownStream d : ds.getDownStreamsService()) {
            GroupedDownStream gds = new GroupedDownStream();
            gds.setDownStream(d.getIDDownStream());
            dst.setPeriod(period);
            for(DownStreamTotal dt : dst.displayGroupedDataByDownStream(d)) {
                gds.getDownStreamsDetails().add(dt);
            }
            downStreams.add(gds);
        }
    }

    /**
     * 
     * @return a List of GroupedDownStream
     */
    public List<GroupedDownStream> getGroupedDownStreams() {
        return downStreams;
    }

}

这是大师班：

package tg.moov.imereport.mbean;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import tg.moov.imereport.service.DownStreamTotal;


public class GroupedDownStream implements Serializable {
    private String downStream;
    private List<DownStreamTotal> downStreamsDetails;

    /**
     * @return the downStream
     */
    public String getDownStream() {
        return downStream;
    }

    /**
     * @param downStream the downStream to set
     */
    public void setDownStream(String downStream) {
        this.downStream = downStream;
    }        

    /**
     * @return the downStreamsDetails
     */
    public List<DownStreamTotal> getDownStreamsDetails() {
        return downStreamsDetails;
    }

    /**
     * @param downStreamsDetails the downStreamsDetails to set
     */
    public void setDownStreamsDetails(List<DownStreamTotal> downStreamsDetails) {
        this.downStreamsDetails = downStreamsDetails;
    }

    public GroupedDownStream() {
        downStreamsDetails = new ArrayList<DownStreamTotal>();
    }
}

要显示的详细信息：

package tg.moov.imereport.dao;

import java.io.Serializable;
import java.util.Date;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import javax.xml.bind.annotation.XmlRootElement;

@Entity
@Table(name = "DownStreamTotal")
@XmlRootElement
@NamedQueries({
    @NamedQuery(name = "DownStreamTotal.findAll", query = "SELECT d FROM DownStreamTotal d"),
    @NamedQuery(name = "DownStreamTotal.findByDownStream", query = "SELECT d FROM DownStreamTotal d WHERE d.downStream = :downStream"),
    @NamedQuery(name = "DownStreamTotal.findByNode", query = "SELECT d FROM DownStreamTotal d WHERE d.node = :node"),
    @NamedQuery(name = "DownStreamTotal.findByTotalFiles", query = "SELECT d FROM DownStreamTotal d WHERE d.totalFiles = :totalFiles"),
    @NamedQuery(name = "DownStreamTotal.findByMinDate", query = "SELECT d FROM DownStreamTotal d WHERE d.minDate = :minDate"),
    @NamedQuery(name = "DownStreamTotal.findByMaxDate", query = "SELECT d FROM DownStreamTotal d WHERE d.maxDate = :maxDate")})
public class DownStreamTotal implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 10)
    @Column(name = "DownStream")
    private String downStream;
    @Size(max = 15)
    @Column(name = "Node")
    private String node;
    @Column(name = "TotalFiles")
    private Integer totalFiles;
    @Column(name = "MinDate")
    @Temporal(TemporalType.DATE)
    private Date minDate;
    @Column(name = "MaxDate")
    @Temporal(TemporalType.DATE)
    private Date maxDate;

    public DownStreamTotal() {
    }

    public DownStreamTotal(String downStream) {
        this.downStream = downStream;
    }

    public String getDownStream() {
        return downStream;
    }

    public void setDownStream(String downStream) {
        this.downStream = downStream;
    }

    public String getNode() {
        return node;
    }

    public void setNode(String node) {
        this.node = node;
    }

    public Integer getTotalFiles() {
        return totalFiles;
    }

    public void setTotalFiles(Integer totalFiles) {
        this.totalFiles = totalFiles;
    }

    public Date getMinDate() {
        return minDate;
    }

    public void setMinDate(Date minDate) {
        this.minDate = minDate;
    }

    public Date getMaxDate() {
        return maxDate;
    }

    public void setMaxDate(Date maxDate) {
        this.maxDate = maxDate;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (downStream != null ? downStream.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof DownStreamTotal)) {
            return false;
        }
        DownStreamTotal other = (DownStreamTotal) object;
        if ((this.downStream == null && other.downStream != null) || (this.downStream != null && !this.downStream.equals(other.downStream))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "tg.moov.imereport.dao.DownStreamTotal[ downStream=" + downStream + " ]";
    }

}

primefaces代码：

<p:commandButton action="#{groupedDataMBean.populateDownStreams}" value="search" ajax="false" update="downStreamTable" />
                        <p:dataTable id="downStreamTable" var="dwnStr" value="#{groupedDataMBean.groupedDownStreams}">

                            <f:facet name="header">
                                ImE Distribution Report
                            </f:facet>

                            <p:columnGroup type="header">  
                                <p:row>  
                                    <p:column headerText="DownStream" />
                                    <p:column headerText="#Files" />  
                                    <p:column headerText="MinDate" />  
                                    <p:column headerText="MaxDate" />
                                </p:row>                                     
                            </p:columnGroup>

                            <p:subTable var="details" value="#{dwnStr.downStreamsDetails}">
                                <f:facet name="header">
                                    #{dwnStr.downStream} 
                                </f:facet>

                                <p:column>
                                    #{details.node}
                                </p:column>

                                <p:column>
                                    #{details.totalFiles}
                                </p:column>

                                <p:column>
                                    #{details.minDate}
                                </p:column>

                                <p:column>
                                    #{details.maxDate}
                                </p:column>   
                                <p:columnGroup type="footer">                                      
                                </p:columnGroup>  
                            </p:subTable>
                        </p:dataTable>

先感谢您！

4

1 回答 1

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我发现，这里有一些关于它的东西。这是一个 Primefaces 错误。他们建议改用嵌套数据表。

于 2013-04-26T09:52:04.677 回答