延迟加载DataTable中

问题描述：

没有数据我有一个延迟加载的问题。没有lazyloading它工作正常，但延迟加载后，我得不到数据。我认为我的懒惰数据模型创建存在问题。延迟加载DataTable中

编辑：我发现是懒模型的加载方法不调用。

这里是我的数据表;

<p:dataTable id="companiesDataTable" 
         var="company" value="#{myController.lazyCompanyDataModel}" 
         rowKey="#{company.uuid}" 
         lazy="true" 
         sortMode="multiple" rows="5" paginator="true">

My Spring Controller;

private LazyDataModel<Company> lazyCompanyDataModel; 
private List<Company> companyList; 

@Override 
public void init() { 
    lazyCompanyDataModel = new LazyCompanyDataModel(companyList); 

    selectedCompany = new Company();  

}

我的数据模型;

public class LazyCompanyDataModel extends LazyDataModel<Company> { 


GenericService genericService; 

private List<Company> datasource; 
private int pageSize; 
private int rowIndex; 
private int rowCount; 

public LazyCompanyDataModel(List<Company> datasource) { 
    this.datasource = datasource;   
} 

@Override 
public List<Company> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String,String> filters) { 
    datasource = genericService.getByTemplate(new Company(), first, pageSize,new Order(null,Order.convertSortOrder(sortField))); 
    setRowCount((int) genericService.getCountByTemplate(new Company())); 
    return datasource; 
} 
@Override 
public boolean isRowAvailable() { 
    if(datasource == null) 
     return false; 
    int index = rowIndex % pageSize ; 
    return index >= 0 && index < datasource.size(); 
} 

@Override 
public Object getRowKey(Company company) { 
    return company.toString(); 
} 

@Override 
public Company getRowData() { 
    if(datasource == null) 
     return null; 
    int index = rowIndex % pageSize; 
    if(index > datasource.size()){ 
     return null; 
    } 
    return datasource.get(index); 
} 

@Override 
public Company getRowData(String rowKey) { 
    if(datasource == null) 
     return null; 
    for(Company company : datasource) { 
     if(company.toString().equals(rowKey)) 
     return company; 
    } 
    return null; 
} 

@Override 
public void setPageSize(int pageSize) { 
    this.pageSize = pageSize; 
} 

@Override 
public int getPageSize() { 
    return pageSize; 
} 

@Override 
public int getRowIndex() { 
    return this.rowIndex; 
} 

@Override 
public void setRowIndex(int rowIndex) { 
    this.rowIndex = rowIndex; 
} 

@Override 
public void setRowCount(int rowCount) { 
    this.rowCount = rowCount; 
} 

@Override 
public int getRowCount() { 
    return this.rowCount; 
} 

@Override 
public void setWrappedData(Object list) { 
    this.datasource = (List<Company>) list; 
} 

@Override 
public Object getWrappedData() { 
    return datasource; 
}

}

答

您必须覆盖LazyDataModel的getRowCount方法，使表，现在有多少行显示和多少页。不要在load方法中设置rowCount。

延迟加载DataTable中

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