Question

我为工作项创建了一个Java提供的属性，该属性通过查看来自同一/当前工作项的两个其他属性（枚举）来提供值集，这些属性一起形成java提供的属性将创建的目录路径使用嵌套在该目录中的文件名设置值。如果首次创建工作项，则效果很好但是在修改工作项时，它无法填充集，因此可以选择新值。

我发现它到达这个陈述：

IAttribute currentAttribute =（IAttribute）句柄;

生成异常。它无法转换为IAttribute句柄，因为来自workItem.getCustomAttributes（）的返回项在新Wotk项和修改后的工作项之间是不同的。

异常消息是：

com.ibm.team.workitem.common.internal.model.impl.AttributeHandleImpl与com.ibm.team.workitem.common.model.IAttribute不兼容

我不知道为什么如何获取com.ibm.team.workitem.common.internal.model.impl.AttributeHandleImpl用于修改工作项和... ... AttributeHandle用于首次创建作品项目

我不知道如何解决这个问题或将其投射到我所需要的IAttribute上。

public class SpecificArtifactType implements IValueSetProvider<String> {

private List<String> list;

public SpecificArtifactType() {

}

@Override
public List<String> getValueSet(IAttribute attribute, IWorkItem workItem,
        IWorkItemCommon workItemCommon, IConfiguration configuration,
        IProgressMonitor monitor) throws TeamRepositoryException {

    String idValue= "";
    String deliverableArtifactTypeValue= "";



    List<IAttributeHandle> customAttributeHandles= workItem.getCustomAttributes();

    /* 
     * THE DELIVERABLE ARTIFACT AND ID VALUES ARE BOTH USED TO BUILD 
     * THE DIRECTORY PATH WHICH THIS ATTRIBUTE WILL USE TO POPULATE
     * ITS VALUE SET WITH THE ARTIFACTS LOCATED AT THAT LOCATION.
     */

    for (IAttributeHandle handle: customAttributeHandles)
    {   
        IAttribute currentAttribute= (IAttribute) handle;

        if (currentAttribute.getDisplayName()
                .equals(ICustomAttributeDefinitions.ID))
        {
            idValue= getValue(currentAttribute, monitor, workItemCommon, workItem);
        }
        else if (currentAttribute.getDisplayName()
                .equals(ICustomAttributeDefinitions.DELIVERABLE_ARTIFACT_TYPE))
        {
            deliverableArtifactTypeValue= getValue(currentAttribute, monitor, workItemCommon, workItem);
        }   
    }

    // BUILD THE DIRECTORY PATH

    String directory = ICustomAttributeDefinitions.STREAM_ROOT_DIRECTORY
            +deliverableArtifactTypeValue +"\\"+ idValue;

    File folderPath = new File(directory);

    /*
     *  NEED A VALID PATH TO CONTINUE AND ALSO PREVENT TRYING TO 
     *  LIST CHILD ITEMS IF IT'S A FILE.
     */

    if (folderPath.exists() && folderPath.isDirectory())
    {   
        if (folderPath.list().length == 0)
        {
            directoryEmpty();
            return list;
        }

        list= new ArrayList<String>();

        for (String name: folderPath.list())
            list.add(name);
    }
    else invalidDirectoryPath();

    return list;

}
    /*
     *  CONVERT VALUE FROM MODEL IDENTIFIER (EG ID.literal.l01) TO ACTUAL VALUE
     */

private String getValue(IAttribute attribute, 
                            IProgressMonitor monitor, 
                            IWorkItemCommon workItemCommon,
                            IWorkItem workItem) throws TeamRepositoryException
{
    IEnumeration<? extends ILiteral> enumeration= workItemCommon
            .resolveEnumeration(attribute, monitor);

    String value= "";

    List<? extends ILiteral> literals= enumeration.getEnumerationLiterals();

    for (Iterator<? extends ILiteral> iterator= literals.iterator(); iterator.hasNext(); ) 
    {
        ILiteral iLiteral= (ILiteral) iterator.next();

        if (iLiteral.getIdentifier2().equals(workItem.getValue(attribute))) 
        {
            value= iLiteral.getName().toString();
            break;
        }
    }
    return value;
}


private void directoryEmpty(){
    list= new ArrayList<String>(1);
    list.add(ICustomAttributeDefinitions.DIRECTORY_EMPTY);

}

private void invalidDirectoryPath()
{
    list= new ArrayList<String>(1);
    list.add(ICustomAttributeDefinitions.INVALID_DIRECTORY_PATH);
}

}

Answer 1

这个问题可能有三种解决方案：

1）当你创建workItem并保存workItem实例然后它的状态发生了变化，所以现在当你调用workItem.getCustomAttributes（）时，它不会返回所需的结果所以你需要添加这个之前的行：

IWorkItem workItem = (IWorkItem) getWorkItemServer()
        .getAuditableCommon()
        .resolveAuditable(savedWorkItem, IWorkItem.FULL_PROFILE, null);

您可以轻松地针对此服务器代码获取客户端代码，这将获得保存的workItem状态

2）您可以在将instanceof转换为IAttribute

之前选中IAttribute来防止发生此异常

3）按照标识符获取IAttribute，然后通过以下方式获取WorkItemUIWorkingCopy uiWorkingCopy = (WorkItemUIWorkingCopy) workingCopy.getAdapter(IWorkItemUIWorkingCopy.class); IAttribute attribute = uiWorkingCopy.getResolvedWorkItem().findAttribute(fAttribute.getIdentifier());：

SELECT  *
FROM [Schema].[SomeFullTextIndexedView] t 
INNER JOIN CONTAINSTABLE([Schema].[SomeFullTextIndexedView], ColumnToSearch, '"*bla*" OR "*di*" OR "*bladi*"') c
    ON t.ID = c.[KEY]
ORDER BY [RANK] DESC

希望它能帮到你

IBM RTC Java提供的属性。在修改工作项时无法强制转换为IAttribute

1 个答案: