Question

如何使用Jscript检索由依赖类型的连接器实现的所有信息流的集合？

Answer 1

第一种选择是使用API。

循环连接器并检查EA.Connector.ConveyedItems

但除了一个微不足道的模型之外，任何事情都会非常缓慢。

所以唯一合理的方法是使用EA.Repository.SQLQuery(string SQL)获取connectorID的列表，然后使用EA.Repository.GetConnectorByID(int ID)来获取连接器对象。

您需要的SQL查询具有

的性质

select * 
from ((((t_connector c
inner join t_xref x on (x.Client = c.ea_guid
                    and x.Name = 'MOFProps'
                    and x.Type = 'connector property'
                    and x.Behavior = 'abstraction'))
inner join t_connector cf on x.Description like '%' + cf.ea_guid + '%')
inner join t_xref xf on (xf.Client = cf.ea_guid
                    and xf.Name = 'MOFProps'
                    and xf.Type = 'connector property'
                    and xf.Behavior = 'conveyed'))
inner join t_object o on o.ea_guid like xf.Description)
where c.Connector_Type = 'Dependency'

如果您正在处理.eap（MS-Access）文件，请将%替换为*。

我在C＃中也有一个实现。在类ConnectorWrapper上有一个操作来从依赖项中获取信息流。

/// <summary>
/// convenience method to return the information flows that realize this Relationship
/// </summary>
/// <returns>the information flows that realize this Relationship</returns>
public virtual HashSet<UML.InfomationFlows.InformationFlow> getInformationFlows()
{
    HashSet<UML.InfomationFlows.InformationFlow> informationFlows = new HashSet<UML.InfomationFlows.InformationFlow>();
    string sqlGetInformationFlowIDs = @"select x.description
        from (t_connector c
        inner join t_xref x on (x.client = c.ea_guid and x.Name = 'MOFProps'))
        where c.ea_guid = '" + this.guid + "'";
    var queryResult = this.model.SQLQuery(sqlGetInformationFlowIDs);
    var descriptionNode = queryResult.SelectSingleNode(this.model.formatXPath("//description"));
    if (descriptionNode != null)
    {
        foreach (string ifGUID in descriptionNode.InnerText.Split(','))
        {
            var informationFlow = this.model.getRelationByGUID(ifGUID) as UML.InfomationFlows.InformationFlow;
            if (informationFlow != null )
            {
                informationFlows.Add(informationFlow);
            }
        }
    }
    return informationFlows;
}

获得InformationFlow后，此代码会获得传送的内容

public HashSet<UML.Classes.Kernel.Classifier> conveyed 
{
    get 
    {
        if (_conveyed == null)
        {
            string getXrefDescription = @"select x.Description from t_xref x 
                                        where x.Name = 'MOFProps'
                                        and x.Behavior = 'conveyed'
                                        and x.client = '" + this.guid + "'";
            //xrefdescription contains the GUID's of the conveyed elements comma separated
            var xrefDescription = this.model.SQLQuery(getXrefDescription).SelectSingleNode(this.model.formatXPath("//Description"));
            if (xrefDescription != null)
            {
                foreach (string conveyedGUID in xrefDescription.InnerText.Split(','))
                {
                    var conveyedElement = this.model.getElementWrapperByGUID(conveyedGUID) as UML.Classes.Kernel.Classifier;
                    if (conveyedElement != null)
                    {
                        //initialize if needed
                        if (_conveyed == null)
                        {
                            _conveyed = new HashSet<UML.Classes.Kernel.Classifier>();
                        }
                        //add the element
                        _conveyed.Add(conveyedElement);
                    }
                }
            }
        }
        //nothing found, return empty list.
        if (_conveyed == null)
        {
            _conveyed = new HashSet<UML.Classes.Kernel.Classifier>();
        }
        return _conveyed;
    }
}

实现了Sparx EA Jscript信息流

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