Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>You should try to use a configuration class and pass an instance of that to the factory. The configuration classes would build a hierarchy, where a special configuration class would exist for each result you expect from the factory. Each configuration class captures the specific properties of the factory result.</p> <p>For the example you've given I'd write a BasicLabelConfiguration and a CustomLabelConfiguration derived from it. The BasicLabelConfiguration captures the tracking reference, while the CustomLabelConfiguration captures the custom text.</p> <p>Finally the factory makes a decision based on the type of the passed configuration object.</p> <hr> <p>Here's an example of the code:</p> <pre><code>public class BasicLabelConfiguration { public BasicLabelConfiguration() { } public string TrackingReference { get; set; } } public class CustomLabelConfiguration : BasicLabelConfiguration { public CustomLabelConfiguration() { } public string CustomText { get; set; } } public class LabelFactory { public ILabel CreateLabel(BasicLabelConfiguration configuration) { // Possibly make decision from configuration CustomLabelConfiguration clc = configuration as CustomLabelConfiguration; if (clc != null) { return new CustomLabel(clc.TrackingReference, clc.CustomText); } else { return new BasicLabel(configuration.TrackingReference); } } } </code></pre> <p>Finally you'd use the factory like this:</p> <pre><code>// Create basic label ILabel label = factory.CreateLabel(new BasicLabelConfiguration { TrackingReference = "the reference" }); </code></pre> <p>or</p> <pre><code>// Create basic label ILabel label = factory.CreateLabel(new CustomLabelConfiguration { TrackingReference = "the reference", CustomText = "The custom text" }); </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POFactory class knows too much
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USgrover
    1. USgrover
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTDownMod
    1. COWow! this is way complex. Like Adam Robinson, I don't see the benefit of using factory at all if you expose all the complexity of the underlying implementation's API with at least as complex (if not more) "configuration" API.
      singulars
      1. PO
      1. USGuss
    2. COThe factory is still responsible for building the actual object. The configuration is basically a Memento to create the real object. But I agree this is complex. Another option would be to use the prototype pattern, but the auther hasn't described his environment so I don't know if its applicable.
      singulars
      1. PO
      1. USgrover
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload