I would like to know if there was any way I could create an array of Card objects using Nativebase, and call upon these objects to change their properties like array[1].Text = "example", although I don't know how I would change the body of an XML tag through a function like the one described above.
Related
I am not getting that how to differentiate same element name for eg City,Area in two different trees. So help me for this in parsing the same element name in iphone.
<Contacts id="1">
<Fname>Siddharth</Lname>
<Lname>Chopra</Lname>
<Currentaddress>
<Area>Aundh</Area>
<City>Pune</City>
<Phone>8796xxxx</Phone>
</Currentaddress>
<Permanentaddress>
<Area>Bhatar</Area>
<City>Surat</City>
<Phone>989825xxxx</Phone>
</Permanentaddress>
</Contacts>
In your class create an mutable array, that you'll use as a stack.
if a new element starts, create a object representing it (a custom (managed) object, or a dictionary) and add it to the array. In didFoundCharacter: alter the object, that is last on the array. If didEndElement: is called, save it either to core data, a file, sql or in memory to another array. and remove it from the array.
If the elements <Area>,<City> or <Phone>are handled, you'll know, that the object on the second last position is the address, they belong to. either <Currentaddress> or <Permanetaddress>.
You have to set a flag in didstartElement, the value of the flag will let you know, which parent tree is under parsing process.
I am trying to build a createEntity OEntity for an object that has multiple child collections within it.
I have looked over many of the example projects, but they all seem to assume that you have a known number of child objects in a collection so that you can use .inLine(“ObjectName”, ObjectOEntity1, ObjecteOEntity2…)
I have tried looking at the documentation and have not identified anything that leads me to think I can create a collection of OEntity objects that can then be added to my parent object with the inline.
The closest I found was the example listed on:
http://code.google.com/p/odata4j/source/browse/odata4j-fit/src/test/java/org/odata4j/producer/jpa/northwind/test/CreateTest.java?name=0.6
Has anyone else run into this problem?
If so how did you get around it?
You can pass in an array of OEntity objects. The core4j library that is used by odata4j contains some helper methods that can - for example - be used to get an array from an Iterable:
OEntity[] entitiesArray = Enumerable.create(entitiesIterable)
.toArray(OEntity.class);
But as there are also two variants of the properties method...
OCreateRequest<T> properties(OProperty<?>... props);
OCreateRequest<T> properties(Iterable<OProperty<?>> props);
... it might make sense to add an inline method that directly takes an Iterable<OEntity>.
I am unsure how to describe what I am looking for, so hopefully the situation will make it somewhat clear.
I have an object with a number of properties (let's say object.one, object.two, object.three). There are about 30 of these properties and they all hold a string ("Pass" or "Fail").
Right now the existing code checks whether the property has value "Pass" or "Fail" and then runs some code that prints stuff out. That is, the same snippet of code is duplicated 30 times, one for each of these properties.
The code looks something like this
If (object.one = ... )
...
End if
If (object.two = ... )
...
End if
If (object.three = ... )
...
End if
I want to use a loop to clean this mess up (each block is huge), but am not sure how to do it. I was thinking perhaps there was a way such that I might be able to construct a string like "object.one" and run some function that will tell the compiler that this is actually an object's property?
That way I could create an array containing the object's name like my array = {"object.one", "object.two", "object.three"} and then do something like, in pseudocode
For each string in my array
If (some_function(string) = ...)
...
End If
Essentially, it would take those massive blocks of duplicated code and reduce it to just one block. Is there such a some_function that I am looking for?
This is in VB.net.
I'm not sure i've understand but you can use reflection and get object properties runtime ?
With reflection you can access public object properties, use PropertyFiled.GetValue() to get one, two, etc. and build an array (i suppose that one, two, etc are object Properties, true?)
Here you can find more information: http://msdn.microsoft.com/en-us/library/system.reflection.aspx
Sorry for my bad english, i'm italian.
You seem to be describing serialization, which is the act of converting object state to a format that can be stored/transmitted and deserialization, which is the opposite.
The .NET framework has several different serializers that can work with text - either XML or JSON - the DataContractSerializer for XML and the DataContractJsonSerizlizer for JSON amongst them.
I am using a TreeView with a ListStore as model. When the user clicks on a row I want to take some action but not using the values in the cells, but using the data I created the row from...
Currently I have the TreeView, the TreeModel (ListStore) and my own data (which I ironically call model)..
So the Questions are:
Is it "right" to have a model - an object representation of the data I want to display and fill a ListStore with that data to display in a TreeView, or would it be better to implement an own version of TreeModel (wrapping my data-model) to display the data?
And also:
If someone double-clicks in a row I can get the RowActivated event (using C#/Gtk#) which provides a Path to the activated row. With that I can get a TreeIter and using that I can get the value of a cell. But what is the best practice to find the data object from which the row was constructed in the first place?\
(Somehow this question got me to the first one - by thinking would getting the data object more easy if I tried to implement my own TreeModel...)
It's quite awkward/difficult to implement TreeModel, so most people simply synch the data from their "real" model into a TreeStore or ListStore.
The columns in the store do not have to match the columns in the view in any way. For example, you can have a column that contains your real managed data objects.
When you add a cellrenderer to a TreeView (visual) column, you can add mappings between its properties and the columns of the store. For example, you could map one store column to the font of a text cellrenderer, and another store column to the text property of the same cellrenderer. Each time the cellrenderer is used to render a particular cell, the mappings will be used to retrieve the values from the store and apply them to the properties of the renderer before it renders.
Here's an example of a mapping:
treeView.AppendColumn ("Title", renderer, "text", 0, "editable", 4);
This maps store column 0 to the renderer's text GTK property and maps store column 4 to the editable property. For GTK property names you can check the GTK docs. Note that the example above uses a convenience method that adds a column, adds a renderer to it and add an arbitrary number of mapping via params. To add mappings directly to a column, for example a column with multiple renderers, pack the renderers into the column then use TreeViewColumn.AddAttribute or TreeViewColumn.SetAttributes.
You can also set up a custom data function that will be used instead of mappings. This allows you to set the properties of the renderer directly, given a TreeIter and the store - so, if all the data you want to display is trivially derived from your real data objects, you could even have your store only contain a single column of these objects, and use data funcs for all the view columns.
Here's an example of a data func that does exactly what the mapping example above does:
treeColumn.SetCellDataFunc (renderer, delegate (TreeViewColumn col,
CellRenderer cell, TreeModel model, TreeIter iter)
{
var textCell = (CellRendererText) cell;
textCell.Text = (string) model.GetValue (iter, 0);
textCell.Editable = (bool) model.GetValue (iter, 4);
});
Obviously data functions are much more powerful because they enable you not only to use properties of more complex GTK objects, but also to implement more complex display logic - for example, lazily processing derived values only when the cell is actually rendered.
From the dojo documents on dijit.registry, I see the forEach method accepts a last parameter thisObject. But it doesn't way what that object is. Is it a dijit widget or a dojo object?
I want to destroy all widgets inside an element (that will be replaced by AJAX) so they can be parsed again without conflicting id's.
dijit.registry.forEach(function(w) {
w.destroyRecursive();
}, dojo.byId("ajaxElement"));
But this destroys ALL widgets on the page...
The thisObject is the scope object to invoke the function passed in as the first parameter of forEach.
A couple of solutions you can use in this case:
1) Use dijit.findWidgets to find all the dijits in a DOM node and destroy them one by one.
dijit.findWidgets returns array of widgets which takes domnode as a parameter
2) dojo.parser.parse returns an array of all the dijits that it creates, store that array and destroy the dijits before you call dijit.parser.parse again.
3) Use dijit.registry.filter to filter out the dijits you want to keep.