gbianchi's questions

I have an old JSP project for which I use eclipse as the ide.

Once everything is configured and I test that it works, I want it to start in another path other than the default path that Eclipse launches.

when I launch the project, it runs in http://localhost:8080/miapp/. But I want that when executing, the same is executed inhttp://localhost:8080/miapp/menu/mijsp.jsp

As a bonus, I want to pass parameters to it so that it looks like this:http://localhost:8080/miapp/menu/mijsp.jsp?param1=aaa?param2=bbb

When I run it, and type the path by hand it goes to that page, so the project works.

The folder structure of my project is like this:

I suppose that I have to modify something in the Deployment Descriptor, but for a change I can't find anything that tells me what to modify or how...

Extra bonus: if someone knows how to modify the route so that where it says myapp they can change it, they get an extra coffee...

You have the following interface:

export interface XX{
    Campo1?: string;
    Campo2?: string;
    Campo3?: string;
    [key: string]: string;
}

The key is to be able to access an element of the same in the form

const p: XX = {};
p['Campo1'];

But the following TS error occurs

Property 'Field1' of type 'string | undefined' is not assignable to string index type 'string' (ts 2411)

Everything goes as if nothing, so I don't know if it's a TS error due to some bug, or I'm simply defining something wrong. How to solve that problem?

The error occurs in the interface definition.

If we change some of the strings to any, the error for that field goes away... but we don't want to use any.

export interface XX{
    Campo1?: any; <--- desaparece el error para este campo
    Campo2?: string;
    Campo3?: string;
    [key: string]: string;
}

I have configured ts in the following way (extract)

"compilerOptions": {
    "target": "esnext",
    "module": "esnext",
    "strict": true,
    "jsx": "preserve",
    "importHelpers": true,
    "moduleResolution": "node",
    "experimentalDecorators": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "baseUrl": ".",

You have the following interface

export interface Contribuyente {
    Campo1: number;
    Campo2: string;
    Campo3: number;
    Campo4: number;
}

And then the following interface is generated

export interface AppState {
    Contribuyentes: Contribuyente[];
}

And with this a "class" is generated

export const state: AppState = {
    Columnas: [],
    Contribuyentes: [
        { Campo1: 1, Campo2: 'N', Campo3: 1, Campo4: 75, },
        ......
    ]
}

And now what I want to do is, in a method, obtain the data contained, for example, in Field1, but only receiving the name of Field1 as a parameter.

The trivial solution is given the name of the field, make a big switch and return the corresponding field:

public obtenercampo(campo: string): string {
    switch (campo) {
        case 'Campo1':
            valor = clase.Campo1;
            break;
        ....
    }
    .....
}

But if the Contributor interface had 30 fields, this model is not pretty.

Is there any other way to access those properties, knowing the name of the field I want to get?

To simplify the use of axios in my application, I used a prototype to declare it globally.

const instance = axios.create({
  baseURL: process.env.VUE_APP_BASE_URI,
  withCredentials: true
});

Vue.prototype.$http = instance;

So far there is no problem, the problem arises when using it in any component

import vue from 'vue'; <- agregado solo para ver si solucionaba el problema
import { Component, Vue, Watch} from 'vue-property-decorator';
.....
this.$http.get('url')
.then(Response => )

This code rightly indicates for typescript:

"Property '$http' does not exist on type 'YourComponent'."

So, how do you get typescript to recognize that and not go around protesting that you don't know what it is?

I have a simple page made in vue, where in the data there is an object of the following form:

data: function () {
  return {
    titulo: '',
    elementos: Object
  }
}

Now, elements is defined as an object, however, when I make a change to one of its properties:

elementos.propiedad1 = 4;

Nothing happens, my eyesight doesn't react to changes.

I do not understand why this happens, nor why it is not reactive, if the element is defined in the data. That could be happening?

I have a class

public class TestClass
{
    public int? a { get; set; }
    public int? b { get; set; }

    public TestClass(int _a, int _b)
    {
        a = _a;
        b = _b;
    }
}

And for this class, I generate a list with elements of it.

List<TestClass> lista = new List<TestClass>
{
    new TestClass(1,2),
    new TestClass(2,3),
    new TestClass(1,3)
};

Now, I would like to generate a method that, depending on the options that the user selects, allows me to return either all the elements of the list (if I do not select anything), or those that comply with what the user selected.

If I have that class with only those two properties, I could do something like this:

List<TestClass> resul;
if (seleccionA == null && seleccionB == null)
{
    resul = lista;
}
if (seleccionA == null && seleccionB != null)
{
    resul = lista.Where(v => seleccionB == v.b).ToList();
}
if (seleccionA != null && seleccionB == null)
{
    resul = lista.Where(v => seleccionA == v.a).ToList();
}
if (seleccionA != null && seleccionB != null)
{
    resul = lista.Where(v => seleccionA == v.a && seleccionB == v.b).ToList();
}

But if there are more than two properties, the if is getting worse. How can I solve this in a more efficient way of writing in the code?

I have a property computed as follows:

private get ChangeGroup(): IResults[] {
    Axios.get(process.env.VUE_APP_BASE_URI + 'results?GroupNumber='
    + this.selected,
    {withCredentials: true})
    .then(data => {
        this.items = data.data;
        let i = 1;
        this.items.forEach(
            (e: IResults) => {
                e.position = i;
                i++;
            }
        );
        return this.items; <----- 2
    })
    .catch(error => {return []}); <--- 1
}

It's written that way, because the application uses typescript, so the function needs to return something.

On the line marked 1, it returns empty.
On 2, it returns full.
But of course, the problem is that this async call returns automatically. So how do you make this wait until the call actually comes back, and has something to return?

return <>
        <NavItem>
            <NavLink href={`/app/logout?returnUrl=${returnUrl}`}>Log out</NavLink>
        </NavItem>
</>

I have the above code snippet inside a tsx file, in a folder in visual studio. It recognizes this class of files (it put the icon on them) and I even have intellisense for the classes and methods.

However, it doesn't recognize the fragment as such, and throws an error in the IDE. However the code compiles and runs without problems when doing npm start.

So it's an IDE problem.

Making

return <React.Fragment>
        <NavItem>
            <NavLink href={`/app/logout?returnUrl=${returnUrl}`}>Log out</NavLink>
        </NavItem>
</React.Fragment>

It does not throw an error in the IDE. The question is, how do I tell my IDE that this code is OK? (or is it a VS bug?)

Working with a free project on GitHub, I forked it, made some changes and asked for a PR, which was accepted.

I upgraded my fork upstream and kept making other changes, then did another PR again.

At that point, I realized that my new PR included all the commits I had already done, and even all the files.

I was supposed to be upstream by now, but either I missed something, or my fork never found out about the accepted PR.

To avoid that, I made a branch with only the modified files. However, the PR for that branch still includes all the commits I've made.

Not so with the files, only the modified one goes.

So what is the correct way to work when one forks a project?

Should I have run any more commands besides upstream? Or do I just have to empty my fork after each PR and go back to work as if it were from scratch?

I have a model, of the form:

public class A
{
   public ObservableCollection B col1;
}

Public Class B
{
   public int BA;
   public int BB;
   public ObservableCollection C;
}

public Class C
{
   public int CA;
   public int CB;
}

The first DataGrid is filled with the content of A, which is nothing more than a list of B elements.

<DataGrid x:Name="GrillaA" AutoGenerateColumns="False" IsReadOnly="True" SelectionMode="Single" ItemsSource="{Binding Mode=OneWay}">
   <DataGrid.Columns>
       <DataGridTextColumn Binding="{Binding BA}"/>
       <DataGridTextColumn Binding="{Binding BB}"/>
   </DataGrid.Columns>
 </DataGrid>

And then I have another grid, which is filled with the content of the list that contains B (the list of objects C)

<DataGrid x:Name="GrillaB" AutoGenerateColumns="False" IsReadOnly="True" SelectionMode="Single" ItemsSource="{Binding SelectedItem.C, ElementName=GrillaA}">
   <DataGrid.Columns>
       <DataGridTextColumn Binding="{Binding CA}"/>
       <DataGridTextColumn Binding="{Binding CB}"/>
   </DataGrid.Columns>
</DataGrid>

All this is going perfectly... except that under each grid I have some text boxes that are filled with the content of the selected row in the grid... In the case of the first grid, I have no problem, they fill perfectly...

The question is: when I select an item in GridA, how do I select the first element of GridB, in an MVVM model, in such a way that the fields below that grid are filled?

EDITION

I leave an example in git:

https://github.com/topcatarg/MVVMGridsTest

and no, beyond the first screen, on the second screen when selecting an item from the first grid, the second grid does not select the first item (because the selection property is executed twice)

The following class (from an xml) has several attributes and contains text.

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.6.1055.0")]
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "xxx")]
public partial class consultaSelect : EntityBase<consultaSelect>
{
   private string scriptField;

    [System.Xml.Serialization.XmlAttributeAttribute()]
    public string script
    {
        get
        {
            return this.scriptField;
        }
        set
        {
            if ((this.scriptField != null))
            {
                if ((scriptField.Equals(value) != true))
                {
                    this.scriptField = value;
                    this.OnPropertyChanged("script");
                }
            }
            else
            {
                this.scriptField = value;
                this.OnPropertyChanged("script");
            }
        }
    }
    private string valueField;
    [System.Xml.Serialization.XmlTextAttribute()]
    public string Value
    {
        get
        {
            return this.valueField;
        }
        set
        {
            if ((this.valueField != null))
            {
                if ((valueField.Equals(value) != true))
                {
                    this.valueField = value;
                    this.OnPropertyChanged("Value");
                }
            }
            else
            {
                this.valueField = value;
                this.OnPropertyChanged("Value");
            }
        }
    }
}

The problem is with value. I want it to be a CDATA. However, when writing the get as follows:

get
{
    XmlDocument doc = new XmlDocument();
    return doc.CreateCDataSection(valueField);
}

this in theory returns the value as CDATA, but it forces me to decorate it with a tag [XmlElement("CDataElement")]that is not what I want, since I want it to be part of the original. When I decorate it that way, it generates one more element in the final XML:

<select script="pepe">
    <CDataElement><![CDATA[SELECT * FROM Users WHERE UserId > 10]]></CDataElement>
</select>

and what I want is:

<select script="pepe">
    <![CDATA[SELECT * FROM Users WHERE UserId > 10]]>
</select>

So the problem is, should I decorate it in another way, or am I totally wrong and I have to do it in another way?

I have a treeview that is bound to a class:

The problem is that I want to add a property that the treeviewitem have, to activate or deactivate parts of the tree, but when I bind an own class, I don't know how to add that property.

Try:

• derive my class from treeviewitem (the bind didn't work for me, maybe I did that wrong)
• add an enable property (it works, but I don't know what to do with that property).
• transform the items of the tree to treeviewitem (it did not work, they are not of that type).

So how do I tell the tree that certain items are disabled (graying them, underlining them, it doesn't matter how, but how so that the user can't click on them).

Tree definition (xalm)

<TreeView x:Name="treeView2" >
    <TreeView.DataContext>
        <Controles:ListaArbol/>
    </TreeView.DataContext>
    <TreeView.Resources>
        <HierarchicalDataTemplate ItemsSource="{Binding Children}" DataType="{x:Type Controles:ListaArbol}" >
            <StackPanel Orientation="Horizontal">
                 <Image Source="{Binding Imagen}"  Stretch="Fill" Width="30" Height="30" HorizontalAlignment="Center" VerticalAlignment="Center" />
                 <TextBlock Text="{Binding texto}"  />
            </StackPanel>
        </HierarchicalDataTemplate>
    </TreeView.Resources>
</TreeView> 

Class that is bound:

public class ListaArbol: TreeViewItemBase
{
    public ListaArbol()
    {
        this.Children = new ObservableCollection<ListaArbol>();
    }

    public string texto { get; set; }

    public string Imagen { get; set; }

    public string Control { get; set; }

    public ObservableCollection<ListaArbol> Children { get; set; }
}

The above class derives from:

public class TreeViewItemBase : INotifyPropertyChanged
{
.....
}

and to load the tree I do something like this:

List<ListaArbol> items = new List<ListaArbol>();
ListaArbol i1 = new ListaArbol { texto = "Archivos", Imagen = "Imagenes/blue-folder-vector.png", Control="ControlArchivos" };
ListaArbol i2 = new ListaArbol { texto = "Consultas", Imagen = "Imagenes/consultas.jpg", Control= "ControlConsultas" };

items.Add(i1);
items.Add(i2);
treeView2.ItemsSource = items;

I have one ObservableCollectionwith items of the following class:

public partial class consultaSelect
{

    private string scriptField;

    private string nombreAccionField;

    private string iconoField;

    private string ordenField;

    private string tooltipField;

    private string valueField;

   //Todos con sus getters y setter respectivos.
}

The property that interests me here is orden. It is used to sort this collection . The problem is that it ordencan have holes, that is, there can be something like that 1,2,5,7,9saved as the deserializer thinks of it (it is a class that is loaded from an XML ).

The issue is that through the view, the user can change the ordenone of two items, and for that what he does is move it in the view (all that works and is solved). The problem comes, because if the user wants to move one position "up" , the item 5should become 2, and the 2would become 5.

The question is, how do I elegantly get what is the maximum item that is less than a certain amount?

It can be done with an whileold fashioned, what I'm looking for is a modern Linq solution that returns that.

Problem:

I am parsing an XML , all that part works perfectly. One of the items is a string of names, separated by commas. What I want is a control that can bind to a class to set and unset the string, based on user selections.

Tests

The serialization and deserialization is automatic and works perfectly, but it obviously leaves me the result in a string. The class that serializes the XML has the interface INotifyPropertyChanged, working for all properties.

I create another class, which is supposed to be the one I'm going to bind to my control:

public class ListaMarcas: System.ComponentModel.INotifyPropertyChanged
{
    private bool bMarcado;
    private string sTexto;
    public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
    public virtual void OnPropertyChanged(string propertyName)
    {
        System.ComponentModel.PropertyChangedEventHandler handler = this.PropertyChanged;
        if ((handler != null))
        {
            handler(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
        }
    }
    public bool Marcado
    {
        get
        {
            return bMarcado;
        }
        set
        {
            if ((bMarcado.Equals(value) != true))
            {
                bMarcado = value;
                this.OnPropertyChanged("Marcado");
            }
        }
    }

    public string texto
    {
        get
        {
            return sTexto;
        }
        set
        {
            if ((sTexto.Equals(value) != true))
            {
                sTexto = value;
                this.OnPropertyChanged("texto");
            }

        }
    }
}

This class should fill an object ObservableCollectionfor the roundtrip to work. I do that on the class that serializes:

private ObservableCollection<ListaMarcas> pListaSistemas;

[XmlIgnore]
public ObservableCollection<ListaMarcas> ListaMarcas
{
    get
    {
        return pListaSistemas;
    }
    set
    {
        if ((pListaSistemas != null))
        {
            if ((pListaSistemas.Equals(value) != true))
            {
                pListaSistemas = value;
                this.OnPropertyChanged("select");
            }
        }
        else
        {
            pListaSistemas = value;
            this.OnPropertyChanged("select");
        }
    }
}

How do I make the string property fill itself, and be transformed into a valid list?

public consultaRestriccion restriccion
{
    get
    {
        return this.restriccionField;
    }
    set
    {
        if ((this.restriccionField != null))
        {
            if ((restriccionField.Equals(value) != true))
            {
                this.restriccionField = value;
                this.OnPropertyChanged("restriccion");
            }
        }
        else
        {
            this.restriccionField = value;
            this.OnPropertyChanged("restriccion");
        }
    }
}

Note that the code is automatically written from XSD2Code , so it is in a partial class.

The string comes in the format: "dato1,dato2,dato3", which makes it easy to transform it into a list by doing split. Where should I put that splitso that all objects are automatically kept up to date?

Edition

The view displays that string, as a list of checkboxes that the user can select or not, and the selected ones have to be the comma-separated string that is sent back to the XML.

On a fresh git install, when setting the keys and everything using tortoise git the repositories are cloned correctly. also the pull and push command works without problems.

However, when opening a command line to do the same thing, running git pull (from a cmd, power shell or mingw) throws an error similar to the following. The error is in the lack of access to the folder

The folder is created in the required path (c:\users\u40497.ssh) however it is not recognized as valid.

The permissions are correct and the windows are open as administrators. The keys are correct, because from tortoise they work. The HOME and HOMEPATH environment variables point to the correct paths.

What could be happening that does not recognize that folder as valid?

I was trying to pad left spaces to a number, so that in my view they would all be formatted (in the view they cannot be formatted).

When I test the following function:

LENGTH (TO_CHAR(a.variacion*100,'999990.99'))

oh coincidence all numbers measure 11.

However, as seen in the following list, this is not real. So, where does Oracle get that 11???

11      -59.00
11        1.00
11      -76.00
11       -5.00
11      -24.00
11       37.00
11      -47.00
11      -14.00
11      -21.00
11      -50.00
11        0.00
11     6032.00
11      -64.00
11       -6.00
11      -28.00
11      -59.00

As a clarification, if I change the mask to something else, for example to TO_CHAR(a.variacion*100,'990.99'), the following is output:

8    -59.00
8      1.00
8    -76.00
8     -5.00
8    -24.00
8     37.00
8    -47.00
8    -14.00
8    -21.00
8    -50.00
8      0.00
8   #######
8    -64.00
8     -6.00
8    -28.00
8    -59.00

In other words, the problem is the mask... but what does that have to do with it???

I would like to create an HTML button that works as if it were a clickable link. When I press the button, I would like it to redirect me to a page. And I would like it to be as accessible as possible.

I would also like there to be no extra characters or parameters in the URL.

How can this be done?

In SQL Server, it is possible to do a INSERT INTOto a table using a SELECT:

INSERT INTO tabla (col, col2, col3)
    SELECT col, col2, col3 FROM otra_tabla WHERE sql = 'ok'

Is this also possible for a UPDATE? I have a temporary table that contains the values, and I would like to update another table using those values. Maybe something like:

UPDATE tabla SET col1, col2
    SELECT col1, col2 FROM otra_tabla WHERE sql = 'ok'
    WHERE tabla.id = otra_tabla.id

Pip is a replacement for easy install. But should I install Pip using easy install on Windows? Is there a better way?