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Classic ASP Examples

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(Classic ASP) Firebase GET - Reading Data

Demonstrates how to read parts of a Firebase JSON database. The data used in this example is at Chilkat Firebase Pigs Database, and is shown here:

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
'  Demonstrates how to read parts of a Firebase JSON database.

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  This example assumes a JWT authentication token, if required, has been previously obtained.
'  See Get Firebase Access Token from JSON Service Account Private Key for sample code.

'  Load the previously obtained Firebase access token into a string.
set fac = Server.CreateObject("Chilkat_9_5_0.FileAccess")
accessToken = fac.ReadEntireTextFile("qa_data/tokens/firebaseToken.txt","utf-8")
If (fac.LastMethodSuccess <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( fac.LastErrorText) & "</pre>"
    Response.End
End If

set rest = Server.CreateObject("Chilkat_9_5_0.Rest")

'  Make the initial connection (without sending a request yet).
'  Once connected, any number of requests may be sent.  It is not necessary to explicitly
'  call Connect before each request.
success = rest.Connect("chilkat.firebaseio.com",443,1,1)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

'  If authentication is required...
set authGoogle = Server.CreateObject("Chilkat_9_5_0.AuthGoogle")
authGoogle.AccessToken = accessToken
success = rest.SetAuthGoogle(authGoogle)

'  Chilkat's sample data (pig-rescue data) is publicly readable at: https://chilkat.firebaseio.com/.json

'  Let's get the animals with the shallow parameter so we can see how many pigs exist.
jsonResponse = rest.FullRequestNoBody("GET","/pig-rescue/animal.json?shallow=true")
If (rest.LastMethodSuccess <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

'  The JSON returned should look like this:
'  {"-KI3bD-FU_Dake7sYOiP":true,"-KI3bD-FU_Dake7sYOiT":true,"-KI3bD-FU_Dake7sYOiS":true,"-KI3bD-FU_Dake7sYOiU":true,"-KI3bD-FU_Dake7sYOiV":true,"-KI3bD-FU_Dake7sYOiR":true,"-KI3bD-FU_Dake7sYOiQ":true}
Response.Write "<pre>" & Server.HTMLEncode( jsonResponse) & "</pre>"

'  Parse the response so we can iterate over each pig in the database..
set piggyPath = Server.CreateObject("Chilkat_9_5_0.StringBuilder")
set shallow = Server.CreateObject("Chilkat_9_5_0.JsonObject")
set piggyData = Server.CreateObject("Chilkat_9_5_0.JsonObject")
success = shallow.Load(jsonResponse)
count = shallow.Size
i = 0
Do While i < count

    '  Get each individual pig's data.
    piggyPath.Clear 
    success = piggyPath.Append("/pig-rescue/animal/")
    success = piggyPath.Append(shallow.NameAt(i))
    success = piggyPath.Append("/.json")

    piggyJson = rest.FullRequestNoBody("GET",piggyPath.GetAsString())
    If (rest.LastMethodSuccess <> 1) Then
        Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
        Response.End
    End If

    '  Show this piggy's data...
    '  An example of one pig's data is shown here:
    '  {"birth":"February, 1998","from":"Middle Ave.","gender":"F","in-date":"January, 2000",
    '    "name":"Molly II","picture":{"caption":"Molly in the Pasture","description":"Black pig","file":"molly_th.jpg"},
    '    "species":"pot belly pig","type":"Cathy's Herd"}
    Response.Write "<pre>" & Server.HTMLEncode( "---- " & i & " ----") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( piggyJson) & "</pre>"

    '  Let's get the pig's name, and the caption of the picture.
    success = piggyData.Load(piggyJson)
    Response.Write "<pre>" & Server.HTMLEncode( "name: " & piggyData.StringOf("name")) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "caption: " & piggyData.StringOf("picture.caption")) & "</pre>"

    i = i + 1
Loop

'  Note: In many of the Chilkat examples, you may notice strange ways
'  of doing something that should be simpler and shorter.  For example,
'  building the piggyPath (above) could've been written differently,
'  with some simple string concatenation.
' 
'  The reason is that the Chilkat examples are written in a
'  proprietary "example code" scripting language,
'  and then automatically generated to each of the different programming
'  languages you see on example-code.com.  The code generation is
'  limited in what it can do.  For example, string concatentation
'  is not yet a feature of the "example code" scripting language (as of May 2016),
'  and therefore you won't see the use of a programming language's string
'  concatentation operators in any example.
' 

%>
</body>
</html>

 

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