DataFlex

Load a JSON Array

See more JSON Examples

The Chilkat JSON API requires the top-level JSON to be an object. Therefore, to load an array requires that it first be wrapped as an object. DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    String sJsonArrayStr
    Handle hoSbJson
    Handle hoJson
    Variant vJArray
    Handle hoJArray
    Variant vJObjId
    Handle hoJObjId
    String sTemp1
    Integer iTemp1

    Move False To iSuccess

    // Imagine we want to load this JSON array for parsing:
    Move '[{"id":200},{"id":196}]' To sJsonArrayStr

    // First wrap it in a JSON object by prepending "{ "array":" and appending "}"
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbJson
    If (Not(IsComObjectCreated(hoSbJson))) Begin
        Send CreateComObject of hoSbJson
    End
    Get ComAppend Of hoSbJson '{"array":' To iSuccess
    Get ComAppend Of hoSbJson sJsonArrayStr To iSuccess
    Get ComAppend Of hoSbJson "}" To iSuccess

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComGetAsString Of hoSbJson To sTemp1
    Get ComLoad Of hoJson sTemp1 To iSuccess

    // Now we can get the JSON array
    Get ComArrayAt Of hoJson 0 To vJArray
    If (IsComObject(vJArray)) Begin
        Get Create (RefClass(cComChilkatJsonArray)) To hoJArray
        Set pvComObject Of hoJArray To vJArray
    End

    // Do what you want with the JSON array...
    // For example:
    Get ComObjectAt Of hoJArray 0 To vJObjId
    If (IsComObject(vJObjId)) Begin
        Get Create (RefClass(cComChilkatJsonObject)) To hoJObjId
        Set pvComObject Of hoJObjId To vJObjId
    End
    Get ComIntOf Of hoJObjId "id" To iTemp1
    Showln iTemp1
    Send Destroy of hoJObjId

    Send Destroy of hoJArray


End_Procedure