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Syntax
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Result = SRP_JSONJson(Handle, "GETVALUEGetValue", Path, Default) |
Returns
A descendant's value if it was found, "" if not.
Parameters
| Parameter | Description |
|---|---|
| Handle | Handle to a JSON Entity. Required. |
| Path | A formatted string indicating the desired descendant. Required. |
| Default | An alternative value to return if the descendant's value is null. Optional. If this argument is ommitted, then a null value will return "<null>". |
Remarks
The GETVALUE GetValue service returns the value of a descendant entity somewhere within the current JSON Entity Handle. If the descendant is an object or array, then you'll get the entire JSON string for that entity. Otherwise, you'll get the element's value without extraneous formatting (like quotes around strings).
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MenuJSON = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu") |
If you want to get a child of menu, you separate each member name with a period, like so:
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ItemsJSON = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.items") |
If you want to get an element within an array, you use square brackets instead of periods. This is how we drill down directly to the twelfth element within the items array:
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ItemJSON = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.items[12]") |
And this is how we get the handle to the "label" member of the second item in the items array:
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Label = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.items[2].label") |
| Note |
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| This service always returns JSON Strings or values. If you want to get the JSON Entity Handle, you need to use GETGet instead. |
Example
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// Test parsing an existing JSON string and then drilling down into specific values
SampleJSON = '{"menu": {'
SampleJSON := ' "header": "SVG Viewer",'
SampleJSON := ' "items": ['
SampleJSON := ' {"id": "Open"},'
SampleJSON := ' {"id": "OpenNew", "label": "Open New"},'
SampleJSON := ' null,'
SampleJSON := ' {"id": "ZoomIn", "label": "Zoom In"},'
SampleJSON := ' {"id": "ZoomOut", "label": "Zoom Out"},'
SampleJSON := ' {"id": "OriginalView", "label": "Original View"},'
SampleJSON := ' null,'
SampleJSON := ' {"id": "Quality"},'
SampleJSON := ' {"id": "Pause"},'
SampleJSON := ' {"id": "Mute"},'
SampleJSON := ' null,'
SampleJSON := ' {"id": "Find", "label": "Find..."},'
SampleJSON := ' {"id": "FindAgain", "label": "Find Again"},'
SampleJSON := ' {"id": "Copy"},'
SampleJSON := ' {"id": "CopyAgain", "label": "Copy Again"},'
SampleJSON := ' {"id": "CopySVG", "label": "Copy SVG"},'
SampleJSON := ' {"id": "ViewSVG", "label": "View SVG"},'
SampleJSON := ' {"id": "ViewSource", "label": "View Source"},'
SampleJSON := ' {"id": "SaveAs", "label": "Save As"},'
SampleJSON := ' null,'
SampleJSON := ' {"id": "Help"},'
SampleJSON := ' {"id": "About", "label": "About Adobe CVG Viewer..."}'
SampleJSON := ' ],'
SampleJSON := ' "testbool": "true",'
SampleJSON := ' "testint": "1234567890",'
SampleJSON := ' "testreal": "1234567890.987654321"'
SampleJSON := '}}'
// Parse it, then grab some values
If SRP_JSONJson(ObjectHandle, "PARSEParse", SampleJSON) EQ "" then
TestValue = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.items[1].id")
TestValue = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.items[12].label")
TestValue = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.items[3]")
TestValue = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.testbool")
TestValue = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.testint")
TestValue = SRP_JSONJson(ObjectHandle, "GETVALUEGetValue", "menu.testreal")
SRP_JSONJson(ObjectHandle, "RELEASERelease")
end |
