api help

os.unloadAPI("dbapi")
os.loadAPI("dbapi")
dbapi.setValue("dbfile", 1, ".-.")
dbapi.getValue("dbfile", 1)
if value == nil then
print("noluck")
else
print(value)
end

^tries to access api, always returns nil/noluck

vAPI

–Creeper9207 Code: database (API)–
tDB = {}
function setValue(database, key, value)
local tFile = fs.open(database, "w")
table.insert(tDB, key, value)
tFile.write(textutils.serialize(tDB))
tFile.flush()
tFile.close()
end
function getValue(tDatabase, tKey)
local tFile = fs.open(tDatabase, "r")
local tData = tFile.readAll()
tRealData = textutils.unserialize(tData)
value = tRealData[tKey]
tFile.close()
end

They're in different function environments. You should be returning values from the API and putting the return values into local variables in your code.

how would i do that?

The problem here is that whatever global variable you set inside the API after you load it is not that easily accessible. Even though it is still possible to access it you shouldn't have to. The right way here would be to return your value from the function:

local function getName ()
  return "Adam" --# return any value you want here
end

local name = getName() --# catch that value and put it into a variable

print( name ) --> Adam

At the end of your functions just do 'return [thisVar]' and when you are calling the api function do myVar=thisapi.myCode() to set
example with your code:
your api

function getValue(tDatabase, tKey)
local tFile = fs.open(tDatabase, "r")
local tData = tFile.readAll()
tRealData = textutils.unserialize(tData)
value = tRealData[tKey]
tFile.close()
return value
end

and your main script

os.unloadAPI("dbapi")
os.loadAPI("dbapi")
dbapi.setValue("dbfile", 1, ".-.")
local value=dbapi.getValue("dbfile", 1)
if value == nil then
print("noluck")
else
print(value)
end

ok thanks guys

api:

--Creeper9207 Code: database (API)--
tDB = {}
function setValue(database, key, value)
  local tFile = fs.open(database, "w")
  table.insert(tDB, key, value)
  tFile.write(textutils.serialize(tDB))
  tFile.flush()
  tFile.close()
end
function getValue(tDatabase, tKey)
  local tFile = fs.open(tDatabase, "r")
  local tData = tFile.readAll()
  tRealData = textutils.unserialize(tData)
  local value = tRealData[tKey]
  tFile.close()
  return value
end

Main script: (part that errors)

--Creeper9207 Code: database editor terminal--
os.unloadAPI("dbapi")
os.loadAPI("dbapi")
running = 1
args = { ... }
thefile = args[2]
if args[2] then
if args[1] == "write" then
print("Editing " .. args[2])
while true do
  if running == 1 then
  print("Enter key to modify or type 'exit' to exit")
  io.write("dbTerm> ")
  a = io.read()
  if a == "exit" then
	shell.run("shell")
	running = 0
  else
  print("Enter a value")
  io.write("dbTerm> ")
  b = io.read()
  dbapi.setValue(args[2], a, B)/>/>
  print(a .. " set to " .. b .. " in " .. args[2])
  end
end
end
elseif args[1] == "read" then
  print("Reading " .. args[2])
  while true do
  if running == 1 then
	print("Enter key to view or 'exit' to exit")
	io.write("dbTerm> ")
	g = io.read()
	if g == "exit" then
	shell.run("shell")
	running = 0
	else
    value = dbapi.getValue(args[2], g)
	sleep(0.01)
	print(value)
	end
	end
	end
else
  print("usage: dbTerm <read/write> <database file>")
end
else
print("usage: dbTerm <read/write> <database file>")
end

one that works:

os.unloadAPI("dbapi")
os.loadAPI("dbapi")
value = dbapi.getValue("datanew", 19)

print(value)

database:

{
  [ 19 ] = "seventeen",
}

dbapi.getValue() fails in the main script for NO KNOWN REASON

What does the error message tell? Or is just not working, but finishes back to shell without any error?

no error, just does not work, (gives a nil value)

at which arguments to your mainscript?

dbapitest read datanew

all other argments work, just not read

What do you type in for g as it asks for a key to review ?

19

Oh, well, I think the problem is in the type of g. As you read it in, you are asking your api for the key "19" as a string, rather than 19 as a number. You would have to tonumber it, or have your information indexed after strings

Also, your writing will not work, as you are setting data to a capital B, rather than uncap b ;)/>

So g.toInt()? And why would I work in set value and not in get?

And writing does work I wrote the database with it

I think something wired happened when I posted it

Plus it doesn't error

To get your input converted to a number, you just do tonumber(g)

Any Idea why writing worked w/ o convo?

Well hey it worked thx man

Threads merged. Please stick to just one topic for all questions concerning a given piece of code.

In Lua, its tonumber(thing)
Edit: Ninjad


Maybe this is why:
Also ninjad. But still a concern.
(around line 21 in the main script)

b = id.read()
dbapi.setValue(args[2], a, B)/> --# you use a capital 'b' here but lowercase for read()