I got XML items.xml file with (almost) the same values as my items table has, I mean fe. there is a field in the items table: level and for any id the level is set to 144, but in the XML file, the level= attribute is set to "1" (for the same id) - what is the best way to correct values like this?
It should go like this:
Check value level in the database table for any id.
If the level value from the database is other than the level="" attribute for this ID, set it to the same level value as in the
database.
It can be kinda hard, since there is about ~40000 records to check.
I will appreciate some examples also!
Depending on what programming-language you are using, find the corresponding StAX-implementation. For Java I would go with XMLStreamReader (JavaDocs) and XMLStreamWriter (JavaDocs). You should find some tutorials on the internet.
When you encounter the START_ELEMENT event while reading the XML, check the tag's name (getLocalName()). If you are on the correct tag, check for the attributes, i.e. using the getAttribute...()-methods and handle the writing differently.
Along all of this, use an XMLStreamWriter to write your new XML to some OutputStream. After all, just write the OutputStream to whereever you wish (File, etc.).
Don't forget to read your Input-XML using a BufferedInputStream (or some other buffered way).
Good luck!
P.S.: You can also use XMLEventReader or XMLEventWriter, but personally I prefer XMLStreamReader / XMLStreamWriter. Also, you could use different StAX-Implementations like Woodstox.
P.P.S.: For PHP use XMLReader and XMLWriter. See here.
Related
If I define a type
type MyType = CsvProvider<"schema.csv",
Schema="A->MyA=int, B->MyB=int">
And if i load csv's like
let csv1 = MyType.Load("file1.csv")
If "file1.csv" contains all the columns that "schema.csv" has, but with different order, and have extra columns which do not appear in "schema.csv". Can I still load it provided that I am only interested in the columns that specified in "schema.csv"?
Either you have a locked schema of the CSV-files, and use CsvProvider, or you dont.
You always have the option of "reverting" to CsvFile (CsvParser): http://fsharp.github.io/FSharp.Data/library/CsvFile.html
With the latter you can easily parse any CSV-file, confirm that it has the columns you want, and then read them as wanted.
I usually revert to the CsvFile, since often creating CSV-files are done somewhat unstructured and apperently ad-hoc (at least in the cases I have encountered), and then CsvFile are a good solution, with somewhat more flexibility then in CsvProvider. Yes somewhat more code too, but still...
That use case is not supported. If the column order is different things won't work. The whole CsvProvider is built on the assumption that the data you give it has the same structure of the sample you provided. You can always submit an issue here: https://github.com/fsharp/FSharp.Data/issues/
When I use AppleScript to get the properties of an object, a record is returned.
tell application "iPhoto"
properties of album 1
end tell
==> {id:6.442450942E+9, url:"", name:"Events", class:album, type:smart album, parent:missing value, children:{}}
How can I iterate over the key/value pairs of the returned record so that I don't have to know exactly what keys are in the record?
To clarify the question, I need to enumerate the keys and values because I'd like to write a generic AppleScript routine to convert records and lists into JSON which can then be output by the script.
I know it's an old Q but there are possibilities to access the keys and the values now (10.9+). In 10.9 you need to use Scripting libraries to make this run, in 10.10 you can use the code right inside the Script Editor:
use framework "Foundation"
set testRecord to {a:"aaa", b:"bbb", c:"ccc"}
set objCDictionary to current application's NSDictionary's dictionaryWithDictionary:testRecord
set allKeys to objCDictionary's allKeys()
repeat with theKey in allKeys
log theKey as text
log (objCDictionary's valueForKey:theKey) as text
end repeat
This is no hack or workaround. It just uses the "new" ability to access Objective-C-Objects from AppleScript.
Found this Q during searching for other topics and couldn't resist to answer ;-)
Update to deliver JSON functionality:
Of course we can dive deeper into the Foundation classes and use the NSJSONSerialization object:
use framework "Foundation"
set testRecord to {a:"aaa", b:"bbb", c:"ccc"}
set objCDictionary to current application's NSDictionary's dictionaryWithDictionary:testRecord
set {jsonDictionary, anError} to current application's NSJSONSerialization's dataWithJSONObject:objCDictionary options:(current application's NSJSONWritingPrettyPrinted) |error|:(reference)
if jsonDictionary is missing value then
log "An error occured: " & anError as text
else
log (current application's NSString's alloc()'s initWithData:jsonDictionary encoding:(current application's NSUTF8StringEncoding)) as text
end if
Have fun, Michael / Hamburg
If you just want to iterate through the values of the record, you could do something like this:
tell application "iPhoto"
repeat with value in (properties of album 1) as list
log value
end repeat
end tell
But it's not very clear to me what you really want to achieve.
Basically, what AtomicToothbrush and foo said. AppleScript records are more like C structs, with a known list of labels, than like an associative array, with arbitrary keys, and there is no (decent) in-language way to introspect the labels on a record. (And even if there were, you’d still have the problem of applying them to get values.)
In most cases, the answer is “use an associative array library instead.” However, you’re specifically interested in the labels from a properties value, which means we need a hack. The usual one is to force an error using the record, and then parse the error message, something like this:
set x to {a:1, b:2}
try
myRecord as string
on error message e
-- e will be the string “Can’t make {a:1, b:2} into type string”
end
Parsing this, and especially parsing this while allowing for non-English locales, is left as an exercise for the reader.
ShooTerKo's answer is incredibly helpful to me.
I'll bring up another possibility I'm surprised I didn't see anyone else mention, though. I have to go between AppleScript and JSON a lot in my scripts, and if you can install software on the computers that need to run the script, then I highly recommend JSONHelper to basically make the whole problem go away:
https://github.com/isair/JSONHelper
I have three dropdown boxes on a Main_Form. I will add the chosen content into three fields on the form, Form_Applications.
These three lines are added :
Form_Applications.Classification = Form_Main_Form.Combo43.Value
Form_Applications.Countryname_Cluster = Form_Main_Form.Combo56.Value
Form_Applications.Application = Form_Main_Form.Combo64.Value
The first two work perfectly but the last one gives error code 438!
I can enter in the immediate window :
Form_Applications.Classification = "what ever"
Form_Applications.Countryname_Cluster = "what ever"
but not for the third line. Then, after enter, the Object doesn't support this property or method error appears.
I didn't expect this error as I do exactly the same as in the first two lines.
Can you please help or do you need more info ?
In VBA Application is a special word and should not be used to address fields.
FormName.Application will return an object that points to the application instance that is running that form as opposed to an object within that form.
From the Application object you can do all sorts of other things such as executing external programs and other application level stuff like saving files/
Rename your Application field to something else, perhaps ApplicationCombo and change your line of code to match the new name. After doing this the code should execute as you expect.
Form_Applications.Application is referring to the application itself. It is not a field, so therefore it is not assignable (at least with a string).
You really haven't provided enough code to draw any real conclusions though. But looking at what you have posted, you definitely need to rethink your approach.
It's to say definitely but you are not doing the same. It looks like you are reading a ComboBox value the same (I will assume Combo64 is the same as 43 and 56) but my guess is that what you are assigning that value to is the problem:
Form_Applications.Application =
Application is not assignable. Is there another field you meant to use there?
I want to be able to parse specific content from a website into a mySQL database. For example, on site http://allrecipes.com/Recipe/Fluffy-Pancakes-2/Detail.aspx I want to parse into my database (which has a table with columns RecipeName, Ingredients 1-10).
So basically my database will contain the name and all the ingredients for that recipe. There is no need to edit the content, simply parse them in as is (i.e. 3/4 cup milk) since i am using character in my database.
How exactly do I go about doing this? I was looking a pre-built parsers and it seems its tough to find one that's easy to use since I am fairly new to programming. Of course, I can manually enter values in but I want to parse them in.
Would it be possible to just parse this content and write a file that has a RecipieName, Ingredient string which I can then parse into my database? Or should I just do it directly into the database? I am unsure as to how to connect a database to a parser also directly, but I might be able to find some information online.
Basically, I am looking for help on how to exactly go about doing this since I am not very well versed in programming and this seems to be a lot more complicated than it might be.
I am using Java as my main language right now, although I can't say I am very good at it. But I should be able to understand the basic concepts.
Any suggestions on what parser to use or how to do this?
Thanks!
This is how I would do it in PHP. This is almost certainly NOT the most efficient way to do it, nor has it been debugged.
function parseHTML($rawHTML){
$startPosition = strpos($rawHTML,'<div class="ingredients"'); //Find the position of the beginning of the ingredients list, return the character number.
$endPosition = strpos($rawHTML,'</div>',$startPosition); //Find the position of the end of the ingredients list, begin searching from the beginning of the list (found in step 1)
$relevantPart = substr($rawHTML,$startPosition,$endPosition); //Isolate the ingredients list
$parsedString = strip_tags($relevantPart); //Strip the HTML tags off of the ingredients list
return $parsedString;
}
Still to be done: You say you have a mySQL database with 10 separate ingredients columns. This code outputs everything as one big string. You would have to change the strip_tags($relevantPart) function to strip_tags($relevantPart,"<li>"). That would let the <li> tags through. Then, you would have to loop through every <li> tag, performing a similar function to this. It shouldn't be too hard, but I don't feel comfortable writing it with no functioning PHP server.
This question bugged me for years now and can't seem to find good solution still. I working in PHP and Java but it sounds like this maybe language-agnostic :)
Say we have a standard status reference table that holds status ids for some kind of entity. Further let's assume the table will have just 5 values, and will remain like this for a long time, maybe edited occasionally with addition of a new status.
When you fetch a row and need to see what status it is you have 2 options(as I see it at least) - put it straight ID values(magic numbers that is) or use a named constant. Latter seem much cleaner, the question though is where those named constants should leave? In a model class? In a class that uses this particular constant? Somewhere else?
It sounds like what you're wanting to do is an enumerated value.
This is a value that has a literal name mapped to a constant value, this would be something like
Statusone = 1
Statustwo = 2
Then anywhere in your program you could refrenece statusone which the compiler would see as 1.
I'm not sure if this exists in php but I'm pretty sure it does in java
EDIT In response to some comments
I would typically put enumerated values in some kind of global namespace, or if you only need them when you are using that class spefically you can put them at the class level.