Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Here's a simple parser, it should deal with all kinds of abusive nesting and will be robust to single and double quotes -- but it won't care if you mix them <code>'test"</code> is treated equivalent to <code>"test"</code>.</p> <p>edit: added comments, and now it deals with escaped quotes in strings. (and now improved string token handling even more)</p> <pre><code>import java.io.IOException; import java.io.StringReader; import java.util.ArrayList; import java.util.List; public class StringToList { public static void main(String[] args) throws IOException{ StringReader sr = new StringReader("[[\"it\\\"em1\", \"item2\",\"item3\"], [\"some\",\"item\"], [\"far\",\"out\",\"string\"]]"); System.out.println(tokenize(sr)); } @SuppressWarnings({ "rawtypes", "unchecked" }) public static List tokenize(StringReader in) throws IOException{ List stack = new ArrayList&lt;Object&gt;(); int c; while((c = in.read()) != -1){ switch(c){ case '[': // found a nested structure, recurse.. stack.add(tokenize(in)); break; case ']': // found the end of this run, return the // current stack return stack; case '"': case '\'': // get the next full string token stack.add(stringToken(in)); break; } } // we artificially start with a list, though in principle I'm // defining the string to hold only a single list, so this // gets rid of the one I created artifically. return (List)stack.get(0); } public static String stringToken(StringReader in) throws IOException{ StringBuilder str = new StringBuilder(); boolean escaped = false; int c; outer: while((c = in.read()) != -1){ switch(c){ case '\\': escaped = true; break; case '"': case '\'': if(escaped){ escaped = false; }else{ break outer; } default: str.append((char)c); } } return str.toString(); } } </code></pre> <p>Just a couple of notes: this won't enforce your syntax to be correct, so if you do something goofy with the quotes, like I described, it might still get parsed as (un)expected. Also, I don't enforce commas at al, you don't even need a space between the quotes, so <code>["item1""item2"]</code> is just as valid using this parser as <code>["item1", "item2"]</code>, but perhaps more oddly, this thing should also deal with <code>["item1"asdf"item2"]</code> ignoring <code>asdf</code>.</p>
    singulars
    1. This table or related slice is empty.
    1. POjava: how to convert this string to ArrayList?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USMark Elliot
    1. USMark Elliot
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI'd like to see the recursive version...
      singulars
      1. PO
      1. USRing Ø
    2. CO@ring0 this is recursive.
      singulars
      1. PO
      1. USMark Elliot
    3. COOoooooooops :-)
      singulars
      1. PO
      1. USRing Ø
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload