Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>The <code>/Dest</code> entry in an outline item dictionary can either be a <strong>name</strong>, a <strong>string</strong>, or an <strong>array</strong>.</p> <ul> <li><p>The simplest case is if it's an <strong>array</strong>; then the first item is the page object the outline entry points to (a dictionary). To get the page number, you have to iterate over all pages in the document and see which one is equal (<code>==</code>) to the dictionary you have (<code>CGPDFPageRef</code>s are actually <code>CGPDFDictionaryRef</code>s). You could also traverse the page tree, which is a bit harder, but may be faster (not as much as you might expect, I wouldn't optimize prematurely here). The other items in the array are position on the page etc., search for "Explicit Destinations" in the PDF spec to learn more.</p></li> <li><p>If the entry is a <strong>name</strong> or <strong>string</strong>, it is a named destination. You have to map the name to a destination from the document catalog's <code>/Dests</code> entry which is a dictionary that contains a name tree. A name tree is essentially a tree map that allows fast access to named values without requiring to read all the data at once (as with a plain dictionary). Unfortunately, there's no direct support for name trees in Quartz, so you'll have to do a little more work to parse this structure recursively (see "Name Trees" in the <a href="http://www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf" rel="nofollow">PDF spec</a>).</p></li> </ul> <p>Note that an outline item doesn't necessarily have a <code>/Dest</code> entry, it can also specify its destination via an <code>/A</code> (action) entry, which is a little bit more complex. In most cases, however, the action will be a "GoTo" action that is essentially a wrapper for a destination.</p> <p>The mapping of names to destinations can also be stored as a plain dictionary. In that case, it's in the <code>/Dests</code> entry of the /Names dictionary in the document's catalog. I've rarely seen this though and it was deprecated after PDF 1.2 (current is 1.7).</p> <p>You will definitely need the PDF spec for this: <a href="http://www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf" rel="nofollow">http://www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf</a></p>
    singulars
    1. This table or related slice is empty.
    1. POHow do I retrieve a page number or page reference for an Outline destination in a PDF on iOS?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USlindon fox
    1. USomz
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POHow do I retrieve a page number or page reference for an Outline destination in a PDF on iOS?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    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. COthank you for the info. The docs I am now working with are of the /A and Goto variety. I'm currently to a point where I can create a an of the titles of the pages in the TOC. I see the /A/D/0 page dictionaries in the Outlines, and their corresponding /A/D/0 page dictionaries in the pages. I'm trying to create a dictionary of title->page nvp's, but I can't add CGPDFDictionaryRef's to an NSDictionary...
      singulars
      1. PO
      1. USshawnwall
    2. COI ended up checking for equality by comparing the string value of the content streams of the toc page dictionaries and the actual pageref dictionaries in the page... doesn't seem clean but works. Is there a better way?
      singulars
      1. PO
      1. USshawnwall
    3. COhow to get the string value of the content streams? could you give me a more tip? In my case, "/Outlines/.../A/D/0" works fine, but i can't check for equality from "/Annots/.../A/D/0"
      singulars
      1. PO
      1. USJoey
 

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