Contact

Email: bryan@bluelinecity.com

I try to answer every email I receive the same day however days are hectic now so there’s no telling. All I ask is to give me a couple days to answer. I’ll be posting a forum so as to try and capture the frequently asked questions.

 

3 Responses to “Contact”

  1. Joseph Says:
    January 28th, 2010 at 12:43 am

    foul…. need examples of use, not just jscript, need html, etc.

    THANKS!

  2. Paul Swennenhuis Says:
    September 21st, 2011 at 4:24 pm

    Hi Bryan,

    I spent all day looking for a powerful yet easy-to-use XPath-like JSON query language.
    Yours evaluated as top entry (so congrats!).
    However, during testing I discovered JPath has problems with nested properties.
    I extended your demo ‘library’ JSON dataset by making objects of the chapters of a book (see below) and then tried to query it like this:

    var somevalue = jpath.query(‘books[title == "Brief History of time"][0]/chapters[name == "Chapter 1"][0]/contents’);

    However that results in null. But when I split the query in two, using the result of the first part to create a new JPath object and use that to query the second part, it works fine:

    var somevalue = new JPath(jpath.query(‘books[title == "Brief History of time"][0]‘)).query(‘/chapters[name == "Chapter 1"][0]/contents’); // results in ‘A lot of paragraphs’ which is what I expected.

    Can you shed your light on this?

    Also, the ‘and’ and ‘or’ operators do not seem to work correctly: when I enter this query:

    var somevalue = jpath.query(‘books[title == "Brief History of time" and isbn == "1234-ABCD"][0]‘);

    it results in null again.

    Here are the data I used:

    var library = {
    ‘name’ :’My Library’,
    ‘@open’ : ’2007-17-7′,
    ‘address’ : {
    ‘city’ : ‘Springfield’,
    ‘zip’ : ’12345′,
    ‘state’ : ‘MI’,
    ‘street’ : ‘Mockingbird Lane’
    },
    ‘books’:[
    {
    'title' : 'Harry Potter',
    'isbn' : '1234-1234',
    'category' : 'Childrens',
    'available' : '3',
    'chapters' : [ 'Chapter 1', 'Chapter 2' ]
    },
    {
    ‘title’ : ‘Brief History of time’,
    ‘isbn’ : ’1234-ABCD’,
    ‘category’ : ‘Science’,
    ‘chapters’ : [
    {'name': 'Chapter 1',
    'contents': 'A lot of paragraphs'
    },
    {'name': 'Chapter 2',
    'contents': 'Also a lot of paragrahps'
    }
    ]
    },
    {
    ‘title’ : ‘Lord of the Rings’,
    ‘isbn’ : ’1234-PPPP’,
    ‘category’ : ‘Fiction’,
    ‘chapters’ : [ 'Section 1', 'Section 2' ]
    }
    ],
    ‘categories’ : [
    {'name':'Childrens', 'description':'Childrens books'},
    {'name':'Science', 'description':'Books about science'},
    {'name':'Fiction', 'description':'Fiction books'}
    ]};

    Thanks in advance,

    Paul

  3. admin Says:
    September 21st, 2011 at 10:40 pm

    Hi Paul, Thanks for reporting this bug. I found a greedy regular expression that was taking up too much of the quoted strings. I just uploaded a bug fixed version of jpath ( 1.0.5 ) that solves this issue.

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