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XPath for json data set
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README.md

JPath is a tool for riding through json using an XPath syntax.

Install for Node.js

npm install JPath

Travis CI tracker: http://travis-ci.org/j-san/JPath Build Status

Usage

JPath improve Array method set, you just need to add elements in arrays to start using JPath.

Array.query([path]) or Array.q([path])

Return a subset of the array containig each matching elements.

Array.count([path])

Return the number of matching elements by path.

Array.sum([path])

Return the sum of matched values.

Array.exists([path])

Return true if any element match the path.

Array.valueOf([path])

Return a string containig each literal values of the array.

Array.copyOf([path])

Return a string representation of the array.

Supported XPath syntax

path/to/somewhere
path//deep//inside/and/*/all/children
with[contains/path]/and/index[123]/selection
computing[(1+2)*123=5]
/any[combining]/of//different/*[0]/syntax
...

Supported XPath operators

/ child // descendant % modulo / divide

  • multiply
  • add
  • substract | union = equal and and or or

Todo

  • use forEach and hasOwnProperty in loops
  • use grunk
  • function support
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