JSON Splitter

Overview

JSON Splitter is a splitter that runs its context for each item of an input array whose items are objects.

Input

A JSON Splitter block has this input variable:

• items (array, required) Array of items to split

Block properties

The properties of a JSON Splitter block are accessed by editing the block and are divided into these groups:

• Basic properties:

  • Block name
  • Component version (read only)
  • Block ID (read only)

• Deployment:

  • Timeout: execution timeout expressed in minutes (m) or seconds (s).
  • Replicas: number of required instances.
  • Consumer Number: number of threads of the consumer, the software module of the block that provides input to process by taking it from the block's work queue.
  • Memory: required memory.
  • CPU: thousandths of a CPU required (for example: 1000 = 1 CPU).

• Input: this property correspond to the input variable.
  It is read-only—so only descriptive of the expected input—when the block is the first in a flow and the workflow's input has not been explicitly described. In that case the workflow's input JSON must contain a keys whose name and type matches those of the input variable.
  Otherwise, it is editable and must be set.

• Output: blank, since the structure of the output items is determined at runtime and cannot be known in advance.

Output

A JSON Splitter block produces as many items as the top-level objects contained in the input array. The block's context cycles over these items.
For example, if the input array is:

{
    "topten": [
        {
            "author": "John Grisham",
            "title": "The Pelican Brief",
            "editor": "Doubleday",
            "abstract": "In this legal thriller, law student Darby Shaw uncovers a conspiracy involving the assassination of two Supreme Court justices."
        },
        {
            "author": "Stephen King",
            "title": "Gerald's Game",
            "editor": "Viking Press",
            "abstract": "A woman is trapped and left to face her fears and memories of childhood trauma after her husband dies during a sex game."
        },
        {
            "author": "Tom Clancy",
            "title": "Without Remorse",
            "editor": "Putnam",
            "abstract": "Ex-Navy SEAL John Kelly seeks revenge against a drug lord after his pregnant wife is murdered."
        },
        {
            "author": "Danielle Steel",
            "title": "Mixed Blessings",
            "editor": "Delacorte Press",
            "abstract": "Three couples face the challenges of infertility, adoption, and marital issues in this heartwarming novel."
        },
        {
            "author": "James Patterson",
            "title": "Along Came a Spider",
            "editor": "Little, Brown and Company",
            "abstract": "Detective Alex Cross must catch a serial killer who targets Washington D.C. politicians and their children."
        },
        {
            "author": "Nora Roberts",
            "title": "Born in Ice",
            "editor": "Jove",
            "abstract": "The second installment in the 'Born In' trilogy follows Brianna Concannon as she struggles to save her family's bed and breakfast in Ireland."
        },
        {
            "author": "Mary Higgins Clark",
            "title": "Remember Me",
            "editor": "Simon & Schuster",
            "abstract": "When a plane crash kills her husband, Menley Nichols begins to believe that someone is trying to kill her as well."
        },
        {
            "author": "John Grisham",
            "title": "The Client",
            "editor": "Doubleday",
            "abstract": "Eleven-year-old Mark Sway hires lawyer Reggie Love to protect him from the mob after he witnesses a murder."
        },
        {
            "author": "Michael Crichton",
            "title": "Disclosure",
            "editor": "Knopf",
            "abstract": "A man is falsely accused of sexual harassment by his female boss in this gripping corporate thriller."
        },
        {
            "author": "Robert James Waller",
            "title": "Slow Waltz in Cedar Bend",
            "editor": "Warner Books",
            "abstract": "A college professor reflects on a past affair with an enigmatic woman while on a trip to Iowa."
        }
    ]
}

the first output item will be:

{
    "author": "John Grisham",
    "title": "The Pelican Brief",
    "editor": "Doubleday",
    "abstract": "In this legal thriller, law student Darby Shaw uncovers a conspiracy involving the assassination of two Supreme Court justices."
}

The second item will be:

{
    "author": "Stephen King",
    "title": "Gerald's Game",
    "editor": "Viking Press",
    "abstract": "A woman is trapped and left to face her fears and memories of childhood trauma after her husband dies during a sex game."
}

The third item will be:

{
    "author": "Tom Clancy",
    "title": "Without Remorse",
    "editor": "Putnam",
    "abstract": "Ex-Navy SEAL John Kelly seeks revenge against a drug lord after his pregnant wife is murdered."
}

and so on.