Data instruction

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Data instruction
Data instructions allow you to dynamically set properties of a state or actions when they are instantiated using data from the projected process.
<ref> - Resolve a reference to another part of the document using a dot key path
<ifset> - Checks if a reference is null. If so, replace the object by null.
<switch> - Choose one of the child properties based on a property in the document
<merge> - Merge a set of objects
<enrich> - Enrich an object with extra data by matching properties
<tpl> - Parse text as Mustache template
<apply> - Project an object using the JMESPath query language
<dateformat> - Takes a date and a format (defaults to Y-m-d) and formats the accordingly. Optionally you can set the timezone if you wish to output timezone information.
Example
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{
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    "foo": {
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        "bar": {
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            "qux": 12345
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        },
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        "term": "data enrichment",
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        "city": "Amsterdam",
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        "country": "Netherlands"
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    },
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    "amount": {
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        "<ref>": "foo.bar.qux"
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    },
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    "message": {
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        "<tpl>": "I want to go to {{ foo.city }}, {{ foo.country }}"
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    },
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    "shipping": {
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        "<switch>": {
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            "on": { "<ref>": "foo.country" },
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            "options": {
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                "USA": "UPS",
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                "Netherlands": "PostNL"
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            },
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            "default": "DHL"
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        }
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    },
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    "user": {
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        "<src>": "https://api.example.com/users/9870"
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    },
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    "search_results": {
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        "<apply>": {
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            "projection": "RelatedTopics[].{url: FirstURL, description: Text}",
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            "input": {
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                "<src>": {
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                    "<tpl>": "http://api.duckduckgo.com/?q={{ foo.term }}&format=json"
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                }
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            }
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        }
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    },
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    "profile": {
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        "<merge>": [
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            {
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                "<ref>": "foo.bar"
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            },
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            {
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                "<hash>": {
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                    "algo": "md5",
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                    "input": "foo"
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                }
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            },
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            {
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                "apples": 100,
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                "pears": 220
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            }
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        ]
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    }
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}
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Last modified 2yr ago
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