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DRAFT; Incomplete

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The Framework currently several transforms that can be used as part of a model transformation, as described below.

fluid.transforms.arrayToObject

Transforms an array into a JavaScript object.

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fluid.transforms.arrayToSetMembership

 

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fluid.transforms.arrayValue

Transforms a value into an aray. If the value is already an array, the expander will have no effect.

For example:

Start:

var source = {
    cat: "meow",
    sheep: [
        "baaa",
        "wooooool"
    ],
    ...
}



>>

Rule to convert to arrays:

var rules = {
    cat: {                                          
        transform: {
            type: "fluid.transforms.arrayValue",
            inputPath "cat"
        }
    },
    sheep: {
        transform: {
            type: "fluid.transforms.arrayValue",
            inputPath "sheep"
        }
    } 
    ....
}



>>

Result:

{
    cat: ["meow"],
    sheep: [
        "baaa",
        "wooooool"
    ],
    ...
}

Note that the value of cat is now an array, but the value of sheep is unaffected.

 

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fluid.transforms.binaryOp

 

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fluid.transforms.binaryLookup.*

 

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fluid.transforms.condition

 

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fluid.transforms.count

 

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fluid.transforms.linearScale

 

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fluid.transforms.literalValue

 

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fluid.transforms.objectToArray

 

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fluid.transforms.round

 

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fluid.transforms.setMembershipToArray

 

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fluid.transforms.value

This extracts and/or the value of a given path, and can be used for the following purposes:

To rename a property:

Start:

var source = {
    cat: "meow",
    ...
}



>>

Rule to rename "cat" to "feline":

var rules = {
    feline: { 
        transform: {
            type: "fluid.transforms.value",
            // specify only the path to transform
            inputPath: "cat"
        }
    },
    ....
}



>>

Result:

{
    feline: "meow",
    ...
}

To set a default value:

Start:

var source = {
    gerbil: undefined,
    // or if "gerbil" doesn't exist
    ...
}



>>

Rule to set default value of "gerbil":

var rules = {
    gerbil: { 
        transform: {
            type: "fluid.transforms.value",
            // specify path and default value
            inputPath "gerbil",
            value: "squeek"
        }
    },
    ....
}



>>

Result:

{
    gerbil: "squeek",
    ...
}

Note that if "gerbil" has a value initially, it will be unaffected.

To specify a literal value:

Start:

var source = {
    // no mention of kangaroos
    ...
}



>>

Rule to set a value for "kangaroo":

var rules = {
    kangaroo: { 
        transform: {
            type: "fluid.transforms.value",
            // specify only a value
            value: "boingg"
        }
    },
    ....
}



>>

Result:

{
    kangaroo: "boingg",
    ...
}

To change the structure/nesting:

Start:

var source = {
    goat: false,
    sheep: [
        "baaa",
        "wooooool"
    ],
    ...
}



>>

Rule to change the nesting:

var rules = {
    "farm.goat": {                                          
        transform: {
            type: "fluid.transforms.value",
            inputPath "goat"
        }
    },
    "farm.sheep": {
        transform: {
            type: "fluid.transforms.value",
            inputPath "sheep"
        }
    } 
    ....
}



>>

Result:

{
    farm: {
        goat: false,
        sheep: [
            "baaa",
            "wooooool"
        ]
    },
    ...
}

 

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fluid.transforms.value.invert

 

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fluid.transforms.valueMapper

 

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