udf

package
v0.23.3 Latest Latest
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 Go to latest Published: May 30, 2019 License: Apache-2.0 Imports: 10 Imported by: 0

README

Expandable Collection User Defined Function

Usage
Data substitution

    aMap := data.NewMap();
    aMap.Put("ts", "2015-02-11")
    udf.Register(aMap)
    expanded := aMap.ExpandAsText(`$FormatTime($ts, "yyyy")`)
Data node selection

	holder := data.NewMap()
    collection := data.NewCollection()
    collection.Push(map[string]interface{}{
        "amount": 2,
        "id":2,
        "name":"p1",
        "vendor":"v1",
    })
    collection.Push(map[string]interface{}{
        "amount": 12,
        "id":3,
        "name":"p2",
        "vendor":"v2",
    })
    holder.SetValue("node1.obj", collection)

	records, err := Select([]interface{}{"node1/obj/*", "id", "name:product"}, holder)
The list of defined UDFs
  • Length, Len returns length of slice, map or string
  • AsMap - convert source into a map, it accepts data structure, or JSON, YAML literal
  • AsCollection - convert source into a slice, it accepts data structure, or JSON, YAML literal
  • AsData - convert source into a map or slice, it accepts data structure, or JSON, YAML literal
  • AsInt - convert source into a an int
  • AsFloat - convert source into a a float
  • AsBool - convert source into a boolean
  • AsNumber - converts to either int or float
  • FormatTime, takes two arguments, date or now, followed by java style date format
  • Values - returns map values
  • Keys - return map keys
  • IndexOf - returns index of matched slice element
  • Join - join slice element with supplied separator
  • Sum - sums values for matched Path, i.e. $Sum('node1/obj/*/amount')
  • Count - counts values for matched Path, i.e. $Sum('node1/obj/*/amount')
  • Select - selects attribute for matched path, i.e $Select("node1/obj/*", "id", "name:product")
  • QueryEscape - url escape
  • QueryUnescape - url unescape
  • Base64Encode
  • Base64DecodeText
  • TrimSpace
  • Elapsed elapsed time
  • Rand

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func AsBool 

func AsBool(source interface{}, state data.Map) (interface{}, error)

AsBool converts source into bool

func AsCollection 

func AsCollection(source interface{}, state data.Map) (interface{}, error)

AsCollection converts source into a slice

func AsData 

func AsData(source interface{}, state data.Map) (interface{}, error)

AsData converts source into map or slice

func AsFloat 

func AsFloat(source interface{}, state data.Map) (interface{}, error)

AsFloat converts source into float64

func AsFloat32 added in v0.19.1 

func AsFloat32(source interface{}, state data.Map) (interface{}, error)

AsFloat32 converts source into float32

func AsFloat32Ptr added in v0.19.1 

func AsFloat32Ptr(source interface{}, state data.Map) (interface{}, error)

AsFloat32 converts source into float32

func AsInt 

func AsInt(source interface{}, state data.Map) (interface{}, error)

AsInt converts source into int

func AsJSON added in v0.7.0 

func AsJSON(source interface{}, state data.Map) (interface{}, error)

AsJSON converts source to JSON

func AsMap 

func AsMap(source interface{}, state data.Map) (interface{}, error)

AsMap converts source into map

func AsNumber added in v0.15.0 

func AsNumber(value interface{}, state data.Map) (interface{}, error)

AsNumber return int or float

func AsString 

func AsString(source interface{}, state data.Map) (interface{}, error)

AsInt converts source into int

func AsStringMap added in v0.18.2 

func AsStringMap(source interface{}, state data.Map) (interface{}, error)

AsStringMap returns map[string]string

func Base64Decode added in v0.6.6 

func Base64Decode(source interface{}, state data.Map) (interface{}, error)

Base64Decode decodes source using base64.StdEncoding

func Base64DecodeText added in v0.7.0 

func Base64DecodeText(source interface{}, state data.Map) (interface{}, error)

Base64DecodeText decodes source using base64.StdEncoding to string

func Base64Encode added in v0.6.6 

func Base64Encode(source interface{}, state data.Map) (interface{}, error)

Base64Decode encodes source using base64.StdEncoding

func Concat added in v0.18.0 

func Concat(params interface{}, state data.Map) (interface{}, error)

Concat concatenate supplied parameters, parameters

func Count added in v0.15.0 

func Count(xPath interface{}, state data.Map) (interface{}, error)

Count returns count of matched nodes leaf value

func Elapsed added in v0.15.0 

func Elapsed(source interface{}, state data.Map) (interface{}, error)

Elapsed returns elapsed time

func FormatTime 

func FormatTime(source interface{}, state data.Map) (interface{}, error)

FormatTime return formatted time, it takes an array of two arguments, the first id time, or now followed by java style time format.

func IndexOf 

func IndexOf(source interface{}, state data.Map) (interface{}, error)

IndexOf returns index of the matched slice elements or -1

func Join 

func Join(args interface{}, state data.Map) (interface{}, error)

Join joins slice by separator

func Keys 

func Keys(source interface{}, state data.Map) (interface{}, error)

Keys returns keys of the supplied map

func Length 

func Length(source interface{}, state data.Map) (interface{}, error)

Length returns length of slice or string

func Merge added in v0.18.0 

func Merge(params interface{}, state data.Map) (interface{}, error)

Merge creates a new merged map for supplied maps, (mapOrPath1, mapOrPath2, mapOrPathN)

func QueryEscape 

func QueryEscape(source interface{}, state data.Map) (interface{}, error)

QueryEscape returns url escaped text

func QueryUnescape added in v0.8.1 

func QueryUnescape(source interface{}, state data.Map) (interface{}, error)

QueryUnescape returns url escaped text

func Rand added in v0.17.1 

func Rand(params interface{}, state data.Map) (interface{}, error)

Rand returns random

func Register 

func Register(aMap data.Map)

Register registers defined in this package UDFs

func Select added in v0.17.0 

func Select(params interface{}, state data.Map) (interface{}, error)

Select returns all matched attributes from matched nodes, attributes can be alised with sourcePath:alias

func Sum added in v0.15.0 

func Sum(xPath interface{}, state data.Map) (interface{}, error)

Sum returns sums of matched nodes leaf value

func TrimSpace added in v0.11.1 

func TrimSpace(source interface{}, state data.Map) (interface{}, error)

TrimSpace returns trims spaces from supplied text

func Type added in v0.7.0 

func Type(source interface{}, state data.Map) (interface{}, error)

Type returns source type

func Values 

func Values(source interface{}, state data.Map) (interface{}, error)

Values returns values of the supplied map

Types

type Doc added in v0.20.3 

type Doc struct {
	Description string
	Example     string
}

Doc udf documentation

Source Files

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