Description Usage Arguments See Also Examples
Constructor to instantiate Package
class.
1 | Package.load(descriptor = list(), basePath = NA, strict = FALSE)
|
descriptor |
Data package descriptor as local path, url or object. |
basePath |
Base path for all relative paths |
strict |
Strict flag to alter validation behavior.
Setting it to |
Package
,
Data Package Specifications
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | # Load local descriptor
descriptor <- system.file('extdata/dp1/datapackage.json',
package = "datapackage.r")
dataPackage <- Package.load(descriptor)
dataPackage$descriptor
# Retrieve Package Descriptor
descriptor2 <- '{"resources": [{"name": "name", "data": ["data"]}]}'
dataPackage2 <- Package.load(descriptor2)
dataPackage2$descriptor
# Expand Resource Descriptor
descriptor3 <- helpers.from.json.to.list('{"resources":
[{
"name": "name",
"data": ["data"]
}]
}')
dataPackage3 <- Package.load(descriptor3)
dataPackage3$descriptor
# Expand Tabular Resource Schema
descriptor4 <- helpers.from.json.to.list('{
"resources": [{
"name": "name",
"data": ["data"],
"profile": "tabular-data-resource",
"schema": {
"fields": [{
"name": "name"
}]
}
}]
}')
dataPackage4 <- Package.load(descriptor4)
dataPackage4$descriptor
# Expand Tabular Resource Dialect
descriptor5 <- helpers.from.json.to.list('{
"resources": [{
"name": "name",
"data": ["data"],
"profile": "tabular-data-resource",
"dialect": {
"delimiter": "custom"
}
}]
}')
dataPackage5 <- Package.load(descriptor5)
dataPackage5$descriptor
# Add, Get and Remove Package Resources
descriptor6 <- helpers.from.json.to.list(
system.file('extdata/dp1/datapackage.json',
package = "datapackage.r"))
dataPackage6 <- Package.load(descriptor6)
resource6 <- dataPackage6$addResource(
helpers.from.json.to.list('{"name": "name", "data": ["test"]}'))
dataPackage6$resources[[2]]$source
# Get resource
dataPackage6$getResource('name')
# Remove resource
dataPackage6$removeResource('name')
dataPackage6$getResource('name')
# Modify and Commit Data Package
descriptor7 <- helpers.from.json.to.list(
'{"resources": [{"name": "name", "data": ["data"]}]}')
dataPackage7 <- Package.load(descriptor7)
dataPackage7$descriptor$resources[[1]]$name <- 'modified'
## Name did not modified.
dataPackage7$resources[[1]]$name
## Should commit the changes
dataPackage7$commit() # TRUE - successful commit
dataPackage7$resources[[1]]$name
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