OGC Geographic Metadata

ISOAbstractObject

R Documentation

ISOAbstractObject

Description

ISOAbstractObject

Format

R6Class object.

Value

Object of R6Class for modelling an ISO Metadata Element

Static Methods

getISOStandardByPrefix(prefix): Inherit the ISO (and/or OGC) standard reference for a given standard prefix (e.g. GMD). The object returned is a data.frame containing the specification reference and title.
getISOStandard(clazz, version): Inherit the ISO (and/or OGC) standard reference for a given geometa class. The object returned is a data.frame containing the specification reference and title.
getISOClasses(extended, pretty): Get the list of classes supported by geometa. By default, extended is set to FALSE (restrained to geometa environment). If TRUE, this allows to list eventual classes loaded in your global environment and that extend geometa classes. The argument pretty gives a the list of classes and associated ISO/OGC standard information as data.frame.
getISOClassByNode(node): Inherit the ISO class matching an XML document or node
compare(metadataElement1, metadataElement2): Compares two metadata elements objects. Returns TRUE if they are equal, FALSE otherwise. The comparison of object is done by comparing the XML representation of the objects (since no R6 object comparison method seems to exist)

Super class

geometa::geometaLogger -> ISOAbstractObject

Public fields

wrap: wrap
element: element
namespace: namespace
defaults: defaults
attrs: attributes
printAttrs: attributes to print
parentAttrs: parent attributes
value: value
value_as_field: value as field?
isNull: is null?
anyElement: any element?

Methods

Public methods

ISOAbstractObject$new()
ISOAbstractObject$checkMetadataStandardCompliance()
ISOAbstractObject$stopIfMetadataStandardIsNot()
ISOAbstractObject$print()
ISOAbstractObject$decode()
ISOAbstractObject$encode()
ISOAbstractObject$validate()
ISOAbstractObject$save()
ISOAbstractObject$getNamespaceDefinition()
ISOAbstractObject$getClassName()
ISOAbstractObject$getClass()
ISOAbstractObject$wrapBaseElement()
ISOAbstractObject$setIsNull()
ISOAbstractObject$contains()
ISOAbstractObject$addListElement()
ISOAbstractObject$delListElement()
ISOAbstractObject$setAttr()
ISOAbstractObject$addFieldAttrs()
ISOAbstractObject$setId()
ISOAbstractObject$setHref()
ISOAbstractObject$setCodeList()
ISOAbstractObject$setCodeListValue()
ISOAbstractObject$setCodeSpace()
ISOAbstractObject$setValue()
ISOAbstractObject$isDocument()
ISOAbstractObject$isFieldInheritedFrom()
ISOAbstractObject$createLocalisedProperty()

Inherited methods

Method `new()`

Initializes object

Usage

ISOAbstractObject$new(
  xml = NULL,
  element = NULL,
  namespace = NULL,
  attrs = list(),
  defaults = list(),
  wrap = TRUE,
  value_as_field = FALSE
)

Arguments

xml: object of class XMLInternalNode-class
element: element name
namespace: namespace
attrs: attrs
defaults: defaults
wrap: wrap?
value_as_field: value as field?

Method `checkMetadataStandardCompliance()`

Check if object can be instantiated vs. the current metadata standard

Usage

ISOAbstractObject$checkMetadataStandardCompliance()

Method `stopIfMetadataStandardIsNot()`

Utility to stop in case a the current metadata standard does not match the one required for the code. This utility can be used to check applicability of a certain method, depending on on the current metadata standard.

Usage

ISOAbstractObject$stopIfMetadataStandardIsNot(version)

Arguments

version: version

Method `print()`

Provides a custom print output (as tree) of the current class

Usage

ISOAbstractObject$print(..., depth = 1, add_codelist_description = TRUE)

Arguments

...: args
depth: class nesting depth
add_codelist_description: Add codelist description. Default is TRUE

Method `decode()`

Decodes object from XML

Usage

ISOAbstractObject$decode(xml)

Arguments

xml: object of class XMLInternalNode-class

Method `encode()`

Encodes object as XML.

By default, namespace definition will be added to XML root (addNS = TRUE), and validation of object will be performed (validate = TRUE) prior to its XML encoding. The argument strict allows to stop the encoding in case object is not valid, with a default value set to FALSE.

The argument setSerialID is used by geometa to generate automatically serial IDs associated to XML elements, in particular for GML, default value is TRUE (recommended value).

The argument resetSerialID is used by geometa for reseting mandatory IDs associated to XML elements, such as GML objects, default value is TRUE (recommended value).

Setting inspire to TRUE (default FALSE), the metadata will be checked with the INSPIRE metadata validator (online web-service provided by INSPIRE). To check metadata with the INSPIRE metadata validator, setting an INSPIRE metadata validator is now required, and should be specified with the inspireValidator. See INSPIREMetadataValidator for more details

Usage

ISOAbstractObject$encode(
  addNS = TRUE,
  validate = TRUE,
  strict = FALSE,
  inspire = FALSE,
  inspireValidator = NULL,
  resetSerialID = TRUE,
  setSerialID = TRUE,
  encoding = "UTF-8"
)

Arguments

addNS: add namespace? Default is TRUE
validate: validate XML output against schemas?
strict: strict validation? Default is FALSE.
inspire: perform INSPIRE validation? Default is FALSE
inspireValidator: an object of class INSPIREMetadataValidator to perform INSPIRE metadata validation
resetSerialID: reset Serial ID? Default is TRUE
setSerialID: set serial ID? Default is TRUE
encoding: encoding. Default is UTF-8

Method `validate()`

Validates an XML object resulting from object encoding

Usage

ISOAbstractObject$validate(
  xml = NULL,
  strict = FALSE,
  inspire = FALSE,
  inspireValidator = NULL
)

Arguments

xml: object of class XMLInternalNode-class
strict: strict validation? If TRUE, a invalid XML will return an error
inspire: perform INSPIRE validation? Default is FALSE
inspireValidator: an object of class INSPIREMetadataValidator to perform INSPIRE metadata validation

Returns

TRUE if valid, FALSE otherwise

Method `save()`

Save XML representation resulting from $encode(...) method to a file

Usage

ISOAbstractObject$save(file, ...)

Arguments

file: file
...: any other argument from $encode(...) method

Method `getNamespaceDefinition()`

Get namespace definition

Usage

ISOAbstractObject$getNamespaceDefinition(recursive = FALSE)

Arguments

recursive: recursive namespace definitions? Default is FALSE

Returns

the list of XML namespace definitions

Method `getClassName()`

Get class name

Usage

ISOAbstractObject$getClassName(level = 1L)

Arguments

level: level of class

Returns

the class name

Method `getClass()`

Get class

Usage

ISOAbstractObject$getClass()

Returns

the corresponding class, as R6Class reference object generator

Method `wrapBaseElement()`

Wraps base element

Usage

ISOAbstractObject$wrapBaseElement(field, fieldObj)

Arguments

field: field name
fieldObj: field object
an: object of class R6Class

Method `setIsNull()`

Set Is Null

Usage

ISOAbstractObject$setIsNull(isNull, reason = "missing")

Arguments

isNull: object of class logical
reason: reason why object is Null

Method `contains()`

Util to know if a field contain a metadata element

Usage

ISOAbstractObject$contains(field, metadataElement)

Arguments

field: field name
metadataElement: metadata element

Returns

TRUE if contains, FALSE otherwise

Method `addListElement()`

Util to add an element to a list of elements for N cardinality of a target element name

Usage

ISOAbstractObject$addListElement(field, metadataElement)

Arguments

field: field
metadataElement: metadata element

Returns

TRUE if added, FALSE otherwise

Method `delListElement()`

Util to deleted an element to a list of elements for N cardinality of a target element name

Usage

ISOAbstractObject$delListElement(field, metadataElement)

Arguments

field: field
metadataElement: metadata element

Returns

TRUE if deleted, FALSE otherwise

Method `setAttr()`

Util to set an attribute

Usage

ISOAbstractObject$setAttr(attrKey, attrValue)

Arguments

attrKey: attribute key
attrValue: attribute value

Method `addFieldAttrs()`

Util add field attributes, over the XML field wrapping element instead of the element itself

Usage

ISOAbstractObject$addFieldAttrs(field, ...)

Arguments

field: field
...: list of attributes

Method `setId()`

Set id

Usage

ISOAbstractObject$setId(id, addNS = FALSE)

Arguments

id: id
addNS: add namespace definition? Default is FALSE

Method `setHref()`

Set Href attribute

Usage

ISOAbstractObject$setHref(href)

Arguments

href: href

Method `setCodeList()`

Set codelist attribute

Usage

ISOAbstractObject$setCodeList(codeList)

Arguments

codeList: codelist

Method `setCodeListValue()`

Set codelist value

Usage

ISOAbstractObject$setCodeListValue(codeListValue)

Arguments

codeListValue: codelist value

Method `setCodeSpace()`

Set codeSpace

Usage

ISOAbstractObject$setCodeSpace(codeSpace)

Arguments

codeSpace: codespace

Method `setValue()`

Set value

Usage

ISOAbstractObject$setValue(value)

Arguments

value: value

Method `isDocument()`

Util to check where object refers to a emetadata document (eg. ISOMetadata or ISOFeatureCatalogue)

Usage

ISOAbstractObject$isDocument()

Returns

TRUE if a document, FALSE otherwise

Method `isFieldInheritedFrom()`

Indicates the class a field inherits from

Usage

ISOAbstractObject$isFieldInheritedFrom(field)

Arguments

field: field

Returns

an object generator of class R6Class

Method `createLocalisedProperty()`

Creates a localised property

Usage

ISOAbstractObject$createLocalisedProperty(text, locales)

Arguments

text: text
locales: a list of localized names

Note

Abstract ISO Metadata class used internally by geometa

Author(s)

Emmanuel Blondel <emmanuel.blondel1@gmail.com>

eblondel/geometa documentation built on Oct. 10, 2024, 4:46 p.m.

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eblondel/geometa Tools for Reading and Writing ISO/OGC Geographic Metadata

ISOAbstractObject: ISOAbstractObject In eblondel/geometa: Tools for Reading and Writing ISO/OGC Geographic Metadata