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https://github.com/IfcOpenShell/IfcOpenShell.git
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Add documentation for pset API module
This commit is contained in:
Dion Moult
@@ -68,9 +68,7 @@ class Usecase:
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if not application:
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return
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if not self.settings["element"].OwnerHistory:
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self.settings["element"].OwnerHistory = ifcopenshell.api.run(
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"owner.create_owner_history", self.file, **self.settings
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)
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self.settings["element"].OwnerHistory = ifcopenshell.api.run("owner.create_owner_history", self.file)
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return self.settings["element"].OwnerHistory
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if self.file.get_total_inverses(self.settings["element"].OwnerHistory) > 1:
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new = ifcopenshell.util.element.copy(self.file, self.settings["element"].OwnerHistory)
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@@ -20,11 +20,64 @@ import ifcopenshell
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class Usecase:
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def __init__(self, file, **settings):
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def __init__(self, file, product=None, name=None):
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"""Adds a new property set to a product
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Products, such as physical objects or types in IFC may have properties
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associated with them. These properties are typically simple key value
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metadata with data types. For example, a wall type may have a property
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called FireRating with a text value of "2HR". Properties are grouped
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into property sets, so that related properties are grouped together.
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If a property is assigned to a type, the property is inherited by all
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occurrences of that type. For example, a wall type with a FireRating
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property of "2HR" automatically implies that all walls of that wall type
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also have a FireRating of "2HR". It is not necessary to explictly define
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the property again for each occurrence. This also means that properties
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are typically defined on types. If the same property is defined at an
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occurrence, this overrides the property defined on the type.
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buildingSMART has come up with a long list of standardised properties
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for the most common properties required internationally. This solves the
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age-old question of "where do I store my FireRating data for walls"? The
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answer, in this case, is in the "FireRating" property with an "IfcLabel"
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data type grouped in the "Pset_WallCommon" property set. It is
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recommended to view the list of standardised buildingSMART properties
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and see if any suit your needs first. If none are appropriate, then you
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are free to create your own custom properties.
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This function adds a blank named property set. One you have a property
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set you may add properties using ifcopenshell.api.pset.edit_pset.
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See also ifcopenshell.api.pset.add_qto if you want to add quantification
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data, rather than arbitrary metadata.
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:param product: The IfcObject that you want to assign a property set to.
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:type product: ifcopenshell.entity_instance.entity_instance
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:param name: The name of the property set. Property sets that are
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standardised by buildingSMART typically have a prefix of "Pset_",
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like "Pset_WallCommon". If you create your own, you must not use
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that prefix. It is recommended to use your own prefix tailored to
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your project, company, or local government requirement.
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:type name: str
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:return: The newly created IfcPropertySet
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:rtype: ifcopenshell.entity_instance.entity_instance
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Example::
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# Let's imagine we have a new wall type.
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wall_type = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcWallType")
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# Note that this only creates and assigns an empty property set. We
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# still need to add properties into the property set. Having blank
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# property sets are invalid.
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pset = ifcopenshell.api.run("pset.add_pset", model, product=wall_type, name="Pset_WallCommon")
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# Add a fire rating property standardised by buildingSMART.
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ifcopenshell.api.run("pset.edit_pset", model, pset=pset, properties={"FireRating": "2HR"})
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"""
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self.file = file
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self.settings = {"product": None, "name": None}
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for key, value in settings.items():
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self.settings[key] = value
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self.settings = {"product": product, "name": name}
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def execute(self):
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if self.settings["product"].is_a("IfcObject") or self.settings["product"].is_a("IfcContext"):
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@@ -21,11 +21,63 @@ import ifcopenshell.api
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class Usecase:
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def __init__(self, file, **settings):
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def __init__(self, file, product=None, name=None):
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"""Adds a new quantity set to a product
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Products, such as physical objects or types in IFC may have quantities
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associated with them. These quantities are typically simple key value
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metadata with data types. For example, a wall type may have a quantity
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called NetSideArea with a area value of "4.2". Quantities are grouped
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into quantity sets, so that related quantities are grouped together.
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Quantities can only be assigned to occurrences, not types.
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Quantities are similar to, but different from properties in that they
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may store a method of measurement or formula. Quantities may also have
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parametric relationships to other calculated values, such as cost
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schedules, resource utilisation, or construction task durations.
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buildingSMART has come up with a long list of standardised quantities
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for the most common quantities required internationally. This solves the
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age-old question of "what's the standard way of storing quantity
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take-off data"? It is recommended to view the list of standardised
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buildingSMART quantities and see if any suit your needs first. If none
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are appropriate, then you are free to create your own custom quantities.
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This function adds a blank named quantity set. One you have a quantity
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set you may add quantities using ifcopenshell.api.pset.edit_qto.
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See also ifcopenshell.api.pset.add_qto if you want to arbitrary
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metadata, rather than quantification data.
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:param product: The IfcObject that you want to assign a quantity set to.
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:type product: ifcopenshell.entity_instance.entity_instance
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:param name: The name of the quantity set. Quantity sets that are
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standardised by buildingSMART typically have a prefix of "Qto_",
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like "Qto_WallBaseQuantities". If you create your own, you must not
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use that prefix. It is recommended to use your own prefix tailored
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to your project, company, or local government requirement.
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:type name: str
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:return: The newly created IfcElementQuantity
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:rtype: ifcopenshell.entity_instance.entity_instance
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Example::
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# Let's imagine we have a new wall.
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wall = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcWall")
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# Note that this only creates and assigns an empty quantity set. We
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# still need to add quantities into the property set. Having blank
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# quantity sets are invalid.
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qto = ifcopenshell.api.run("pset.add_qto", model, product=wall_type, name="Qto_WallBaseQuantities")
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# Add a side area property standardised by buildingSMART. This
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# allows quantity take-off to occur, even though no geometry has
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# even been modelled!
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ifcopenshell.api.run("pset.edit_qto", model, qto=qto, properties={"NetSideArea": 4.2})
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"""
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self.file = file
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self.settings = {"product": None, "name": None}
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for key, value in settings.items():
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self.settings[key] = value
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self.settings = {"product": product, "name": name}
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def execute(self):
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if self.settings["product"].is_a("IfcObject") or self.settings["product"].is_a("IfcContext"):
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@@ -21,11 +21,140 @@ import ifcopenshell.util.pset
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class Usecase:
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def __init__(self, file, **settings):
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def __init__(self, file, pset=None, name=None, properties=None, pset_template=None, should_purge=False):
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"""Edits a property set and its properties
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At its simplest usage, this may be used to edit the name of a property
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set. It may also be used to add, edit, or remove properties, either
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arbitrarily or using a property set template.
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A list of properties are provided as a dictionary, where the keys are
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property names, and values are property values. Keys that don't already
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exist are interpreted as properties to be added. Keys that already exist
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are interpreted as properties to be edited. A "None" value may specify a
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property to be deleted.
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Properties must have a data type. There are lots of data types in IFCs,
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not just simple unitless data types like integers, booleans, text, but
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also distinguishing between types of text, like labels versus
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descriptive text. There are also lots of unit-based data types like
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areas, volumes, lengths, power, density, flow rates, pressure, etc.
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To ensure the appropriate data type is used for properties, a property
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set template may be used. These can be seen as "property
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specifications". A default selection is provided by buildingSMART, so
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that all buildingSMART defined standard properties have exactly the same
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data types and exactly the right property names without fear of invalid
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data or typos. The built-in buildingSMART templates are always loaded.
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However, you may also specify your own templates. If you try to add a
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non-standard property that does not exist in either your own template or
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in the built-in buildingSMART template, then you have the responsibility
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to ensure that data types are always consistent and correct.
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:param pset: The IfcPropertySet to edit.
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:type pset: ifcopenshell.entity_instance.entity_instance
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:param name: A new name for the property set. If no name is specified,
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the property set name is not changed.
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:type name: str, optional
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:param properties: A dictionary of properties. The keys must be a string
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of the name of the property. The data type of the value will be
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determined by the property set template. If no property set
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template is found, the data types of the Python values will
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influence the IFC data type of the property. String values will
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become IfcLabel, float values will become IfcReal, booleans will
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become IfcBoolean, and integers will become IfcInteger. If more
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control is desired, you may explicitly specify IFC data objects
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directly.
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:type properties: dict
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:param pset_template: If a property set template is provided, this will
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be used to determine data types. If no user-defined template is
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provided, the built-in buildingSMART templates will be loaded.
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:type pset_template: ifcopenshell.entity_instance.entity_instance
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:param should_purge: If left as False, properties set to None will be
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left as None but not removed. If set to true, properties set to None
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will actually be removed.
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:type should_purge: bool, optional
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:return: None
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:rtype: None
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Example::
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# Let's imagine we have a new wall type.
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wall_type = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcWallType")
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# This is a standard buildingSMART property set.
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pset = ifcopenshell.api.run("pset.add_pset", model, product=wall_type, name="Pset_WallCommon")
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# In this scenario, we don't specify any pset_template because it is
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# part of the built-in buildingSMART templates, and so the
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# FireRating will automatically be an IfcLabel, and the thermal
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# transmittance value will automatically be an
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# IfcThermalTransmittanceMeasure. Neither of these properties exist
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# yet, so they will be created.
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ifcopenshell.api.run("pset.edit_pset", model,
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pset=pset, properties={"FireRating": "2HR", "ThermalTransmittance": 42.3})
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# We can edit existing properties. In this case, "FireRating" is
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# edited from "2HR" to "1HR". Combustible is new, and will be added.
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# The existing "ThermalTransmittance" property will be left
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# unchanged.
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ifcopenshell.api.run("pset.edit_pset", model,
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pset=pset, properties={"FireRating": "1HR", "Combustible": False})
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# Setting to None will change the value but not delete the property.
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ifcopenshell.api.run("pset.edit_pset", model, pset=pset, properties={"Combustible": None})
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# If you actually want to delete the property, enable purging.
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ifcopenshell.api.run("pset.edit_pset", model, pset=pset,
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properties={"Combustible": None}, should_purge=True)
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# What if we wanted to manage our own properties? Let's create our
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# own "Company Standard" property set templates. Notice how we
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# prefix our property set with "Foo_", if our company name was "Foo"
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# this would make sense.
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pset_template = ifcopenshell.api.run("pset_template.add_pset_template", model)
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ifcopenshell.api.run("pset_template.edit_pset_template", model, attributes={"Name": "Foo_Bar"})
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# Let's imagine we want all model authors to specify two properties,
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# one being a length measurement and another being a boolean.
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prop1 = ifcopenshell.api.run("pset_template.add_prop_template", model, pset_template=pset_template)
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ifcopenshell.api.run("pset_template.edit_prop_template", model,
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prop_template=prop1, attributes={"Name": "DemoA", "PrimaryMeasureType": "IfcLengthMeasure"})
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prop2 = ifcopenshell.api.run("pset_template.add_prop_template", model, pset_template=pset_template)
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ifcopenshell.api.run("pset_template.edit_prop_template", model,
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prop_template=prop2, attributes={"Name": "DemoB", "PrimaryMeasureType": "IfcBoolean"})
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# Now we can use our property set template to add our properties,
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# and the data types will always match our template.
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pset = ifcopenshell.api.run("pset.add_pset", model, product=wall_type, name="Foo_Bar")
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ifcopenshell.api.run("pset.edit_pset", model,
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pset=pset, properties={"DemoA": 42.3, "DemoB": True}, pset_template=pset_template)
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# Here's a third scenario where we want to add arbitrary properties
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# that are not standardised by anything, not even our own custom
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# templates.
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pset = ifcopenshell.api.run("pset.add_pset", model, product=wall_type, name="Custom_Pset")
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ifcopenshell.api.run("pset.edit_pset", model,
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pset=pset, properties={
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# Basic Python data types are mapped to a sensible default
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"SomeLabel": "Foo",
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"SomeNumber": 12.3,
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# But we can always specify exactly what we're after too
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"ExplicitLength": model.createIfcLengthMeasure(42.3)
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})
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# Editing existing properties will retain their current data types
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# if possible. So this will still be a length measure.
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ifcopenshell.api.run("pset.edit_pset", model, pset=pset, properties={"ExplicitLength": 12.3})
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"""
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self.file = file
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self.settings = {"pset": None, "name": None, "properties": {}, "pset_template": None}
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for key, value in settings.items():
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self.settings[key] = value
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self.settings = {
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"pset": pset,
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"name": name,
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"properties": properties or {},
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"pset_template": pset_template,
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"should_purge": should_purge,
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}
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def execute(self):
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self.update_pset_name()
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@@ -46,8 +175,8 @@ class Usecase:
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self.psetqto = ifcopenshell.util.pset.get_template("IFC4")
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self.pset_template = self.psetqto.get_by_name(self.settings["pset"].Name)
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#TODO - Add support for changing property types?
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# For example - IfcPropertyEnumeratedValue to
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# TODO - Add support for changing property types?
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# For example - IfcPropertyEnumeratedValue to
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# IfcPropertySingleValue. Or maybe the user should
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# just delete the property first? - vulevukusej
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def update_existing_properties(self):
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@@ -56,7 +185,7 @@ class Usecase:
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self.update_existing_enum(prop)
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else:
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self.update_existing_property(prop)
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def update_existing_enum(self, prop):
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if prop.Name not in self.settings["properties"]:
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return
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@@ -64,26 +193,35 @@ class Usecase:
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if isinstance(value, list):
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sel_vals = []
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for val in value:
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primary_measure_type = prop.EnumerationReference.EnumerationValues[0].is_a() #Only need the first enum type since all enums are of the same type
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primary_measure_type = prop.EnumerationReference.EnumerationValues[
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0
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].is_a() # Only need the first enum type since all enums are of the same type
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ifc_val = self.file.create_entity(primary_measure_type, val)
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sel_vals.append(ifc_val)
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prop.EnumerationValues = tuple(sel_vals)
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else:
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if value.EnumerationReference.EnumerationValues == ():
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if self.settings["should_purge"]:
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del self.settings["properties"][prop.Name]
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self.file.remove(prop)
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return
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prop.EnumerationReference.EnumerationValues = ()
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prop.EnumerationValues = ()
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elif isinstance(value, ifcopenshell.entity_instance):
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prop.EnumerationReference.EnumerationValues = value.EnumerationReference.EnumerationValues
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prop.EnumerationValues = value.EnumerationValues
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del self.settings["properties"][prop.Name]
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def update_existing_property(self, prop):
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def update_existing_property(self, prop):
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if prop.Name not in self.settings["properties"]:
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return
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value = self.settings["properties"][prop.Name]
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if value is None:
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if self.settings["should_purge"]:
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del self.settings["properties"][prop.Name]
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self.file.remove(prop)
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return
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prop.NominalValue = None
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elif isinstance(value, ifcopenshell.entity_instance):
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prop.NominalValue = value
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@@ -103,7 +241,7 @@ class Usecase:
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if isinstance(value, ifcopenshell.entity_instance):
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if value.is_a(True) == "IFC4.IfcPropertyEnumeratedValue":
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properties.append(value)
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continue
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continue
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else:
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properties.append(
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self.file.create_entity(
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@@ -111,21 +249,22 @@ class Usecase:
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**{"Name": name, "NominalValue": value},
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)
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)
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#TODO-The following "elif" is temporary code, will need to refactor at some point - vulevukusej
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# TODO-The following "elif" is temporary code, will need to refactor at some point - vulevukusej
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elif isinstance(value, list):
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for pset_template in self.settings["pset_template"].HasPropertyTemplates:
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if pset_template.Name == name:
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prop_enum = self.file.create_entity(
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"IFCPROPERTYENUMERATION",
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Name=name,
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EnumerationValues=pset_template.Enumerators.EnumerationValues
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EnumerationValues=pset_template.Enumerators.EnumerationValues,
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)
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prop_enum_value = self.file.create_entity(
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"IFCPROPERTYENUMERATEDVALUE",
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Name=name,
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EnumerationValues=tuple(self.file.create_entity(
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pset_template.PrimaryMeasureType, v) for v in value),
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EnumerationReference=prop_enum
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EnumerationValues=tuple(
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self.file.create_entity(pset_template.PrimaryMeasureType, v) for v in value
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),
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EnumerationReference=prop_enum,
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)
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properties.append(prop_enum_value)
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continue
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@@ -133,7 +272,7 @@ class Usecase:
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primary_measure_type = self.get_primary_measure_type(name, new_value=value)
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value = self.cast_value_to_primary_measure_type(value, primary_measure_type)
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nominal_value = self.file.create_entity(primary_measure_type, value)
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properties.append(
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self.file.create_entity(
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"IfcPropertySingleValue",
|
||||
|
||||
@@ -21,11 +21,100 @@ import ifcopenshell.util.pset
|
||||
|
||||
|
||||
class Usecase:
|
||||
def __init__(self, file, **settings):
|
||||
def __init__(self, file, qto=None, name=None, properties=None, pset_template=None):
|
||||
"""Edits a quantity set and its quantities
|
||||
|
||||
At its simplest usage, this may be used to edit the name of a quantity
|
||||
set. It may also be used to add, edit, or remove quantities.
|
||||
|
||||
See ifcopenshell.api.pset.edit_pset for documentation on how this is
|
||||
intended to be used.
|
||||
|
||||
One major difference is that quantities set to None are always purged.
|
||||
It is not allowed to have None quantities in IFC.
|
||||
|
||||
:param qto: The IfcElementQuantity to edit.
|
||||
:type qto: ifcopenshell.entity_instance.entity_instance
|
||||
:param name: A new name for the quantity set. If no name is specified,
|
||||
the quantity set name is not changed.
|
||||
:type name: str, optional
|
||||
:param properties: A dictionary of properties. The keys must be a string
|
||||
of the name of the quantity. The data type of the value will be
|
||||
determined by the quantity set template. If no quantity set
|
||||
template is found, the data types of the Python values will
|
||||
influence the IFC data type of the quantity. String values will
|
||||
become IfcLabel, float values will become IfcReal, booleans will
|
||||
become IfcBoolean, and integers will become IfcInteger. If more
|
||||
control is desired, you may explicitly specify IFC data objects
|
||||
directly.
|
||||
:type properties: dict
|
||||
:param pset_template: If a quantity set template is provided, this will
|
||||
be used to determine data types. If no user-defined template is
|
||||
provided, the built-in buildingSMART templates will be loaded.
|
||||
:type pset_template: ifcopenshell.entity_instance.entity_instance
|
||||
:return: None
|
||||
:rtype: None
|
||||
|
||||
Example::
|
||||
|
||||
# Let's imagine we have a new wall type.
|
||||
wall = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcWall")
|
||||
|
||||
# This is a standard buildingSMART property set.
|
||||
qto = ifcopenshell.api.run("pset.add_qto", model, product=wall, name="Qto_WallBaseQuantities")
|
||||
|
||||
# In this scenario, we don't specify any pset_template because it is
|
||||
# part of the built-in buildingSMART templates, and so the Length
|
||||
# will automatically be an IfcLengthMeasure, and the NetVolume will
|
||||
# automatically be an IfcVolumeMeasure. Neither of these properties
|
||||
# exist yet, so they will be created.
|
||||
ifcopenshell.api.run("pset.edit_qto", model, qto=qto, properties={"Length": 12, "NetVolume": 7.2})
|
||||
|
||||
# Setting to None will delete the quantity.
|
||||
ifcopenshell.api.run("pset.edit_qto", model, qto=qto, properties={"Length": None})
|
||||
|
||||
# What if we wanted to manage our own properties? Let's create our
|
||||
# own "Company Standard" property set templates. Notice how we
|
||||
# prefix our property set with "Foo_", if our company name was "Foo"
|
||||
# this would make sense. In this example, we say that our template
|
||||
# only applies to walls and is for quantities.
|
||||
pset_template = ifcopenshell.api.run("pset_template.add_pset_template", model)
|
||||
ifcopenshell.api.run("pset_template.edit_pset_template", model,
|
||||
attributes={
|
||||
"Name": "Foo_Wall", "TemplateType": "QTO_OCCURRENCEDRIVEN", "ApplicableEntity": "IfcWall"
|
||||
})
|
||||
|
||||
# Let's imagine we want all model authors to specify a length
|
||||
# measurement for the portion of a wall that is overhanging.
|
||||
prop = ifcopenshell.api.run("pset_template.add_prop_template", model, pset_template=pset_template)
|
||||
ifcopenshell.api.run("pset_template.edit_prop_template", model,
|
||||
prop_template=prop, attributes={
|
||||
"Name": "OverhangLength", "TemplateType": "Q_LENGTH", "PrimaryMeasureType": "IfcLengthMeasure"
|
||||
})
|
||||
|
||||
# Now we can use our property set template to add our properties,
|
||||
# and the data types will always match our template.
|
||||
qto = ifcopenshell.api.run("pset.add_qto", model, product=wall, name="Foo_Wall")
|
||||
ifcopenshell.api.run("pset.edit_qto", model,
|
||||
qto=qto, properties={"OverhangLength": 42.3}, pset_template=pset_template)
|
||||
|
||||
# Here's a third scenario where we want to add arbitrary quantities
|
||||
# that are not standardised by anything, not even our own custom
|
||||
# templates.
|
||||
qto = ifcopenshell.api.run("pset.add_qto", model, product=wall, name="Custom_Qto")
|
||||
ifcopenshell.api.run("pset.edit_qto", model,
|
||||
qto=qto, properties={
|
||||
"SomeLength": model.createIfcLengthMeasure(42.3),
|
||||
"SomeArea": model.createIfcAreaMeasure(21.0)
|
||||
})
|
||||
|
||||
# Editing existing quantities will retain their current data types
|
||||
# if possible. So this will still be a length measure.
|
||||
ifcopenshell.api.run("pset.edit_qto", model, qto=qto, properties={"SomeLength": 12.3})
|
||||
"""
|
||||
|
||||
self.file = file
|
||||
self.settings = {"qto": None, "name": None, "properties": {}}
|
||||
for key, value in settings.items():
|
||||
self.settings[key] = value
|
||||
self.settings = {"qto": qto, "name": name, "properties": properties or {}, "pset_template": pset_template}
|
||||
|
||||
def execute(self):
|
||||
self.qto_idx = 5
|
||||
@@ -43,9 +132,12 @@ class Usecase:
|
||||
self.settings["qto"].Name = self.settings["name"]
|
||||
|
||||
def load_qto_template(self):
|
||||
# TODO: add IFC2X3 PsetQto template support
|
||||
self.psetqto = ifcopenshell.util.pset.get_template("IFC4")
|
||||
self.qto_template = self.psetqto.get_by_name(self.settings["qto"].Name)
|
||||
if self.settings["pset_template"]:
|
||||
self.pset_template = self.settings["pset_template"]
|
||||
else:
|
||||
# TODO: add IFC2X3 PsetQto template support
|
||||
self.psetqto = ifcopenshell.util.pset.get_template("IFC4")
|
||||
self.qto_template = self.psetqto.get_by_name(self.settings["qto"].Name)
|
||||
|
||||
def update_existing_properties(self):
|
||||
for prop in self.settings["qto"][self.qto_idx] or []:
|
||||
|
||||
@@ -18,11 +18,29 @@
|
||||
|
||||
|
||||
class Usecase:
|
||||
def __init__(self, file, **settings):
|
||||
def __init__(self, file, product=None, pset=None):
|
||||
"""Removes a property set from a product
|
||||
|
||||
All properties that are part of this property set are also removed.
|
||||
|
||||
:param product: The IfcObject to remove the property set from.
|
||||
:type product: ifcopenshell.entity_instance.entity_instance
|
||||
:param pset: The IfcPropertySet or IfcElementQuantity to remove.
|
||||
:type pset: ifcopenshell.entity_instance.entity_instance
|
||||
:return: None
|
||||
:rtype: None
|
||||
|
||||
Example::
|
||||
|
||||
# Let's imagine we have a new wall type with a property set.
|
||||
wall_type = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcWallType")
|
||||
pset = ifcopenshell.api.run("pset.add_pset", model, product=wall_type, name="Pset_WallCommon")
|
||||
|
||||
# Remove it!
|
||||
ifcopenshell.api.run("pset.remove_pset", model, product=wall_type, pset=pset)
|
||||
"""
|
||||
self.file = file
|
||||
self.settings = {"product": None, "pset": None}
|
||||
for key, value in settings.items():
|
||||
self.settings[key] = value
|
||||
self.settings = {"product": product, "pset": pset}
|
||||
|
||||
def execute(self):
|
||||
to_purge = []
|
||||
|
||||
Reference in New Issue
Block a user