mapteksdk.data.base.data_object module

The base classes of all objects in a Project.

class DataObject(object_id, lock_type, *, rollback_on_error=False)

Bases: object

The basic unit of data in a Project.

Each object can be referenced (opened/loaded) from its ID, see ObjectID, Project.read() and Project.edit().

Parameters:

object_id (ObjectID)
lock_type (LockType)
rollback_on_error (bool)

classmethod static_type(): Return this type as stored in a Project.

property id: ObjectID[Self]

Object ID that uniquely references this object in the project.

Returns:: The unique id of this object.
Return type:: ObjectID

property closed: bool

If this object has been closed.

Attempting to read or edit a closed object will raise an ObjectClosedError. Such an error typically indicates an error in the script and should not be caught.

Examples

If the object was opened with the Project.new(), Project.edit() or Project.read() in a “with” block, this will be True until the with block is closed and False afterwards.

>>> with project.new("cad/point_set", PointSet) as point_set:
>>>     point_set.points = [[1, 2, 3], [4, 5, 6]]
>>>     print("closed?", point_set.closed)
>>> print("closed?", point_set.closed)
closed? False
closed? True

property is_read_only: bool

If this object is read-only.

This will return True if the object was open with Project.read() and False if it was open with Project.edit() or Project.new(). Attempting to edit a read-only object will raise an error.

property lock_type: LockType

Indicates whether operating in read-only or read-write mode.

Use the is_read_only property instead for checking if an object is open for reading or editing.

Returns:: The type of lock on this object. This will be LockType.ReadWrite if the object is open for editing and LockType.Read if the object is open for reading.
Return type:: LockType

final save()

Save the changes made to the object.

Generally a user does not need to call this function, because it is called automatically at the end of a with block using Project.new() or Project.edit().

Returns:: The change reasons for the operation. This depends on what changes to the object were saved. If the api_version is less than 1.9, this always returns ChangeReasons.NO_CHANGE.
Return type:: ChangeReasons

close()

Closes the object.

This should be called as soon as you are finished working with an object. To avoid needing to remember to call this function, open the object using a with block and project.read(), project.new() or project.edit(). Those functions automatically call this function at the end of the with block.

A closed object cannot be used for further reading or writing. The ID of a closed object may be queried and this can then be used to re-open the object.

property created_date: datetime

The date and time (in UTC) of when this object was created.

Returns:: The date and time the object was created. 0:0:0 1/1/1970 if the operation failed.
Return type:: datetime.datetime

property modified_date: datetime

The date and time (in UTC) of when this object was last modified.

Returns:: The date and time this object was last modified. 0:0:0 1/1/1970 if the operation failed.
Return type:: datetime.datetime

set_attribute(name: str, dtype: type[date], data: date | tuple[float, float, float])

set_attribute(name: str, dtype: type[datetime], data: datetime | str)

set_attribute(name: str, dtype: type[int], data: int)

set_attribute(name: str, dtype: type[float], data: float)

set_attribute(name: str, dtype: type[bool], data: bool)

set_attribute(name: str, dtype: type[str], data: str)

set_attribute(name: str, dtype: ObjectAttributeDataTypes, data: ObjectAttributeTypesWithAlias)

Sets the value for the object attribute with the specified name.

This will overwrite any existing attribute with the specified name.

Parameters:

name – The name of the object attribute for which the value should be set.
dtype – The type of data to assign to the attribute. This should be a type from the ctypes module or datetime.datetime or datetime.date. Passing bool is equivalent to passing ctypes.c_bool. Passing str is equivalent to passing ctypes.c_char_p. Passing int is equivalent to passing ctypes.c_int16. Passing float is equivalent to passing ctypes.c_double.
data – The value to assign to object attribute name. For dtype = datetime.datetime this can either be a datetime object or timestamp which will be passed directly to datetime.fromtimestamp(). For dtype = datetime.date this can either be a date object or a tuple of the form: (year, month, day).

Raises:

ValueError – If dtype is an unsupported type.
TypeError – If value is an inappropriate type for object attribute name.
ValueError – If name starts or ends with whitespace or is empty.
RuntimeError – If a different error occurs.

Notes

If an error occurs after adding a new object attribute or editing an existing object attribute resulting in save() not being called, the changes to the object attributes can only be undone if the application’s API version is 1.6 or greater.

Prior to mapteksdk 1.6: Adding new object attributes, or editing the values of object attributes, will not be undone if an error occurs.

Examples

Create an object attribute on an object at “target” and then read its value.

>>> import ctypes
>>> from mapteksdk.project import Project
>>> project = Project()
>>> with project.edit("target") as edit_object:
...     edit_object.set_attribute("count", ctypes.c_int16, 0)
... with project.read("target") as read_object:
...     print(read_object.get_attribute("count"))
0

attribute_names()

Returns a list containing the names of all object-level attributes.

Use this to iterate over the object attributes.

Returns:: List containing the attribute names.
Return type:: list

Examples

Iterate over all object attributes of the object stared at “target” and print their values.

>>> from mapteksdk.project import Project
>>> project = Project()
>>> with project.read("target") as read_object:
...     for name in read_object.attribute_names():
...         print(name, ":", read_object.get_attribute(name))

get_attribute(name)

Returns the value for the attribute with the specified name.

Parameters:: name (str) – The name of the object attribute to get the value for.
Returns:: The value of the object attribute name. For dtype = datetime.datetime this is an integer representing the number of milliseconds since 1st Jan 1970. For dtype = datetime.date this is a tuple of the form: (year, month, day).
Return type:: ObjectAttributeTypes
Raises:: KeyError – If there is no object attribute called name.

Warning

In the future this function may be changed to return datetime.datetime and datetime.date objects instead of the current representation for object attributes of type datetime.datetime or datetime.date.

get_attribute_type(name)

Returns the type of the attribute with the specified name.

Parameters:: name (str) – Name of the attribute whose type should be returned.
Returns:: The type of the object attribute name.
Return type:: ObjectAttributeDataTypes
Raises:: KeyError – If there is no object attribute called name.

delete_all_attributes()

Delete all object attributes attached to an object.

This only deletes object attributes and has no effect on PrimitiveAttributes.

Raises:: RuntimeError – If all attributes cannot be deleted.

delete_attribute(attribute)

Deletes a single object-level attribute.

Deleting a non-existent object attribute will not raise an error.

Parameters:: attribute (str) – Name of attribute to delete.
Returns:: True if the object attribute existed and was deleted; False if the object attribute did not exist.
Return type:: bool
Raises:: RuntimeError – If the attribute cannot be deleted.