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from map import Map |
from map import Map |
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from data import ShapefileStore |
from data import ShapefileStore |
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|
|
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from transientdb import TransientDatabase |
from transientdb import TransientDatabase, AutoTransientTable |
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|
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class AutoRemoveFile: |
class AutoRemoveFile: |
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|
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if store is not weakref] |
if store is not weakref] |
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|
|
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def Tables(self): |
def Tables(self): |
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"""Return a list of all table objects open in the session""" |
"""Return a list of all table objects open in the session |
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# Tables are only available from shapestores at the moment, so |
|
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# we just take them from there |
The list includes all tables that are indirectly opened through |
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return [store.Table() for store in self.ShapeStores()] |
shape stores and the tables that have been opened explicitly. |
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|
""" |
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return self.tables + [store.Table() for store in self.ShapeStores()] |
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|
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def AddTable(self, table): |
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"""Add the table to the session |
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|
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All tables associated with the session that are not implicitly |
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|
created by the OpenShapefile method (and maybe other Open* |
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|
methods in the future) have to be passed to this method to make |
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sure the session knows about it. The session keeps a reference |
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to the table. Only tables managed by the session in this way |
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should be used for layers contained in one of the session's |
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maps. |
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|
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The table parameter may be any object implementing the table |
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interface. If it's not already one of the transient tables |
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instantiate an AutoTransientTable with it and use that instead |
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of the original table (note that the AutoTransientTable keeps a |
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reference to the original table). |
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|
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Return the table object actually used by the session. |
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""" |
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if not hasattr(table, "transient_table"): |
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transient_table = AutoTransientTable(self.TransientDB(), table) |
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else: |
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transient_table = table |
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self.tables.append(transient_table) |
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return transient_table |
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|
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|
def RemoveTable(self, table): |
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"""Remove the table from the session. |
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|
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The table object must be a table object previously returned by |
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the AddTable method. If the table is not part of the session |
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raise a ValueError. |
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""" |
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tables = [t for t in self.tables if t is not table] |
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if len(tables) == len(self.tables): |
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raise ValueError |
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self.tables = tables |
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|
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def temp_directory(self): |
def temp_directory(self): |
| 243 |
""" |
""" |
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