Revision 447 org.gvsig.scripting.app/trunk/org.gvsig.scripting.app/org.gvsig.scripting.app.extension/src/main/resources-plugin/scripting/lib/gvsig2_1_0/vectorial/schema.py
| schema.py | ||
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from org.gvsig.fmap.dal.feature.impl import DefaultFeatureType as JSchema |
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from org.gvsig.fmap.dal.feature.impl import DefaultEditableFeatureType as JEditableSchema |
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from org.gvsig.fmap.dal import DataTypes |
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from org.gvsig.app import ApplicationLocator |
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class Schema(JSchema): |
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""" |
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Stores data properties definition. Represents gvSIG FeatureType |
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Stores the definition of the attributes of a feature store. |
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This definition es read-only. If need to modify get a editable |
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copy of this with getEditable. |
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Extends the `java FeatureType`_ class. |
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.. _`java FeatureType` : FIXME_URL |
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""" |
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@staticmethod |
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def __getitem__(self, name): |
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return self.getAttributeDescriptor(name) |
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@staticmethod |
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def __iter__(self): |
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return iter(self.getAttributeDescriptors()) |
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@staticmethod |
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def __len__(self): |
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return len(self.getAttributeDescriptors()) |
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@staticmethod |
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def get(self, name, default=None): |
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""" |
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Returns a feature attribute descriptor that contains information about |
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one feature attribute, such as its name, data type or precision. |
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:parameters: |
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name : string |
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name of the attribute of the feature |
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default : object |
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default value to return when no attribute of name exists in the feature. |
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Default value is None. |
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:return: |
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The FeatureAttributeDescriptor requested |
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:returntype: |
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FeatureAttributeDescriptor_ |
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.. _FeatureAttributeDescriptor : FIXME_URL |
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""" |
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x = self.getAttributeDescriptor(name) |
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if x == None: |
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return default |
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return x |
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@staticmethod |
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def getAttrNames(self): |
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""" |
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Returns a list with name of attributes in the schema |
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:return: |
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The names of the attributes |
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:returntype: |
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string |
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""" |
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if not self.getAttributeDescriptors(): |
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return None |
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return [attr.getName() for attr in self.getAttributeDescriptors()] |
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@staticmethod |
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def __call__(self): |
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""" |
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Return the java object represented by this object. |
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This method is for compatibility with scripting API of gvSIG 2.0 |
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:ReturnType: |
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Schema |
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:deprecated: |
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With gvSIG 2.1 the call this method isn't necesary |
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""" |
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return self |
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class EditableSchema(JEditableSchema): |
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""" |
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Stores the definition of the attributes of a feature store. |
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This is an editable definition of the schema. |
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Extends the `java EditableFeatureType`_ class. |
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.. _`java EditableFeatureType` : FIXME_URL |
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""" |
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@staticmethod |
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def append(self, name, type, size=None, default=None, precision=4): |
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"""Adds new property to feature properties definition. If error occurs |
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raises RuntimeError. |
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:param name: Feature property name |
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:type name: String |
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:param type: Feature property type |
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:type name: String |
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:param size: Feature property size |
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:type size: int |
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:param default: Feature property default value |
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:return: new atribute |
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""" |
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if not isinstance(self._javaobj, EditableFeatureType): |
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self.modify() |
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Adds a new attribute to the feature definition. |
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:parameters: |
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name : string |
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name of the new attribute |
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type : int, string, DataType_ |
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the type of the new attribute |
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size : int |
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if the attribute is a string, length of this |
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default : object |
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default value for the new attribute |
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precision : int |
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the precision for types double and float. |
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:return: |
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the new FeatureAttributeDescriptor |
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:returntype: |
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EditableFeatureAttributeDescriptor_ |
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.. _EditableFeatureAttributeDescriptor : FIXME_URL |
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.. _DataType : FIXME_URL |
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""" |
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application = ApplicationLocator.getManager() |
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datamanager = application.getDataManager() |
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dataTypes = application.getDataTypesManager() |
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if isinstance(type, str): |
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try: |
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application = ApplicationLocator.getManager() |
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datamanager = application.getDataManager() |
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dataTypes = application.getDataTypesManager() |
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type = dataTypes.getType(type) #dataType constant value from string |
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type = dataTypes.getType(type) # dataType constant value from string |
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type = dataTypes.get(type) |
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except: |
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raise RuntimeError( |
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"Feature Property Data type (%s) is not valid. name=%s, type=%s, size=%s, default=%s)" % ( |
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default |
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) |
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) |
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if isinstance(type, int): |
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elif isinstance(type, int):
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try: |
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type = dataTypes.get(type) |
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except: |
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default |
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) |
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) |
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elif !isinstance(type,DataType): |
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raise RuntimeError( |
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"Data type (%s) is not valid. name=%s, type=%s, size=%s, default=%s)" % ( |
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type, |
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name, |
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type, |
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size, |
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default |
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) |
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) |
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attribute = self.add(name, type.getType()) |
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if size != None: |
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return attribute |
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def __getitem__(self, name): |
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return self.getAttributeDescriptor(name) |
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def get(self, name, default=None): |
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"""Returns a feature attribute descriptor that contains information about |
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one feature attribute, such as its name, data type or precision. |
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:param name: Attribute name |
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:type name: string |
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:param default: Value to return if no attribute name found. |
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:return: AttributeDescriptor |
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@staticmethod |
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def __call__(self): |
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""" |
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x = self.getAttributeDescriptor(name) |
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if x == None: |
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return default |
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return x |
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def getAttrNames(self): |
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"""Returns a list with attributes names""" |
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if not self.getAttributeDescriptors(): |
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return None |
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return [attr.getName() for attr in self.getAttributeDescriptors()] |
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Return the java object represented by this object. |
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This method is for compatibility with scripting API of gvSIG 2.0 |
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def getCopy(self): |
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"""Returns a itself clone""" |
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return Schema(self().getCopy()) |
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def modify(self): |
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"""Sets edit mode""" |
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if not isinstance(self._javaobj, EditableFeatureType): |
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self.featureTypeNoEditable = self._javaobj |
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self._javaobj = self._javaobj.getEditable() |
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:ReturnType: |
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EditableSchema |
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:deprecated: |
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With gvSIG 2.1 the call this method isn't necesary |
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""" |
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return self |
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# |
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# Inject new methods in the class JSchema |
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# |
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JSchema.__call__ = Schema.__call__ |
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JSchema.__iter__ = Schema.__iter__ |
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JSchema.__len__ = Schema.__len__ |
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JSchema.get = Schema.get |
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JSchema.getAttrNames = Schema.getAttrNames |
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# |
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# Inject new methods in the class JSchema |
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# |
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JEditableSchema.__call__ = EditableSchema.__call__ |
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JEditableSchema.__iter__ = EditableSchema.__iter__ |
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JEditableSchema.__len__ = EditableSchema.__len__ |
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JEditableSchema.get = EditableSchema.get |
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JEditableSchema.getAttrNames = EditableSchema.getAttrNames |
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JEditableSchema.append = EditableSchema.append |
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Also available in: Unified diff