esys.escript.modelframe.Link

Package esys :: Package escript :: Module modelframe :: Class Link

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Class Link

A Link makes an attribute of an object callable:

     o.object()
     o.a=8
     l=Link(o,"a")
     assert l()==8

Method Summary
	`__init__(self, target, attribute)` Creates a link to the object target.
	`__call__(self, name)` Returns the value of the attribute of the target object.
	`__repr__(self)` Returns a string representation of the link.
	`fromDom(cls, doc)` (Class method)
	`hasDefinedAttributeName(self)` Returns true if an attribute name is set.
	`setAttributeName(self, attribute)` Set a new attribute name to be collected from the target object.
	`toDom(self, document, node)` `toDom` method of Link.
	`writeXML(self, ostream)` Writes an XML representation of self to the output stream ostream.

Instance Method Details

init(self, target, attribute=None)
(Constructor)

Creates a link to the object target. If attribute is given, the link is establised to this attribute of the target. Otherwise the attribute is undefined.

call(self, name=None)
(Call operator)

Returns the value of the attribute of the target object. If the atrribute is callable then the return value of the call is returned.

repr(self)
(Representation operator)

Returns a string representation of the link.

hasDefinedAttributeName(self)

Returns true if an attribute name is set.

setAttributeName(self, attribute)

Set a new attribute name to be collected from the target object. The target object must have the attribute with name attribute.

toDom(self, document, node)

toDom method of Link. Creates a Link node and appends it to the current XML document.

writeXML(self, ostream=<epydoc.imports._DevNull instance at 0x402244cc>)

Writes an XML representation of self to the output stream ostream. If ostream is nor present the standart output stream is used. If esysheader==True the esys XML header is written

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