Package qm :: Module fields

Module fields

A 'Field' determines how data is displayed and stored.

A 'Field' is a component of a data structure. Every 'Field' has a type. For example, an 'IntegerField' stores a signed integer while a 'TextField' stores a string.

The value of a 'Field' can be represented as HTML (for display in the GUI), or as XML (when written to persistent storage). Every 'Field' can create an HTML form that can be used by the user to update the value of the 'Field'.

Every 'Extension' class has a set of arguments composed of 'Field'. An instance of that 'Extension' class can be constructed by providing a value for each 'Field' object. The GUI can display the 'Extension' object by rendering each of the 'Field' values as HTML. The user can change the value of a 'Field' in the GUI, and then write the 'Extension' object to persistent storage.

Additional derived classes of 'Field' can be created for use in domain-specific situations. For example, the QMTest 'Test' class defines a derived class which allows the user to select from among a set of test names.

Classes

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Field
A 'Field' is a named, typed component of a data structure.

IntegerField
An 'IntegerField' stores an 'int' or 'long' object.

TextField
A field that contains text.

TupleField
A 'TupleField' contains zero or more other 'Field' objects.

DictionaryField
A 'DictionaryField' maps keys to values.

SetField
A field containing zero or more instances of some other field.

UploadAttachmentPage
DTML context for generating upload-attachment.dtml.

AttachmentField
A field containing a file attachment.

ChoiceField
A 'ChoiceField' allows choosing one of several values.

EnumerationField
A field that contains an enumeral value.

BooleanField
A field containing a boolean value.

TimeField
A field containing a date and time.

PythonField
A 'PythonField' stores a Python value.

Variables

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__package__ = 'qm'