org.azyva.dragom.model

Interface ModelFactory

public interface ModelFactory

Factory for getting a Model.

The factory design pattern is used here to allow various Model implementations, although it is expected that in most cases DefaultModelFactory in dragom-core will be adequate.

To provide a high degree of flexibility, initialization Properties are passed to the getModel method. The caller (generally an ExecContextFactory that is itself invoked by the initialization code of a tool) is free to provide Properties as required, enabling the passing of initialization data from the outside to the Model creation process.

A typical strategy is to provide a cascade of Properties initialized from various sources, such as a Properties file in the classpath, system Properties and user properties specified at tool invocation time. Such a strategy is implemented by Util.setupExecContext in dragom-core which many tools use. But ModelFactory implementations should not care about such a strategy. They should simply read properties from the provided initialization Properties.

Author:

David Raymond

Method Summary

Modifier and Type	Method and Description
Model	getModel(Properties propertiesInit) Returns a Model.

Method Detail

getModel

Model getModel(Properties propertiesInit)

Returns a Model.

Parameters:

propertiesInit - Initialization properties.

Returns:

Model.