org.daisy.dotify.api.obfl

Interface ExpressionFactory

public interface ExpressionFactory

Provides a factory for expressions.

Method Summary

Modifier and Type	Method and Description
Expression	newExpression() Creates a new expression implementation.
default void	setCreatedWithSPI() Informs the implementation that it was discovered and instantiated using information collected from a file within the META-INF/services directory.

Method Detail

newExpression

Expression newExpression()

Creates a new expression implementation.

Returns:

returns a new expression implementation

setCreatedWithSPI

default void setCreatedWithSPI()

Informs the implementation that it was discovered and instantiated using information collected from a file within the META-INF/services directory. In other words, it was created using SPI (service provider interfaces).

This information, in turn, enables the implementation to use the same mechanism to set dependencies as needed.

If this information is not given, an implementation should avoid using SPIs and instead use declarative services for dependency injection as specified by OSGi. Note that this also applies to several newInstance() methods in the Java API.

The class that created an instance with SPI must call this method before putting it to use.