Package org.daisy.dotify.api.obfl
Interface ExpressionFactory
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- All Known Implementing Classes:
ExpressionFactoryImpl
public interface ExpressionFactory
Provides a factory for expressions.
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Method Summary
All Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method 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 theMETA-INF/services
directory.
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Method Detail
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newExpression
Expression newExpression()
Creates a new expression implementation.- Returns:
- returns a new expression implementation
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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.
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