Package org.osgi.service.repository

Interface ExpressionCombiner

@ProviderType public interface ExpressionCombiner
An ExpressionCombiner can be used to combine requirement expressions into a single complex requirement expression using the and, or and not operators.
Since:
1.1
"ThreadSafe"

  • Method Details

    • and

      AndExpression and(RequirementExpression expr1, RequirementExpression expr2)
      Combine two RequirementExpressions into a requirement expression using the and operator.
      Parameters:
      expr1 - The first requirement expression to combine into the returned requirement expression.
      expr2 - The second requirement expression to combine into the returned requirement expression
      Returns:
      An AndExpression representing an and of the specified requirement expressions.

    • and

      AndExpression and(RequirementExpression expr1, RequirementExpression expr2, RequirementExpression... moreExprs)
      Combine multiple RequirementExpressions into a requirement expression using the and operator.
      Parameters:
      expr1 - The first requirement expression to combine into the returned requirement expression.
      expr2 - The second requirement expression to combine into the returned requirement expression
      moreExprs - Optional, additional requirement expressions to combine into the returned requirement expression.
      Returns:
      An AndExpression representing an and of the specified requirement expressions.

    • identity

      IdentityExpression identity(Requirement req)
      Wrap a Requirement in an IdentityExpression. This can be useful when working with a combination of Requirements and RequirementExpresions.
      Parameters:
      req - The requirement to wrap in a requirement expression.
      Returns:
      An IdentityExpression representing the specified requirement.

    • not

      NotExpression not(RequirementExpression expr)
      Return the negation of a RequirementExpression.
      Parameters:
      expr - The requirement expression to negate.
      Returns:
      A NotExpression representing the not of the specified requirement expression.

    • or

      OrExpression or(RequirementExpression expr1, RequirementExpression expr2)
      Combine two RequirementExpressions into a requirement expression using the or operator.
      Parameters:
      expr1 - The first requirement expression to combine into the returned requirement expression.
      expr2 - The second requirement expression to combine into the returned requirement expression
      Returns:
      An OrExpression representing an or of the specified requirement expressions.

    • or

      OrExpression or(RequirementExpression expr1, RequirementExpression expr2, RequirementExpression... moreExprs)
      Combine multiple RequirementExpressions into a requirement expression using the or operator.
      Parameters:
      expr1 - The first requirement expression to combine into the returned requirement expression.
      expr2 - The second requirement expression to combine into the returned requirement expression
      moreExprs - Optional, additional requirement expressions to combine into the returned requirement expression.
      Returns:
      An OrExpression representing an or of the specified requirement expressions.