Package org.cqframework.cql.elm.execution

Class ConvertsToQuantity

  • All Implemented Interfaces:
    org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
    Direct Known Subclasses:
    ConvertsToQuantityEvaluator
    public class ConvertsToQuantity
extends UnaryExpression
implements org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
    The ConvertsToQuantity operator returns true if the value of its argument is or can be converted to a Quantity value. The operator may be used with Integer, Decimal, Ratio, or String values. For String values, the operator accepts strings using the following format: (+|-)?#0(.0#)?('')? Meaning an optional polarity indicator, followed by any number of digits (including none) followed by at least one digit, optionally followed by a decimal point, at least one digit, and any number of additional digits, all optionally followed by a unit designator as a string literal specifying a valid UCUM unit of measure or calendar duration keyword, singular or plural. Spaces are allowed between the quantity value and the unit designator. See the Formatting Strings topic in the CQL Reference (Appendix B) of the CQL Specification for a description of formatting strings. Note that the decimal value of the quantity returned by this operator must be a valid value in the range representable for Decimal values in CQL. If the input string is not formatted correctly, or cannot be interpreted as a valid Quantity value, the result is false. For Integer, Decimal, and Ratio values, the operator simply returns true. If the argument is null, the result is null.

    Java class for ConvertsToQuantity complex type.

    The following schema fragment specifies the expected content contained within this class. 

     <complexType name="ConvertsToQuantity">
   <complexContent>
     <extension base="{urn:hl7-org:elm:r1}UnaryExpression">
     </extension>
   </complexContent>
 </complexType>