Package org.cqframework.cql.elm.execution

Class After

java.lang.Object
org.opencds.cqf.cql.engine.elm.execution.Executable
org.cqframework.cql.elm.execution.Element
org.cqframework.cql.elm.execution.Expression
org.cqframework.cql.elm.execution.OperatorExpression
org.cqframework.cql.elm.execution.BinaryExpression
org.cqframework.cql.elm.execution.After
All Implemented Interfaces:
org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
Direct Known Subclasses:
AfterEvaluator
public class After extends BinaryExpression implements org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
The After operator is defined for Intervals, as well as Date, DateTime, and Time values. For the Interval overload, the After operator returns true if the first interval starts after the second one ends. In other words, if the starting point of the first interval is greater than the ending point of the second interval using the semantics described in the Start and End operators to determine interval boundaries. For the Date, DateTime, and Time overloads, the After operator returns true if the first datetime is after the second datetime at the specified level of precision. The comparison is performed by considering each precision in order, beginning with years (or hours for time values). If the values are the same, comparison proceeds to the next precision; if the first value is greater than the second, the result is true; if the first value is less than the second, the result is false; if either input has no value for the precision, the comparison stops and the result is null; if the specified precision has been reached, the comparison stops and the result is false. If no precision is specified, the comparison is performed beginning with years (or hours for time values) and proceeding to the finest precision specified in either input. For Date values, precision must be one of year, month, or day. For DateTime values, precision must be one of year, month, day, hour, minute, second, or millisecond. For Time values, precision must be one of hour, minute, second, or millisecond. Note specifically that due to variability in the way week numbers are determined, comparisons involving weeks are not supported. When comparing DateTime values with different timezone offsets, implementations should normalize to the timezone offset of the evaluation request timestamp, but only when the comparison precision is hours, minutes, seconds, or milliseconds. If either argument is null, the result is null.

Java class for After complex type.

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

 <complexType name="After">
   <complexContent>
     <extension base="{urn:hl7-org:elm:r1}BinaryExpression">
       <attribute name="precision" type="{urn:hl7-org:elm:r1}DateTimePrecision" />
     </extension>
   </complexContent>
 </complexType>