Package org.cqframework.cql.elm.execution

Class Intersect

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.NaryExpression
org.cqframework.cql.elm.execution.Intersect
All Implemented Interfaces:
org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
Direct Known Subclasses:
IntersectEvaluator
public class Intersect extends NaryExpression implements org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
The Intersect operator returns the intersection of its arguments. This operator has two overloads: List Interval For the list overload, this operator returns a list with the elements that appear in both lists, using equality semantics with the exception that null elements are considered equal for the purposes of the intersection. The operator is defined with set semantics, meaning that each element will appear in the result at most once, and that there is no expectation that the order of the inputs will be preserved in the results. For the interval overload, this operator returns the interval that defines the overlapping portion of both arguments. If the arguments do not overlap, this operator returns null. If either argument is null, the result is null.

Java class for Intersect complex type.

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

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