Package org.cqframework.cql.elm.execution

Class AggregateExpression

  • All Implemented Interfaces:
    org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
    Direct Known Subclasses:
    Aggregate, AllTrue, AnyTrue, Avg, Count, GeometricMean, Max, Median, Min, Mode, PopulationStdDev, PopulationVariance, Product, StdDev, Sum, Variance
    public abstract class AggregateExpression
extends Expression
implements org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
    Aggregate expressions perform operations on lists of data, either directly on a list of scalars, or indirectly on a list of objects, with a reference to a property present on each object in the list. Aggregate expressions deal with missing information by excluding missing values from consideration before performing the aggregated operation. For example, in a Sum over Dose, any instance of Medication with no value for Dose would be ignored. An aggregate operation performed over an empty list is defined to return null, except as noted in the documentation for each operator (Count, AllTrue, and AnyTrue are the exceptions).

    Java class for AggregateExpression complex type.

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

     <complexType name="AggregateExpression">
   <complexContent>
     <extension base="{urn:hl7-org:elm:r1}Expression">
       <sequence>
         <element name="signature" type="{urn:hl7-org:elm:r1}TypeSpecifier" maxOccurs="unbounded" minOccurs="0"/>
         <element name="source" type="{urn:hl7-org:elm:r1}Expression"/>
       </sequence>
       <attribute name="path" type="{http://www.w3.org/2001/XMLSchema}string" />
     </extension>
   </complexContent>
 </complexType>

    • Field Detail

      • path

        protected java.lang.String path

    • Constructor Detail

      • AggregateExpression

        public AggregateExpression()

    • Method Detail

      • getSignature

        public java.util.List<TypeSpecifier> getSignature()
        Gets the value of the signature property.

        This accessor method returns a reference to the live list, not a snapshot. Therefore any modification you make to the returned list will be present inside the JAXB object. This is why there is not a set method for the signature property.

        For example, to add a new item, do as follows: 

            getSignature().add(newItem);

        Objects of the following type(s) are allowed in the list TypeSpecifier

      • getSource

        public Expression getSource()
        Gets the value of the source property.
        Returns:
        possible object is Expression

      • setSource

        public void setSource​(Expression value)
        Sets the value of the source property.
        Parameters:
        value - allowed object is Expression

      • getPath

        public java.lang.String getPath()
        Gets the value of the path property.
        Returns:
        possible object is String

      • setPath

        public void setPath​(java.lang.String value)
        Sets the value of the path property.
        Parameters:
        value - allowed object is String

      • equals

        public boolean equals​(org.jvnet.jaxb2_commons.locator.ObjectLocator thisLocator,
                      org.jvnet.jaxb2_commons.locator.ObjectLocator thatLocator,
                      java.lang.Object object,
                      org.jvnet.jaxb2_commons.lang.EqualsStrategy2 strategy)
        Specified by:
        equals in interface org.jvnet.jaxb2_commons.lang.Equals2
        Overrides:
        equals in class Expression

      • equals

        public boolean equals​(java.lang.Object object)
        Overrides:
        equals in class Expression

      • hashCode

        public int hashCode​(org.jvnet.jaxb2_commons.locator.ObjectLocator locator,
                    org.jvnet.jaxb2_commons.lang.HashCodeStrategy2 strategy)
        Specified by:
        hashCode in interface org.jvnet.jaxb2_commons.lang.HashCode2
        Overrides:
        hashCode in class Expression

      • append

        public java.lang.StringBuilder append​(org.jvnet.jaxb2_commons.locator.ObjectLocator locator,
                                      java.lang.StringBuilder buffer,
                                      org.jvnet.jaxb2_commons.lang.ToStringStrategy2 strategy)
        Specified by:
        append in interface org.jvnet.jaxb2_commons.lang.ToString2
        Overrides:
        append in class Expression

      • appendFields

        public java.lang.StringBuilder appendFields​(org.jvnet.jaxb2_commons.locator.ObjectLocator locator,
                                            java.lang.StringBuilder buffer,
                                            org.jvnet.jaxb2_commons.lang.ToStringStrategy2 strategy)
        Specified by:
        appendFields in interface org.jvnet.jaxb2_commons.lang.ToString2
        Overrides:
        appendFields in class Expression