NullEvaluator (engine 2.11.0 API)

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.Null
      - org.opencds.cqf.cql.engine.elm.execution.NullEvaluator

All Implemented Interfaces:

org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2
```
public class NullEvaluator
extends Null
```

- Field Summary
  - Fields inherited from class org.cqframework.cql.elm.execution.Null
    valueType
  - Fields inherited from class org.cqframework.cql.elm.execution.Element
    annotation, localId, locator, resultTypeName, resultTypeSpecifier
- Constructor Summary
  
  Constructors
  Constructor Description
  
  NullEvaluator()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  protected java.lang.Object internalEvaluate(Context context)
  - Methods inherited from class org.cqframework.cql.elm.execution.Null
    append, appendFields, equals, equals, getValueType, hashCode, hashCode, setValueType, toString, withAnnotation, withAnnotation, withLocalId, withLocator, withResultTypeName, withResultTypeSpecifier, withValueType
  - Methods inherited from class org.cqframework.cql.elm.execution.Element
    getAnnotation, getLocalId, getLocator, getResultTypeName, getResultTypeSpecifier, setLocalId, setLocator, setResultTypeName, setResultTypeSpecifier
  - Methods inherited from class org.opencds.cqf.cql.engine.elm.execution.Executable
    evaluate
  - Methods inherited from class java.lang.Object
    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - NullEvaluator
```
public NullEvaluator()
```
- Method Detail
  - internalEvaluate
```
protected java.lang.Object internalEvaluate(Context context)
```
    Overrides:
    
    internalEvaluate in class Executable