NestedDataExpressions.JsonKeysExprMacro (druid-processing 28.0.0 API)

java.lang.Object
- org.apache.druid.query.expression.NestedDataExpressions.JsonKeysExprMacro

All Implemented Interfaces:: ExprMacroTable.ExprMacro, NamedFunction

Enclosing class:: NestedDataExpressions

public static class NestedDataExpressions.JsonKeysExprMacro
extends Object
implements ExprMacroTable.ExprMacro

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static String NAME
- Constructor Summary
  
  Constructors
  Constructor Description
  
  JsonKeysExprMacro()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  Expr apply(List<Expr> args)
  
  String name()
  Name of the function
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface org.apache.druid.math.expr.NamedFunction
    processingFailed, validationFailed, validationFailed, validationHelperCheckAnyOfArgumentCount, validationHelperCheckArgIsLiteral, validationHelperCheckArgumentCount, validationHelperCheckArgumentCount, validationHelperCheckArgumentRange, validationHelperCheckLambaArgumentCount, validationHelperCheckMinArgumentCount, validationHelperCheckMinArgumentCount

- Field Detail
  - NAME
```
public static final String NAME
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - JsonKeysExprMacro
```
public JsonKeysExprMacro()
```
- Method Detail
  - name
```
public String name()
```
    Description copied from interface: NamedFunction
    
    Name of the function
    
    Specified by:
    
    name in interface NamedFunction
  - apply
```
public Expr apply(List<Expr> args)
```
    Specified by:
    
    apply in interface ExprMacroTable.ExprMacro