ADQLOperand

All Superinterfaces:

ADQLObject

All Known Subinterfaces:

UnknownType

All Known Implementing Classes:

ADQLColumn, ADQLFunction, AreaFunction, BoxFunction, CentroidFunction, CircleFunction, Concatenation, ContainsFunction, DefaultUDF, DistanceFunction, ExtractCoord, ExtractCoordSys, GeometryFunction, GeometryFunction.GeometryValue, IntersectsFunction, MathFunction, NegativeOperand, NumericConstant, Operation, PointFunction, PolygonFunction, RegionFunction, SQLFunction, StringConstant, UserDefinedFunction, WrappedOperand
```
public interface ADQLOperand
extends ADQLObject
```
Any ADQL operand (an operation, a constant, a column name, a function, ...) must implement this interface and indicates whether it corresponds to a numeric, a string or a geometrical region value.

Version:

1.3 (10/2014)

Author:

Grégory Mantelet (CDS;ARI)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`isGeometry()`	Tell whether this operand is a geometrical region or not.
`boolean`	`isNumeric()`	Tell whether this operand is numeric or not.
`boolean`	`isString()`	Tell whether this operand is a string or not.

Methods inherited from interface adql.query.ADQLObject
adqlIterator, getCopy, getName, getPosition, toADQL

- Method Detail
  - isNumeric
```
boolean isNumeric()
```
    Tell whether this operand is numeric or not.
    
    Returns:
    
    true if this operand is numeric, false otherwise.
  - isString
```
boolean isString()
```
    Tell whether this operand is a string or not.
    
    Returns:
    
    true if this operand is a string, false otherwise.
  - isGeometry
```
boolean isGeometry()
```
    Tell whether this operand is a geometrical region or not.
    
    Returns:
    
    true if this operand is a geometry, false otherwise.
    
    Since:
    
    1.3