BooleanExpr (52°North Svalbard OData 9.2.0 API)

All Superinterfaces:

Expr, ODataExpr

All Known Implementing Classes:

BooleanBinaryExpr, BooleanUnaryExpr, ComparisonExpr, MethodCallExpr
```
public interface BooleanExpr
extends Expr
```
Interface to denote that this expression possibly evaluates to a boolean value.

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default Optional<BooleanExpr>`	`asBoolean()`	Get this expression as a boolean expression
`default boolean`	`isBoolean()`	Check if this expression is a boolean expresion.

Methods inherited from interface org.n52.svalbard.odata.core.expr.Expr
accept, asArithmetic, asBinary, asBooleanBinary, asBooleanUnary, asComparison, asGeometry, asMember, asMethodCall, asNumericValue, asTextValue, asTime, asUnary, isArithmetic, isBinary, isBooleanBinary, isBooleanUnary, isComparison, isGeometry, isMember, isMethodCall, isNumericValue, isTextValue, isTime, isUnary

Methods inherited from interface org.n52.shetland.oasis.odata.ODataExpr
toODataString

- Method Detail
  - isBoolean
```
default boolean isBoolean()
```
    Description copied from interface: Expr
    
    Check if this expression is a boolean expresion.
    
    Specified by:
    
    isBoolean in interface Expr
    
    Returns:
    
    if it is a boolean expression
  - asBoolean
```
default Optional<BooleanExpr> asBoolean()
```
    Description copied from interface: Expr
    
    Get this expression as a boolean expression
    
    Specified by:
    
    asBoolean in interface Expr
    
    Returns:
    
    the expression or Optional.empty() if the type does not match