CommonExpression (olingo-odata2-api 3.0.0-SP.23 API)

All Superinterfaces:

Visitable

All Known Subinterfaces:

BinaryExpression, FilterExpression, LiteralExpression, MemberExpression, MethodExpression, OrderByExpression, OrderExpression, PropertyExpression, UnaryExpression
```
public interface CommonExpression
extends Visitable
```
Parent class of all classes used to build the expression tree

This interface defines the default methods for all expression tree nodes

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`EdmType`	`getEdmType()`
`ExpressionKind`	`getKind()`
`String`	`getUriLiteral()`	Returns the URI literal which lead to the creation of this expression.
`CommonExpression`	`setEdmType(EdmType edmType)`	Set the edmType of this expression node

Methods inherited from interface org.apache.olingo.odata2.api.uri.expression.Visitable
accept

- Method Detail
  - getKind
```
ExpressionKind getKind()
```
    Returns:
    
    Kind of this expression
    
    See Also:
    
    ExpressionKind
  - getEdmType
```
EdmType getEdmType()
```
    Returns:
    
    The return type of the value represented with this expression. For example the getEdmType() method for an expression representing the "concat" method will return always "Edm.String".
    
    This type information is set while parsing the $filter or $orderby expressions and used to do a first validation of the expression. For calculating operators like "add, sub, mul" this type information is purely based on input and output types of the operator as defined in the OData specification. So for $filter=2 add 7 the getEdmType() method of the binary expression will return Edm.Byte and not Edm.Int16 because the parser performs no real addition.
    
    However, the application may change this type while evaluating the expression tree.
  - setEdmType
```
CommonExpression setEdmType(EdmType edmType)
```
    Set the edmType of this expression node
    
    Parameters:
    
    edmType - Type to be set
    
    Returns:
    
    A self reference for method chaining"
  - getUriLiteral
```
String getUriLiteral()
```
    Returns the URI literal which lead to the creation of this expression.
    
    Returns:
    
    URI literal