java.lang.Object
- apple.foundation.enums.NSExpressionType

```
public final class NSExpressionType
extends java.lang.Object
```
Expressions are the core of the predicate implementation. When expressionValueWithObject: is called, the expression is evaluated, and a value returned which can then be handled by an operator. Expressions can be anything from constants to method invocations. Scalars should be wrapped in appropriate NSValue classes.

Field Summary

Fields
Modifier and Type	Field	Description
`static long`	`AggregateExpressionType`
`static long`	`AnyKeyExpressionType`
`static long`	`BlockExpressionType`
`static long`	`ConditionalExpressionType`
`static long`	`ConstantValueExpressionType`	Expression that always returns the same value
`static long`	`EvaluatedObjectExpressionType`	Expression that always returns the parameter object itself
`static long`	`FunctionExpressionType`	Expression that returns the result of evaluating a symbol
`static long`	`IntersectSetExpressionType`	Expression that returns the result of doing an intersectSet: on two expressions that evaluate to flat collections (arrays or sets)
`static long`	`KeyPathExpressionType`	Expression that returns something that can be used as a key path
`static long`	`MinusSetExpressionType`	Expression that returns the result of doing a minusSet: on two expressions that evaluate to flat collections (arrays or sets)
`static long`	`SubqueryExpressionType`
`static long`	`UnionSetExpressionType`	Expression that returns the result of doing a unionSet: on two expressions that evaluate to flat collections (arrays or sets)
`static long`	`VariableExpressionType`	Expression that always returns whatever is stored at 'variable' in the bindings dictionary

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ConstantValueExpressionType
```
public static final long ConstantValueExpressionType
```
    Expression that always returns the same value
    
    See Also:
    
    Constant Field Values
  - EvaluatedObjectExpressionType
```
public static final long EvaluatedObjectExpressionType
```
    Expression that always returns the parameter object itself
    
    See Also:
    
    Constant Field Values
  - VariableExpressionType
```
public static final long VariableExpressionType
```
    Expression that always returns whatever is stored at 'variable' in the bindings dictionary
    
    See Also:
    
    Constant Field Values
  - KeyPathExpressionType
```
public static final long KeyPathExpressionType
```
    Expression that returns something that can be used as a key path
    
    See Also:
    
    Constant Field Values
  - FunctionExpressionType
```
public static final long FunctionExpressionType
```
    Expression that returns the result of evaluating a symbol
    
    See Also:
    
    Constant Field Values
  - UnionSetExpressionType
```
public static final long UnionSetExpressionType
```
    Expression that returns the result of doing a unionSet: on two expressions that evaluate to flat collections (arrays or sets)
    
    See Also:
    
    Constant Field Values
  - IntersectSetExpressionType
```
public static final long IntersectSetExpressionType
```
    Expression that returns the result of doing an intersectSet: on two expressions that evaluate to flat collections (arrays or sets)
    
    See Also:
    
    Constant Field Values
  - MinusSetExpressionType
```
public static final long MinusSetExpressionType
```
    Expression that returns the result of doing a minusSet: on two expressions that evaluate to flat collections (arrays or sets)
    
    See Also:
    
    Constant Field Values
  - SubqueryExpressionType
```
public static final long SubqueryExpressionType
```
    See Also:
    
    Constant Field Values
  - AggregateExpressionType
```
public static final long AggregateExpressionType
```
    See Also:
    
    Constant Field Values
  - AnyKeyExpressionType
```
public static final long AnyKeyExpressionType
```
    See Also:
    
    Constant Field Values
  - BlockExpressionType
```
public static final long BlockExpressionType
```
    See Also:
    
    Constant Field Values
  - ConditionalExpressionType
```
public static final long ConditionalExpressionType
```
    See Also:
    
    Constant Field Values

Class NSExpressionType

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ConstantValueExpressionType

EvaluatedObjectExpressionType

VariableExpressionType

KeyPathExpressionType

FunctionExpressionType

UnionSetExpressionType

IntersectSetExpressionType

MinusSetExpressionType

SubqueryExpressionType

AggregateExpressionType

AnyKeyExpressionType

BlockExpressionType

ConditionalExpressionType