apple.foundation.enums

Class NSExpressionType

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 and 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