ExpressionPlan.Trait (druid-processing 25.0.0 API)

java.lang.Object
- java.lang.Enum<ExpressionPlan.Trait>
- - org.apache.druid.segment.virtual.ExpressionPlan.Trait

All Implemented Interfaces:

Serializable, Comparable<ExpressionPlan.Trait>

Enclosing class:

ExpressionPlan
```
public static enum ExpressionPlan.Trait
extends Enum<ExpressionPlan.Trait>
```

Enum Constant Summary

Enum Constants
Enum Constant and Description
`CONSTANT` expression has no inputs and can be optimized into a constant selector
`IDENTIFIER` expression is a simple identifier expression, do not transform
`INCOMPLETE_INPUTS` expression has inputs whose type was incomplete, such as unknown multi-valuedness, which are not explicitly used as possibly multi-valued/array inputs
`NEEDS_APPLIED` expression must be implicitly mapped across the multiple values per row of known multi-value inputs, the final output will be multi-valued
`NON_SCALAR_INPUTS` expression explicitly using multi-valued inputs as array inputs or has array inputs
`NON_SCALAR_OUTPUT` expression produces explict multi-valued output
`SINGLE_INPUT_MAPPABLE` expression has a single input, which may produce single or multi-valued output, but if so, it must be implicitly mappable (i.e.
`SINGLE_INPUT_SCALAR` expression has a single, single valued input, and is dictionary encoded if the value is a string, and does not produce non-scalar output
`UNKNOWN_INPUTS` expression has inputs whose type was unresolveable
`VECTORIZABLE` expression is vectorizable

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static ExpressionPlan.Trait`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static ExpressionPlan.Trait[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - CONSTANT
```
public static final ExpressionPlan.Trait CONSTANT
```
    expression has no inputs and can be optimized into a constant selector
  - IDENTIFIER
```
public static final ExpressionPlan.Trait IDENTIFIER
```
    expression is a simple identifier expression, do not transform
  - SINGLE_INPUT_SCALAR
```
public static final ExpressionPlan.Trait SINGLE_INPUT_SCALAR
```
    expression has a single, single valued input, and is dictionary encoded if the value is a string, and does not produce non-scalar output
  - SINGLE_INPUT_MAPPABLE
```
public static final ExpressionPlan.Trait SINGLE_INPUT_MAPPABLE
```
    expression has a single input, which may produce single or multi-valued output, but if so, it must be implicitly mappable (i.e. the expression is not treating its input as an array and does not produce non-scalar output)
  - NEEDS_APPLIED
```
public static final ExpressionPlan.Trait NEEDS_APPLIED
```
    expression must be implicitly mapped across the multiple values per row of known multi-value inputs, the final output will be multi-valued
  - UNKNOWN_INPUTS
```
public static final ExpressionPlan.Trait UNKNOWN_INPUTS
```
    expression has inputs whose type was unresolveable
  - INCOMPLETE_INPUTS
```
public static final ExpressionPlan.Trait INCOMPLETE_INPUTS
```
    expression has inputs whose type was incomplete, such as unknown multi-valuedness, which are not explicitly used as possibly multi-valued/array inputs
  - NON_SCALAR_INPUTS
```
public static final ExpressionPlan.Trait NON_SCALAR_INPUTS
```
    expression explicitly using multi-valued inputs as array inputs or has array inputs
  - NON_SCALAR_OUTPUT
```
public static final ExpressionPlan.Trait NON_SCALAR_OUTPUT
```
    expression produces explict multi-valued output
  - VECTORIZABLE
```
public static final ExpressionPlan.Trait VECTORIZABLE
```
    expression is vectorizable
- Method Detail
  - values
```
public static ExpressionPlan.Trait[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
```
for (ExpressionPlan.Trait c : ExpressionPlan.Trait.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static ExpressionPlan.Trait valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null

Enum ExpressionPlan.Trait

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

CONSTANT

IDENTIFIER

SINGLE_INPUT_SCALAR

SINGLE_INPUT_MAPPABLE

NEEDS_APPLIED

UNKNOWN_INPUTS

INCOMPLETE_INPUTS

NON_SCALAR_INPUTS

NON_SCALAR_OUTPUT

VECTORIZABLE

Method Detail

values

valueOf