ToChar (Speedment - Runtime - Compute 3.1.15 API)

Type Parameters:

T - type to extract from

All Superinterfaces:

Comparator<T>, Expression<T>, HasAsDouble<T>, HasAsInt<T>, HasAsLong<T>, HasCase<T,ToChar<T>>, HasCompare<T>, HasCompose<T>, HasHash<T>, HasMap<T,com.speedment.common.function.CharUnaryOperator,ToChar<T>>, com.speedment.common.function.ToCharFunction<T>

All Known Subinterfaces:

ToCharOrElse<T>, ToCharOrElseGet<T>, ToCharOrThrow<T>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface ToChar<T>
extends Expression<T>, com.speedment.common.function.ToCharFunction<T>, HasAsDouble<T>, HasAsInt<T>, HasAsLong<T>, HasMap<T,com.speedment.common.function.CharUnaryOperator,ToChar<T>>, HasCase<T,ToChar<T>>, HasHash<T>, HasCompare<T>, HasCompose<T>
```
Expression that given an entity returns a char value. This expression can be implemented using a lambda, or it can be a result of another operation. It has additional methods for operating on it.

Since:

3.1.0

Author:

Emil Forslund

See Also:

ToCharFunction

Method Summary

All Methods Static Methods Instance Methods Default Methods
Modifier and Type	Method and Description
`default ToDouble<T>`	`asDouble()` Returns an expression that casts the result of the current expression into a `double`.
`default ToInt<T>`	`asInt()` Returns an expression that casts the result of the current expression into an `int`.
`default ToLong<T>`	`asLong()` Returns an expression that casts the result of the current expression into a `long`.
`default int`	`compare(T first, T second)`
`default <V> ToCharNullable<V>`	`compose(Function<? super V,? extends T> before)` Returns a composed expression that first applies the `before` function to its input, and then applies this function to the result.
`default ExpressionType`	`expressionType()` Returns the expression type of this expression.
`default long`	`hash(T object)` Hash the specified object into a 64-bit hash.
`default ToChar<T>`	`map(com.speedment.common.function.CharUnaryOperator operator)` Returns an expression for the value of this expression mapped using the specified mapping function.
`static <T> ToChar<T>`	`of(com.speedment.common.function.ToCharFunction<T> lambda)` Returns a typed `ToChar<T>` using the provided `lambda`.
`default ToChar<T>`	`toLowerCase()` Returns an expression that is equivalent to this expression, except that results are always in lower-case letters.
`default ToChar<T>`	`toUpperCase()` Returns an expression that is equivalent to this expression, except that results are always in upper-case letters.

Methods inherited from interface com.speedment.common.function.ToCharFunction
applyAsChar

Methods inherited from interface java.util.Comparator
comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

- Method Detail
  - of
```
static <T> ToChar<T> of(com.speedment.common.function.ToCharFunction<T> lambda)
```
    Returns a typed ToChar<T> using the provided lambda.
    
    Type Parameters:
    
    T - type to extract from
    
    Parameters:
    
    lambda - to convert
    
    Returns:
    
    a typed ToChar<T> using the provided lambda
    
    Throws:
    
    NullPointerException - if the provided lambda is null
  - expressionType
```
default ExpressionType expressionType()
```
    Description copied from interface: Expression
    
    Returns the expression type of this expression. It should be safe to cast this instance into the corresponding interface.
    
    Specified by:
    
    expressionType in interface Expression<T>
    
    Returns:
    
    the expression type
  - asDouble
```
default ToDouble<T> asDouble()
```
    Description copied from interface: HasAsDouble
    
    Returns an expression that casts the result of the current expression into a double.
    
    Specified by:
    
    asDouble in interface HasAsDouble<T>
    
    Returns:
    
    the casted expression
  - asInt
```
default ToInt<T> asInt()
```
    Description copied from interface: HasAsInt
    
    Returns an expression that casts the result of the current expression into an int.
    
    Specified by:
    
    asInt in interface HasAsInt<T>
    
    Returns:
    
    the casted expression
  - asLong
```
default ToLong<T> asLong()
```
    Description copied from interface: HasAsLong
    
    Returns an expression that casts the result of the current expression into a long.
    
    Specified by:
    
    asLong in interface HasAsLong<T>
    
    Returns:
    
    the casted expression
  - map
```
default ToChar<T> map(com.speedment.common.function.CharUnaryOperator operator)
```
    Description copied from interface: HasMap
    
    Returns an expression for the value of this expression mapped using the specified mapping function. The input type remains the same.
    
    Specified by:
    
    map in interface HasMap<T,com.speedment.common.function.CharUnaryOperator,ToChar<T>>
    
    Parameters:
    
    operator - the mapping function
    
    Returns:
    
    the mapped expression
  - toUpperCase
```
default ToChar<T> toUpperCase()
```
    Description copied from interface: HasCase
    
    Returns an expression that is equivalent to this expression, except that results are always in upper-case letters.
    
    Specified by:
    
    toUpperCase in interface HasCase<T,ToChar<T>>
    
    Returns:
    
    the upper case expression
  - toLowerCase
```
default ToChar<T> toLowerCase()
```
    Description copied from interface: HasCase
    
    Returns an expression that is equivalent to this expression, except that results are always in lower-case letters.
    
    Specified by:
    
    toLowerCase in interface HasCase<T,ToChar<T>>
    
    Returns:
    
    the lower case expression
  - hash
```
default long hash(T object)
```
    Description copied from interface: HasHash
    
    Hash the specified object into a 64-bit hash. If two equal objects are hashed, they must always result in the same hash. However, objects that are not equal may also result in the same hash.
    
    Specified by:
    
    hash in interface HasHash<T>
    
    Parameters:
    
    object - the object to hash
    
    Returns:
    
    the 64-bit hashcode
  - compare
```
default int compare(T first,
                    T second)
```
    Specified by:
    
    compare in interface Comparator<T>
    
    Specified by:
    
    compare in interface HasCompare<T>
  - compose
```
default <V> ToCharNullable<V> compose(Function<? super V,? extends T> before)
```
    Description copied from interface: HasCompose
    
    Returns a composed expression that first applies the before function to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Specified by:
    
    compose in interface HasCompose<T>
    
    Type Parameters:
    
    V - the type of input to the before function, and to the composed expression
    
    Parameters:
    
    before - the function to apply before this function is applied
    
    Returns:
    
    a composed function that first applies the before function and then applies this function

Interface ToChar<T>

Method Summary

Methods inherited from interface com.speedment.common.function.ToCharFunction

Methods inherited from interface java.util.Comparator

Method Detail

of

expressionType

asDouble

asInt

asLong

map

toUpperCase

toLowerCase

hash

compare

compose