Package io.openems.edge.core.appmanager.formly

Class Exp

java.lang.Object

io.openems.edge.core.appmanager.formly.Exp

public final class Exp
extends Object

Method Summary

Modifier and Type	Method	Description
static ArrayExpression	array(Variable... variable)	Creates a array of the given values.
static Variable	currentModelValue(Nameable property)	Creates a Variable of the given property of the current value in the model.
static Variable	currentValue(Nameable property)	Creates a Variable of the given property of the current value in the form control.
static Variable	dynamic(String name)	Creates a dynamic Variable.
static StringExpression	ifElse(BooleanExpression statement, StringExpression ifTrue, StringExpression ifFalse)	Creates a combined StringExpression of the given BooleanExpression and StringExpression, which returns the first StringExpression if the given BooleanExpression returns true otherwise the second StringExpression gets returned.
static Variable	initialModelValue(Nameable property)	Creates a Variable to access the initial value of a property.
static <E extends Enum<E> & TranslatableEnum> Variable	staticValue(E enumValue)	Creates a Variable for a static String value.
static Variable	staticValue(Number value)	Creates a Variable for a static Number value.
static Variable	staticValue(String value)	Creates a Variable for a static String value.
static Collector<Variable,?,ArrayExpression>	toArrayExpression()	Creates a collector which collects a Stream of Strings to an ArrayExpression.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

currentValue

public static Variable currentValue(Nameable property)

Creates a Variable of the given property of the current value in the form control.

The difference between this method and the currentModelValue(Nameable) method is, that the value of the currentValue(Nameable) method may be null when a default value was set and the field is readonly.

Parameters:

property - the property to access the value

Returns:

the Variable

currentModelValue

public static Variable currentModelValue(Nameable property)

Creates a Variable of the given property of the current value in the model.

The difference between this method and the currentValue(Nameable) method is, that the value of the currentValue(Nameable) method may be null when a default value was set and the field is readonly.

Parameters:

property - the property of the value

Returns:

the Variable

initialModelValue

public static Variable initialModelValue(Nameable property)

Creates a Variable to access the initial value of a property. Only helpful for already installed instances, otherwise this value is undefined.

Parameters:

property - the property of the value

Returns:

the Variable

staticValue

public static Variable staticValue(String value)

Creates a Variable for a static String value.

Parameters:

value - the value of the variable

Returns:

the Variable

staticValue

public static <E extends Enum<E> & TranslatableEnum>
Variable staticValue(E enumValue)

Creates a Variable for a static String value.

Type Parameters:

E - the type of the enum

Parameters:

enumValue - the value of the variable

Returns:

the Variable

staticValue

public static Variable staticValue(Number value)

Creates a Variable for a static Number value.

Parameters:

value - the value of the variable

Returns:

the Variable

dynamic

public static Variable dynamic(String name)

Creates a dynamic Variable.

Parameters:

name - the name of the variable

Returns:

the created Variable

array

public static ArrayExpression array(Variable... variable)

Creates a array of the given values.

Parameters:

variable - the variables of the array

Returns:

a ArrayExpression

toArrayExpression

public static Collector<Variable,?,ArrayExpression> toArrayExpression()

Creates a collector which collects a Stream of Strings to an ArrayExpression.

Returns:

the Collector

ifElse

public static StringExpression ifElse(BooleanExpression statement,
 StringExpression ifTrue,
 StringExpression ifFalse)

Creates a combined StringExpression of the given BooleanExpression and StringExpression, which returns the first StringExpression if the given BooleanExpression returns true otherwise the second StringExpression gets returned.

Parameters:

statement - the BooleanExpression to determine which StringExpression should be used

ifTrue - the StringExpression to use when the statement returns true

ifFalse - the StringExpression to use when the statement returns false

Returns:

the final StringExpression