DynamicArgument (Marvin API documentation (c) 1998-2022 ChemAxon Ltd.)

java.lang.Object
- chemaxon.marvin.services.ServiceArgument<RT>
- - chemaxon.marvin.services.DynamicArgument<CT,RT>

Type Parameters:

CT - the context type

RT - the result type
```
@PublicAPI
public abstract class DynamicArgument<CT,RT>
extends ServiceArgument<RT>
```
ServiceArguments implementing this interface should support automatic evaluation of arguments before service call based on context.
NOTE: subclasses MUST HAVE default constructor to use from Marvin Sketch

Since:

5.6

Field Summary
- Fields inherited from class chemaxon.marvin.services.ServiceArgument
  alias, constant, name, type, value

Constructor Summary

Constructors
Modifier Constructor Description

protected DynamicArgument()

protected DynamicArgument(String expression)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract RT`	`evaluate(CT context)`	Evaluates the dynamic argument based on context
`String`	`getExpression()`	Returns the expression used for evaluations
`String`	`getPlaceholderText()`	Returns the value placeholder text.
`boolean`	`isValid()`	Returns `true` if service argument is valid
`void`	`setExpression(String expression)`	Sets the expression
`String`	`toString()`

Methods inherited from class chemaxon.marvin.services.ServiceArgument
createArgument, createArgument, createArgumentAs, createArgumentAs, createConstantFromString, getAlias, getName, getType, getValue, setAlias, setName, setType, setValue

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

- Constructor Detail
  - DynamicArgument
```
protected DynamicArgument()
```
  - DynamicArgument
```
protected DynamicArgument(String expression)
```
- Method Detail
  - setExpression
```
public void setExpression(String expression)
```
    Sets the expression
    
    Parameters:
    
    expression - used for evaluation
  - getExpression
```
public String getExpression()
```
    Returns the expression used for evaluations
    
    Returns:
    
    the expression used for evaluations
  - evaluate
```
public abstract RT evaluate(CT context)
```
    Evaluates the dynamic argument based on context
    
    Parameters:
    
    context - the context of evalution
    
    Returns:
    
    the evaluated value
  - isValid
```
public boolean isValid()
```
    Description copied from class: ServiceArgument
    
    Returns true if service argument is valid
    
    Overrides:
    
    isValid in class ServiceArgument<RT>
    
    Returns:
    
    true if service argument is valid
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class ServiceArgument<RT>
  - getPlaceholderText
```
public String getPlaceholderText()
```
    Returns the value placeholder text. Defalult implementation returns the String <Calculated>
    
    Returns:
    
    the value placeholder text