AbstractEventContext (Tapestry API - 5.8.7)

java.lang.Object
- org.apache.tapestry5.internal.AbstractEventContext

All Implemented Interfaces:

EventContext

Direct Known Subclasses:

ArrayEventContext, URLEventContext
```
public abstract class AbstractEventContext
extends java.lang.Object
implements EventContext
```

Constructor Summary

Constructors
Constructor Description

AbstractEventContext()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isEmpty()`	Returns `true` if this context contains no elements.
`java.lang.String`	`toString()`
`java.lang.String[]`	`toStrings()`	Extracts the value of each context value as a string.
`<T> java.util.Optional<T>`	`tryGet(java.lang.Class<T> desiredType, int index)`	Tries to extract a parameter value and coerces or decodes it to the desired type.

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

Methods inherited from interface org.apache.tapestry5.EventContext
get, getCount

- Constructor Detail
  - AbstractEventContext
```
public AbstractEventContext()
```
- Method Detail
  - toStrings
```
public java.lang.String[] toStrings()
```
    Description copied from interface: EventContext
    
    Extracts the value of each context value as a string.
    
    Specified by:
    
    toStrings in interface EventContext
    
    Returns:
    
    context values
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - isEmpty
```
public boolean isEmpty()
```
    Description copied from interface: EventContext
    
    Returns true if this context contains no elements.
    
    Specified by:
    
    isEmpty in interface EventContext
  - tryGet
```
public <T> java.util.Optional<T> tryGet(java.lang.Class<T> desiredType,
                                        int index)
```
    Description copied from interface: EventContext
    
    Tries to extract a parameter value and coerces or decodes it to the desired type.
    
    Specified by:
    
    tryGet in interface EventContext
    
    Parameters:
    
    desiredType - the type of value required
    
    index - identifies which parameter value to extract
    
    Returns:
    
    the value extracted and converted or coerced, wrapped in an Optional, or Optional.empty() if index is out of bounds, or the value can't be converted.