V8Value (j2v8 3.1.2 API)

java.lang.Object
- com.eclipsesource.v8.V8Value

All Implemented Interfaces:

Releasable

Direct Known Subclasses:

V8Object
```
public abstract class V8Value
extends Object
implements Releasable
```
A base class for all V8 resources. V8 resources must be released. The rules for releasing resources is as follows: 1. If you created it, you must release it, with one exception; if the object is being passed pack via a return statement, the system will release it for you. 2. If the system created it, you don’t need to worry about it, with one caveat; if the object was returned to you as a result of a method call, you must release it.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`BOOLEAN`
`static int`	`DOUBLE`
`static int`	`INTEGER`
`static int`	`NULL`
`protected long`	`objectHandle`
`protected boolean`	`released`
`static int`	`STRING`
`static int`	`UNDEFINED`
`static int`	`UNKNOWN`
`protected V8`	`v8`
`static int`	`V8_ARRAY`
`static int`	`V8_FUNCTION`
`static int`	`V8_OBJECT`

Constructor Summary

Constructors
Modifier Constructor and Description

protected V8Value()

protected V8Value(V8 v8)

Constructors
Modifier	Constructor and Description
`protected`	`V8Value()`
`protected`	`V8Value(V8 v8)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`checkReleaesd()`
`protected abstract V8Value`	`createTwin()`
`boolean`	`equals(Object that)`
`protected long`	`getHandle()`
`V8`	`getRuntime()` Gets the runtime this Value was created on.
`V8`	`getRutime()` Deprecated.
`int`	`hashCode()`
`protected long`	`initialize(long runtimePtr)`
`boolean`	`isReleased()` Determine if the native resources have been released.
`boolean`	`isUndefined()` Determines if this value is undefined.
`boolean`	`jsEquals(Object that)` Performs a JS == on the parameter and the receiver.
`void`	`release()` Releases the native resources associated with this V8Value.
`boolean`	`strictEquals(Object that)` Performs a JS === on the parameter and the receiver.
`V8Value`	`twin()` Creates a new Java object pointing at the same V8 Value as this.

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

- Field Detail
  - NULL
```
public static final int NULL
```
    See Also:
    Constant Field Values
  - UNKNOWN
```
public static final int UNKNOWN
```
    See Also:
    Constant Field Values
  - INTEGER
```
public static final int INTEGER
```
    See Also:
    Constant Field Values
  - DOUBLE
```
public static final int DOUBLE
```
    See Also:
    Constant Field Values
  - BOOLEAN
```
public static final int BOOLEAN
```
    See Also:
    Constant Field Values
  - STRING
```
public static final int STRING
```
    See Also:
    Constant Field Values
  - V8_ARRAY
```
public static final int V8_ARRAY
```
    See Also:
    Constant Field Values
  - V8_OBJECT
```
public static final int V8_OBJECT
```
    See Also:
    Constant Field Values
  - V8_FUNCTION
```
public static final int V8_FUNCTION
```
    See Also:
    Constant Field Values
  - UNDEFINED
```
public static final int UNDEFINED
```
    See Also:
    Constant Field Values
  - v8
```
protected V8 v8
```
  - objectHandle
```
protected long objectHandle
```
  - released
```
protected boolean released
```
- Constructor Detail
  - V8Value
```
protected V8Value()
```
  - V8Value
```
protected V8Value(V8 v8)
```
- Method Detail
  - initialize
```
protected long initialize(long runtimePtr)
```
  - isUndefined
```
public boolean isUndefined()
```
    Determines if this value is undefined.
    
    Returns:
    Returns true if the value is undefined, false otherwise
  - getRutime
```
@Deprecated
public V8 getRutime()
```
    Deprecated.
    
    Gets the runtime this Value was created on.
    
    Returns:
    Returns the V8 runtime this value is associated with.
  - getRuntime
```
public V8 getRuntime()
```
    Gets the runtime this Value was created on.
    
    Returns:
    Returns the V8 runtime this value is associated with.
  - twin
```
public V8Value twin()
```
    Creates a new Java object pointing at the same V8 Value as this. If the value is mutated (by adding new members or changing existing ones) then both the original and twin will be updated. Twins are .equal and .strict equals, but not == in Java. Twins must be released separately since they have their own native resources.
    
    Returns:
    A new Java object pointing at the same V8 Value as this.
  - release
```
public void release()
```
    Releases the native resources associated with this V8Value.
    
    Specified by:
    
    release in interface Releasable
  - isReleased
```
public boolean isReleased()
```
    Determine if the native resources have been released. Once released a V8 Value can no longer be used.
    
    Returns:
    Returns true if this object has been released, false otherwise.
  - strictEquals
```
public boolean strictEquals(Object that)
```
    Performs a JS === on the parameter and the receiver.
    
    Returns:
    Returns true iff this === that
  - getHandle
```
protected long getHandle()
```
  - createTwin
```
protected abstract V8Value createTwin()
```
  - equals
```
public boolean equals(Object that)
```
    Overrides:
    
    equals in class Object
  - jsEquals
```
public boolean jsEquals(Object that)
```
    Performs a JS == on the parameter and the receiver.
    
    Returns:
    Returns true iff this == that
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - checkReleaesd
```
protected void checkReleaesd()
```

Class V8Value

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NULL

UNKNOWN

INTEGER

DOUBLE

BOOLEAN

STRING

V8_ARRAY

V8_OBJECT

V8_FUNCTION

UNDEFINED

v8

objectHandle

released

Constructor Detail

V8Value

V8Value

Method Detail

initialize

isUndefined

getRutime

getRuntime

twin

release

isReleased

strictEquals

getHandle

createTwin

equals

jsEquals

hashCode

checkReleaesd