# Class SimpleLinkRequest

java.lang.Object
jdk.dynalink.linker.support.SimpleLinkRequest

All Implemented Interfaces:
  `LinkRequest`

public class SimpleLinkRequest extends Object implements LinkRequest
Default simple implementation of `LinkRequest`.

Since:
  9

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `SimpleLinkRequest(CallSiteDescriptor callSiteDescriptor, boolean callSiteUnstable, Object... arguments)`
  Creates a new link request.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Object[]`
  `getArguments()`
  Returns the arguments for the invocation being linked.
  `CallSiteDescriptor`
  `getCallSiteDescriptor()`
  Returns the call site descriptor for the call site being linked.
  `Object`
  `getReceiver()`
  Returns the first argument for the invocation being linked; this is typically the receiver object.
  `boolean`
  `isCallSiteUnstable()`
  Returns true if the call site is considered unstable, that is, it has been relinked more times than was specified in `DynamicLinkerFactory.setUnstableRelinkThreshold(int)`.
  `LinkRequest`
  `replaceArguments(CallSiteDescriptor newCallSiteDescriptor, Object... newArguments)`
  Returns a request identical to this one with call site descriptor and arguments replaced with the ones specified.

  ### Methods declared in class Object

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

- ## Constructor Details

  - ### SimpleLinkRequest

    public SimpleLinkRequest(CallSiteDescriptor callSiteDescriptor, boolean callSiteUnstable, Object... arguments)
    Creates a new link request.
    Parameters:
      `callSiteDescriptor` - the descriptor for the call site being linked. Must not be null.
      `callSiteUnstable` - true if the call site being linked is considered unstable.
      `arguments` - the arguments for the invocation. Must not be null.
    Throws:
      `NullPointerException` - if either `callSiteDescriptor` or `arguments` is null.

- ## Method Details

  - ### getArguments

    public Object[] getArguments()
    Description copied from interface: `LinkRequest`
    Returns the arguments for the invocation being linked. The returned array must be a clone; modifications to it must not affect the arguments in this request.
    Specified by:
      `getArguments` in interface `LinkRequest`
    Returns:
      the arguments for the invocation being linked.

  - ### getReceiver

    public Object getReceiver()
    Description copied from interface: `LinkRequest`
    Returns the first argument for the invocation being linked; this is typically the receiver object. This is a shorthand for `getArguments()[0]` that also avoids the cloning of the arguments array.
    Specified by:
      `getReceiver` in interface `LinkRequest`
    Returns:
      the receiver object.

  - ### getCallSiteDescriptor

    public CallSiteDescriptor getCallSiteDescriptor()
    Description copied from interface: `LinkRequest`
    Returns the call site descriptor for the call site being linked.
    Specified by:
      `getCallSiteDescriptor` in interface `LinkRequest`
    Returns:
      the call site descriptor for the call site being linked.

  - ### isCallSiteUnstable

    public boolean isCallSiteUnstable()
    Description copied from interface: `LinkRequest`
    Returns true if the call site is considered unstable, that is, it has been relinked more times than was specified in `DynamicLinkerFactory.setUnstableRelinkThreshold(int)`. Linkers should use this as a hint to prefer producing linkage that is more stable (its guard fails less frequently), even if that assumption causes a less effective version of an operation to be linked. This is just a hint, though, and linkers are allowed to ignore this property.
    Specified by:
      `isCallSiteUnstable` in interface `LinkRequest`
    Returns:
      true if the call site is considered unstable.

  - ### replaceArguments

    public LinkRequest replaceArguments(CallSiteDescriptor newCallSiteDescriptor, Object... newArguments)
    Description copied from interface: `LinkRequest`
    Returns a request identical to this one with call site descriptor and arguments replaced with the ones specified.
    Specified by:
      `replaceArguments` in interface `LinkRequest`
    Parameters:
      `newCallSiteDescriptor` - the new call site descriptor
      `newArguments` - the new arguments
    Returns:
      a new request identical to this one, except with the call site descriptor and arguments replaced with the specified ones.