ConstantCache (JRuby Core 1.7.6 API)

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java.lang.Object
- org.jruby.runtime.opto.ConstantCache

```
public class ConstantCache
extends Object
```
A tuple representing the data needed to verify a cached constant:
The value of the constant
The generation of the constant's invalidator at the time of caching
The constant's invalidator
(Optional) the hashcode of the module form which the constant was cache

Field Summary

Fields
Modifier and Type Field and Description

Object generation

Invalidator invalidator

int targetHash

IRubyObject value

Constructor Summary

Constructors
Constructor and Description
`ConstantCache(IRubyObject value, Object generation, Invalidator invalidator)` Construct a new ConstantCache with the given elements.
`ConstantCache(IRubyObject value, Object generation, Invalidator invalidator, int targetHash)` Construct a new ConstantCache with the given elements.

Method Summary

Methods
Modifier and Type	Method and Description
`static boolean`	`isCached(ConstantCache cache)` Check if the given ConstantCache is non-null and valid.
`static boolean`	`isCachedFrom(RubyModule target, ConstantCache cache)` Check if the given ConstantCache is non-null and valid, given the target module.

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

Field Detail

value
```
public final IRubyObject value
```

generation
```
public final Object generation
```

invalidator
```
public final Invalidator invalidator
```

targetHash
```
public final int targetHash
```

Constructor Detail

ConstantCache

public ConstantCache(IRubyObject value,
             Object generation,
             Invalidator invalidator,
             int targetHash)

Construct a new ConstantCache with the given elements.

Parameters:: value -; generation -; invalidator -; targetHash -

ConstantCache

public ConstantCache(IRubyObject value,
             Object generation,
             Invalidator invalidator)

Construct a new ConstantCache with the given elements.

Parameters:: value -; generation -; invalidator -

Method Detail
- isCachedFrom
```
public static boolean isCachedFrom(RubyModule target,
                   ConstantCache cache)
```
  Check if the given ConstantCache is non-null and valid, given the target module. This method is static to ensure it is inlinable as trivially as possible.
- isCached
```
public static boolean isCached(ConstantCache cache)
```
  Check if the given ConstantCache is non-null and valid. This method is static to ensure it is inlinable as trivially as possible.

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