Cache

```
public final class Cache
extends Object
```
A cache :) This is the old operation-cache used in JDD. it is being replaced with SimpleCache.java that is somehow simpler (in its implementation) and saves a byte or two in memory...

Constructors
Constructor and Description
`Cache(int size, int members)`

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`CacheEntry`	`access1(int x)`
`CacheEntry`	`access2(int op1, int op2)`
`CacheEntry`	`access3(int type, int op1, int op2)`
`void`	`check_cache(int[] t_var)` check if a cached answer is a valid node.
`double`	`computeHitRate()`
`double`	`computeLoadFactor()` cache load factor, slow!
`void`	`free_or_grow()`
`void`	`free_or_grow(NodeTable nt)`
`int`	`getSize()`
`static void`	`internal_test()` testbench.
`void`	`invalidate_cache()`
`void`	`invalidate_cache(NodeTable nt)`
`void`	`invalidate_cache(NodeTable nt, int size)`
`void`	`showStats(String type)`

public Cache(int size,
             int members)

public void invalidate_cache(NodeTable nt)

public void invalidate_cache(NodeTable nt,
                             int size)

public void free_or_grow(NodeTable nt)

public CacheEntry access3(int type,
                          int op1,
                          int op2)

public CacheEntry access2(int op1,
                          int op2)

computeLoadFactor
```
public double computeLoadFactor()
```
cache load factor, slow!

check_cache
```
public void check_cache(int[] t_var)
```
check if a cached answer is a valid node. ONLY VALID FOR BDD-ANSWER CACHES!

Class Cache