SoftReferenceCache

java.lang.Object
- org.apache.pdfbox.jbig2.util.cache.SoftReferenceCache

All Implemented Interfaces:: Cache

public class SoftReferenceCache
extends java.lang.Object
implements Cache

Field Summary

Fields
Modifier and Type Field Description

private java.util.Map<java.lang.Object,java.lang.ref.SoftReference<?>> cache

Constructor Summary

Constructors
Constructor Description

SoftReferenceCache()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`	Removes all mappings from a map (optional operation).
`java.lang.Object`	`get(java.lang.Object key)`
`private java.lang.Object`	`getValueNullSafe(java.lang.ref.SoftReference<?> softReference)`
`java.lang.Object`	`put(java.lang.Object key, java.lang.Object value, int sizeEstimate)`
`java.lang.Object`	`remove(java.lang.Object key)`

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

- Field Detail
  - cache
```
private final java.util.Map<java.lang.Object,java.lang.ref.SoftReference<?>> cache
```
- Constructor Detail
  - SoftReferenceCache
```
public SoftReferenceCache()
```
- Method Detail
  - put
```
public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value,
                            int sizeEstimate)
```
    Specified by:
    
    put in interface Cache
    
    Parameters:
    
    key - value to be used as key
    
    value - value to be stored
    
    sizeEstimate - estimated size
    
    Returns:
    
    the old object, that was replaced if present. Otherwise null.
  - get
```
public java.lang.Object get(java.lang.Object key)
```
    Specified by:
    
    get in interface Cache
  - clear
```
public void clear()
```
    Description copied from interface: Cache
    
    Removes all mappings from a map (optional operation).
    
    Specified by:
    
    clear in interface Cache
  - remove
```
public java.lang.Object remove(java.lang.Object key)
```
    Specified by:
    
    remove in interface Cache
    
    Parameters:
    
    key - the key of the to be removed object
    
    Returns:
    
    the removed object, if present. Otherwise null.
  - getValueNullSafe
```
private java.lang.Object getValueNullSafe(java.lang.ref.SoftReference<?> softReference)
```