package org.apache.ibatis.cache.decorators;
import org.apache.ibatis.cache.Cache;
import java.util.concurrent.locks.ReadWriteLock;
public class ScheduledCache implements Cache {
private Cache delegate;
protected long clearInterval;
protected long lastClear;
public ScheduledCache(Cache delegate) {
this.delegate = delegate;
this.clearInterval = 60 * 60 * 1000; // 1 hour
this.lastClear = System.currentTimeMillis();
}
public void setClearInterval(long clearInterval) {
this.clearInterval = clearInterval;
}
public String getId() {
return delegate.getId();
}
public int getSize() {
clearWhenStale();
return delegate.getSize();
}
public void putObject(Object key, Object object) {
clearWhenStale();
delegate.putObject(key, object);
}
public Object getObject(Object key) {
if (clearWhenStale()) {
return null;
} else {
return delegate.getObject(key);
}
}
public Object removeObject(Object key) {
clearWhenStale();
return delegate.removeObject(key);
}
public void clear() {
lastClear = System.currentTimeMillis();
delegate.clear();
}
public ReadWriteLock getReadWriteLock() {
return delegate.getReadWriteLock();
}
public int hashCode() {
return delegate.hashCode();
}
public boolean equals(Object obj) {
return delegate.equals(obj);
}
private boolean clearWhenStale() {
if (System.currentTimeMillis() - lastClear > clearInterval) {
clear();
return true;
}
return false;
}
}
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