Cleaner.java

package com.sleepycat.je.cleaner;
public class Cleaner {
  /** 
 * Returns whether the given BIN entry may be stripped by the evictor. True
 * is always returned if the BIN is not dirty. False is returned if the BIN
 * is dirty and the entry will be migrated soon.
 */
  public boolean isEvictable(  BIN bin,  int index){
    if (bin.getDirty()) {
      if (bin.getMigrate(index)) {
        return false;
      }
      boolean isResident=(bin.getTarget(index) != null);
      Long fileNum=new Long(DbLsn.getFileNumber(bin.getLsn(index)));
      if ((PROACTIVE_MIGRATION || isResident) && mustBeCleanedFiles.contains(fileNum)) {
        return false;
      }
      if ((clusterAll || (clusterResident && isResident)) && lowUtilizationFiles.contains(fileNum)) {
        return false;
      }
    }
    return true;
  }
}