oaacomparepriorities.java

SRI international 发布的OAA框架软件

/*
 * Created on Jan 8, 2004
 *
 * To change the template for this generated file go to
 * Window - Preferences - Java - Code Generation - Code and Comments
 */
package com.sri.oaa2.lib;

import java.util.Comparator;

import com.sri.oaa2.icl.IclTerm;
import com.sri.oaa2.icl.ToInt;

/**
 * @author agno
 *
 * To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Generation - Code and Comments
 */
/**
 * purpose: Returns true if Elt1 and Elt2 should swap according to priority
 *Remark : implements IntCompTerms, so it can be used in icl_SortList.
 */
class OaaComparePriorities implements Comparator {

  LibOaa mLibOaa;

  /*
   * Constructor
   */
  public OaaComparePriorities(LibOaa inLibOaa) {
    mLibOaa = inLibOaa;
  }
  /**
   * Compare
   */
  public final int compare(Object o1, Object o2) {
    IclTerm t1 = (IclTerm)o1;
    IclTerm t2 = (IclTerm)o2;
    int p1 = 0;
    int p2 = 0;

    IclTerm param1 = mLibOaa.oaa_extract_event_param(t1, "priority");
    IclTerm param2 = mLibOaa.oaa_extract_event_param(t2, "priority");

    if (param1.isInt()) {
      p1 = ToInt.getInstance().from(param1);
    }
    else {
      p1 = 5;
    }
    if (param2.isInt()) {
      p2 = ToInt.getInstance().from(param2);
    }
    else {
      p2 = 5;
    }
    //return (p1 >= p2);
    return (p1 - p2);
  }
}