PostingRule.java

package postingrules;

/*Generated by MPS */

import mf.Money;

public abstract class PostingRule {
  private AccountType myType;
  private boolean myTaxable;
  protected PostingRule(AccountType type, boolean isTaxable) {
    this.myType = type;
    this.myTaxable = isTaxable;
  }
  public void process(AccountingEvent evt) {
    makeEntry(evt, calculateAmount(evt));
    if (myTaxable) {
      generateTax(evt);
    }
  }
  protected abstract Money calculateAmount(AccountingEvent evt);
  private void makeEntry(AccountingEvent evt, Money amount) {
    Entry newEntry = new Entry(amount, evt.getWhenNoticed());
    evt.getSubject().addEntry(newEntry, myType);
    evt.addResultingEntry(newEntry);
  }
  private void generateTax(AccountingEvent evt) {
    new TaxEvent(evt, calculateAmount(evt)).process();
  }
}