How to use

retract

method

in

org.drools.common.InternalWorkingMemory

public void retractFact(String retractFactName) {
  this.workingMemory.retract(this.factHandles.get(retractFactName));
  this.populatedData.remove(retractFactName);
}

public void retractFact(String retractFactName) {
  this.workingMemory.retract(this.factHandles.get(retractFactName));
  this.populatedData.remove(retractFactName);
}

public void execute(InternalWorkingMemory workingMemory) {
  if ( beliefSet.isEmpty() ) {
    // this needs to be scheduled so we don't upset the current
    // working memory operation
    workingMemory.retract( this.handle,
                false,
                true,
                (Rule) context.getRuleOrigin(),
                this.activation );
  }
}