How to use org.drools.guvnor.models.commons.shared.rule

private void visitFromAccumulateCompositeFactPattern( FromAccumulateCompositeFactPattern pattern ) {
  visit( pattern.getFactPattern() );
  visit( pattern.getSourcePattern() );
  parseStringPattern( pattern.getActionCode() );
  parseStringPattern( pattern.getInitCode() );
  parseStringPattern( pattern.getReverseCode() );
}

public void visit( ExpressionMethod part ) {
  ExpressionMethod method = new ExpressionMethod( part.getName(), part.getClassType(), part.getGenericType(), part.getParametricType() );
  copyMethodParams( part, method );
  add( method );
  moveNext( part );
}

private void visitFactPattern( FactPattern pattern ) {
  this.factPattern = pattern;
  for ( FieldConstraint fc : pattern.getFieldConstraints() ) {
    visit( fc );
  }
}

private void visitActionFieldList( ActionUpdateField afl ) {
  String factType = model.getLHSBindingType( afl.getVariable() );
  for ( ActionFieldValue afv : afl.getFieldValues() ) {
    InterpolationVariable var = new InterpolationVariable( afv.getValue(),
                                afv.getType(),
                                factType,
                                afv.getField() );
    if ( afv.getNature() == FieldNatureType.TYPE_TEMPLATE && !vars.containsKey( var ) ) {
      vars.put( var,
           vars.size() );
    }
  }
}

private void visitFromCompositeFactPattern( FromCompositeFactPattern pattern ) {
  visit( pattern.getFactPattern() );
  parseStringPattern( pattern.getExpression().getText() );
}

private void addNewFact( String itemText,
             int position ) {
  this.model.addLhsItem( new FactPattern( itemText ),
              position );
}

public void visit( ExpressionCollectionIndex part ) {
  ExpressionCollectionIndex method = new ExpressionCollectionIndex( part.getName(), part.getClassType(), part.getGenericType(), part.getParametricType() );
  copyMethodParams( part, method );
  add( method );
  moveNext( part );
}

private void addRetract( String var,
             int position ) {
  this.model.addRhsItem( new ActionRetractFact( var ),
              position );
}

private void addNewCE( String s,
            int position ) {
  this.model.addLhsItem( new CompositeFactPattern( s ),
              position );
}

private void addModify( String itemText,
            int position ) {
  this.model.addRhsItem( new ActionUpdateField( itemText ),
              position );
}

private void addActionSetField( String itemText,
                int position ) {
  this.model.addRhsItem( new ActionSetField( itemText ),
              position );
}

public void visit( ExpressionGlobalVariable part ) {
  add( new ExpressionGlobalVariable( part.getName(), part.getClassType(), part.getGenericType(), part.getParametricType() ) );
  moveNext( part );
}

private void addCallMethod( String itemText,
              int position ) {
  this.model.addRhsItem( new ActionCallMethod( itemText ),
              position );
}

private void visitCompositeFieldConstraint( CompositeFieldConstraint cfc ) {
  if ( cfc.getConstraints() != null ) {
    for ( FieldConstraint fc : cfc.getConstraints() ) {
      visit( fc );
    }
  }
}

@Override
public String getFieldName() {
  return getExpressionLeftSide().getFieldName();
}

public void visit( ExpressionVariable part ) {
  add( new ExpressionVariable( part.getFact() ) );
  moveNext( part );
}

private void visitCompositeFactPattern( CompositeFactPattern pattern ) {
  if ( pattern.getPatterns() != null ) {
    for ( IFactPattern fp : pattern.getPatterns() ) {
      visit( fp );
    }
  }
}

private void addNewDSLLhs( final DSLSentence sentence,
              int position ) {
  model.addLhsItem( sentence.copy(),
           position );
}

private void addNewDSLRhs( DSLSentence sentence,
              int position ) {
  this.model.addRhsItem( sentence.copy(),
              position );
}

public String getPreviousClassType() {
  ExpressionPart last = getPreviousPart();
  return last.getPrevious() == null ? null : last.getPrevious().getClassType();
}