| /******************************************************************************* |
| * Copyright (c) 2006 Oracle Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Oracle Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.bpel.xpath10; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * A filter expression. |
| * |
| * @author Michal Chmielewski (michal.chmielewski@oracle.com) |
| * @date Aug 26, 2008 |
| * |
| */ |
| public class FilterExpr extends Expr { |
| |
| List<Predicate> fList = new ArrayList<Predicate>(); |
| Expr fExpr; |
| |
| |
| /** |
| * Brand new shiny filter expression. |
| * |
| * @param expr the expression to which the filter (predicates) are to be applied. |
| */ |
| public FilterExpr (Expr expr) { |
| super(expr.toString()); |
| fExpr = expr; |
| } |
| |
| /** |
| * @return the expression that is to be predicated. |
| */ |
| public Expr getExpr () { |
| return fExpr; |
| } |
| |
| /** |
| * @return a list of predicates for this filter. |
| */ |
| public List<Predicate> getPredicates() { |
| return fList; |
| } |
| |
| /** |
| * Add a predicate to the filter list. |
| * @param p the predicate to add. |
| */ |
| public void addPredicate (Predicate p) { |
| fList.add(p); |
| } |
| |
| /** |
| * @return true if yes, false if no. |
| */ |
| |
| public boolean hasPredicates () |
| { |
| return fList.size() > 0; |
| } |
| |
| @Override |
| protected String asText() |
| { |
| StringBuilder sb = new StringBuilder(); |
| if ( fExpr != null ) { |
| sb.append(fExpr.getText()); |
| } |
| for(Predicate p : fList) { |
| sb.append(p.getText()); |
| } |
| return sb.toString(); |
| } |
| |
| |
| /** |
| * @see org.eclipse.bpel.xpath10.Expr#getPosition() |
| */ |
| @Override |
| public int getPosition () { |
| return fExpr != null ? fExpr.getPosition() : -1; |
| } |
| |
| /** |
| * @see org.eclipse.bpel.xpath10.Expr#getEndPosition() |
| */ |
| @Override |
| public int getEndPosition () { |
| return fExpr != null ? fExpr.getEndPosition() : -1; |
| } |
| |
| } |