| // $Id: PathImpl.java 17744 2009-10-14 14:38:57Z hardy.ferentschik $ |
| /* |
| * JBoss, Home of Professional Open Source |
| * Copyright 2009, Red Hat, Inc. and/or its affiliates, and individual contributors |
| * by the @authors tag. See the copyright.txt in the distribution for a |
| * full listing of individual contributors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| // Modified by Google: Replace java.util.Pattern with gwt RegExp |
| package org.hibernate.validator.engine; |
| |
| import com.google.gwt.regexp.shared.MatchResult; |
| import com.google.gwt.regexp.shared.RegExp; |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import javax.validation.Path; |
| |
| /** |
| * @author Hardy Ferentschik |
| */ |
| public class PathImpl implements Path, Serializable { |
| |
| private static final long serialVersionUID = 7564511574909882392L; |
| |
| /** |
| * Regular expression used to split a string path into its elements. |
| * |
| * @see <a href="http://www.regexplanet.com/simple/index.jsp">Regular expression tester</a> |
| */ |
| private static final RegExp pathPattern = RegExp.compile("(\\w+)(\\[(\\w*)\\])?(\\.(.*))*"); |
| |
| private static final String PROPERTY_PATH_SEPERATOR = "."; |
| |
| private final List<Node> nodeList; |
| |
| /** |
| * Returns a {@code Path} instance representing the path described by the given string. To create a root node the empty string should be passed. |
| * |
| * @param propertyPath the path as string representation. |
| * |
| * @return a {@code Path} instance representing the path described by the given string. |
| * |
| * @throws IllegalArgumentException in case {@code property == null} or {@code property} cannot be parsed. |
| */ |
| public static PathImpl createPathFromString(String propertyPath) { |
| if ( propertyPath == null ) { |
| throw new IllegalArgumentException( "null is not allowed as property path." ); |
| } |
| |
| if ( propertyPath.length() == 0 ) { |
| return createNewPath( null ); |
| } |
| |
| return parseProperty( propertyPath ); |
| } |
| |
| public static PathImpl createNewPath(String name) { |
| PathImpl path = new PathImpl(); |
| NodeImpl node = new NodeImpl( name ); |
| path.addNode( node ); |
| return path; |
| } |
| |
| public static PathImpl createShallowCopy(Path path) { |
| return path == null ? null : new PathImpl( path ); |
| } |
| |
| private PathImpl(Path path) { |
| this.nodeList = new ArrayList<Node>(); |
| for ( Object aPath : path ) { |
| nodeList.add( new NodeImpl( ( Node ) aPath ) ); |
| } |
| } |
| |
| private PathImpl() { |
| nodeList = new ArrayList<Node>(); |
| } |
| |
| private PathImpl(List<Node> nodeList) { |
| this.nodeList = new ArrayList<Node>(); |
| for ( Node node : nodeList ) { |
| this.nodeList.add( new NodeImpl( node ) ); |
| } |
| } |
| |
| public boolean isRootPath() { |
| return nodeList.size() == 1 && nodeList.get( 0 ).getName() == null; |
| } |
| |
| public PathImpl getPathWithoutLeafNode() { |
| List<Node> nodes = new ArrayList<Node>( nodeList ); |
| PathImpl path = null; |
| if ( nodes.size() > 1 ) { |
| nodes.remove( nodes.size() - 1 ); |
| path = new PathImpl( nodes ); |
| } |
| return path; |
| } |
| |
| public void addNode(Node node) { |
| nodeList.add( node ); |
| } |
| |
| public Node removeLeafNode() { |
| if ( nodeList.size() == 0 ) { |
| throw new IllegalStateException( "No nodes in path!" ); |
| } |
| if ( nodeList.size() == 1 ) { |
| throw new IllegalStateException( "Root node cannot be removed!" ); |
| } |
| return nodeList.remove( nodeList.size() - 1 ); |
| } |
| |
| public NodeImpl getLeafNode() { |
| if ( nodeList.size() == 0 ) { |
| throw new IllegalStateException( "No nodes in path!" ); |
| } |
| return ( NodeImpl ) nodeList.get( nodeList.size() - 1 ); |
| } |
| |
| public Iterator<Path.Node> iterator() { |
| return nodeList.iterator(); |
| } |
| |
| public boolean isSubPathOf(Path path) { |
| Iterator<Node> pathIter = path.iterator(); |
| Iterator<Node> thisIter = iterator(); |
| while ( pathIter.hasNext() ) { |
| Node pathNode = pathIter.next(); |
| if ( !thisIter.hasNext() ) { |
| return false; |
| } |
| Node thisNode = thisIter.next(); |
| if ( !thisNode.equals( pathNode ) ) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder builder = new StringBuilder(); |
| Iterator<Path.Node> iter = iterator(); |
| while ( iter.hasNext() ) { |
| Node node = iter.next(); |
| builder.append( node.toString() ); |
| if ( iter.hasNext() ) { |
| builder.append( PROPERTY_PATH_SEPERATOR ); |
| } |
| } |
| return builder.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if ( this == o ) { |
| return true; |
| } |
| if ( o == null || getClass() != o.getClass() ) { |
| return false; |
| } |
| |
| PathImpl path = ( PathImpl ) o; |
| if ( nodeList != null && !nodeList.equals( path.nodeList ) ) { |
| return false; |
| } |
| if ( nodeList == null && path.nodeList != null ) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| return nodeList != null ? nodeList.hashCode() : 0; |
| } |
| |
| private static PathImpl parseProperty(String property) { |
| PathImpl path = new PathImpl(); |
| String tmp = property; |
| do { |
| MatchResult matcher = pathPattern.exec(tmp); |
| if (matcher != null) { |
| String value = matcher.getGroup(1); |
| String indexed = matcher.getGroup(2); |
| String index = matcher.getGroup(3); |
| NodeImpl node = new NodeImpl( value ); |
| if ( indexed != null ) { |
| node.setInIterable( true ); |
| } |
| if ( index != null && index.length() > 0 ) { |
| try { |
| Integer i = Integer.parseInt( index ); |
| node.setIndex( i ); |
| } |
| catch ( NumberFormatException e ) { |
| node.setKey( index ); |
| } |
| } |
| path.addNode( node ); |
| tmp = matcher.getGroup(5); |
| } |
| else { |
| throw new IllegalArgumentException( "Unable to parse property path " + property ); |
| } |
| } while ( tmp != null ); |
| return path; |
| } |
| |
| } |