| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.webapp; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.jetty.util.resource.Resource; |
| import org.eclipse.jetty.xml.XmlParser; |
| |
| |
| /** |
| * Fragment |
| * |
| * A web-fragment.xml descriptor. |
| */ |
| public class FragmentDescriptor extends WebDescriptor |
| { |
| public static final String NAMELESS = "@@-NAMELESS-@@"; //prefix for nameless Fragments |
| protected static int _counter = 0; |
| |
| public enum OtherType {None, Before, After}; |
| protected OtherType _otherType = OtherType.None; |
| |
| |
| protected List<String> _befores = new ArrayList<String>(); |
| protected List<String> _afters = new ArrayList<String>(); |
| protected String _name; |
| |
| |
| public FragmentDescriptor (Resource xml) |
| throws Exception |
| { |
| super (xml); |
| } |
| |
| public String getName () |
| { |
| return _name; |
| } |
| |
| @Override |
| public void parse () |
| throws Exception |
| { |
| super.parse(); |
| processName(); |
| } |
| |
| public void processName () |
| { |
| XmlParser.Node root = getRoot(); |
| XmlParser.Node nameNode = root.get("name"); |
| _name = NAMELESS+(_counter++); |
| if (nameNode != null) |
| { |
| String tmp = nameNode.toString(false,true); |
| if (tmp!=null && tmp.length()>0) |
| _name = tmp; |
| } |
| } |
| @Override |
| public void processOrdering () |
| { |
| //Process a fragment jar's web-fragment.xml<ordering> elements |
| XmlParser.Node root = getRoot(); |
| |
| XmlParser.Node ordering = root.get("ordering"); |
| if (ordering == null) |
| return; //No ordering for this fragment |
| |
| _isOrdered = true; |
| |
| processBefores(ordering); |
| processAfters(ordering); |
| } |
| |
| |
| public void processBefores (XmlParser.Node ordering) |
| { |
| //Process the <before> elements, looking for an <others/> clause and all of the <name> clauses |
| XmlParser.Node before = ordering.get("before"); |
| if (before == null) |
| return; |
| |
| Iterator<?> iter = before.iterator(); |
| XmlParser.Node node = null; |
| while (iter.hasNext()) |
| { |
| Object o = iter.next(); |
| if (!(o instanceof XmlParser.Node)) continue; |
| node = (XmlParser.Node) o; |
| if (node.getTag().equalsIgnoreCase("others")) |
| { |
| if (_otherType != OtherType.None) |
| throw new IllegalStateException("Duplicate <other> clause detected in "+_xml.getURI()); |
| |
| _otherType = OtherType.Before; |
| } |
| else if (node.getTag().equalsIgnoreCase("name")) |
| _befores.add(node.toString(false,true)); |
| } |
| } |
| |
| public void processAfters (XmlParser.Node ordering) |
| { |
| //Process the <after> elements, look for an <others/> clause and all of the <name/> clauses |
| XmlParser.Node after = ordering.get("after"); |
| if (after == null) |
| return; |
| |
| Iterator<?> iter = after.iterator(); |
| XmlParser.Node node = null; |
| while (iter.hasNext()) |
| { |
| Object o = iter.next(); |
| if (!(o instanceof XmlParser.Node)) continue; |
| node = (XmlParser.Node) o; |
| if (node.getTag().equalsIgnoreCase("others")) |
| { |
| if (_otherType != OtherType.None) |
| throw new IllegalStateException("Duplicate <other> clause detected in "+_xml.getURI()); |
| |
| _otherType = OtherType.After; |
| |
| } |
| else if (node.getTag().equalsIgnoreCase("name")) |
| _afters.add(node.toString(false,true)); |
| } |
| } |
| |
| public List<String> getBefores() |
| { |
| return Collections.unmodifiableList(_befores); |
| } |
| |
| public List<String> getAfters() |
| { |
| return Collections.unmodifiableList(_afters); |
| } |
| |
| public OtherType getOtherType () |
| { |
| return _otherType; |
| } |
| |
| public List<String> getOrdering() |
| { |
| return null; //only used for absolute-ordering in Descriptor |
| } |
| } |