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-/* ForEachNode.java --
- Copyright (C) 2004 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package gnu.xml.transform;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Iterator;
-import java.util.List;
-import javax.xml.namespace.QName;
-import javax.xml.transform.TransformerException;
-import org.w3c.dom.Node;
-import gnu.xml.xpath.Expr;
-
-/**
- * A template node representing an XSLT <code>for-each</code> instruction.
- *
- * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
- */
-final class ForEachNode
- extends TemplateNode
-{
-
- final Expr select;
- final List sortKeys;
-
- ForEachNode(TemplateNode children, TemplateNode next, Expr select,
- List sortKeys)
- {
- super(children, next);
- this.select = select;
- this.sortKeys = sortKeys;
- }
-
- TemplateNode clone(Stylesheet stylesheet)
- {
- int len = sortKeys.size();
- List sortKeys2 = new ArrayList(len);
- for (int i = 0; i < len; i++)
- {
- sortKeys2.add(((Key) sortKeys.get(i)).clone(stylesheet));
- }
- return new ForEachNode((children == null) ? null :
- children.clone(stylesheet),
- (next == null) ? null :
- next.clone(stylesheet),
- select.clone(stylesheet),
- sortKeys2);
- }
-
- void doApply(Stylesheet stylesheet, QName mode,
- Node context, int pos, int len,
- Node parent, Node nextSibling)
- throws TransformerException
- {
- if (children != null)
- {
- // Set current template to null
- Template saved = stylesheet.currentTemplate;
- stylesheet.currentTemplate = null;
- Object ret = select.evaluate(context, pos, len);
- //System.err.println(toString() + ": " + context+" -> "+ret);
- if (ret instanceof Collection)
- {
- Collection ns = (Collection) ret;
- List list = new ArrayList(ns);
- if (sortKeys != null)
- {
- for (Iterator i = sortKeys.iterator(); i.hasNext(); )
- {
- SortKey sortKey = (SortKey) i.next();
- sortKey.init(stylesheet, mode, context, pos, len, parent,
- nextSibling);
- }
- Collections.sort(list, new XSLComparator(sortKeys));
- }
- else
- {
- Collections.sort(list, documentOrderComparator);
- }
- // Perform children for each node
- int l = list.size();
- int p = 1;
- for (Iterator i = list.iterator(); i.hasNext(); )
- {
- Node node = (Node) i.next();
- stylesheet.current = node;
- children.apply(stylesheet, mode,
- node, p++, l,
- parent, nextSibling);
- }
- }
- // Restore current template
- stylesheet.currentTemplate = saved;
- }
- if (next != null)
- {
- next.apply(stylesheet, mode,
- context, pos, len,
- parent, nextSibling);
- }
- }
-
- public String toString()
- {
- StringBuffer buf = new StringBuffer(getClass().getName());
- buf.append('[');
- buf.append("select=");
- buf.append(select);
- buf.append(']');
- return buf.toString();
- }
-
-}
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