diff options
Diffstat (limited to 'libjava/gnu/xml/transform/KeyFunction.java')
| -rw-r--r-- | libjava/gnu/xml/transform/KeyFunction.java | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/libjava/gnu/xml/transform/KeyFunction.java b/libjava/gnu/xml/transform/KeyFunction.java deleted file mode 100644 index eb842f289c9..00000000000 --- a/libjava/gnu/xml/transform/KeyFunction.java +++ /dev/null @@ -1,216 +0,0 @@ -/* KeyFunction.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.LinkedHashSet; -import java.util.LinkedList; -import java.util.List; -import javax.xml.namespace.QName; -import javax.xml.xpath.XPathFunction; -import javax.xml.xpath.XPathFunctionException; -import org.w3c.dom.Document; -import org.w3c.dom.Node; -import gnu.xml.xpath.Expr; -import gnu.xml.xpath.Function; -import gnu.xml.xpath.Pattern; - -/** - * The XSLT <code>key()</code>function. - * - * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> - */ -final class KeyFunction - extends Pattern - implements XPathFunction, Function -{ - - final Stylesheet stylesheet; - List args; - - KeyFunction(Stylesheet stylesheet) - { - this.stylesheet = stylesheet; - } - - public Object evaluate(List args) - throws XPathFunctionException - { - // Useless... - return Collections.EMPTY_SET; - } - - public void setArguments(List args) - { - this.args = args; - } - - public boolean matches(Node context) - { - Object ret = evaluate(context, 1, 1); - return !((Collection) ret).isEmpty(); - } - - public Object evaluate(Node context, int pos, int len) - { - // Evaluate arguments - int arity = args.size(); - List values = new ArrayList(arity); - for (int i = 0; i < arity; i++) - { - Expr arg = (Expr) args.get(i); - values.add(arg.evaluate(context, pos, len)); - } - // Get key name - QName keyName = QName.valueOf(_string(context, values.get(0))); - // Expand qualified name - String uri = keyName.getNamespaceURI(); - String prefix = keyName.getPrefix(); - if ((uri == null || uri.length() == 0) && - (prefix != null && prefix.length() > 0)) - { - uri = stylesheet.getNamespaceURI(prefix); - if (uri != null && uri.length() > 0) - { - String localName = keyName.getLocalPart(); - keyName = new QName(uri, localName, prefix); - } - } - // Compute matching key set - Collection keySet = new LinkedList(); - for (Iterator i = stylesheet.keys.iterator(); i.hasNext(); ) - { - Key key = (Key) i.next(); - if (key.name.equals(keyName)) - { - keySet.add(key); - } - } - // Get target - Object target = values.get(1); - Collection acc = new LinkedHashSet(); - Document doc = (context instanceof Document) ? (Document) context : - context.getOwnerDocument(); - if (target instanceof Collection) - { - for (Iterator i = ((Collection) target).iterator(); i.hasNext(); ) - { - String val = Expr.stringValue((Node) i.next()); - addKeyNodes(doc, keySet, val, acc); - } - } - else - { - String val = Expr._string(context, target); - addKeyNodes(doc, keySet, val, acc); - } - List ret = new ArrayList(acc); - Collections.sort(ret, documentOrderComparator); - return ret; - } - - final void addKeyNodes(Node node, Collection keySet, - String value, Collection acc) - { - addKeyNodeIfMatch(node, keySet, value, acc); - // Apply children - for (Node ctx = node.getFirstChild(); ctx != null; - ctx = ctx.getNextSibling()) - { - addKeyNodes(ctx, keySet, value, acc); - } - } - - final void addKeyNodeIfMatch(Node node, Collection keySet, - String value, Collection acc) - { - for (Iterator i = keySet.iterator(); i.hasNext(); ) - { - Key key = (Key) i.next(); - if (key.match.matches(node)) - { - Object eval = key.use.evaluate(node, 1, 1); - if (eval instanceof Collection) - { - for (Iterator j = ((Collection) eval).iterator(); - j.hasNext(); ) - { - String keyValue = Expr.stringValue((Node) j.next()); - if (value.equals(keyValue)) - { - acc.add(node); - return; - } - } - } - else - { - String keyValue = Expr._string(node, eval); - if (value.equals(keyValue)) - { - acc.add(node); - return; - } - } - } - } - } - - public Expr clone(Object context) - { - Stylesheet s = stylesheet; - if (context instanceof Stylesheet) - { - s = (Stylesheet) context; - } - KeyFunction f = new KeyFunction(s); - int len = args.size(); - List args2 = new ArrayList(len); - for (int i = 0; i < len; i++) - { - args2.add(((Expr) args.get(i)).clone(context)); - } - f.setArguments(args2); - return f; - } - -} - |
