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+/* gnuContext.java --
+ Copyright (C) 2005 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.CORBA;
+
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+
+import org.omg.CORBA.Any;
+import org.omg.CORBA.Bounds;
+import org.omg.CORBA.CTX_RESTRICT_SCOPE;
+import org.omg.CORBA.Context;
+import org.omg.CORBA.NVList;
+
+/**
+ * The working implementation of the {@link org.omg.CORBA.Context}.
+ * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
+ */
+public class gnuContext
+ extends Context
+{
+ /**
+ * The parent context.
+ */
+ Context parent;
+
+ /**
+ * The collection to store the context properties.
+ */
+ Map properties = new Hashtable();
+
+ /**
+ * The name of this context.
+ */
+ String name;
+
+ /**
+ * Creates the new context with the given name and parent.
+ *
+ * @param a_name a name of the new context.
+ * @param a_parent a parent, used to resolve the missing references.
+ */
+ public gnuContext(String a_name, Context a_parent)
+ {
+ name = a_name;
+ parent = a_parent;
+ }
+
+ /** {@inheritDoc} */
+ public String context_name()
+ {
+ return name;
+ }
+
+ /** {@inheritDoc} */
+ public Context create_child(String child)
+ {
+ return new gnuContext(child, this);
+ }
+
+ /** {@inheritDoc} */
+ public void delete_values(String property)
+ {
+ boolean starts = false;
+ if (property.endsWith("*"))
+ {
+ starts = true;
+ property = property.substring(0, property.length() - 1);
+ }
+
+ Set keys = properties.keySet();
+
+ Iterator iter = keys.iterator();
+ while (iter.hasNext())
+ {
+ String key = (String) iter.next();
+ if ((starts && key.startsWith(property)) ||
+ (!starts && key.equals(property))
+ )
+ iter.remove();
+ }
+ }
+
+ /** {@inheritDoc} */
+ public NVList get_values(String start_scope, int flags, String pattern)
+ {
+ if (start_scope != null)
+ {
+ Context c = this;
+ while (c != null && !c.context_name().equals(start_scope))
+ c = c.parent();
+ if (c == null)
+ return new gnuNVList();
+ }
+
+ try
+ {
+ gnuNVList rt = new gnuNVList();
+
+ boolean starts = false;
+ if (pattern.endsWith("*"))
+ {
+ starts = true;
+ pattern = pattern.substring(0, pattern.length() - 1);
+ }
+
+ Set keys = properties.keySet();
+
+ Iterator iter = keys.iterator();
+ while (iter.hasNext())
+ {
+ String key = (String) iter.next();
+ if ((starts && key.startsWith(pattern)) ||
+ (!starts && key.equals(pattern))
+ )
+ {
+ rt.add_value(key, (Any) properties.get(key), 0);
+ }
+ }
+
+ if ((flags & CTX_RESTRICT_SCOPE.value) == 0 && parent != null)
+ {
+ NVList par = parent.get_values(start_scope, flags, pattern);
+ for (int i = 0; i < par.count(); i++)
+ {
+ rt.list.add(par.item(i));
+ }
+ }
+
+ return rt;
+ }
+ catch (Bounds ex)
+ {
+ throw new Error("Report this bug.");
+ }
+ }
+
+ /** {@inheritDoc} */
+ public Context parent()
+ {
+ return parent;
+ }
+
+ /** {@inheritDoc} */
+ public void set_one_value(String name, Any value)
+ {
+ properties.put(name, value);
+ }
+
+ /** {@inheritDoc} */
+ public void set_values(NVList values)
+ {
+ try
+ {
+ for (int i = 0; i < values.count(); i++)
+ {
+ properties.put(values.item(i).name(), values.item(i).value());
+ }
+ }
+ catch (Bounds ex)
+ {
+ throw new Error("Please report this bug.");
+ }
+ }
+}