Initial revision

From-SVN: r102074
2005-07-16 00:30:23 +00:00
parent 6f4434b39b
commit f911ba985a
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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.");
+      }
+  }
+}