Initial revision

From-SVN: r102074

libjava/classpath/gnu/java/security/x509/PolicyNodeImpl.java

@@ -0,0 +1,214 @@
+/* PolicyNodeImpl.java -- An implementation of a policy tree node.
+   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.java.security.x509;
+
+import java.security.cert.PolicyNode;
+import java.security.cert.PolicyQualifierInfo;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+
+public final class PolicyNodeImpl implements PolicyNode
+{
+
+  // Fields.
+  // -------------------------------------------------------------------------
+
+  private String policy;
+  private final Set expectedPolicies;
+  private final Set qualifiers;
+  private final Set children;
+  private PolicyNodeImpl parent;
+  private int depth;
+  private boolean critical;
+  private boolean readOnly;
+
+  // Constructors.
+  // -------------------------------------------------------------------------
+
+  public PolicyNodeImpl()
+  {
+    expectedPolicies = new HashSet();
+    qualifiers = new HashSet();
+    children = new HashSet();
+    readOnly = false;
+    critical = false;
+  }
+
+  // Instance methods.
+  // -------------------------------------------------------------------------
+
+  public void addChild(PolicyNodeImpl node)
+  {
+    if (readOnly)
+      throw new IllegalStateException("read only");
+    if (node.getParent() != null)
+      throw new IllegalStateException("already a child node");
+    node.parent = this;
+    node.setDepth(depth + 1);
+    children.add(node);
+  }
+
+  public Iterator getChildren()
+  {
+    return Collections.unmodifiableSet(children).iterator();
+  }
+
+  public int getDepth()
+  {
+    return depth;
+  }
+
+  public void setDepth(int depth)
+  {
+    if (readOnly)
+      throw new IllegalStateException("read only");
+    this.depth = depth;
+  }
+
+  public void addAllExpectedPolicies(Set policies)
+  {
+    if (readOnly)
+      throw new IllegalStateException("read only");
+    expectedPolicies.addAll(policies);
+  }
+
+  public void addExpectedPolicy(String policy)
+  {
+    if (readOnly)
+      throw new IllegalStateException("read only");
+    expectedPolicies.add(policy);
+  }
+
+  public Set getExpectedPolicies()
+  {
+    return Collections.unmodifiableSet(expectedPolicies);
+  }
+
+  public PolicyNode getParent()
+  {
+    return parent;
+  }
+
+  public void addAllPolicyQualifiers (Collection qualifiers)
+  {
+    for (Iterator it = qualifiers.iterator(); it.hasNext(); )
+      {
+        if (!(it.next() instanceof PolicyQualifierInfo))
+          throw new IllegalArgumentException ("can only add PolicyQualifierInfos");
+      }
+    qualifiers.addAll (qualifiers);
+  }
+
+  public void addPolicyQualifier (PolicyQualifierInfo qualifier)
+  {
+    if (readOnly)
+      throw new IllegalStateException("read only");
+    qualifiers.add(qualifier);
+  }
+
+  public Set getPolicyQualifiers()
+  {
+    return Collections.unmodifiableSet(qualifiers);
+  }
+
+  public String getValidPolicy()
+  {
+    return policy;
+  }
+
+  public void setValidPolicy(String policy)
+  {
+    if (readOnly)
+      throw new IllegalStateException("read only");
+    this.policy = policy;
+  }
+
+  public boolean isCritical()
+  {
+    return critical;
+  }
+
+  public void setCritical(boolean critical)
+  {
+    if (readOnly)
+      throw new IllegalStateException("read only");
+    this.critical = critical;
+  }
+
+  public void setReadOnly()
+  {
+    if (readOnly)
+      return;
+    readOnly = true;
+    for (Iterator it = getChildren(); it.hasNext(); )
+      ((PolicyNodeImpl) it.next()).setReadOnly();
+  }
+
+  public String toString()
+  {
+    StringBuffer buf = new StringBuffer();
+    for (int i = 0; i < depth; i++)
+      buf.append("  ");
+    buf.append("(");
+    buf.append(PolicyNodeImpl.class.getName());
+    buf.append(" (oid ");
+    buf.append(policy);
+    buf.append(") (depth ");
+    buf.append(depth);
+    buf.append(") (qualifiers ");
+    buf.append(qualifiers);
+    buf.append(") (critical ");
+    buf.append(critical);
+    buf.append(") (expectedPolicies ");
+    buf.append(expectedPolicies);
+    buf.append(") (children (");
+    final String nl = System.getProperty("line.separator");
+    for (Iterator it = getChildren(); it.hasNext(); )
+      {
+        buf.append(nl);
+        buf.append(it.next().toString());
+      }
+    buf.append(")))");
+    return buf.toString();
+  }
+}