/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.server.core.partition.impl.btree.gui;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import javax.swing.tree.TreeNode;
import org.apache.directory.shared.ldap.filter.BranchNode;
import org.apache.directory.shared.ldap.filter.ExprNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A node representing an entry.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev: 638228 $
*/
public class ASTNode implements TreeNode
{
private static final Logger log = LoggerFactory.getLogger( ASTNode.class );
private final ASTNode parent;
private final ExprNode exprNode;
private final List<ASTNode> children;
public ASTNode(ASTNode parent, ExprNode exprNode)
{
children = new ArrayList<ASTNode>( 2 );
this.exprNode = exprNode;
if ( parent == null )
{
this.parent = this;
}
else
{
this.parent = parent;
}
try
{
if ( exprNode.isLeaf() )
{
return;
}
BranchNode branch = ( BranchNode ) exprNode;
for ( ExprNode child:branch.getChildren() )
{
children.add( new ASTNode( this, child ) );
}
}
catch ( Exception e )
{
// FIXME What exception could be thrown here?
log.warn( "Unexpected exception: parent=" + parent + ", exprNode=" + exprNode, e );
}
}
public Enumeration<ASTNode> children()
{
return Collections.enumeration( children );
}
public boolean getAllowsChildren()
{
return !exprNode.isLeaf();
}
public TreeNode getChildAt( int childIndex )
{
return children.get( childIndex );
}
public int getChildCount()
{
return children.size();
}
public int getIndex( TreeNode child )
{
return children.indexOf( child );
}
public TreeNode getParent()
{
return parent;
}
public boolean isLeaf()
{
return children.size() <= 0;
}
public String toString()
{
return exprNode.toString();
}
public ExprNode getExprNode()
{
return exprNode;
}
}