Moving to root below branch label

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/search/AbstractResultSetRowIterator.java

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+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * 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.alfresco.repo.search;
+
+import org.alfresco.service.cmr.search.ResultSet;
+import org.alfresco.service.cmr.search.ResultSetRow;
+
+
+/**
+ * Iterate over the rows in a ResultSet
+ * 
+ * @author andyh
+ * 
+ */
+public abstract class AbstractResultSetRowIterator implements ResultSetRowIterator
+{
+    /**
+     * The result set
+     */
+    private ResultSet resultSet;
+
+    /**
+     * The current position
+     */
+    private int position = -1;
+
+    /**
+     * The maximum position
+     */
+    private int max;
+
+    /**
+     * Create an iterator over the result set. Follows stadard ListIterator
+     * conventions
+     * 
+     * @param resultSet
+     */
+    public AbstractResultSetRowIterator(ResultSet resultSet)
+    {
+        super();
+        this.resultSet = resultSet;
+        this.max = resultSet.length();
+    }
+
+    
+    
+    public ResultSet getResultSet()
+    {
+        return resultSet;
+    }
+    
+
+
+
+    /*
+     * ListIterator implementation
+     */
+    public boolean hasNext()
+    {
+        return position < (max - 1);
+    }
+
+    public boolean allowsReverse()
+    {
+        return true;
+    }
+
+    public boolean hasPrevious()
+    {
+        return position > 0;
+    }
+
+    abstract public ResultSetRow next();
+    
+    protected int moveToNextPosition()
+    {
+        return ++position;
+    }
+
+    abstract public ResultSetRow previous();
+    
+    protected int moveToPreviousPosition()
+    {
+        return --position;
+    }
+
+    public int nextIndex()
+    {
+        return position + 1;
+    }
+
+    public int previousIndex()
+    {
+        return position - 1;
+    }
+
+    /*
+     * Mutation is not supported
+     */
+
+    public void remove()
+    {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException();
+    }
+
+    public void set(ResultSetRow o)
+    {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException();
+    }
+
+    public void add(ResultSetRow o)
+    {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException();
+    }
+
+}