Coverage report

  %line %branch
org.apache.torque.engine.database.model.Unique
11% 
67% 

 1  
 package org.apache.torque.engine.database.model;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
 6  
  * Licensed under the Apache License, Version 2.0 (the "License")
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 import java.util.List;
 20  
 
 21  
 /**
 22  
  * Information about unique columns of a table.  This class assumes
 23  
  * that in the underlying RDBMS, unique constraints and unique indices
 24  
  * are roughly equivalent.  For example, adding a unique constraint to
 25  
  * a column also creates an index on that column (this is known to be
 26  
  * true for MySQL and Oracle).
 27  
  *
 28  
  * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
 29  
  * @author <a href="mailto:dlr@collab.net">Daniel Rall</a>
 30  
  * @version $Id: Unique.java 239624 2005-08-24 12:18:03Z henning $
 31  
  */
 32  9
 public class Unique extends Index
 33  
 {
 34  
     /**
 35  
      * Returns <code>true</code>.
 36  
      *
 37  
      * @return true
 38  
      */
 39  
     public final boolean isUnique()
 40  
     {
 41  0
         return true;
 42  
     }
 43  
 
 44  
     /**
 45  
      * String representation of the index. This is an xml representation.
 46  
      *
 47  
      * @return string representation in xml
 48  
      */
 49  
     public String toString()
 50  
     {
 51  0
         StringBuffer result = new StringBuffer();
 52  0
         result.append(" <unique name=\"")
 53  
             .append(getName())
 54  
             .append("\">\n");
 55  
 
 56  0
         List columns = getColumns();
 57  0
         for (int i = 0; i < columns.size(); i++)
 58  
         {
 59  0
             result.append("  <unique-column name=\"")
 60  
                 .append(columns.get(i))
 61  
                 .append("\"/>\n");
 62  
         }
 63  0
         result.append(" </unique>\n");
 64  0
         return result.toString();
 65  
     }
 66  
 }

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