Clover coverage report - Code Coverage for tapestry-contrib release 4.0-alpha-3
Coverage timestamp: Mon May 16 2005 09:12:41 EDT
file stats: LOC: 65   Methods: 2
NCLOC: 18   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
ColumnComparator.java - 0% 0% 0%
coverage
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 // Copyright 2004, 2005 The Apache Software Foundation
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 //
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 // Licensed under the Apache License, Version 2.0 (the "License");
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 // you may not use this file except in compliance with the License.
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 // You may obtain a copy of the License at
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 //
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 //     http://www.apache.org/licenses/LICENSE-2.0
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 //
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 // Unless required by applicable law or agreed to in writing, software
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 // distributed under the License is distributed on an "AS IS" BASIS,
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 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 // See the License for the specific language governing permissions and
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 // limitations under the License.
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 package org.apache.tapestry.contrib.table.model.simple;
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 import java.util.Comparator;
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 /**
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  * In order to provide more generic behaviour, ITableColumn 
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  * has no "column value" concept. The comparator it returns 
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  * compares two table rows, rather than values specific to the column. 
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  * <p>
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  * SimpleTableColumn introduces the concept of "column value" and 
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  * allows one to extract that "column value" from the row using 
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  * the getColumnValue() method. In practice comparisons are also typically 
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  * done between these values rather than the full row objects.
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  * <p>
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  * This comparator extracts the column values from the rows passed 
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  * and uses the provided comparator to compare the values.
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  * It therefore allows a comparator designed for comparing column values to be
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  * quickly wrapped and used as a comparator comparing rows, which is what
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  * ITableColumn is expected to return.
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  * <p>
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  * Example:
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  * <p>
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  * objColumn.setComparator(new ColumnComparator(objColumn, objBeanComparator));    
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  * 
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  * @author mindbridge
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  *
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  */
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 public class ColumnComparator implements Comparator
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 {
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     private SimpleTableColumn m_objColumn;
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     private Comparator m_objComparator;
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     public ColumnComparator(SimpleTableColumn objColumn, Comparator objComparator)
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     {
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         m_objColumn = objColumn;
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         m_objComparator = objComparator;
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     }
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     /**
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      * @see java.util.Comparator#compare(Object, Object)
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      */
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     public int compare(Object objRow1, Object objRow2)
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     {
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         Object objValue1 = m_objColumn.getColumnValue(objRow1);
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         Object objValue2 = m_objColumn.getColumnValue(objRow2);
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         return m_objComparator.compare(objValue1, objValue2);
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     }
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 }
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