001    /**
002     * www.jcoverage.com
003     * Copyright (C)2003 jcoverage ltd.
004     *
005     * This file is part of jcoverage.
006     *
007     * jcoverage is free software; you can redistribute it and/or modify
008     * it under the terms of the GNU General Public License as published
009     * by the Free Software Foundation; either version 2 of the License,
010     * or (at your option) any later version.
011     *
012     * jcoverage is distributed in the hope that it will be useful, but
013     * WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015     * General Public License for more details.
016     *
017     * You should have received a copy of the GNU General Public License
018     * along with jcoverage; if not, write to the Free Software
019     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
020     * USA
021     *
022     */
023    package com.jcoverage.reporting;
024    
025    import org.apache.log4j.Logger;
026    
027    /**
028     * Instances of this class represent an information type.
029     * Like a database column, it has a name and a type.
030     * <p>
031     * A field's value can be defined to be any Java object, an int, double or boolean.
032     */
033    public class Column {
034      
035      static Logger logger=Logger.getLogger(Column.class);
036      
037      String label,classid,description;
038      Class type;
039    
040      public Column(String label,Class type) {
041        this(label,"",type);
042      }
043    
044      public Column(String label,String description,Class type) {
045        if (Object.class.isAssignableFrom(type) || type.equals(Integer.TYPE) || type.equals(Boolean.TYPE) || type.equals(Double.TYPE)) {
046          this.label=label;
047          this.description=description;
048          this.type=type;
049        } else {
050          throw new IllegalArgumentException("Attribute type cannot be "+type);
051        }
052      }
053    
054      public boolean isAcceptableValue(Object value) {
055        if (type.equals(Integer.TYPE) && value.getClass().equals(Integer.class)) {
056          return true;
057        }
058        if (type.equals(Double.TYPE) && value.getClass().equals(Double.class)) {
059          return true;
060        }
061        if (type.equals(Boolean.TYPE) && value.getClass().equals(Boolean.class)) {
062          return true;
063        }
064        return this.type.isAssignableFrom(value.getClass());
065      }
066    
067      public Object getType() {
068        return type;
069      }
070    
071      public String getLabel() {
072        return label;
073      }
074    
075      public String getDescription() {
076        return description;
077      }
078    
079      public String toString() {
080        return "[" + getLabel() + "]";
081      }
082    
083    }