001    // Copyright 2006-2007 Daniel Gredler
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package net.sf.beanform.validator;
016    
017    import org.apache.tapestry.form.IFormComponent;
018    import org.apache.tapestry.form.ValidationMessages;
019    import org.apache.tapestry.form.validator.Min;
020    import org.apache.tapestry.valid.ValidatorException;
021    
022    /**
023     * Subclass of the {@link Min} validator that doesn't barf all over the
024     * place if it's handed a string instead of a number. Apparently Tapestry
025     * normally does some automatic type conversions depending on a value's
026     * setter and getter, but our setters and getters are for generic objects.
027     *
028     * @author Daniel Gredler
029     */
030    public class StringMin extends Min {
031    
032        public final static String NAME = "smin";
033    
034        public StringMin() {
035            super();
036        }
037    
038        public StringMin( String initializer ) {
039            super( initializer );
040        }
041    
042        @Override
043        public void validate( IFormComponent field, ValidationMessages messages, Object object )
044        throws ValidatorException {
045            if( object instanceof String ) {
046                object = Double.parseDouble( (String) object );
047            }
048            super.validate( field, messages, object );
049        }
050    
051        public void setSmin( double smin ) {
052            super.setMin( smin );
053        }
054    
055    }