// Copyright 2006 Daniel Gredler

 //

 // Licensed under the Apache License, Version 2.0 (the "License");

 // you may not use this file except in compliance with the License.

 // You may obtain a copy of the License at

 //

 //     http://www.apache.org/licenses/LICENSE-2.0

 //

 // 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 net.sf.beanform.integration;

 import java.util.SortedMap;

 import java.util.TreeMap;

 import javax.persistence.Basic;

 import javax.persistence.Column;

 import net.sf.beanform.prop.BeanProperty;

 /**

  * Provides integration with EJB3 annotations.

  *

  * @see http://java.sun.com/javaee/5/docs/api/javax/persistence/package-summary.html

  * @author Daniel Gredler

  */

 public class Ejb3Integrator implements Integrator {

     public static final boolean COLUMN_NULLABLE_DEFAULT = true;

     public static final int     COLUMN_LENGTH_DEFAULT = 255;

     public static final boolean BASIC_OPTIONAL_DEFAULT = true;

     public SortedMap<String, String> getValidation( BeanProperty prop ) {

         SortedMap<String, String> validations = new TreeMap<String, String>();

         Column c = prop.getAnnotation( Column.class );

         if( c != null ) {

             if( c.nullable() == false ) {

                 validations.put( REQUIRED, REQUIRED );

             }

             if( prop.isString() ) {

                 int maxLength = c.length();

                 validations.put( MAX_LENGTH, MAX_LENGTH + "=" + maxLength );

             }

         }

         Basic b = prop.getAnnotation( Basic.class );

         if( b != null ) {

             if( b.optional() == false ) {

                 validations.put( REQUIRED, REQUIRED );

             }

         }

         return validations;

     }

     public Integer getMaxLength( BeanProperty prop ) {

         Integer maxLength = null;

         Column c = prop.getAnnotation( Column.class );

         if( c != null ) {

             maxLength = c.length();

         }

         return maxLength;

     }

     public boolean isNullable( BeanProperty prop ) {

         boolean nullable = true;

         Column c = prop.getAnnotation( Column.class );

         if( c != null ) {

             if( c.nullable() == false ) {

                 nullable = false;

             }

         }

         Basic b = prop.getAnnotation( Basic.class );

         if( b != null ) {

             if( b.optional() == false ) {

                 nullable = false;

             }

         }

         return nullable;

     }

 }