001 /**
002 * Copyright 2005-2013 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package org.kuali.rice.devtools.generators.jpa;
017
018 import org.kuali.rice.krad.bo.PersistableBusinessObject;
019 import org.kuali.rice.krad.bo.PersistableBusinessObjectBase;
020
021 import javax.persistence.AttributeOverride;
022 import javax.persistence.AttributeOverrides;
023 import javax.persistence.Column;
024 import javax.persistence.Id;
025 import javax.persistence.JoinColumn;
026 import javax.persistence.JoinColumns;
027 import javax.persistence.OneToMany;
028 import javax.persistence.Table;
029 import java.lang.reflect.Field;
030 import java.util.ArrayList;
031 import java.util.HashMap;
032 import java.util.List;
033 import java.util.Map;
034
035 /**
036 * This is a description of what this class does - kellerj don't forget to fill this in.
037 *
038 * @author Kuali Rice Team (rice.collab@kuali.org)
039 *
040 */
041 public class JpaToDdl {
042
043 public static void main( String[] args ) throws ClassNotFoundException {
044
045 Class<? extends PersistableBusinessObjectBase> clazz =
046 (Class<? extends PersistableBusinessObjectBase>) Class.forName(args[0]);
047
048
049 StringBuffer sb = new StringBuffer( 1000 );
050 StringBuffer pk = new StringBuffer();
051 Table tableAnnotation = (Table)clazz.getAnnotation( Table.class );
052
053 sb.append( "CREATE TABLE " ).append( tableAnnotation.name().toLowerCase() ).append( " (\r\n" );
054
055 getClassFields( tableAnnotation.name().toLowerCase(), clazz, sb, pk, null );
056 pk.append( " )\r\n" );
057 sb.append( pk );
058 sb.append( ")\r\n" );
059 sb.append( "/\r\n" );
060 System.out.println( sb.toString() );
061 sb.setLength( 0 );
062 getReferences( clazz, sb );
063 System.out.println( sb.toString() );
064 }
065
066
067 private static String javaToSqlDataType( Class<? extends Object> dataType ) {
068 if ( dataType.equals( String.class ) ) {
069 return "VARCHAR(40)";
070 } else if (dataType.equals(Long.class) || dataType.equals(Integer.class)) {
071 return "NUMBER(?,?)";
072 } else if (dataType.equals(java.util.Date.class) || dataType.equals(java.sql.Date.class)) {
073 return "DATE";
074 } else if (dataType.equals(java.sql.Timestamp.class)) {
075 return "TIMESTAMP";
076 }
077 return "VARCHAR(40)";
078 }
079
080 private static void getClassFields( String tableName, Class<? extends Object> clazz, StringBuffer sb, StringBuffer pk, Map<String,AttributeOverride> overrides ) {
081 // first get annotation overrides
082 if ( overrides == null ) {
083 overrides = new HashMap<String,AttributeOverride>();
084 }
085 if ( clazz.getAnnotation( AttributeOverride.class ) != null ) {
086 AttributeOverride ao = (AttributeOverride)clazz.getAnnotation( AttributeOverride.class );
087 if ( !overrides.containsKey(ao.name() ) ) {
088 overrides.put(ao.name(), ao);
089 }
090 }
091 if ( clazz.getAnnotation( AttributeOverrides.class ) != null ) {
092 for ( AttributeOverride ao : ((AttributeOverrides)clazz.getAnnotation( AttributeOverrides.class )).value() ) {
093 if ( !overrides.containsKey(ao.name() ) ) {
094 overrides.put(ao.name(), ao);
095 }
096 overrides.put(ao.name(),ao);
097 }
098 }
099 for ( Field field : clazz.getDeclaredFields() ) {
100 Id id = (Id)field.getAnnotation( Id.class );
101 Column column = (Column)field.getAnnotation( Column.class );
102 if ( column != null ) {
103 sb.append( "\t" );
104 if ( field.getName().equals( "objectId" ) ) {
105 sb.append( "obj_id\t\tVARCHAR2(36) NOT NULL" );
106 } else if ( field.getName().equals( "versionNumber" ) ) {
107 sb.append( "ver_nbr\t\tNUMBER(8,0)" );
108 } else {
109 if ( overrides.containsKey(field.getName() ) ) {
110 sb.append( overrides.get(field.getName()).column().name().toLowerCase() );
111 } else {
112 sb.append( column.name().toLowerCase() );
113 }
114 sb.append( "\t\t" );
115 if ( field.getType() == boolean.class ) {
116 sb.append( "VARCHAR2(1) DEFAULT 'Y'" );
117 } else {
118 sb.append( javaToSqlDataType( field.getType() ) );
119 }
120 if ( id != null ) {
121 if ( pk.length() == 0 ) {
122 pk.append( "\tCONSTRAINT " + tableName + "p1 PRIMARY KEY ( " );
123 } else {
124 pk.append( ", " );
125 }
126 if ( overrides.containsKey(field.getName() ) ) {
127 pk.append( overrides.get(field.getName()).column().name().toLowerCase() );
128 } else {
129 pk.append( column.name().toLowerCase() );
130 }
131 }
132 }
133 sb.append( ",\r\n" );
134 }
135 }
136 if ( !clazz.equals( PersistableBusinessObject.class ) && clazz.getSuperclass() != null ) {
137 getClassFields( tableName, clazz.getSuperclass(), sb, pk, overrides );
138 }
139 }
140
141 private static void getReferences( Class<? extends Object> clazz, StringBuffer sb ) {
142 for ( Field field : clazz.getDeclaredFields() ) {
143 JoinColumns multiKey = (JoinColumns)field.getAnnotation( JoinColumns.class );
144 JoinColumn singleKey = (JoinColumn)field.getAnnotation( JoinColumn.class );
145 if ( multiKey != null || singleKey != null ) {
146 List<JoinColumn> keys = new ArrayList<JoinColumn>();
147 if ( singleKey != null ) {
148 keys.add( singleKey );
149 }
150 if ( multiKey != null ) {
151 for ( JoinColumn col : multiKey.value() ) {
152 keys.add( col );
153 }
154 }
155 OneToMany oneToMany = field.getAnnotation( OneToMany.class );
156 if ( oneToMany != null ) {
157 sb.append( "ALTER TABLE " );
158 sb.append( field.getName() );
159 sb.append( "\" element-class-ref=\"" );
160 sb.append( oneToMany.targetEntity().getName() );
161 sb.append( "\" collection-class=\"org.apache.ojb.broker.util.collections.ManageableArrayList\" auto-retrieve=\"true\" auto-update=\"object\" auto-delete=\"object\" proxy=\"true\">\r\n" );
162 for ( JoinColumn col : keys ) {
163 sb.append( " <inverse-foreignkey field-ref=\"" );
164 sb.append( getPropertyFromField( clazz, col.name() ) );
165 sb.append( "\" />\r\n" );
166 }
167 sb.append( " </collection-descriptor>\r\n" );
168 }
169 }
170 }
171 }
172
173 private static String getPropertyFromField( Class<? extends Object> clazz, String colName ) {
174 for ( Field field : clazz.getDeclaredFields() ) {
175 Column column = (Column)field.getAnnotation( Column.class );
176 if ( column != null ) {
177 if ( column.name().equals( colName ) ) {
178 return field.getName();
179 }
180 }
181 }
182 return "";
183 }
184 }