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Added superBean

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Ziver Koc 2011-03-05 18:53:42 +00:00
parent 80c6a52c69
commit da83804fdd
1 changed files with 36 additions and 32 deletions
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52
src/zutil/db/bean/DBBean.java
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@ -43,7 +43,7 @@ import zutil.log.LogUtil;
* @author Ziver * @author Ziver
*/ */
public abstract class DBBean { public abstract class DBBean {
public static final Logger logger = LogUtil.getLogger(); private static final Logger logger = LogUtil.getLogger();
/** The id of the bean **/ /** The id of the bean **/
protected Long id; protected Long id;
@ -54,7 +54,10 @@ public abstract class DBBean {
@Retention(RetentionPolicy.RUNTIME) @Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE) @Target(ElementType.TYPE)
public @interface DBTable { public @interface DBTable {
/** This is the name of the table, SQL rules apply, No " or whitespace **/
String value(); String value();
/** Sets if the fields in the super classes is also part of the bean **/
boolean superBean() default false;
} }
/** /**
@ -86,7 +89,7 @@ public abstract class DBBean {
} }
/** This is a cache of all the initialized beans */ /** This is a cache of all the initialized beans */
private static HashMap<Class<? extends DBBean>,DBBeanConfig> beanConfigs = new HashMap<Class<? extends DBBean>,DBBeanConfig>(); private static HashMap<String,DBBeanConfig> beanConfigs = new HashMap<String,DBBeanConfig>();
/** This value is for preventing recursive loops when saving */ /** This value is for preventing recursive loops when saving */
protected boolean processing_save; protected boolean processing_save;
/** This value is for preventing recursive loops when updating */ /** This value is for preventing recursive loops when updating */
@ -103,30 +106,33 @@ public abstract class DBBean {
* @return all the fields except the ID field * @return all the fields except the ID field
*/ */
public static ArrayList<Field> getFields(Class<? extends DBBean> c){ public static ArrayList<Field> getFields(Class<? extends DBBean> c){
if( !beanConfigs.containsKey( c ) ) if( !beanConfigs.containsKey( c.getName() ) )
initBeanConfig( c ); initBeanConfig( c );
return beanConfigs.get( c ).fields; return beanConfigs.get( c.getName() ).fields;
} }
/** /**
* @return the configuration object for the specified class * @return the configuration object for the specified class
*/ */
protected static DBBeanConfig getBeanConfig(Class<? extends DBBean> c){ protected static DBBeanConfig getBeanConfig(Class<? extends DBBean> c){
if( !beanConfigs.containsKey( c ) ) if( !beanConfigs.containsKey( c.getName() ) )
initBeanConfig( c ); initBeanConfig( c );
return beanConfigs.get( c ); return beanConfigs.get( c.getName() );
} }
/** /**
* Caches the fields * Caches the fields
*/ */
private static void initBeanConfig(Class<? extends DBBean> c){ private static void initBeanConfig(Class<? extends DBBean> c){
Field[] fields = c.getDeclaredFields(); logger.fine("Initiating new DBBeanConfig( "+c.getName()+" )");
DBBeanConfig config = new DBBeanConfig(); DBBeanConfig config = new DBBeanConfig();
// Find the table name // Find the table name
if( c.getAnnotation(DBTable.class) != null ) DBTable tableAnn = c.getAnnotation(DBTable.class);
config.tableName = c.getAnnotation(DBTable.class).value().replace('\"', ' '); if( tableAnn != null )
// Add the fields in the bean config.tableName = tableAnn.value().replace('\"', '_');
// Add the fields in the bean and all the super classes fields
for(Class<?> cc = c; cc != DBBean.class ;cc = cc.getSuperclass()){
Field[] fields = cc.getDeclaredFields();
for( Field field : fields ){ for( Field field : fields ){
int mod = field.getModifiers(); int mod = field.getModifiers();
if( !Modifier.isTransient( mod ) && if( !Modifier.isTransient( mod ) &&
@ -134,12 +140,16 @@ public abstract class DBBean {
!Modifier.isFinal( mod ) && !Modifier.isFinal( mod ) &&
!Modifier.isStatic( mod ) && !Modifier.isStatic( mod ) &&
!Modifier.isInterface( mod ) && !Modifier.isInterface( mod ) &&
!Modifier.isNative( mod )){ !Modifier.isNative( mod ) &&
!config.fields.contains( field )){
config.fields.add( field ); config.fields.add( field );
} }
} }
if( tableAnn == null || !tableAnn.superBean() )
break;
}
beanConfigs.put(c, config); beanConfigs.put(c.getName(), config);
} }
/** /**
@ -163,7 +173,7 @@ public abstract class DBBean {
return; return;
processing_save = true; processing_save = true;
Class<? extends DBBean> c = this.getClass(); Class<? extends DBBean> c = this.getClass();
DBBeanConfig config = beanConfigs.get(c); DBBeanConfig config = getBeanConfig( c );
try { try {
Long id = this.getId(); Long id = this.getId();
// Generate the SQL // Generate the SQL
@ -248,7 +258,7 @@ public abstract class DBBean {
} }
// Get the Sub object configuration // Get the Sub object configuration
if(subConfig == null) if(subConfig == null)
subConfig = beanConfigs.get( subobj.getClass() ); subConfig = getBeanConfig( subobj.getClass() );
// Save links in link table // Save links in link table
String subsql = ""; String subsql = "";
if( subtable.equals(subConfig.tableName) ) if( subtable.equals(subConfig.tableName) )
@ -280,7 +290,7 @@ public abstract class DBBean {
*/ */
public void delete(DBConnection db) throws SQLException{ public void delete(DBConnection db) throws SQLException{
Class<? extends DBBean> c = this.getClass(); Class<? extends DBBean> c = this.getClass();
DBBeanConfig config = beanConfigs.get(c); DBBeanConfig config = getBeanConfig( c );
if( this.getId() == null ) if( this.getId() == null )
throw new NoSuchElementException("ID field is null( Has the bean been saved?)!"); throw new NoSuchElementException("ID field is null( Has the bean been saved?)!");
@ -304,9 +314,7 @@ public abstract class DBBean {
*/ */
public static <T extends DBBean> List<T> load(DBConnection db, Class<T> c) throws SQLException { public static <T extends DBBean> List<T> load(DBConnection db, Class<T> c) throws SQLException {
// Initiate a BeanConfig if there is non // Initiate a BeanConfig if there is non
if( !beanConfigs.containsKey( c ) ) DBBeanConfig config = getBeanConfig( c );
initBeanConfig( c );
DBBeanConfig config = beanConfigs.get(c);
// Generate query // Generate query
String sql = "SELECT * FROM "+config.tableName; String sql = "SELECT * FROM "+config.tableName;
logger.fine("Load All query("+c.getName()+"): "+sql); logger.fine("Load All query("+c.getName()+"): "+sql);
@ -326,9 +334,7 @@ public abstract class DBBean {
*/ */
public static <T extends DBBean> T load(DBConnection db, Class<T> c, long id) throws SQLException { public static <T extends DBBean> T load(DBConnection db, Class<T> c, long id) throws SQLException {
// Initiate a BeanConfig if there is non // Initiate a BeanConfig if there is non
if( !beanConfigs.containsKey( c ) ) DBBeanConfig config = getBeanConfig( c );
initBeanConfig( c );
DBBeanConfig config = beanConfigs.get(c);
// Generate query // Generate query
String sql = "SELECT * FROM "+config.tableName+" WHERE id=? LIMIT 1"; String sql = "SELECT * FROM "+config.tableName+" WHERE id=? LIMIT 1";
logger.fine("Load query("+c.getName()+" id:"+id+"): "+sql); logger.fine("Load query("+c.getName()+" id:"+id+"): "+sql);
@ -344,9 +350,7 @@ public abstract class DBBean {
* WARNING: Experimental * WARNING: Experimental
*/ */
public static void create(DBConnection sql, Class<? extends DBBean> c) throws SQLException{ public static void create(DBConnection sql, Class<? extends DBBean> c) throws SQLException{
if( !beanConfigs.containsKey( c ) ) DBBeanConfig config = getBeanConfig( c );
initBeanConfig( c );
DBBeanConfig config = beanConfigs.get(c);
// Generate the SQL // Generate the SQL
StringBuilder query = new StringBuilder(); StringBuilder query = new StringBuilder();