dgraham 2003/10/15 20:05:10
Modified: dbutils/src/java/org/apache/commons/dbutils BeanHandler.java
Log:
Added javadoc, use new version of DbUtils.resultSetToBean().
Revision Changes Path
1.3 +39 -29
jakarta-commons-sandbox/dbutils/src/java/org/apache/commons/dbutils/BeanHandler.java
Index: BeanHandler.java
===================================================================
RCS file:
/home/cvs/jakarta-commons-sandbox/dbutils/src/java/org/apache/commons/dbutils/BeanHandler.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -r1.2 -r1.3
--- BeanHandler.java 15 Oct 2003 02:33:47 -0000 1.2
+++ BeanHandler.java 16 Oct 2003 03:05:10 -0000 1.3
@@ -57,41 +57,51 @@
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
-
+
package org.apache.commons.dbutils;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
/**
- *
- * @author baliuka
+ * <code>ResultSetHandler</code> implementation that converts the first
+ * <code>ResultSet</code> row into a JavaBean.
+ *
+ * @see ResultSetHandler
+ * @author Juozas Baliuka
+ * @author David Graham
*/
public class BeanHandler implements ResultSetHandler {
-
- private Class type;
-
+
+ /**
+ * The Class of beans produced by this handler.
+ */
+ private Class type = null;
+
/**
* Creates a new instance of BeanHandler.
+ *
+ * @param type The Class that objects returned from <code>handle()</code>
+ * are created from.
*/
public BeanHandler(Class type) {
this.type = type;
}
-
- public Object handle(java.sql.ResultSet rs, Object[] params, Object userObject)
throws java.sql.SQLException {
- Object bean;
- if(rs.next()){
- try{
- bean = type.newInstance();
- }catch(Exception e){
- throw new DbException(e);
- }
- DbUtils.resultSetToBean(rs, bean);
- if(rs.next()){
- throw new java.sql.SQLException();
- }
- return bean;
-
- }
- throw new java.sql.SQLException();
-
- }
-
+
+ /**
+ * Convert the first row of the <code>ResultSet</code> into a bean with the
+ * <code>Class</code> given in the constructor.
+ *
+ * @return An initialized JavaBean or <code>null</code> if there were no
+ * rows in the <code>ResultSet</code>.
+ *
+ * @throws SQLException
+ * @see org.apache.commons.dbutils.ResultSetHandler#handle(java.sql.ResultSet,
java.lang.Object[], java.lang.Object)
+ */
+ public Object handle(ResultSet rs, Object[] params, Object userObject)
+ throws SQLException {
+
+ return rs.next() ? DbUtils.resultSetToBean(rs, this.type) : null;
+ }
+
}
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