Changeset 27

Timestamp:

Jan 16, 2011, 10:00:07 PM (14 years ago)

Author:

fmguler

Message:

Refs #3 - Ven.delete() is converted to the new format. Missing javadocs are entered.

Location:

trunk/fmgVen

Files:

• etc/test-db/test-db-changelog.xml (modified) (1 diff)
• src/com/fmguler/ven/QueryGenerator.java (modified) (4 diffs)
• src/com/fmguler/ven/Ven.java (modified) (4 diffs)
• test/com/fmguler/ven/sample/Sample.java (modified) (1 diff)

trunk/fmgVen/etc/test-db/test-db-changelog.xml

@@ -22 +22 @@
     <changeSet author="fmguler" id="3">
         <insert schemaName="public" tableName="some_domain_object">
+            <column name="id" value="1"/>
             <column name="name" value="name1"/>
             <column name="description" value="desc1"/>

trunk/fmgVen/src/com/fmguler/ven/QueryGenerator.java

@@ -27 +27 @@
 
 /**
- * Generates queries in the form of 'Convention over Configuration' of the specified class.
+ * Generates queries in the form of 'Convention over Configuration' for the specified objects.
  * @author Fatih Mehmet Güler
  */
@@ -53 +53 @@
     }
 
-    public String generateInsertQuery(Object object) throws VenException {
+    /**
+     * Generates insert query for the specified object
+     * @param object the object to generate insert query for
+     * @return the insert SQL query
+     */
+    public String generateInsertQuery(Object object) {
         BeanWrapper wr = new BeanWrapperImpl(object);
         String objectName = Convert.toSimpleName(object.getClass().getName());
@@ -90 +95 @@
 
     /**
-     * Generates insert/update query
-     * @return the insert update SQL query
+     * Generates update query for the specified object
+     * @param object the object to generate update query for
+     * @return the update SQL query
      */
     public String generateUpdateQuery(Object object) throws VenException {
@@ -114 +120 @@
         }
         query.deleteCharAt(query.length() - 1);
-        query.append(" where id = :id ;"); //TODO: remove the last comma
+        query.append(" where id = :id ;");
         return query.toString();
     }
 
+    /**
+     * Generates delete query for the specified object class
+     * @param objectClass the object class to generate query for
+     * @return the delete SQL query
+     */
+    public String generateDeleteQuery(Class objectClass){
+        StringBuffer query = new StringBuffer();
+        query.append("delete from ").append(Convert.toDB(Convert.toSimpleName(objectClass.getName()))).append(" where id = :id;");
+        return query.toString();
+    }
+        
+    /**
+     * Generates sequence query for the specified object
+     * @param object the objectc to generate sequence query for
+     * @return the SQL query to select next id
+     */
     public String generateSequenceQuery(Object object) throws VenException {
         String objectName = Convert.toSimpleName(object.getClass().getName());

trunk/fmgVen/src/com/fmguler/ven/Ven.java

@@ -20 +20 @@
 import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import javax.sql.DataSource;
 import org.springframework.beans.BeanWrapper;
@@ -54 +55 @@
 
     /**
-     * Save the object. If it has a "id" property it will be updated.
+     * Save the object. If it has a non null (or non zero) "id" property it will be updated.
      * It will be inserted otherwise.
      * <p>
@@ -78 +79 @@
     }
 
+    /**
+     * Delete the the object with the specified id of the specified objectClass type
+     * @param id the id of the object to be deleted
+     * @param objectClass the class of the object to be deleted
+     */
     public void delete(int id, Class objectClass) {
+        String query = generator.generateDeleteQuery(objectClass);
+        Map parameterMap = new HashMap();
+        parameterMap.put("id", new Integer(id));
+        template.update(query, parameterMap);
     }
 
@@ -86 +96 @@
     private boolean isObjectNew(Object object) throws VenException {
         BeanWrapper beanWrapper = new BeanWrapperImpl(object);
-        Object objectId = beanWrapper.getPropertyValue("id"); 
+        Object objectId = beanWrapper.getPropertyValue("id");
         if (objectId == null) return true;
         if (!(objectId instanceof Integer)) throw new VenException(VenException.EC_GENERATOR_OBJECT_ID_TYPE_INVALID);

trunk/fmgVen/test/com/fmguler/ven/sample/Sample.java

@@ -39 +39 @@
 public class Sample {
     public static void main(String[] args) {
+        //build the sample database
         buildDatabase();
+
+        //save an object
         testSave();
+        //delete an object
+        testDelete();
+
+        //rollback the sample database to original state
         rollbackDatabase();
     }