Added type handler scanning

Author: emacarron

src/main/java/org/mybatis/spring/SqlSessionFactoryBean.java

@@ -85,6 +85,8 @@ public class SqlSessionFactoryBean implements FactoryBean<SqlSessionFactory>, In
     private Interceptor[] plugins;
 
     private TypeHandler[] typeHandlers;
+    
+    private String typeHandlersPackage;
 
     private Class<?>[] typeAliases;
 
@@ -114,6 +116,18 @@ public void setTypeAliasesPackage(String typeAliasesPackage) {
         this.typeAliasesPackage = typeAliasesPackage;
     }
 
+	/**
+	 * Packages to search for type handlers.
+	 * 
+	 * @since 1.0.1
+	 * 
+	 * @param typeHandlersPackage package to scan for type handlers
+	 * 
+	 */
+    public void setTypeHandlersPackage(String typeHandlersPackage) {
+        this.typeHandlersPackage = typeHandlersPackage;
+    }
+    
 	/**
 	 * Set type handlers. They must be annotated with {@code MappedTypes} and optionally with {@code MappedJdbcTypes}
 	 * 
@@ -308,6 +322,17 @@ protected SqlSessionFactory buildSqlSessionFactory() throws IOException {
             }
         }
 
+        if (StringUtils.hasLength(this.typeHandlersPackage)) {
+            String[] typeHandlersPackageArray = StringUtils.tokenizeToStringArray(this.typeHandlersPackage, 
+                ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);
+            for (String packageToScan : typeHandlersPackageArray ) {
+                configuration.getTypeHandlerRegistry().register(packageToScan);    
+                if (this.logger.isDebugEnabled()) {
+                    this.logger.debug("Scanned package: '" + packageToScan + "' for type handlers");
+                }
+            }
+        }
+        
         if (!ObjectUtils.isEmpty(this.typeHandlers)) {
             for (TypeHandler typeHandler : this.typeHandlers) {
                 configuration.getTypeHandlerRegistry().register(typeHandler);

src/test/java/org/mybatis/spring/SqlSessionFactoryBeanTest.java

@@ -21,6 +21,7 @@
 import static org.junit.Assert.assertSame;
 import static org.junit.Assert.assertTrue;
 
+import java.math.BigDecimal;
 import java.math.BigInteger;
 
 import org.apache.ibatis.session.SqlSessionFactory;
@@ -207,6 +208,16 @@ public void testSearchATypeAliasPackage() throws Exception {
         typeAliasRegistry.resolveAlias("testAlias2");
     }
 
+    @Test
+    public void testSearchATypeHandlerPackage() throws Exception {
+        setupFactoryBean();
+        factoryBean.setTypeHandlersPackage("org/mybatis/spring/type");
+
+        TypeHandlerRegistry typeHandlerRegistry = factoryBean.getObject().getConfiguration().getTypeHandlerRegistry();
+        assertTrue(typeHandlerRegistry.hasTypeHandler(BigInteger.class));
+        assertTrue(typeHandlerRegistry.hasTypeHandler(BigDecimal.class));
+    }
+    
     private void assertDefaultConfig(SqlSessionFactory factory) {
         assertConfig(factory, SqlSessionFactoryBean.class.getSimpleName(),
                 org.mybatis.spring.transaction.SpringManagedTransactionFactory.class);

src/test/java/org/mybatis/spring/type/DummyTypeHandler2.java

@@ -0,0 +1,46 @@
+/*
+ *    Copyright 2010-2011 The myBatis Team
+ *
+ *    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 org.mybatis.spring.type;
+
+import java.math.BigDecimal;
+import java.sql.CallableStatement;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import org.apache.ibatis.type.JdbcType;
+import org.apache.ibatis.type.MappedTypes;
+import org.apache.ibatis.type.TypeHandler;
+
+/**
+* @version $Id: MyBatisSampleTest.java 2697 2010-10-14 13:04:41Z eduardo.macarron $
+*/
+@MappedTypes(BigDecimal.class)
+public class DummyTypeHandler2 implements TypeHandler {
+
+    public void setParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException {
+    }
+
+    public Object getResult(ResultSet rs, String columnName) throws SQLException {
+        return null;
+    }
+
+    public Object getResult(CallableStatement cs, int columnIndex) throws SQLException {
+        return null;
+    }
+
+}