Java 为用户定义的Oracle表类型编写MyBatis3 TypeHandler
我很难编写一个TypeHandler来将Oracle用户定义的表类型转换为Java对象列表 数据库类型和功能规范的定义如下:Java 为用户定义的Oracle表类型编写MyBatis3 TypeHandler,java,oracle,mybatis,Java,Oracle,Mybatis,我很难编写一个TypeHandler来将Oracle用户定义的表类型转换为Java对象列表 数据库类型和功能规范的定义如下: CREATE OR REPLACE TYPE MySchema.MY_TYPE IS OBJECT ( first_name VARCHAR2(50), last_name VARCHAR2(50) ); CREATE OR REPLACE TYPE MySchema.MY_TYPE_TBL IS TABLE OF MY_TYPE; FU
CREATE OR REPLACE TYPE MySchema.MY_TYPE IS OBJECT (
first_name VARCHAR2(50),
last_name VARCHAR2(50)
);
CREATE OR REPLACE TYPE MySchema.MY_TYPE_TBL IS TABLE OF MY_TYPE;
FUNCTION GET_MY_STUFF(my_user_name IN VARCHAR2) RETURN MySchema.MY_TYPE_TABLE;
我有一个MyBatis映射器,其中包含以下调用:
<resultMap id="myResultMap" type="GetMyStuffResult" />
<select id="getMyStuff" statementType="CALLABLE" parameterType="map">
{#{return_value, mode=OUT,
typeHandler=MyStuffToList
jdbcTypeName=MySchema.MY_TYPE_TABLE,
jdbcType=ARRAY} =
call MySchema.MyPackage.GET_MY_STUFF (
my_user_name => #{userName, mode=IN, jdbcType=VARCHAR}
)}
</select>
{#{返回值,mode=OUT,
typeHandler=MyStuffToList
jdbcTypeName=MySchema.MY_TYPE_表,
jdbcType=ARRAY}=
打电话给MySchema.MyPackage.GET_我的东西(
my_user_name=>#{userName,mode=IN,jdbcType=VARCHAR}
)}
最后,我尝试编写一个TypeHandler,但在getResult覆盖中失败得很惨:
public class MyStuffToList implements TypeHandler<List<GetMyStuffResult>> {
// Other Overrides Here
@Override
public List<GetMyStuffResult> getResult(CallableStatement cs, int columnIndex)
throws SQLException {
List<GetMyStuffResult> results = new ArrayList<GetMyStuffResult>();
Array array = cs.getArray(columnIndex);
// HOW DO I CONVERT THE Array TO List<GetMyStuffResult> ???
return results;
}
}
公共类MyStuffToList实现类型处理程序{
//这里有其他覆盖
@凌驾
公共列表getResult(CallableStatement cs,int columnIndex)
抛出SQLException{
列表结果=新建ArrayList();
Array Array=cs.getArray(columnIndex);
//如何将数组转换为列表???
返回结果;
}
}
我似乎无法从传递到
TypeHandler
的CallableStatement
中得到我想要的列表。以下是我为使其正常工作所做的
TypeHandler
需要创建引用单个Oracle类型(而不是表类型)的类型映射:
当然,您需要进行适当的空值和数据检查等。以下是我为使其正常工作所做的工作
TypeHandler
需要创建引用单个Oracle类型(而不是表类型)的类型映射:
当然,您需要进行适当的空值和数据检查,等等
public class MyStuffToList implements TypeHandler<List<GetMyStuffResult>> {
// Other Overrides Here
@Override
public List<GetMyStuffResult> getResult(CallableStatement cs, int columnIndex)
throws SQLException {
List<GetMyStuffResult> results = new ArrayList<GetMyStuffResult>();
Array array = cs.getArray(columnIndex);
// Add a TypeMap to map the Oracle object to a Java class
Map<String, Class<?>> typeMap = new HashMap<String, Class<?>>();
typeMap.put("MySchema.MY_TYPE", GetMyStuffResult.class);
// Get an array of Java objects using that type map
Object[] javaObjects = (Object[]) array.getArray(typeMap);
// add each of these converted objects to the results list
for (Object javaObject : javaObjects) {
results.add((GetMyStuffResult) javaObject);
}
return results;
}
}
public class GetMyStuffResult implements ORAData, ORADataFactory {
string first_name;
string last_name;
// Assume appropriate getters and setters for all properties here
// public String getFirstName() {
// |
// |
// Implement ORAData and ORADataFactory
public ORAData create(Datum datum, int sqlType throws SQLException {
GetMyStuffResult result = new GetMyStuffResult();
Struct javaStruct = (Struct) datum;
Object[] attributes = javaStruct.getAttributes();
// ORDER MATTERS HERE - must be in order defined in Oracle
result.setFirstName(attributes[0].toString());
result.setLastName(attributes[1].toString());
}
public Datum toDatum(Connection conn) throws SQLException {
return null;
}
}