Custom TypeHandler

JdbcTypeHandlerManager

Method	Description
appendHandler	Parameter 1: Specify the type to be processed, Parameter 2: Specific typeHandler processing, Parameter 3: Whether to replace the original one if it exists
getHandler	Get the corresponding typeHandler processor according to type
getHandlerByHandlerClass	Get the corresponding typeHandler processor according to TypeHandler type

JdbcTypeHandler

Method	Description
getValue	Get the corresponding result
setParameter	Set JDBC parameters

JdbcTypeHandlerReplaceConfigurer

Method	Description
replace	Whether to replace if it already exists
allowTypes	Set<Class<?>> What types can be replaced

How to Add

Manually Add

• First create your own JdbcTypeHandler
• Replace during startup

JdbcTypeHandlerManager jdbcTypeHandlerManager = easyQuery.getRuntimeContext().getJdbcTypeHandlerManager();
jdbcTypeHandlerManager.appendHandler(CustomPropertyType.class,new CustomPropertyTypeHandler(),true);

Automatically Add

Automatic addition is only effective under spring-boot. While implementing JdbcTypeHandler, we also implement an additional interface JdbcTypeHandlerReplaceConfigurer

@Component //Add this type for spring-boot
public class CustomPropertyTypeHandler implements JdbcTypeHandler, JdbcTypeHandlerReplaceConfigurer{
    //Omitted
}

Add to Specific Column

public class User{
    @Column(typeHandler = CustomPropertyTypeHandler.class)
    private CustomPropertyType name;
}