Data Filter @Filter
The @Filter annotation defines data display filter conditions, following HQL WHERE clause syntax.
Usage
java
@Erupt(
name = "Test",
filter = @Filter("EruptTest.name = '张三'"),
)
public class EruptTest extends BaseModel {
@EruptField(
views = @View(title = "Name"),
edit = @Edit(title = "Name")
)
private String name;
}Annotation Definition
java
public @interface Filter {
String value() default ""; // filter condition expression
String[] params() default {}; // callback parameters
// dynamically control filter conditions
Class<? extends FilterHandler> conditionHandler() default FilterHandler.class;
}Code Examples
Dynamic Filter Conditions
java
@Erupt(
name = "Test",
filter = @Filter(value = "name = '123' or name ",
params = {"23333"},
conditionHandler = AutoFilter.class)
)
public class EruptTest extends BaseModel {
@EruptField(
views = @View(title = "Name"),
edit = @Edit(title = "Name")
)
private String name;
}java
@Component
public class AutoFilter implements FilterHandler {
/**
* @param condition filter condition expression
* @param params annotation parameters
*
* Result: name = '123' or name = '23333'
*/
@Override
public String filter(String condition, String[] params) {
// generate a new filter expression
// return "name is null"
// append query parameter
return condition + " = '" + params[0] + "'";
}
}Notes
- Filter conditions must follow HQL syntax.
- Can be combined with the permission system to implement row-level access control.
- Parameterized queries are supported for improved security.
Contributors
YuePeng