cn.crane4j.annotation

注释类型 Assemble

@Repeatable(value=Assemble.List.class)
 @Documented
 @Target(value={ANNOTATION_TYPE,FIELD,TYPE,METHOD})
 @Retention(value=RUNTIME)
public @interface Assemble

Declare an operation of assemble。
Specify the specific attribute of the current object as the key. When the operation is executed, the key value will be extracted and the data source object obtained from the specified data source container, And map the attribute value specified in the data source object to the corresponding attribute of the current object according to the configuration。
for example：

{@code
 public class Foo {

作者:

huangchengxing

另请参阅:

cn.crane4j.core.parser.TypeHierarchyBeanOperationParser;, cn.crane4j.core.parser.handler.AssembleAnnotationHandler;

可选元素概要

可选元素

限定符和类型	可选元素和说明
String	container The namespace of the data source container to be used.
String	containerProvider The name of the container provider to be used.
String[]	groups The group to which the current operation belongs.
String	handler The name of the handler to be used.
Class<?>	handlerType The type of the handler to be used.
String	key Field name of key.
Class<?>	keyType The type to which the key value of target should be converted when fetching the data source from the data source.
String	propertyMappingStrategy Get name of property mapping strategy.
Mapping[]	props Attributes that need to be mapped between the data source object and the current object.
Class<?>[]	propTemplates Mapping template classes.
int	sort Sort values.

元素详细资料

sort

public abstract int sort

Sort values. The lower the value, the higher the priority.

返回:

sort values

默认值:

2147483647

key

public abstract String key

Field name of key.
This field value will be used to obtain the associated data source object from the data source container later.

When the annotation is on:

• field of this class, it will be forced to specify the name of the annotated attribute, the key value is the field value of current object;
• this class, and specify key, equivalent to directly annotating on a specified field;
• this class, and key is empty, the key value is the current object itself.

返回:

field name of key

默认值:

""

keyType

public abstract Class<?> keyType

The type to which the key value of target should be converted when fetching the data source from the data source.

For example, the data source obtained from the data source is grouped according to the key of the Long type, and the key value corresponding to the current operation is Integer, then the keyType needs to be Long at this time.
When the actual operation is performed, the key value is automatically converted from Integer to Long type.

返回:

key type

从以下版本开始:

2.2.0

默认值:

java.lang.Object.class

container

public abstract String container

The namespace of the data source container to be used.

返回:

namespace

默认值:

""

containerProvider

public abstract String containerProvider

The name of the container provider to be used.

返回:

container factory name

默认值:

""

handler

public abstract String handler

The name of the handler to be used.

返回:

name

另请参阅:

cn.crane4j.core.executor.handler.AssembleOperationHandler;

默认值:

""

handlerType

public abstract Class<?> handlerType

The type of the handler to be used.

返回:

name

另请参阅:

cn.crane4j.core.executor.handler.AssembleOperationHandler;

默认值:

java.lang.Object.class

props

public abstract Mapping[] props

Attributes that need to be mapped between the data source object and the current object.

返回:

attributes

另请参阅:

propTemplates()

默认值:

{}

propTemplates

public abstract Class<?>[] propTemplates

Mapping template classes. specify a class, if MappingTemplate exists on the class, it will scan and add Mapping to props()。

返回:

mapping templates

默认值:

{}

groups

public abstract String[] groups

The group to which the current operation belongs.

返回:

groups

默认值:

{}

propertyMappingStrategy

public abstract String propertyMappingStrategy

Get name of property mapping strategy.

返回:

strategy name

从以下版本开始:

2.1.0

另请参阅:

cn.crane4j.core.parser.handler.strategy.PropertyMappingStrategy

默认值:

""