RWAttributeLink (Web API 2021)

```
public interface RWAttributeLink
```
Represents RW attribute link.
Each Attribute Link is a pair of the combine of attribute id and attribute form id.
We use source and target to identify that users link from source attribute to target attribute. So pair(Attr1, Attr2) means users link Attr1 to Attr2.
If we have 2 attribute links, pair(Attr1, Attr2) and pair(Attr2, Attr3), it means that Attr1, Attr2 and Attr3 are linked together. When unlinking on Attr2, both pairs would be removed. When unlinking on Attt1, only pair(Attr1, Attr2) will be removed, pair(Attr2, Attr3) will be kept.
Backend implementation notice:
- pair(Attr1, Attr2) and pair(Attr2, Attr1) are the same item.
- Attribute info of link would only be identified by AttributeID, that is "AttrID1 AttrForm1" and "AttrID1 AttrForm2" are the same item.
Since:

MicroStrategy Web Polaris

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String PAIR_SEPARATOR

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`getSourceId()`	Returns source attribute info of this link
`java.lang.String`	`getTargetId()`	Returns target attribute info of this link

- Field Detail
  - PAIR_SEPARATOR
```
static final java.lang.String PAIR_SEPARATOR
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getSourceId
```
java.lang.String getSourceId()
```
    Returns source attribute info of this link
    
    Returns:
    
    source attribute info of this link
  - getTargetId
```
java.lang.String getTargetId()
```
    Returns target attribute info of this link
    
    Returns:
    
    target attribute info of this link