LineageGraphDisplayService (UI Server Platform Chassis for Spring 3.4 API)

java.lang.Object
- org.odpi.openmetadata.userinterface.uichassis.springboot.service.LineageGraphDisplayService

```
@Service
@ConfigurationProperties(prefix="lineage-display-config")
public class LineageGraphDisplayService
extends Object
```
This component matches the properties provided under lineage-display-config which provide rules based on which the edge's direction will be inverted

Constructor Summary

Constructors
Constructor Description

LineageGraphDisplayService()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`applyRules(Graph graph, String queriedNodeGUID)`	This method applies the rules defined in the properties file on the graph.
`Rules`	`getRules()`
`void`	`setNodesLevel(List<Node> startNodes, List<Node> listNodes, List<Edge> listEdges)`	sets the level field for the nodes, in order to be displayed on levels Stars from a start list of nodes and sets a the level+1 for the nodes on the ends of "to" edges and legel -1 for the nodes from the "from" end of it's edges once an edge or node is processed is removed from the list.
`void`	`setRules(Rules rules)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - LineageGraphDisplayService
```
public LineageGraphDisplayService()
```
- Method Detail
  - getRules
```
public Rules getRules()
```
  - setRules
```
public void setRules(Rules rules)
```
  - applyRules
```
public void applyRules(Graph graph,
                       String queriedNodeGUID)
```
    This method applies the rules defined in the properties file on the graph.
    
    Parameters:
    
    graph - graph processed from the response from open lineage
    
    queriedNodeGUID - the GUID of the queried node
  - setNodesLevel
```
public void setNodesLevel(List<Node> startNodes,
                          List<Node> listNodes,
                          List<Edge> listEdges)
```
    sets the level field for the nodes, in order to be displayed on levels Stars from a start list of nodes and sets a the level+1 for the nodes on the ends of "to" edges and legel -1 for the nodes from the "from" end of it's edges once an edge or node is processed is removed from the list.
    
    Parameters:
    
    startNodes - the starting nodes
    
    listNodes - the list of nodes
    
    listEdges - the list of edges
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object