VertexProvider (OpenNMS 2015.1.6 API)

Methods
Modifier and Type	Method and Description
`void`	`addVertexListener(VertexListener vertexListener)`
`void`	`clearVertices()`
`boolean`	`containsVertexId(String id)` Deprecated. Use `#containsVertexId(VertexRef id)` instead.
`boolean`	`containsVertexId(VertexRef id, Criteria... criteria)`
`boolean`	`contributesTo(String namespace)` This boolean returns true if the vertices in this provider are intended to contribute to or overlay another namespace
`List<Vertex>`	`getChildren(VertexRef group, Criteria... criteria)`
`Vertex`	`getParent(VertexRef vertex)`
`List<Vertex>`	`getRootGroup()`
`int`	`getSemanticZoomLevel(VertexRef vertex)`
`Vertex`	`getVertex(String namespace, String id)`
`Vertex`	`getVertex(VertexRef reference, Criteria... criteria)`
`String`	`getVertexNamespace()` A string used to identify references belonging to this provider May only contain characters that make for a reasonable Java identifier such as letters digits and underscore (no colons, periods, commas etc.)
`int`	`getVertexTotalCount()`
`List<Vertex>`	`getVertices(Collection<? extends VertexRef> references, Criteria... criteria)`
`List<Vertex>`	`getVertices(Criteria... criteria)` Return an immutable list of vertices that match the criteria.
`boolean`	`hasChildren(VertexRef group)`
`void`	`removeVertexListener(VertexListener vertexListener)`
`boolean`	`setParent(VertexRef child, VertexRef parent)`

getVertexNamespace
```
String getVertexNamespace()
```
A string used to identify references belonging to this provider May only contain characters that make for a reasonable Java identifier such as letters digits and underscore (no colons, periods, commas etc.)

containsVertexId
```
boolean containsVertexId(String id)
```
Deprecated. Use #containsVertexId(VertexRef id) instead.

boolean containsVertexId(VertexRef id,
                       Criteria... criteria)

Vertex getVertex(String namespace,
               String id)

Vertex getVertex(VertexRef reference,
               Criteria... criteria)

int getSemanticZoomLevel(VertexRef vertex)

getVertices
```
List<Vertex> getVertices(Criteria... criteria)
```
Return an immutable list of vertices that match the criteria.

List<Vertex> getVertices(Collection<? extends VertexRef> references,
                       Criteria... criteria)

boolean setParent(VertexRef child,
                VertexRef parent)

List<Vertex> getChildren(VertexRef group,
                       Criteria... criteria)

void addVertexListener(VertexListener vertexListener)

void removeVertexListener(VertexListener vertexListener)

Interface VertexProvider