KnowledgeBaseUpdater (Vitro API 1.15.0 API)

java.lang.Object
- edu.cornell.mannlib.vitro.webapp.ontology.update.KnowledgeBaseUpdater

```
public class KnowledgeBaseUpdater
extends Object
```
Performs knowledge base updates necessary to align with a new ontology version.

Constructor Summary

Constructors
Constructor Description

KnowledgeBaseUpdater(UpdateSettings settings)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static boolean`	`isUpdatableABoxGraph(String graphName)`
`static String`	`loadSparqlQuery(String filePath)`	loads a SPARQL ASK query from a text file
`boolean`	`update(javax.servlet.ServletContext servletContext)`
`boolean`	`updateRequired(javax.servlet.ServletContext servletContext)`	Executes a SPARQL ASK query to determine whether the knowledge base needs to be updated to conform to a new ontology version

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

Constructor Detail

KnowledgeBaseUpdater

public KnowledgeBaseUpdater(UpdateSettings settings)

Method Detail

update

public boolean update(javax.servlet.ServletContext servletContext)
               throws IOException

Throws:: IOException

updateRequired
```
public boolean updateRequired(javax.servlet.ServletContext servletContext)
                       throws IOException
```
Executes a SPARQL ASK query to determine whether the knowledge base needs to be updated to conform to a new ontology version

Throws:

IOException

loadSparqlQuery
```
public static String loadSparqlQuery(String filePath)
                              throws IOException
```
loads a SPARQL ASK query from a text file

Parameters:

filePath - Path of a file

Returns:

the query string or null if file not found

Throws:

IOException

isUpdatableABoxGraph

public static boolean isUpdatableABoxGraph(String graphName)