Examples with Neo4JGraph com.steelbridgelabs.oss.neo4j.structure.Neo4JGraph used on opensource projects

Example 1 with Neo4JGraph

use of com.steelbridgelabs.oss.neo4j.structure.Neo4JGraph in project sunbird-rc-core by Sunbird-RC.

the class Neo4jGraphProvider method createUniqueIndex.

@Override
public void createUniqueIndex(Graph graph, String label, List<String> propertyNames) {
    Neo4JGraph neo4jGraph = (Neo4JGraph) graph;
    if (propertyNames.size() > 0) {
        for (String propertyName : propertyNames) {
            Objects.requireNonNull(label, "label cannot be null");
            Objects.requireNonNull(propertyName, "propertyName cannot be null");
            neo4jGraph.execute(new Statement("CREATE CONSTRAINT ON (n:" + label + ") ASSERT n." + propertyName + " IS UNIQUE"));
            logger.info("Neo4jGraph unique index created for " + label);
        }
    } else {
        logger.info("Could not create unique index for empty properties");
    }
}

Example 2 with Neo4JGraph

use of com.steelbridgelabs.oss.neo4j.structure.Neo4JGraph in project sunbird-rc-core by Sunbird-RC.

the class Neo4jGraphProvider method createCompositeIndex.

@Override
public void createCompositeIndex(Graph graph, String label, List<String> propertyNames) {
    Neo4JGraph neo4jGraph = (Neo4JGraph) graph;
    if (propertyNames.size() > 0) {
        StringBuilder properties = new StringBuilder(String.join(",", propertyNames));
        logger.info("composite key properties values " + properties);
        Objects.requireNonNull(label, "label cannot be null");
        Objects.requireNonNull(properties, "properties cannot be null");
        neo4jGraph.execute(new Statement("CREATE INDEX ON :`" + label + "`(" + properties + ")"));
    } else {
        logger.info("Could not create composite index for empty properties");
    }
}

Example 3 with Neo4JGraph

use of com.steelbridgelabs.oss.neo4j.structure.Neo4JGraph in project sunbird-rc-core by Sunbird-RC.

the class Neo4jGraphProvider method getGraph.

private Neo4JGraph getGraph() {
    Neo4JGraph neo4jGraph;
    Neo4JElementIdProvider<?> idProvider = neo4jIdProvider;
    neo4jGraph = new Neo4JGraph(driver, idProvider, idProvider);
    logger.debug("Getting a new graph unit of work");
    return neo4jGraph;
}

Example 4 with Neo4JGraph

use of com.steelbridgelabs.oss.neo4j.structure.Neo4JGraph in project sunbird-rc-core by Sunbird-RC.

the class Neo4jGraphProvider method createIndex.

@Override
public void createIndex(Graph graph, String label, List<String> propertyNames) {
    Neo4JGraph neo4jGraph = (Neo4JGraph) graph;
    if (propertyNames.size() > 0) {
        for (String propertyName : propertyNames) {
            neo4jGraph.createIndex(label, propertyName);
            logger.info("Neo4jGraph index created for " + label);
        }
    } else {
        logger.info("Could not create single index for empty properties");
    }
}