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    • prerna.engine.impl.tinker.iGraphUtilities Maven / Gradle / Ivy

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    package prerna.engine.impl.tinker;

import java.util.List;

import org.apache.logging.log4j.Logger;

import prerna.ds.TinkerFrame;
import prerna.reactor.frame.r.util.AbstractRJavaTranslator;
import prerna.util.Constants;

public class iGraphUtilities {

	/**
	 * 
	 * @param graph
	 * @param rJavaTranslator
	 * @param graphName
	 * @param wd
	 * @param logger
	 */
	public static void synchronizeGraphToR(TinkerFrame graph, AbstractRJavaTranslator rJavaTranslator, String graphName, String wd, Logger logger) {
		try {
			String filePath = TinkerUtilities.serializeGraph(graph, wd);
			filePath = filePath.replace("\\", "/");

			StringBuilder builder = new StringBuilder("library(\"igraph\");");
			builder.append(graphName + "<- read_graph(\"" + filePath + "\", \"graphml\");");
			// load the graph
			rJavaTranslator.executeEmptyR(builder.toString());
			graph.setIGraphSynched(true);
		} catch (Exception ex) {
			logger.error(Constants.STACKTRACE, ex);
			throw new IllegalArgumentException("Could not convert TinkerFrame into iGraph. Please make sure iGraph package is installed.");
		}
	}
	
	/**
	 * Delete nodes from R iGraph
	 * 
	 * @param type
	 * @param nodeList
	 */
	public static void removeNodeFromR(String graphName, AbstractRJavaTranslator rJavaTranslator, String type, List nodeList, Logger logger) {
		for (int nodeIndex = 0; nodeIndex < nodeList.size(); nodeIndex++) {
			String name = type + ":" + nodeList.get(nodeIndex);
			try {
				logger.info("Deleting node = " + name);
				// eval is abstract and is determined by the specific R
				// implementation
				rJavaTranslator.executeEmptyR(graphName + " <- delete_vertices(" + graphName + ", V(" + graphName + ")[vertex_attr(" + graphName
						+ ", \"" + TinkerFrame.TINKER_ID + "\") == \"" + name + "\"])");
			} catch (Exception ex) {
				logger.error(Constants.STACKTRACE, ex);
				throw new IllegalArgumentException("Could not delete node = " + name);
			}
		}
	}
	
}
    
    
    
    

    




    
    
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