edu.cornell.mannlib.vitro.webapp.visualization.valueobjects.ConstructedModelTracker.java Source code

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Here is the source code for edu.cornell.mannlib.vitro.webapp.visualization.valueobjects.ConstructedModelTracker.java

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/* $This file is distributed under the terms of the license in /doc/license.txt$ */
package edu.cornell.mannlib.vitro.webapp.visualization.valueobjects;

import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang.StringUtils;

import com.hp.hpl.jena.rdf.model.Model;

import edu.cornell.mannlib.vitro.webapp.visualization.exceptions.IllegalConstructedModelIdentifierException;

public class ConstructedModelTracker {

    private static Map<String, Model> modelIdentifierToConstructedModel = new HashMap<String, Model>();

    public static void trackModel(String identifier, Model model) {
        modelIdentifierToConstructedModel.put(identifier, model);
    }

    public static Model getModel(String identifier) {
        return modelIdentifierToConstructedModel.get(identifier);
    }

    public static Model removeModel(String uri, String modelType) {
        return modelIdentifierToConstructedModel.remove(generateModelIdentifier(uri, modelType));
    }

    public static String generateModelIdentifier(String uri, String modelType) {

        if (uri == null) {
            uri = "";
        }
        return modelType + "$" + uri;
    }

    public static Map<String, Model> getAllModels() {
        return modelIdentifierToConstructedModel;
    }

    public static ConstructedModel parseModelIdentifier(String modelIdentifier)
            throws IllegalConstructedModelIdentifierException {

        String[] parts = StringUtils.split(modelIdentifier, '$');

        if (parts.length == 0) {
            throw new IllegalConstructedModelIdentifierException(modelIdentifier + " provided.");
        } else if (parts.length == 1) {
            return new ConstructedModel(parts[0], null);
        } else {
            return new ConstructedModel(parts[0], parts[1]);
        }
    }
}