org.openlca.io.DisplayValues Maven / Gradle / Ivy
package org.openlca.io;
import org.openlca.core.database.EntityCache;
import org.openlca.core.model.FlowProperty;
import org.openlca.core.model.Unit;
import org.openlca.core.model.descriptors.FlowDescriptor;
import org.openlca.core.model.descriptors.FlowPropertyDescriptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A helper class that maps openLCA models to display values.
*/
public final class DisplayValues {
private static Logger log = LoggerFactory.getLogger(DisplayValues.class);
private DisplayValues() {
}
/** Returns the name of the reference unit of the given flow. */
public static String referenceUnit(FlowDescriptor flow, EntityCache cache) {
FlowPropertyDescriptor descriptor = cache.get(
FlowPropertyDescriptor.class, flow.refFlowPropertyId);
if (descriptor == null) {
log.warn("no reference flow property for flow {}", flow);
return "";
}
try {
FlowProperty property = cache.get(FlowProperty.class,
descriptor.id);
Unit refUnit = property.unitGroup.referenceUnit;
return refUnit.name;
} catch (Exception e) {
log.error("failed to get reference unit for flow " + flow.id,
e);
return "";
}
}
}