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SirixDB is a hybrid on-disk and in-memory document oriented, versioned database system. It has a lightweight buffer manager, stores everything in a huge persistent and durable tree and allows efficient reconstruction of every revision. Furthermore, SirixDB implements change tracking, diffing and supports time travel queries.

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package io.sirix.access;

import javax.xml.namespace.QName;
import io.brackit.query.atomic.QNm;

/**
 * Encapsulates generic stuff.
 * 
 * @author Johannes Lichtenberger
 * 
 */
public final class Utils {

  /**
   * Building name consisting of a prefix and a name. The namespace-URI is not used over here.
   * 
   * @param qName the {@link QName} of an element
   * @return a string: [prefix:]localname
   */
  public static String buildName(final QNm qName) {
    return qName.getPrefix().isEmpty() ? qName.getLocalName()
        : new StringBuilder(qName.getPrefix()).append(":").append(qName.getLocalName()).toString();
  }
}