Examples of org.fusesource.hawtdb.api.MultiIndexFactory

org.fusesource.hawtdb.api.MultiIndexFactory
Special purpose index factory providing APIs to create and open several indexes at a given {@link Paged} object:each index is identified by a unique name, which must be used to refer to the index itself when opening or creating it.
This index factory is very useful when having to manage several correlated indexes, whose updates must be atomically executed in the same transaction. @author Sergio Bossa

    Map<String, Object> result = new HashMap<>();


    if (logDb != null) {


      Transaction tx                            = logDb.tx();
      MultiIndexFactory multiIndexFactory       = new MultiIndexFactory(tx);
      IndexFactory<String, Object> indexFactory = new BTreeIndexFactory<>();


      try {


        SortedIndex<String, Object> index  = (SortedIndex<String, Object>) multiIndexFactory.openOrCreate(key, indexFactory);
        Iterator<Entry<String, Object>> it = index.iterator();


        while (it.hasNext()) {


          Entry<String, Object> entry = it.next();

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      if (key != null) {


        synchronized (logDb) {


          Transaction tx                            = logDb.tx();
          MultiIndexFactory multiIndexFactory       = new MultiIndexFactory(tx);
          IndexFactory<String, Object> indexFactory = new BTreeIndexFactory<>();
          SortedIndex<String, Object> index         = null;


          try {


            index = (SortedIndex<String, Object>) multiIndexFactory.openOrCreate(key, indexFactory);


          } catch (Throwable t) {


            t.printStackTrace();
            
            logger.log(Level.WARNING, "Could not open or create log db page for key {0}", key);


            index = (SortedIndex<String, Object>) multiIndexFactory.create(key, indexFactory);


          }


          String uuid  = UUID.randomUUID().toString().replaceAll("[\\-]+", "");

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org.structr.core.log.WriteLogCommand

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