How to use

leveledStrategy

method

in

com.datastax.driver.core.schemabuilder.SchemaBuilder

private CompactionOptions<?> getCompaction(boolean appendHeavyReadLight) {
  return appendHeavyReadLight ? SchemaBuilder.sizedTieredStategy().minThreshold(4).maxThreshold(32)
      : SchemaBuilder.leveledStrategy();
}

@Test(groups = "unit")
public void should_create_leveled_compaction_option() throws Exception {
 // When
 final String built =
   leveledStrategy()
     .enabled(true)
     .ssTableSizeInMB(160)
     .tombstoneCompactionIntervalInDay(3)
     .tombstoneThreshold(0.7)
     .uncheckedTombstoneCompaction(true)
     .build();
 // Then
 assertThat(built)
   .isEqualTo(
     "{'class' : 'LeveledCompactionStrategy', "
       + "'enabled' : true, "
       + "'tombstone_compaction_interval' : 3, "
       + "'tombstone_threshold' : 0.7, "
       + "'unchecked_tombstone_compaction' : true, "
       + "'sstable_size_in_mb' : 160}");
}

.caching(Caching.ROWS_ONLY)
.comment("This is a comment")
.compactionOptions(leveledStrategy().ssTableSizeInMB(160))
.compressionOptions(lz4())
.dcLocalReadRepairChance(0.21)

     .addColumn("a", ks.getUserType("atype").copy(true))
     .withOptions()
     .compactionOptions(SchemaBuilder.leveledStrategy().ssTableSizeInMB(95)));
} else {
     .addColumn("a", DataType.cint())
     .withOptions()
     .compactionOptions(SchemaBuilder.leveledStrategy().ssTableSizeInMB(95)));

private CompactionOptions<?> getCompaction(boolean appendHeavyReadLight) {
  return appendHeavyReadLight ? SchemaBuilder.sizedTieredStategy().minThreshold(4).maxThreshold(32)
      : SchemaBuilder.leveledStrategy();
}

.caching(Caching.ROWS_ONLY)
.comment("This is a comment")
.compactionOptions(leveledStrategy().ssTableSizeInMB(160))
.compressionOptions(lz4())
.dcLocalReadRepairChance(0.21)

@Test(groups = "unit")
public void should_create_leveled_compaction_option() throws Exception {
 // When
 final String built =
   leveledStrategy()
     .enabled(true)
     .ssTableSizeInMB(160)
     .tombstoneCompactionIntervalInDay(3)
     .tombstoneThreshold(0.7)
     .uncheckedTombstoneCompaction(true)
     .build();
 // Then
 assertThat(built)
   .isEqualTo(
     "{'class' : 'LeveledCompactionStrategy', "
       + "'enabled' : true, "
       + "'tombstone_compaction_interval' : 3, "
       + "'tombstone_threshold' : 0.7, "
       + "'unchecked_tombstone_compaction' : true, "
       + "'sstable_size_in_mb' : 160}");
}

private static CompactionOptions<?> compactionOptions(final Configuration configuration) {
  if (!configuration.has(COMPACTION_STRATEGY)) {
    return null;
  }
  final CompactionOptions<?> compactionOptions = Match(configuration.get(COMPACTION_STRATEGY))
      .of(
          Case($("SizeTieredCompactionStrategy"), sizedTieredStategy()),
          Case($("DateTieredCompactionStrategy"), dateTieredStrategy()),
          Case($("LeveledCompactionStrategy"), leveledStrategy()));
  Array.of(configuration.get(COMPACTION_OPTIONS))
      .grouped(2)
      .forEach(keyValue -> compactionOptions.freeformOption(keyValue.get(0), keyValue.get(1)));
  return compactionOptions;
}

.caching(Caching.ROWS_ONLY)
.comment("This is a comment")
.compactionOptions(leveledStrategy().ssTableSizeInMB(160))
.compressionOptions(lz4())
.dcLocalReadRepairChance(0.21)

     .addColumn("a", ks.getUserType("atype").copy(true))
     .withOptions()
     .compactionOptions(SchemaBuilder.leveledStrategy().ssTableSizeInMB(95)));
} else {
     .addColumn("a", DataType.cint())
     .withOptions()
     .compactionOptions(SchemaBuilder.leveledStrategy().ssTableSizeInMB(95)));

.caching(Caching.ROWS_ONLY)
.comment("This is a comment")
.compactionOptions(leveledStrategy().ssTableSizeInMB(160))
.compressionOptions(lz4())
.dcLocalReadRepairChance(0.21)