How to use

setHasMultipleValues

method

in

org.apache.druid.segment.column.ColumnCapabilitiesImpl

 public ColumnHolder build()
 {
  Preconditions.checkState(type != null, "Type must be set.");

  return new SimpleColumnHolder(
    new ColumnCapabilitiesImpl()
      .setType(type)
      .setDictionaryEncoded(dictionaryEncoded)
      .setHasBitmapIndexes(bitmapIndex != null)
      .setHasSpatialIndexes(spatialIndex != null)
      .setHasMultipleValues(hasMultipleValues)
      .setFilterable(filterable),
    columnSupplier,
    bitmapIndex,
    spatialIndex
  );
 }
}

 dimsKey != null &&
 handler.getLengthOfEncodedKeyComponent(dimsKey) > 1) {
capabilities.setHasMultipleValues(true);

TestColumn(ValueType type)
{
 columnCapabilities = new ColumnCapabilitiesImpl()
   .setType(type)
   .setDictionaryEncoded(type == ValueType.STRING) // set a fake value to make string columns
   .setHasBitmapIndexes(type == ValueType.STRING)
   .setHasSpatialIndexes(false)
   .setHasMultipleValues(false);
}

timeCapabilities = new ColumnCapabilitiesImpl().setType(ValueType.LONG).setHasMultipleValues(false);

@Test
public void testSerde() throws Exception
{
 String json = mapper.writeValueAsString(new ColumnCapabilitiesImpl()
                       .setDictionaryEncoded(true)
                       .setHasBitmapIndexes(true)
                       .setHasMultipleValues(true)
                       .setHasSpatialIndexes(true)
                       .setType(ValueType.COMPLEX)
                       .setFilterable(true));
 Assert.assertFalse(json.contains("filterable"));
 
 ColumnCapabilities cc = mapper.readValue(json, ColumnCapabilitiesImpl.class);
 Assert.assertEquals(ValueType.COMPLEX, cc.getType());
 Assert.assertTrue(cc.isDictionaryEncoded());
 Assert.assertFalse(cc.isRunLengthEncoded());
 Assert.assertTrue(cc.hasSpatialIndexes());
 Assert.assertTrue(cc.hasMultipleValues());
 Assert.assertTrue(cc.hasBitmapIndexes());
 Assert.assertFalse(cc.isFilterable());
}

 public ColumnHolder build()
 {
  Preconditions.checkState(type != null, "Type must be set.");

  return new SimpleColumnHolder(
    new ColumnCapabilitiesImpl()
      .setType(type)
      .setDictionaryEncoded(dictionaryEncoded)
      .setHasBitmapIndexes(bitmapIndex != null)
      .setHasSpatialIndexes(spatialIndex != null)
      .setHasMultipleValues(hasMultipleValues)
      .setFilterable(filterable),
    columnSupplier,
    bitmapIndex,
    spatialIndex
  );
 }
}

 dimsKey != null &&
 handler.getLengthOfEncodedKeyComponent(dimsKey) > 1) {
capabilities.setHasMultipleValues(true);

timeCapabilities = new ColumnCapabilitiesImpl().setType(ValueType.LONG).setHasMultipleValues(false);