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A module that is everything required to understands Druid Segments
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.druid.segment.column;
import org.apache.druid.collections.bitmap.ImmutableBitmap;
import org.apache.druid.query.monomorphicprocessing.RuntimeShapeInspector;
import org.apache.druid.segment.ColumnValueSelector;
import org.apache.druid.segment.IndexIO;
import org.apache.druid.segment.data.ColumnarFloats;
import org.apache.druid.segment.data.ReadableOffset;
import org.apache.druid.segment.vector.ReadableVectorOffset;
import org.apache.druid.segment.vector.VectorValueSelector;
/**
*/
public class FloatsColumn implements NumericColumn
{
/**
* Factory method to create FloatsColumn.
*/
public static FloatsColumn create(ColumnarFloats column, ImmutableBitmap nullValueBitmap)
{
if (nullValueBitmap.isEmpty()) {
return new FloatsColumn(column);
} else {
return new FloatsColumnWithNulls(column, nullValueBitmap);
}
}
final ColumnarFloats column;
FloatsColumn(final ColumnarFloats column)
{
this.column = column;
}
@Override
public int length()
{
return column.size();
}
@Override
public ColumnValueSelector> makeColumnValueSelector(ReadableOffset offset)
{
return column.makeColumnValueSelector(offset, IndexIO.LEGACY_FACTORY.getBitmapFactory().makeEmptyImmutableBitmap());
}
@Override
public VectorValueSelector makeVectorValueSelector(ReadableVectorOffset offset)
{
return column.makeVectorValueSelector(offset, IndexIO.LEGACY_FACTORY.getBitmapFactory().makeEmptyImmutableBitmap());
}
@Override
public long getLongSingleValueRow(int rowNum)
{
return (long) column.get(rowNum);
}
@Override
public void close()
{
column.close();
}
@Override
public void inspectRuntimeShape(RuntimeShapeInspector inspector)
{
inspector.visit("column", column);
}
}