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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.data;
import com.google.common.base.Supplier;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.DoubleBuffer;
public class EntireLayoutColumnarDoublesSupplier implements Supplier
{
private final int totalSize;
private final DoubleBuffer buffer;
public EntireLayoutColumnarDoublesSupplier(int totalSize, ByteBuffer fromBuffer, ByteOrder byteOrder)
{
this.totalSize = totalSize;
this.buffer = fromBuffer.asReadOnlyBuffer().order(byteOrder).asDoubleBuffer();
}
@Override
public ColumnarDoubles get()
{
return new EntireLayoutColumnarDoubles();
}
private class EntireLayoutColumnarDoubles implements ColumnarDoubles
{
@Override
public int size()
{
return totalSize;
}
@Override
public double get(int index)
{
return buffer.get(buffer.position() + index);
}
@Override
public void close()
{
}
@Override
public String toString()
{
return "EntireLayoutColumnarDoubles{" +
", totalSize=" + totalSize +
'}';
}
}
}