io.druid.segment.data.EntireLayoutIndexedFloatSupplier Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.segment.data;
import com.google.common.base.Supplier;
import io.druid.java.util.common.StringUtils;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
public class EntireLayoutIndexedFloatSupplier implements Supplier
{
private final int totalSize;
private FloatBuffer buffer;
public EntireLayoutIndexedFloatSupplier(int totalSize, ByteBuffer fromBuffer, ByteOrder order)
{
this.totalSize = totalSize;
this.buffer = fromBuffer.asReadOnlyBuffer().order(order).asFloatBuffer();
}
@Override
public IndexedFloats get()
{
return new EntireLayoutIndexedFloats();
}
private class EntireLayoutIndexedFloats implements IndexedFloats
{
@Override
public int size()
{
return totalSize;
}
@Override
public float get(int index)
{
return buffer.get(buffer.position() + index);
}
@Override
public void fill(int index, float[] toFill)
{
if (totalSize - index < toFill.length) {
throw new IndexOutOfBoundsException(
StringUtils.format(
"Cannot fill array of size[%,d] at index[%,d]. Max size[%,d]", toFill.length, index, totalSize
)
);
}
for (int i = 0; i < toFill.length; i++) {
toFill[i] = get(index + i);
}
}
@Override
public String toString()
{
return "EntireCompressedIndexedFloats_Anonymous{" +
", totalSize=" + totalSize +
'}';
}
@Override
public void close()
{
}
}
}