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/*
* Copyright (c) 2000, 2020, Oracle and/or its affiliates.
*
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
package com.tangosol.internal.util;
import com.tangosol.io.pof.PofReader;
import com.tangosol.io.pof.PofWriter;
import com.tangosol.io.pof.PortableObject;
import com.tangosol.util.function.Remote;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.reflect.Field;
import javax.json.bind.annotation.JsonbCreator;
import javax.json.bind.annotation.JsonbProperty;
/**
* Adds serialization support to {@link java.util.DoubleSummaryStatistics}.
*
* @author as 2014.10.09
* @since 12.2.1
*/
public class DoubleSummaryStatistics
extends java.util.DoubleSummaryStatistics
implements Remote.DoubleConsumer, com.tangosol.io.ExternalizableLite, PortableObject, Externalizable
{
// ---- helpers ---------------------------------------------------------
protected double getPrivateField(java.util.DoubleSummaryStatistics stats, String sFieldName)
throws NoSuchFieldException, IllegalAccessException
{
Field field = java.util.DoubleSummaryStatistics.class.getDeclaredField(sFieldName);
field.setAccessible(true);
return (double) field.get(stats);
}
protected void setPrivateField(java.util.DoubleSummaryStatistics stats, String sFieldName, Object oValue)
throws NoSuchFieldException, IllegalAccessException
{
Field field = java.util.DoubleSummaryStatistics.class.getDeclaredField(sFieldName);
field.setAccessible(true);
field.set(stats, oValue);
}
// ---- ExternalizableLite interface ------------------------------------
@Override
public void readExternal(DataInput input) throws IOException
{
try
{
setPrivateField(this, "count", input.readLong());
setPrivateField(this, "sum", input.readDouble());
setPrivateField(this, "sumCompensation", input.readDouble());
setPrivateField(this, "simpleSum", input.readDouble());
setPrivateField(this, "min", input.readDouble());
setPrivateField(this, "max", input.readDouble());
}
catch (IOException e)
{
throw e;
}
catch (Exception e)
{
throw new IOException(e);
}
}
@Override
public void writeExternal(DataOutput output) throws IOException
{
try
{
output.writeLong(getCount());
output.writeDouble(getSum());
output.writeDouble(getPrivateField(this, "sumCompensation"));
output.writeDouble(getPrivateField(this, "simpleSum"));
output.writeDouble(getMin());
output.writeDouble(getMax());
}
catch (IOException e)
{
throw e;
}
catch (Exception e)
{
throw new IOException(e);
}
}
// ---- PortableObject interface ----------------------------------------
@Override
public void readExternal(PofReader reader) throws IOException
{
try
{
setPrivateField(this, "count", reader.readLong(0));
setPrivateField(this, "sum", reader.readDouble(1));
setPrivateField(this, "sumCompensation", reader.readDouble(2));
setPrivateField(this, "simpleSum", reader.readDouble(3));
setPrivateField(this, "min", reader.readDouble(4));
setPrivateField(this, "max", reader.readDouble(5));
}
catch (IOException e)
{
throw e;
}
catch (Exception e)
{
throw new IOException(e);
}
}
@Override
public void writeExternal(PofWriter writer) throws IOException
{
try
{
writer.writeLong(0, getCount());
writer.writeDouble(1, getSum());
writer.writeDouble(2, getPrivateField(this, "sumCompensation"));
writer.writeDouble(3, getPrivateField(this, "simpleSum"));
writer.writeDouble(4, getMin());
writer.writeDouble(5, getMax());
}
catch (IOException e)
{
throw e;
}
catch (Exception e)
{
throw new IOException(e);
}
}
// ---- Externalizable interface ----------------------------------------
@Override
public void writeExternal(ObjectOutput out)
throws IOException
{
this.writeExternal((DataOutput) out);
}
@Override
public void readExternal(ObjectInput in)
throws IOException
{
this.readExternal((DataInput) in);
}
// ----- Json Serialization ---------------------------------------------
/**
* Create an {@link DoubleSummaryStatistics} instance from the annotated Json attributes.
*
* @param nCount the statistics total count
* @param nSum the statistics total sum
* @param nMin the statistics min
* @param nMax the statistics max
*
* @return a new {@link DoubleSummaryStatistics}
*
* @throws NoSuchFieldException
* @throws IllegalAccessException
*/
@JsonbCreator
public static DoubleSummaryStatistics createDoubleSummaryStatistics(
@JsonbProperty("sumCompensation") double nSumCompensation,
@JsonbProperty("simpleSum") double nSimpleSum,
@JsonbProperty("count") long nCount,
@JsonbProperty("sum") double nSum,
@JsonbProperty("min") double nMin,
@JsonbProperty("max") double nMax)
throws NoSuchFieldException, IllegalAccessException
{
DoubleSummaryStatistics statistics = new DoubleSummaryStatistics();
statistics.setPrivateField(statistics, "sumCompensation", nSumCompensation);
statistics.setPrivateField(statistics, "simpleSum", nSimpleSum);
statistics.setPrivateField(statistics, "count", nCount);
statistics.setPrivateField(statistics, "sum", nSum);
statistics.setPrivateField(statistics, "min", nMin);
statistics.setPrivateField(statistics, "max", nMax);
return statistics;
}
// ----- accessors for JsonSerialization --------------------------------
/**
* Returns the sumCompensation Json attribute.
*
* @return the sumCompensation Json attribute
*/
@JsonbProperty("sumCompensation")
private double getSumCompensation()
{
try
{
return getPrivateField(this, "sumCompensation");
}
catch (Exception e)
{
return 0.0d;
}
}
/**
* Returns the simpleSum Json attribute.
*
* @return the simpleSum Json attribute
*/
@JsonbProperty("simpleSum")
private double getSimpleSum()
{
try
{
return getPrivateField(this, "simpleSum");
}
catch (Exception e)
{
return 0.0d;
}
}
/**
* Returns the count Json attribute.
*
* @return the count Json attribute
*/
@JsonbProperty("count")
private long getCountProperty()
{
return getCount();
}
/**
* Returns the sum Json attribute.
*
* @return the sum Json attribute
*/
@JsonbProperty("sum")
private double getSumProperty()
{
return getSum();
}
/**
* Returns the min Json attribute.
*
* @return the min Json attribute
*/
@JsonbProperty("min")
private double getMinProperty()
{
return getMin();
}
/**
* Returns the max Json attribute.
*
* @return the max Json attribute
*/
@JsonbProperty("max")
private double getMaxProperty()
{
return getMax();
}
}