package test;
import java.io.IOException;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.module.afterburner.AfterburnerModule;
public class TestDeserializePerf
{
public final static class Bean
{
public int a, b, c, d;
public int e, f, g, h;
public Bean setUp() {
a = 1;
b = 999;
c = -1000;
d = 13;
e = 6;
f = -33;
g = 0;
h = 123456789;
return this;
}
public void setA(int v) { a = v; }
public void setB(int v) { b = v; }
public void setC(int v) { c = v; }
public void setD(int v) { d = v; }
public void setE(int v) { e = v; }
public void setF(int v) { f = v; }
public void setG(int v) { g = v; }
public void setH(int v) { h = v; }
@Override
public int hashCode() {
return a + b + c + d + e + f + g + h;
}
}
public static void main(String[] args) throws Exception
{
// JsonFactory f = new org.codehaus.jackson.smile.SmileFactory();
JsonFactory f = new JsonFactory();
ObjectMapper mapperSlow = new ObjectMapper(f);
ObjectMapper mapperFast = new ObjectMapper(f);
// !!! TEST -- to get profile info, comment out:
mapperSlow.registerModule(new AfterburnerModule());
mapperFast.registerModule(new AfterburnerModule());
new TestDeserializePerf().testWith(mapperSlow, mapperFast);
}
private void testWith(ObjectMapper slowMapper, ObjectMapper fastMapper)
throws IOException
{
byte[] json = slowMapper.writeValueAsBytes(new Bean().setUp());
boolean fast = true;
while (true) {
long now = System.currentTimeMillis();
ObjectMapper m = fast ? fastMapper : slowMapper;
Bean bean = null;
for (int i = 0; i < 199999; ++i) {
bean = m.readValue(json, Bean.class);
}
long time = System.currentTimeMillis() - now;
System.out.println("Mapper (fast: "+fast+"; "+bean.hashCode()+"); took "+time+" msecs");
fast = !fast;
}
}
}