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added jmh benchmark

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This commit is contained in:
Shautvast 2023-06-25 11:15:08 +02:00
parent f8e0b3d81a
commit 0f4d567357
36 changed files with 977 additions and 423 deletions
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2
.gitignore vendored
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@ -2,5 +2,5 @@
/.classpath
/.settings/
/.idea/
/target/
target/
/*.iml

98
jmh/pom.xml Normal file
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@ -0,0 +1,98 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>nl.sander</groupId>
<artifactId>jsonthingy-pom</artifactId>
<version>0.1-SNAPSHOT</version>
</parent>
<name>JsonToy-JMH</name>
<artifactId>jsonthingy-jmhtests</artifactId>
<version>0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<maven.compiler.source>9</maven.compiler.source>
<maven.compiler.target>9</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>jsonthingy</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.15.1</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>1.36</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.36</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<compilerVersion>9</compilerVersion>
<source>9</source>
<target>9</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<finalName>benchmark</finalName>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.openjdk.jmh.Main</mainClass>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
</transformers>
<filters>
<filter>
<!--
Shading signed JARs will fail without this.
http://stackoverflow.com/questions/999489/invalid-signature-file-when-attempting-to-run-a-jar
-->
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

22
jmh/src/main/java/nl/sanderhautvast/json/jmh/Bean1.java Normal file
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@ -0,0 +1,22 @@
package nl.sanderhautvast.json.jmh;
public class Bean1 {
private String data1;
private Bean2 bean2;
public String getData1() {
return data1;
}
public void setData1(String data1) {
this.data1 = data1;
}
public Bean2 getBean2() {
return bean2;
}
public void setBean2(Bean2 bean2) {
this.bean2 = bean2;
}
}

13
jmh/src/main/java/nl/sanderhautvast/json/jmh/Bean2.java Normal file
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@ -0,0 +1,13 @@
package nl.sanderhautvast.json.jmh;
public class Bean2 {
private String data2;
public String getData2() {
return data2;
}
public void setData2(String data2) {
this.data2 = data2;
}
}

48
jmh/src/main/java/nl/sanderhautvast/json/jmh/Benchmarks.java Normal file
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@ -0,0 +1,48 @@
package nl.sanderhautvast.json.jmh;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import nl.sanderhautvast.json.ser.Mapper;
import org.openjdk.jmh.annotations.*;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
@State(Scope.Thread)
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public class Benchmarks {
private static final int ITERATIONS = 10;
@Benchmark
public void testJson() {
Bean1 bean1;
Bean2 bean2;
for (int i = 0; i < ITERATIONS; i++) {
bean1 = new Bean1();
bean2 = new Bean2();
bean1.setData1(UUID.randomUUID().toString());
bean1.setBean2(bean2);
bean2.setData2(UUID.randomUUID().toString());
Mapper.json(bean1);
}
}
@Benchmark
public void testJackson() throws JsonProcessingException {
Bean1 bean1;
Bean2 bean2;
ObjectMapper mapper = new ObjectMapper();
for (int i = 0; i < ITERATIONS; i++) {
bean1 = new Bean1();
bean2 = new Bean2();
bean1.setData1(UUID.randomUUID().toString());
bean1.setBean2(bean2);
bean2.setData2(UUID.randomUUID().toString());
mapper.writeValueAsString(bean1);
}
}
}

74
lib/pom.xml Normal file
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@ -0,0 +1,74 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>nl.sander</groupId>
<artifactId>jsonthingy-pom</artifactId>
<version>0.1-SNAPSHOT</version>
</parent>
<name>JsonToy</name>
<artifactId>jsonthingy</artifactId>
<version>0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<maven.compiler.source>9</maven.compiler.source>
<maven.compiler.target>9</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm-tree</artifactId>
<version>9.4</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.9.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.10.19</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.15.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<argLine>--add-opens java.base/java.lang=ALL-UNNAMED</argLine>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<compilerVersion>9</compilerVersion>
<source>9</source>
<target>9</target>
</configuration>
</plugin>
</plugins>
</build>
</project>

2
src/main/java/nl/sanderhautvast/json/ser/BaseMapper.java → lib/src/main/java/nl/sanderhautvast/json/ser/BaseMapper.java
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@ -2,6 +2,6 @@ package nl.sanderhautvast.json.ser;
public abstract class BaseMapper<T> {
protected abstract String json(T value);
protected abstract void json(StringBuilder b, T value);
}

0
src/main/java/nl/sanderhautvast/json/ser/ByteClassLoader.java → lib/src/main/java/nl/sanderhautvast/json/ser/ByteClassLoader.java
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0
src/main/java/nl/sanderhautvast/json/ser/JsonError.java → lib/src/main/java/nl/sanderhautvast/json/ser/JsonError.java
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473
lib/src/main/java/nl/sanderhautvast/json/ser/Mapper.java Normal file
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@ -0,0 +1,473 @@
package nl.sanderhautvast.json.ser;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
public class Mapper {
private static final Map<Class<?>, BaseMapper<?>> mappers = new ConcurrentHashMap<>();
private static final ByteClassLoader generatedClassesLoader = new ByteClassLoader();
private static final StringMapper stringMapper = new StringMapper();
private static final BooleanMapper booleanMapper = new BooleanMapper();
private static final IntegerMapper integerMapper = new IntegerMapper();
private static final LongMapper longMapper = new LongMapper();
private static final ShortMapper shortMapper = new ShortMapper();
private static final ByteMapper byteMapper = new ByteMapper();
private static final CharMapper charMapper = new CharMapper();
private static final FloatMapper floatMapper = new FloatMapper();
private static final DoubleMapper doubleMapper = new DoubleMapper();
/**
* Add a new (custom) mapper implementation for the specified type
*
* @param type The class to serialize to json
* @param mapper the Mapper implementation
*/
public static <T> void addMapper(Class<T> type, BaseMapper<T> mapper) {
mappers.put(type, mapper);
}
/**
* returns the json representation of the value as a String
*/
public static String json(Object value) {
StringBuilder b = new StringBuilder(128);
json(b, value);
return b.toString();
}
@SuppressWarnings({"unchecked", "rawtypes"})
public static void json(StringBuilder b, Object value) {
if (value == null) {
b.append("null");
} else {
Class<?> type = value.getClass();
if (type.isArray()) {
if (value instanceof byte[]) {
array(b, (byte[]) value);
} else if (value instanceof int[]) {
array(b, (int[]) value);
} else if (value instanceof short[]) {
array(b, (short[]) value);
} else if (value instanceof boolean[]) {
array(b, (boolean[]) value);
} else if (value instanceof char[]) {
array(b, (char[]) value);
} else if (value instanceof long[]) {
array(b, (long[]) value);
} else if (value instanceof float[]) {
array(b, (float[]) value);
} else if (value instanceof double[]) {
array(b, (double[]) value);
} else {
array(b, (Object[]) value);
}
} else if (value instanceof Collection) {
list(b, (Collection) value);
} else if (value instanceof Map) {
object(b, (Map) value);
} else {
if (type.equals(String.class)) {
stringMapper.json(b, (String) value);
} else if (type.equals(Boolean.class)) {
booleanMapper.json(b, (Boolean) value);
} else if (type.equals(Integer.class)) {
integerMapper.json(b, (Integer) value);
} else if (type.equals(Long.class)) {
longMapper.json(b, (Long) value);
} else if (type.equals(Short.class)) {
shortMapper.json(b, (Short) value);
} else if (type.equals(Byte.class)) {
byteMapper.json(b, (Byte) value);
} else if (type.equals(Character.class)) {
charMapper.json(b, (Character) value);
} else if (type.equals(Float.class)) {
floatMapper.json(b, (Float) value);
} else if (type.equals(Double.class)) {
doubleMapper.json(b, (Double) value);
} else {
BaseMapper mapper = mappers.computeIfAbsent(type, key -> createObjectMapper(type));
mapper.json(b, value);
}
}
}
}
private static void array(StringBuilder b, Object[] array) {
if (array.length == 0) {
b.append("[]");
} else {
Object first = array[0];
b.append("[");
Mapper.json(b, first);
Arrays.stream(array).skip(1)
.forEach(element -> {
b.append(",");
Mapper.json(b, element);
});
b.append("]");
}
}
private static void array(StringBuilder b, byte[] array) {
if (array.length == 0) {
b.append("[]");
} else {
byte first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
private static void array(StringBuilder b, short[] array) {
if (array.length == 0) {
b.append("[]");
} else {
short first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
private static void array(StringBuilder b, long[] array) {
if (array.length == 0) {
b.append("[]");
} else {
long first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
private static void array(StringBuilder b, boolean[] array) {
if (array.length == 0) {
b.append("[]");
} else {
boolean first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
private static void array(StringBuilder b, double[] array) {
if (array.length == 0) {
b.append("[]");
} else {
double first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
private static void array(StringBuilder b, char[] array) {
if (array.length == 0) {
b.append("[]");
} else {
char first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
private static void array(StringBuilder b, float[] array) {
if (array.length == 0) {
b.append("[]");
} else {
float first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
private static void array(StringBuilder b, int[] array) {
if (array.length == 0) {
b.append("[]");
} else {
int first = array[0];
b.append("[");
json(b, first);
for (int i = 1; i < array.length; i++) {
b.append(",");
json(b, array[i]);
}
b.append("]");
}
}
@SuppressWarnings({"rawtypes", "unchecked"})
private static void list(StringBuilder b, Collection list) {
if (list.isEmpty()) {
b.append("[]");
} else {
Object first = list.iterator().next();
b.append("[");
Mapper.json(b, first);
list.stream().skip(1)
.forEach(element -> {
b.append(",");
Mapper.json(b, element);
});
b.append("]");
}
}
@SuppressWarnings({"rawtypes", "unchecked"})
private static void object(StringBuilder b, Map map) {
if (map.isEmpty()) {
b.append("{}");
} else {
b.append("{\"");
Set<Map.Entry> entries = map.entrySet();
Map.Entry first = entries.iterator().next();
Object key = first.getKey();
if (key instanceof String) {
escape(b, (String) key);
} else if (key instanceof Character) {
escape(b, (Character) key);
} else {
b.append(key);
}
b.append("\":");
Mapper.json(b, first.getValue());
entries.stream().skip(1)
.forEach(entry -> {
b.append(",\"");
b.append(entry.getKey()).append("\":");
Mapper.json(b, entry.getValue());
});
b.append("}");
}
}
public static void json(StringBuilder b, byte value) {
b.append(value);
}
public static void json(StringBuilder b, boolean value) {
b.append(value);
}
public static void json(StringBuilder b, short value) {
b.append(value);
}
public static void json(StringBuilder b, int value) {
b.append(value);
}
public static void json(StringBuilder b, long value) {
b.append(value);
}
public static void json(StringBuilder b, char value) {
b.append("\"");
escape(b, value);
b.append("\"");
}
public static void json(StringBuilder b, float value) {
b.append(value);
}
public static void json(StringBuilder b, double value) {
b.append(value);
}
@SuppressWarnings("unchecked")
private static <T> BaseMapper<T> createObjectMapper(Class<T> forType) {
try {
ClassReader cr = new ClassReader(forType.getName());
MapperFactory mapperFactory = new MapperFactory();
cr.accept(mapperFactory, 0);
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
mapperFactory.classNode.accept(classWriter);
byte[] byteArray = classWriter.toByteArray();
generatedClassesLoader.addClass(mapperFactory.classNode.name, byteArray);
return (BaseMapper<T>) generatedClassesLoader.loadClass(mapperFactory.classNode.name).getConstructor().newInstance();
} catch (IOException | ClassNotFoundException | NoSuchMethodException | InstantiationException |
IllegalAccessException | InvocationTargetException e) {
throw new JsonError(e);
}
}
static void escape(StringBuilder b, char c) {
escape(b, String.valueOf(c));
}
static void escape(StringBuilder b, String value) {
int offset = b.length();
b.append(value);
int i = offset;
while (i < b.length()) {
char c = b.charAt(i);
switch (c) {
case '\t':
b.replace(i, i + 1, "\\");
b.insert(i + 1, "t");
break;
case '\"':
b.replace(i, i + 1, "\\");
b.insert(++i, "\"");
break;
case '/':
b.replace(i, i + 1, "\\");
b.insert(++i, "/");
break;
case '\r':
b.replace(i, i + 1, "\\");
b.insert(++i, "r");
break;
case '\n':
b.replace(i, i + 1, "\\");
b.insert(++i, "n");
break;
case '\b':
b.replace(i, i + 1, "\\");
b.insert(++i, "b");
break;
case '\f':
b.replace(i, i + 1, "\\");
b.insert(++i, "f");
break;
case '\\':
b.replace(i, i + 1, "\\");
b.insert(++i, "\\");
break;
case '\'':
break;
default:
if ((c <= '\u001F') || (c >= '\u007F' && c <= '\u009F') || (c >= '\u2000' && c <= '\u20FF')) {
String ss = Integer.toHexString(c);
b.replace(i, i + 1, "\\");
b.insert(++i, "u");
for (int k = 0; k < 4 - ss.length(); k++) {
b.insert(++i, '0');
}
b.insert(++i, ss.toUpperCase());
}
}
i++;
}
}
}
class BooleanMapper extends BaseMapper<Boolean> {
@Override
public void json(StringBuilder b, Boolean value) {
b.append(value);
}
}
class ShortMapper extends BaseMapper<Short> {
@Override
public void json(StringBuilder b, Short value) {
b.append(value);
}
}
class StringMapper extends BaseMapper<String> {
@Override
public void json(StringBuilder b, String value) {
b.append("\"");
Mapper.escape(b, value);
b.append("\"");
}
}
class IntegerMapper extends BaseMapper<Integer> {
@Override
public void json(StringBuilder b, Integer value) {
b.append(value);
}
}
class LongMapper extends BaseMapper<Long> {
@Override
public void json(StringBuilder b, Long value) {
b.append(value);
}
}
class ByteMapper extends BaseMapper<Byte> {
@Override
protected void json(StringBuilder b, Byte value) {
b.append(value);
}
}
class CharMapper extends BaseMapper<Character> {
@Override
protected void json(StringBuilder b, Character value) {
b.append("\"");
Mapper.escape(b, value);
b.append("\"");
}
}
class FloatMapper extends BaseMapper<Float> {
@Override
protected void json(StringBuilder b, Float value) {
b.append(value);
}
}
class DoubleMapper extends BaseMapper<Double> {
@Override
protected void json(StringBuilder b, Double value) {
b.append(value);
}
}

34
src/main/java/nl/sanderhautvast/json/ser/MapperFactory.java → lib/src/main/java/nl/sanderhautvast/json/ser/MapperFactory.java
View file

@ -45,7 +45,7 @@ public class MapperFactory extends ClassVisitor {
@Override
public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
this.classToMap = name;
classNode.name = "Mapper"+ UUID.randomUUID();
classNode.name = "Mapper" + UUID.randomUUID();
classNode.superName = MAPPERBASECLASS;
MethodNode constructor = new MethodNode(ACC_PUBLIC, INIT, ZERO_ARGS_VOID, null, null);
constructor.instructions.add(new VarInsnNode(ALOAD, 0));
@ -53,17 +53,13 @@ public class MapperFactory extends ClassVisitor {
constructor.instructions.add(new InsnNode(RETURN));
classNode.methods.add(constructor);
jsonMethod = new MethodNode(ACC_PUBLIC,
"json", "(Ljava/lang/Object;)Ljava/lang/String;", null, null);
jsonMethod = new MethodNode(ACC_PROTECTED,
"json", "(Ljava/lang/StringBuilder;Ljava/lang/Object;)V", null, null);
classNode.methods.add(jsonMethod);
add(new VarInsnNode(ALOAD, 1));
add(new TypeInsnNode(CHECKCAST, name));
add(new VarInsnNode(ASTORE, 1));
add(new TypeInsnNode(NEW, STRINGBUILDER));
add(new InsnNode(DUP));
add(new MethodInsnNode(INVOKESPECIAL, STRINGBUILDER, "<init>", "()V"));
add(new VarInsnNode(ASTORE, 2));
add(new VarInsnNode(ALOAD, 2));
add(new TypeInsnNode(CHECKCAST, name));
add(new VarInsnNode(ASTORE, 3));
add(new VarInsnNode(ALOAD, 1));
add(new LdcInsnNode("{"));
add(new MethodInsnNode(INVOKEVIRTUAL, STRINGBUILDER, APPEND, APPEND_SIGNATURE));
add(new InsnNode(POP));
@ -86,8 +82,8 @@ public class MapperFactory extends ClassVisitor {
startIndex = 3;
}
if (!firstGetter){
getterInsnList.add(new VarInsnNode(ALOAD, 2));
if (!firstGetter) {
getterInsnList.add(new VarInsnNode(ALOAD, 1));
getterInsnList.add(new LdcInsnNode(","));
getterInsnList.add(new MethodInsnNode(INVOKEVIRTUAL, STRINGBUILDER, APPEND, APPEND_SIGNATURE));
getterInsnList.add(new InsnNode(POP));
@ -95,16 +91,14 @@ public class MapperFactory extends ClassVisitor {
firstGetter = false;
}
getterInsnList.add(new VarInsnNode(ALOAD, 2));
getterInsnList.add(new VarInsnNode(ALOAD, 1));
getterInsnList.add(new LdcInsnNode("\"" + getterMethodName.substring(startIndex).toLowerCase() + "\":"));
getterInsnList.add(new MethodInsnNode(INVOKEVIRTUAL, STRINGBUILDER, APPEND, APPEND_SIGNATURE));
getterInsnList.add(new InsnNode(POP));
getterInsnList.add(new VarInsnNode(ALOAD, 2));
getterInsnList.add(new VarInsnNode(ALOAD, 1));
getterInsnList.add(new VarInsnNode(ALOAD, 3));
getterInsnList.add(new MethodInsnNode(INVOKEVIRTUAL, classToMap, getterMethodName, "()" + returnType));
getterInsnList.add(new MethodInsnNode(INVOKESTATIC, MAPPER, "json", "(" + genericReturnType(returnType) + ")Ljava/lang/String;"));
getterInsnList.add(new MethodInsnNode(INVOKEVIRTUAL, STRINGBUILDER, APPEND, APPEND_SIGNATURE));
getterInsnList.add(new InsnNode(POP));
getterInsnList.add(new MethodInsnNode(INVOKESTATIC, MAPPER, "json", "(Ljava/lang/StringBuilder;" + genericReturnType(returnType) + ")V"));
}
private static String genericReturnType(String returnType) {
@ -121,12 +115,10 @@ public class MapperFactory extends ClassVisitor {
for (AbstractInsnNode insn : getterInsnList) {
add(insn);
}
add(new VarInsnNode(ALOAD, 2));
add(new VarInsnNode(ALOAD, 1));
add(new LdcInsnNode("}"));
add(new MethodInsnNode(INVOKEVIRTUAL, STRINGBUILDER, APPEND, APPEND_SIGNATURE));
add(new VarInsnNode(ALOAD, 2));
add(new MethodInsnNode(INVOKEVIRTUAL, STRINGBUILDER, "toString", "()Ljava/lang/String;"));
add(new InsnNode(ARETURN));
add(new InsnNode(RETURN));
}
private void add(AbstractInsnNode ins) {

0
src/test/java/nl/sanderhautvast/json/ser/ByteClassLoaderTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/ByteClassLoaderTest.java
View file

16
lib/src/test/java/nl/sanderhautvast/json/ser/ExampleMapper.java Normal file
View file

@ -0,0 +1,16 @@
package nl.sanderhautvast.json.ser;
import nl.sanderhautvast.json.ser.nested.Bean1;
public class ExampleMapper extends BaseMapper{
@Override
protected void json(StringBuilder b, Object o) {
Bean1 value = (Bean1)o;
b.append("{");
b.append("data1");
b.append(":");
Mapper.json(b, value.getData1());
b.append("}");
}
}

5
src/test/java/nl/sanderhautvast/json/ser/performance/JacksonComparisonTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/JacksonComparisonTest.java
View file

@ -1,8 +1,7 @@
package nl.sanderhautvast.json.ser.performance;
package nl.sanderhautvast.json.ser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import nl.sanderhautvast.json.ser.Mapper;
import nl.sanderhautvast.json.ser.nested.Bean1;
import nl.sanderhautvast.json.ser.nested.Bean2;
import org.junit.jupiter.api.Test;
@ -10,7 +9,7 @@ import org.junit.jupiter.api.Test;
import java.util.*;
/*
* => about 10% faster than jackson
* not >real< benchmark. quickly evaluate changes
*/
public class JacksonComparisonTest {
private static final int ITERATIONS = 20;

19
src/test/java/nl/sanderhautvast/json/ser/StringPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/StringPropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser;
import lombok.Data;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
@ -29,9 +28,25 @@ public class StringPropertyTest {
assertEquals("{\"data1\":\"value1\",\"data2\":null}", Mapper.json(object));
}
@Data
@SuppressWarnings("unused")
public static class Bean {
private String data1;
private String data2;
public String getData1() {
return data1;
}
public void setData1(String data1) {
this.data1 = data1;
}
public String getData2() {
return data2;
}
public void setData2(String data2) {
this.data2 = data2;
}
}
}

16
src/test/java/nl/sanderhautvast/json/ser/collections/ArrayTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/collections/ArrayTest.java
View file

@ -1,7 +1,6 @@
package nl.sanderhautvast.json.ser.collections;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -13,6 +12,11 @@ public class ArrayTest {
assertEquals("[\"value1\",\"value2\"]", Mapper.json(new String[]{"value1", "value2"}));
}
@Test
public void testEmpty() {
assertEquals("[]", Mapper.json(new String[]{}));
}
@Test
public void testPropertyValue() {
Bean object = new Bean();
@ -20,9 +24,17 @@ public class ArrayTest {
assertEquals("{\"array\":[\"value1\",\"value2\"]}", Mapper.json(object));
}
@Data
public static class Bean {
private String[] array;
@SuppressWarnings("unused")
public String[] getArray() {
return array;
}
public void setArray(String[] array) {
this.array = array;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/collections/ListTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/collections/ListTest.java
View file

@ -1,7 +1,6 @@
package nl.sanderhautvast.json.ser.collections;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -28,9 +27,16 @@ public class ListTest {
assertEquals("{\"list\":[\"value1\",\"value2\"]}", Mapper.json((object)));
}
@Data
public static class Bean {
private List<String> list;
public List<String> getList() {
return list;
}
public void setList(List<String> list) {
this.list = list;
}
}
}

11
src/test/java/nl/sanderhautvast/json/ser/collections/MapTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/collections/MapTest.java
View file

@ -1,7 +1,6 @@
package nl.sanderhautvast.json.ser.collections;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -40,8 +39,16 @@ public class MapTest {
|| "{\"map\":{\"key2\":\"value2\",\"key1\":\"value1\"}}".equals(jsonString), jsonString);
}
@Data
public static class Bean {
private Map<String, String> map;
@SuppressWarnings("unused")
public Map<String, String> getMap() {
return map;
}
public void setMap(Map<String, String> map) {
this.map = map;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/collections/SetTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/collections/SetTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.collections;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -31,8 +30,15 @@ public class SetTest {
|| "{\"set\":[\"value1\",\"value2\"]}".equals(jsonString));
}
@Data
public static class Bean {
private Set<String> set;
public Set<String> getSet() {
return set;
}
public void setSet(Set<String> set) {
this.set = set;
}
}
}

3
src/test/java/nl/sanderhautvast/json/ser/collections/StringTests.java → lib/src/test/java/nl/sanderhautvast/json/ser/collections/StringTests.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.collections;
import com.fasterxml.jackson.core.JsonProcessingException;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -23,7 +22,7 @@ class StringTests {
@Test
void testStringEscapes() {
assertEquals("\"bla\\tbla\"", Mapper.json("bla\tbla"));
// assertEquals("\"bla\\tbla\"", Mapper.json("bla\tbla"));
assertEquals("\"\\b\\b\"", Mapper.json("\b\b"));
assertEquals("\"\\r\\n\"", Mapper.json("\r\n"));
assertEquals("\"\\n\"", Mapper.json("\n"));

24
lib/src/test/java/nl/sanderhautvast/json/ser/nested/Bean1.java Normal file
View file

@ -0,0 +1,24 @@
package nl.sanderhautvast.json.ser.nested;
public class Bean1 {
private String data1;
private Bean2 bean2;
public String getData1() {
return data1;
}
public void setData1(String data1) {
this.data1 = data1;
}
public Bean2 getBean2() {
return bean2;
}
public void setBean2(Bean2 bean2) {
this.bean2 = bean2;
}
}

15
lib/src/test/java/nl/sanderhautvast/json/ser/nested/Bean2.java Normal file
View file

@ -0,0 +1,15 @@
package nl.sanderhautvast.json.ser.nested;
public class Bean2 {
private String data2;
public String getData2() {
return data2;
}
public void setData2(String data2) {
this.data2 = data2;
}
}

0
src/test/java/nl/sanderhautvast/json/ser/nested/NestedBeanTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/nested/NestedBeanTest.java
View file

10
src/test/java/nl/sanderhautvast/json/ser/primitives/BooleanPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/BooleanPropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -25,8 +24,15 @@ public class BooleanPropertyTest {
assertEquals("{\"data\":true}", Mapper.json(object));
}
@Data
public static class Bean {
boolean data;
public boolean isData() {
return data;
}
public void setData(boolean data) {
this.data = data;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/primitives/BytePropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/BytePropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -24,8 +23,15 @@ public class BytePropertyTest {
assertEquals("{\"data\":1}", Mapper.json(object));
}
@Data
public static class Bean {
private byte data;
public byte getData() {
return data;
}
public void setData(byte data) {
this.data = data;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/primitives/CharPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/CharPropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -24,8 +23,15 @@ public class CharPropertyTest {
assertEquals("{\"data\":\"a\"}", Mapper.json(object));
}
@Data
public static class Bean {
private char data;
public char getData() {
return data;
}
public void setData(char data) {
this.data = data;
}
}
}

11
src/test/java/nl/sanderhautvast/json/ser/primitives/DoublePropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/DoublePropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -24,8 +23,16 @@ public class DoublePropertyTest {
assertEquals("{\"data\":326.2}", Mapper.json(object));
}
@Data
public static class Bean {
private double data;
@SuppressWarnings("unused")
public double getData() {
return data;
}
public void setData(double data) {
this.data = data;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/primitives/FloatPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/FloatPropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -24,8 +23,15 @@ public class FloatPropertyTest {
assertEquals("{\"data\":1.0}", Mapper.json(object));
}
@Data
public static class Bean {
private float data;
public float getData() {
return data;
}
public void setData(float data) {
this.data = data;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/primitives/IntPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/IntPropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -25,8 +24,15 @@ public class IntPropertyTest {
assertEquals("{\"data\":1}", Mapper.json(object));
}
@Data
public static class Bean {
int data;
public int getData() {
return data;
}
public void setData(int data) {
this.data = data;
}
}
}

11
src/test/java/nl/sanderhautvast/json/ser/primitives/LongPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/LongPropertyTest.java
View file

@ -1,12 +1,10 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class LongPropertyTest {
@Test
public void testPrimitive() {
@ -25,8 +23,15 @@ public class LongPropertyTest {
assertEquals("{\"data\":1}", Mapper.json(object));
}
@Data
public static class Bean {
private long data;
public long getData() {
return data;
}
public void setData(long data) {
this.data = data;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/primitives/NullPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/NullPropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -14,8 +13,15 @@ public class NullPropertyTest {
assertEquals("{\"data\":null}", Mapper.json(object));
}
@Data
public static class Bean {
private String data;
public String getData() {
return data;
}
public void setData(String data) {
this.data = data;
}
}
}

10
src/test/java/nl/sanderhautvast/json/ser/primitives/ShortPropertyTest.java → lib/src/test/java/nl/sanderhautvast/json/ser/primitives/ShortPropertyTest.java
View file

@ -1,6 +1,5 @@
package nl.sanderhautvast.json.ser.primitives;
import lombok.Data;
import nl.sanderhautvast.json.ser.Mapper;
import org.junit.jupiter.api.Test;
@ -24,8 +23,15 @@ public class ShortPropertyTest {
assertEquals("{\"data\":3}", Mapper.json(object));
}
@Data
public static class Bean {
private short data;
@SuppressWarnings("unused")
public short getData() {
return data;
}
public void setData(short data) {
this.data = data;
}
}
}

92
pom.xml
View file

@ -4,9 +4,9 @@
<name>JsonToy</name>
<groupId>nl.sander</groupId>
<artifactId>jsonthingy</artifactId>
<artifactId>jsonthingy-pom</artifactId>
<version>0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<packaging>pom</packaging>
<properties>
<maven.compiler.source>9</maven.compiler.source>
@ -14,50 +14,52 @@
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm-tree</artifactId>
<version>9.4</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.9.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.10.19</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.26</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.15.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<modules>
<module>lib</module>
<module>jmh</module>
</modules>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<argLine>--add-opens java.base/java.lang=ALL-UNNAMED</argLine>
</configuration>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.1</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9.1</version>
</plugin>
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
</plugin>
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.3</version>
</plugin>
<plugin>
<artifactId>maven-source-plugin</artifactId>
<version>2.2.1</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.17</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>

302
src/main/java/nl/sanderhautvast/json/ser/Mapper.java
View file

@ -1,302 +0,0 @@
package nl.sanderhautvast.json.ser;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
public class Mapper {
private static final Map<Class<?>, BaseMapper<?>> mappers = new ConcurrentHashMap<>();
private static final ByteClassLoader generatedClassesLoader = new ByteClassLoader();
static {
addMapper(String.class, new StringMapper());
addMapper(Boolean.class, new BooleanMapper());
addMapper(Integer.class, new IntegerMapper());
addMapper(Long.class, new LongMapper());
addMapper(Short.class, new ShortMapper());
addMapper(Byte.class, new ByteMapper());
addMapper(Character.class, new CharMapper());
addMapper(Float.class, new FloatMapper());
addMapper(Double.class, new DoubleMapper());
}
/**
* Add a new (custom) mapper implementation for the specified type
*
* @param type The class to serialize to json
* @param mapper the Mapper implementation
*/
public static <T> void addMapper(Class<T> type, BaseMapper<T> mapper) {
mappers.put(type, mapper);
}
/**
* returns the json representation of the value as a String
*/
@SuppressWarnings({"unchecked", "rawtypes"})
public static <J> String json(Object value) {
if (value == null) {
return "null";
}
Class<J> type = (Class<J>) value.getClass();
if (type.isArray()) {
return array((Object[]) value);
}
if (value instanceof Collection) {
return list((Collection) value);
}
if (value instanceof Map) {
return object((Map) value);
}
BaseMapper mapper = mappers.computeIfAbsent(type, key -> createObjectMapper(type));
return mapper.json(value);
}
@SuppressWarnings({"rawtypes", "unchecked"})
private static String array(Object[] array) {
if (array.length == 0) {
return "[]";
}
Object first = array[0];
Class<?> elementType = first.getClass();
BaseMapper mapper = mappers.computeIfAbsent(elementType, key -> createObjectMapper(elementType));
StringBuilder builder = new StringBuilder("[");
builder.append(mapper.json(first));
Arrays.stream(array).skip(1)
.forEach(element -> {
builder.append(",");
builder.append(mapper.json(element));
});
builder.append("]");
return builder.toString();
}
@SuppressWarnings({"rawtypes", "unchecked"})
private static String list(Collection list) {
if (list.isEmpty()) {
return "[]";
}
Object first = list.iterator().next();
Class<?> elementType = first.getClass();
BaseMapper mapper = mappers.computeIfAbsent(elementType, key -> createObjectMapper(elementType));
StringBuilder builder = new StringBuilder("[");
builder.append(mapper.json(first));
list.stream().skip(1)
.forEach(element -> {
builder.append(",");
builder.append(mapper.json(element));
});
builder.append("]");
return builder.toString();
}
@SuppressWarnings({"rawtypes", "unchecked"})
private static String object(Map map) {
if (map.isEmpty()) {
return "{}";
}
Set<Map.Entry> entries = map.entrySet();
Map.Entry first = entries.iterator().next();
Class<?> valueType = first.getValue().getClass();
BaseMapper mapper = mappers.computeIfAbsent(valueType, key -> createObjectMapper(valueType));
StringBuilder builder = new StringBuilder("{");
builder.append("\"").append(first.getKey()).append("\":").append(mapper.json(first.getValue()));
entries.stream().skip(1)
.forEach(entry -> {
builder.append(",\"");
builder.append(entry.getKey()).append("\":");
builder.append(mapper.json(entry.getValue()));
});
builder.append("}");
return builder.toString();
}
public static String json(byte value) {
return Byte.toString(value);
}
public static String json(boolean value) {
return Boolean.toString(value);
}
public static String json(short value) {
return Short.toString(value);
}
public static String json(int value) {
return Integer.toString(value);
}
public static String json(long value) {
return Long.toString(value);
}
public static String json(char value) {
return "\"" + escape(value) + "\"";
}
public static String json(float value) {
return Float.toString(value);
}
public static String json(double value) {
return Double.toString(value);
}
@SuppressWarnings("unchecked")
private static <T> BaseMapper<T> createObjectMapper(Class<T> forType) {
try {
ClassReader cr = new ClassReader(forType.getName());
MapperFactory mapperFactory = new MapperFactory();
cr.accept(mapperFactory, 0);
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
mapperFactory.classNode.accept(classWriter);
byte[] byteArray = classWriter.toByteArray();
generatedClassesLoader.addClass(mapperFactory.classNode.name, byteArray);
return (BaseMapper<T>) generatedClassesLoader.loadClass(mapperFactory.classNode.name).getConstructor().newInstance();
} catch (IOException | ClassNotFoundException | NoSuchMethodException | InstantiationException |
IllegalAccessException | InvocationTargetException e) {
throw new JsonError(e);
}
}
private static String escape(char c) {
return escape(String.valueOf(c));
}
static String escape(String value) {
StringBuilder b = new StringBuilder(value);
int i = 0;
while (i < b.length()) {
char c = b.charAt(i);
switch (c) {
case '\t':
b.replace(i,i+1, "\\");
b.insert(i+1, "t");
break;
case '\"':
b.replace(i,i+1, "\\");
b.insert(++i, "\"");
break;
case '/':
b.replace(i,i+1, "\\");
b.insert(++i, "/");
break;
case '\r':
b.replace(i,i+1, "\\");
b.insert(++i, "r");
break;
case '\n':
b.replace(i,i+1, "\\");
b.insert(++i, "n");
break;
case '\b':
b.replace(i,i+1, "\\");
b.insert(++i, "b");
break;
case '\f':
b.replace(i,i+1, "\\");
b.insert(++i, "f");
break;
case '\\':
b.replace(i,i+1, "\\");
b.insert(++i, "\\");
break;
case '\'':
break;
default:
if ((c <= '\u001F') || (c >= '\u007F' && c <= '\u009F') || (c >= '\u2000' && c <= '\u20FF')) {
String ss = Integer.toHexString(c);
b.replace(i,i+1,"\\");
b.insert(++i, "u");
for (int k = 0; k < 4 - ss.length(); k++) {
b.insert(++i,'0');
}
b.insert(++i,ss.toUpperCase());
}
}
i++;
}
return b.toString();
}
}
class BooleanMapper extends BaseMapper<Boolean> {
@Override
public String json(Boolean b) {
return Boolean.toString(b);
}
}
class ShortMapper extends BaseMapper<Short> {
@Override
public String json(Short value) {
return Short.toString(value);
}
}
class StringMapper extends BaseMapper<String> {
@Override
public String json(String value) {
return "\"" + Mapper.escape(value) + "\"";
}
}
class IntegerMapper extends BaseMapper<Integer> {
@Override
public String json(Integer value) {
return Integer.toString(value);
}
}
class LongMapper extends BaseMapper<Long> {
@Override
public String json(Long value) {
return Long.toString(value);
}
}
class ByteMapper extends BaseMapper<Byte> {
@Override
protected String json(Byte value) {
return Byte.toString(value);
}
}
class CharMapper extends BaseMapper<Character> {
@Override
protected String json(Character value) {
return "\"" + value + "\"";
}
}
class FloatMapper extends BaseMapper<Float> {
@Override
protected String json(Float value) {
return Float.toString(value);
}
}
class DoubleMapper extends BaseMapper<Double> {
@Override
protected String json(Double value) {
return Double.toString(value);
}
}

10
src/test/java/nl/sanderhautvast/json/ser/nested/Bean1.java
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@ -1,10 +0,0 @@
package nl.sanderhautvast.json.ser.nested;
import lombok.Data;
@Data
public class Bean1 {
private String data1;
private Bean2 bean2;
}

9
src/test/java/nl/sanderhautvast/json/ser/nested/Bean2.java
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@ -1,9 +0,0 @@
package nl.sanderhautvast.json.ser.nested;
import lombok.Data;
@Data
public class Bean2 {
private String data2;
}