feat: implement java code and tests for jackson 2.17.2

.gitignore

@@ -1,24 +1,39 @@
-# Compiled class file
-*.class
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
 
-# Log file
-*.log
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+.idea/
+*.iws
+*.iml
+*.ipr
 
-# BlueJ files
-*.ctxt
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
 
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
 
-# Package Files #
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
+### VS Code ###
+.vscode/
 
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-replay_pid*
+### Mac OS ###
+.DS_Store

README.md

@@ -1 +1,5 @@
-# jackson-databind-sorting-issue-java
+# jackson-databind-sorting-issue-java
+
+Related issues:
+- [Jackson Databind Issue #4751](https://github.com/FasterXML/jackson-databind/issues/4751)
+- [Jackson Databind Issue #4752](https://github.com/FasterXML/jackson-databind/issues/4752)

pom.xml

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+
+    <groupId>com.arvgord</groupId>
+    <artifactId>jackson-databind-sorting-issue-java</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <jackson.version>2.17.2</jackson.version>
+        <junit.version>5.8.1</junit.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-annotations</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
+                <configuration>
+                    <source>${maven.compiler.source}</source>
+                    <target>${maven.compiler.target}</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.5.1</version>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/java/com/arvgord/FirstObject.java

@@ -0,0 +1,23 @@
+package com.arvgord;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+@JsonAutoDetect(
+        fieldVisibility = JsonAutoDetect.Visibility.ANY,
+        getterVisibility = JsonAutoDetect.Visibility.NONE
+)
+public class FirstObject {
+
+    @JsonAnySetter
+    @JsonAnyGetter
+    private Map<String, Object> data = new LinkedHashMap<>();
+
+    public String getTransactionId() {
+        return (String) data.get("transactionId");
+    }
+}

src/main/java/com/arvgord/SecondObject.java

@@ -0,0 +1,30 @@
+package com.arvgord;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+@JsonAutoDetect(
+        fieldVisibility = JsonAutoDetect.Visibility.ANY,
+        getterVisibility = JsonAutoDetect.Visibility.NONE
+)
+public class SecondObject {
+
+    @JsonAnySetter
+    @JsonAnyGetter
+    private Map<String, Object> data = new LinkedHashMap<>();
+    private String transactionId;
+
+    public SecondObject() {}
+
+    SecondObject(String transactionId) {
+        this.transactionId = transactionId;
+    }
+
+    public String getTransactionId() {
+        return transactionId;
+    }
+}

src/main/java/com/arvgord/ThirdObject.java

@@ -0,0 +1,34 @@
+package com.arvgord;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+@JsonAutoDetect(
+        fieldVisibility = JsonAutoDetect.Visibility.ANY,
+        getterVisibility = JsonAutoDetect.Visibility.NONE
+)
+public class ThirdObject {
+
+    @JsonAnyGetter
+    private Map<String, Object> data = new LinkedHashMap<>();
+    private String transactionId;
+
+    ThirdObject() {}
+
+    public ThirdObject(String transactionId) {
+        this.transactionId = transactionId;
+    }
+
+    @JsonAnySetter
+    public void setData(String key, Object value) {
+        this.data.put(key, value);
+    }
+
+    public String getTransactionId() {
+        return transactionId;
+    }
+}

src/test/java/com/arvgord/JacksonSortingTest.java

@@ -0,0 +1,80 @@
+package com.arvgord;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class JacksonSortingTest {
+
+    private final ObjectMapper objectMapper = new ObjectMapper();
+
+    private final String JSON_INPUT_FIRST = """
+        {
+            "b": 2,
+            "a": 1,
+            "transactionId": "test",
+            "c": [
+                {
+                    "id": "3",
+                    "value": "c"
+                },
+                {
+                    "id": "1",
+                    "value": "a"
+                },
+                {
+                    "id": "2",
+                    "value": "b"
+                }
+            ]
+        }
+    """;
+
+    private final String JSON_INPUT_SECOND_AND_THIRD = """
+        {
+            "transactionId": "test",
+            "b": 2,
+            "a": 1,
+            "c": [
+                {
+                    "id": "3",
+                    "value": "c"
+                },
+                {
+                    "id": "1",
+                    "value": "a"
+                },
+                {
+                    "id": "2",
+                    "value": "b"
+                }
+            ]
+        }
+    """;
+
+    private <T> void testSerializationDeserialization(String jsonInput, Class<T> clazz) throws Exception {
+        T deserializedObject = objectMapper.readValue(jsonInput, clazz);
+        String serializedJson = objectMapper.writeValueAsString(deserializedObject);
+
+        String expectedJson = objectMapper.readTree(jsonInput).toPrettyString();
+        String actualJson = objectMapper.readTree(serializedJson).toPrettyString();
+
+        assertEquals(expectedJson, actualJson);
+    }
+
+    @Test
+    public void testSerializationAndDeserializationForFirstObject() throws Exception {
+        testSerializationDeserialization(JSON_INPUT_FIRST, FirstObject.class);
+    }
+
+    @Test
+    public void testSerializationAndDeserializationForSecondObject() throws Exception {
+        testSerializationDeserialization(JSON_INPUT_SECOND_AND_THIRD, SecondObject.class);
+    }
+
+    @Test
+    public void testSerializationAndDeserializationForThirdObject() throws Exception {
+        testSerializationDeserialization(JSON_INPUT_SECOND_AND_THIRD, ThirdObject.class);
+    }
+}