bael-2437 (#5972)

jackson/src/main/java/com/baeldung/jackson/deserialization/dynamicobject/ProductJsonAnySetter.java

@@ -0,0 +1,39 @@
+package com.baeldung.jackson.deserialization.dynamicobject;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonAnySetter;
+
+public class ProductJsonAnySetter {
+
+    private String name;
+    private String category;
+    private Map<String, Object> details = new LinkedHashMap<>();
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public Map<String, Object> getDetails() {
+        return details;
+    }
+
+    @JsonAnySetter
+    public void setDetail(String key, Object value) {
+        details.put(key, value);
+    }
+
+}

jackson/src/main/java/com/baeldung/jackson/deserialization/dynamicobject/ProductJsonNode.java

@@ -0,0 +1,35 @@
+package com.baeldung.jackson.deserialization.dynamicobject;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+public class ProductJsonNode {
+
+    private String name;
+    private String category;
+    private JsonNode details;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public JsonNode getDetails() {
+        return details;
+    }
+
+    public void setDetails(JsonNode details) {
+        this.details = details;
+    }
+
+}

jackson/src/main/java/com/baeldung/jackson/deserialization/dynamicobject/ProductMap.java

@@ -0,0 +1,35 @@
+package com.baeldung.jackson.deserialization.dynamicobject;
+
+import java.util.Map;
+
+public class ProductMap {
+
+    private String name;
+    private String category;
+    private Map<String, Object> details;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public Map<String, Object> getDetails() {
+        return details;
+    }
+
+    public void setDetails(Map<String, Object> details) {
+        this.details = details;
+    }
+
+}

jackson/src/test/java/com/baeldung/jackson/deserialization/dynamicobject/DynamicObjectDeserializationUnitTest.java

@@ -0,0 +1,69 @@
+package com.baeldung.jackson.deserialization.dynamicobject;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.IOException;
+import java.util.Scanner;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class DynamicObjectDeserializationUnitTest {
+
+    private ObjectMapper objectMapper;
+
+    @BeforeEach
+    void setup() {
+        objectMapper = new ObjectMapper();
+    }
+
+    private String readResource(String path) {
+        try (Scanner scanner = new Scanner(getClass().getResourceAsStream(path), "UTF-8")) {
+            return scanner.useDelimiter("\\A").next();
+        }
+    }
+
+    @Test
+    void givenJsonString_whenParsingToJsonNode_thenItMustContainDynamicProperties() throws JsonParseException, JsonMappingException, IOException {
+        // given
+        String json = readResource("/deserialize-dynamic-object/embedded.json");
+
+        // when
+        ProductJsonNode product = objectMapper.readValue(json, ProductJsonNode.class);
+
+        // then
+        assertThat(product.getName()).isEqualTo("Pear yPhone 72");
+        assertThat(product.getDetails().get("audioConnector").asText()).isEqualTo("none");
+    }
+
+    @Test
+    void givenJsonString_whenParsingToMap_thenItMustContainDynamicProperties() throws JsonParseException, JsonMappingException, IOException {
+        // given
+        String json = readResource("/deserialize-dynamic-object/embedded.json");
+
+        // when
+        ProductMap product = objectMapper.readValue(json, ProductMap.class);
+
+        // then
+        assertThat(product.getName()).isEqualTo("Pear yPhone 72");
+        assertThat(product.getDetails().get("audioConnector")).isEqualTo("none");
+    }
+
+    @Test
+    void givenJsonString_whenParsingWithJsonAnySetter_thenItMustContainDynamicProperties() throws JsonParseException, JsonMappingException, IOException {
+        // given
+        String json = readResource("/deserialize-dynamic-object/flat.json");
+
+        // when
+        ProductJsonAnySetter product = objectMapper.readValue(json, ProductJsonAnySetter.class);
+
+        // then
+        assertThat(product.getName()).isEqualTo("Pear yPhone 72");
+        assertThat(product.getDetails().get("audioConnector")).isEqualTo("none");
+    }
+
+}

jackson/src/test/resources/deserialize-dynamic-object/embedded.json

@@ -0,0 +1,8 @@
+{
+    "name": "Pear yPhone 72",
+    "category": "cellphone",
+    "details": {
+        "displayAspectRatio": "97:3",
+        "audioConnector": "none"
+    }
+}

jackson/src/test/resources/deserialize-dynamic-object/flat.json

@@ -0,0 +1,6 @@
+{
+    "name": "Pear yPhone 72",
+    "category": "cellphone",
+    "displayAspectRatio": "97:3",
+    "audioConnector": "none"
+}