Examples for the second version of the article

2020-07-12 23:29:55 +02:00
parent 57dcc48b92
commit 64dc02f18f
8 changed files with 112 additions and 109 deletions
@@ -0,0 +1,41 @@
+package com.baeldung.jsonld.deserialization.jsonldjava.jackson;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.IOException;
+import java.util.HashMap;
+
+import org.junit.jupiter.api.Test;
+
+import com.baeldung.jsonld.deserialization.jsonldjava.jackson.Person.Link;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.github.jsonldjava.core.JsonLdOptions;
+import com.github.jsonldjava.core.JsonLdProcessor;
+import com.github.jsonldjava.utils.JsonUtils;
+
+public class JacksonDeserializationUnitTest {
+
+    @Test
+    void givenAJsonLdObject_whenCompactIsUsedWithEmptyContext_thenItCanBeDeserializedIntoAJacksonAnnotatedJavaObject() throws IOException {
+        String inputJsonLd = "{\"@context\":{\"@vocab\":\"http://schema.org/\",\"knows\":{\"@type\":\"@id\"}},\"@type\":\"Person\",\"@id\":\"http://example.com/person/1234\",\"name\":\"Example Name\",\"knows\":\"http://example.com/person/2345\"}";
+
+        Object jsonObject = JsonUtils.fromString(inputJsonLd);
+        Object compact = JsonLdProcessor.compact(jsonObject, new HashMap(), new JsonLdOptions());
+        String compactContent = JsonUtils.toString(compact);
+
+        assertEquals("{\"@id\":\"http://example.com/person/1234\",\"@type\":\"http://schema.org/Person\",\"http://schema.org/knows\":{\"@id\":\"http://example.com/person/2345\"},\"http://schema.org/name\":\"Example Name\"}", compactContent);
+
+        ObjectMapper objectMapper = new ObjectMapper();
+        Person person = objectMapper.readValue(compactContent, Person.class);
+
+        Person expectedPerson = new Person();
+        expectedPerson.id = "http://example.com/person/1234";
+        expectedPerson.name = "Example Name";
+        expectedPerson.knows = new Link();
+        expectedPerson.knows.id = "http://example.com/person/2345";
+
+        assertEquals(expectedPerson.id, person.id);
+        assertEquals(expectedPerson.name, person.name);
+        assertEquals(expectedPerson.knows.id, person.knows.id);
+    }
+}
@@ -0,0 +1,19 @@
+package com.baeldung.jsonld.deserialization.jsonldjava.jackson;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class Person {
+    @JsonProperty("@id")
+    public String id;
+    @JsonProperty("http://schema.org/name")
+    public String name;
+    @JsonProperty("http://schema.org/knows")
+    public Link knows;
+
+    public static class Link {
+        @JsonProperty("@id")
+        public String id;
+    }
+}
@@ -0,0 +1,69 @@
+package com.baeldung.jsonld.serialization.hydrajsonld;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.BeanDescription;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationConfig;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
+import com.fasterxml.jackson.databind.ser.std.BeanSerializerBase;
+
+import de.escalon.hypermedia.hydra.mapping.Expose;
+import de.escalon.hypermedia.hydra.mapping.Vocab;
+import de.escalon.hypermedia.hydra.serialize.JacksonHydraSerializer;
+
+public class HydraJsonldSerializationUnitTest {
+    @Vocab("http://example.com/vocab/")
+    @Expose("person")
+    static class Person {
+        @JsonProperty("@id")
+        public String id;
+        @Expose("fullName")
+        public String name;
+    }
+
+    @Test
+    void givenAHydraJsonldAnnotatedObject_whenJacksonHydraSerializerIsUsed_thenAJsonLdDocumentIsGenerated() throws JsonProcessingException {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(getJacksonHydraSerializerModule());
+        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+
+        Person person = new Person();
+        person.id = "http://example.com/person/1234";
+        person.name = "Example Name";
+
+        String personJsonLd = objectMapper.writeValueAsString(person);
+
+        assertEquals("{\"@context\":{\"@vocab\":\"http://example.com/vocab/\",\"name\":\"fullName\"},\"@type\":\"person\",\"name\":\"Example Name\",\"@id\":\"http://example.com/person/1234\"}", personJsonLd);
+    }
+
+    static SimpleModule getJacksonHydraSerializerModule() {
+        return new SimpleModule() {
+
+            @Override
+            public void setupModule(SetupContext context) {
+                super.setupModule(context);
+
+                context.addBeanSerializerModifier(new BeanSerializerModifier() {
+
+                    @Override
+                    public JsonSerializer<?> modifySerializer(SerializationConfig config, BeanDescription beanDesc, JsonSerializer<?> serializer) {
+
+                        if (serializer instanceof BeanSerializerBase) {
+                            return new JacksonHydraSerializer((BeanSerializerBase) serializer);
+                        } else {
+                            return serializer;
+                        }
+                    }
+                });
+            }
+        };
+    }
+}
@@ -0,0 +1,42 @@
+package com.baeldung.jsonld.serialization.jacksonjsonld;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import ioinformarics.oss.jackson.module.jsonld.JsonldModule;
+import ioinformarics.oss.jackson.module.jsonld.annotation.JsonldId;
+import ioinformarics.oss.jackson.module.jsonld.annotation.JsonldLink;
+import ioinformarics.oss.jackson.module.jsonld.annotation.JsonldNamespace;
+import ioinformarics.oss.jackson.module.jsonld.annotation.JsonldProperty;
+import ioinformarics.oss.jackson.module.jsonld.annotation.JsonldResource;
+import ioinformarics.oss.jackson.module.jsonld.annotation.JsonldType;
+
+public class JacksonJsonLdSerializationUnitTest {
+    @JsonldResource
+    @JsonldNamespace(name = "s", uri = "http://schema.org/")
+    @JsonldType("s:Person")
+    @JsonldLink(rel = "s:knows", name = "knows", href = "http://example.com/person/2345")
+    static class Person {
+        @JsonldId
+        public String id = "http://example.com/person/1234";
+        @JsonldProperty("s:name")
+        public String name = "Example Name";
+    }
+
+    @Test
+    void givenAJacksonJsonldAnnotatedObject_whenJsonldModuleIsUsed_thenAJsonLdDocumentIsGenerated() throws JsonProcessingException {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new JsonldModule());
+
+        Person person = new Person();
+        String personJsonLd = objectMapper.writeValueAsString(person);
+
+        assertEquals(
+            "{\"@type\":\"s:Person\",\"@context\":{\"s\":\"http://schema.org/\",\"name\":\"s:name\",\"knows\":{\"@id\":\"s:knows\",\"@type\":\"@id\"}},\"name\":\"Example Name\",\"@id\":\"http://example.com/person/1234\",\"knows\":\"http://example.com/person/2345\"}",
+            personJsonLd);
+    }
+}