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[BAEL-19675] - Move articles out of jackson part 2

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catalin-burcea
2019-11-26 12:28:18 +02:00
parent 9f25b72ca4
commit 3d35439fb5
119 changed files with 1087 additions and 469 deletions
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jackson-annotations/src/test/java/com/baeldung/jackson/ignore/JacksonSerializationIgnoreUnitTest.java
-85
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@@ -18,7 +18,6 @@ import com.baeldung.jackson.ignore.dtos.MyMixInForIgnoreType;
import com.baeldung.jackson.ignore.dtos.MyDtoIgnoreField;
import com.baeldung.jackson.ignore.dtos.MyDtoIgnoreFieldByName;
import com.baeldung.jackson.ignore.dtos.MyDtoIgnoreNull;
import com.baeldung.jackson.ignore.dtos.MyDtoNullKeySerializer;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParseException;
@@ -191,88 +190,4 @@ public class JacksonSerializationIgnoreUnitTest {
System.out.println(dtoAsString);
}
// map
@Test
public final void givenIgnoringMapNullValue_whenWritingMapObjectWithNullValue_thenIgnored() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
// mapper.configure(SerializationFeature.WRITE_NULL_MAP_VALUES, false);
mapper.setSerializationInclusion(Include.NON_NULL);
final MyDto dtoObject1 = new MyDto();
final Map<String, MyDto> dtoMap = new HashMap<String, MyDto>();
dtoMap.put("dtoObject1", dtoObject1);
dtoMap.put("dtoObject2", null);
final String dtoMapAsString = mapper.writeValueAsString(dtoMap);
assertThat(dtoMapAsString, containsString("dtoObject1"));
assertThat(dtoMapAsString, not(containsString("dtoObject2")));
System.out.println(dtoMapAsString);
}
@Test
public final void givenIgnoringMapValueObjectWithNullField_whenWritingMapValueObjectWithNullField_thenIgnored() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
mapper.setSerializationInclusion(Include.NON_NULL);
final MyDto dtoObject = new MyDto();
final Map<String, MyDto> dtoMap = new HashMap<String, MyDto>();
dtoMap.put("dtoObject", dtoObject);
final String dtoMapAsString = mapper.writeValueAsString(dtoMap);
assertThat(dtoMapAsString, containsString("dtoObject"));
assertThat(dtoMapAsString, not(containsString("stringValue")));
System.out.println(dtoMapAsString);
}
@Test
public final void givenAllowingMapObjectWithNullKey_whenWriting_thenCorrect() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
mapper.getSerializerProvider()
.setNullKeySerializer(new MyDtoNullKeySerializer());
final MyDto dtoObject1 = new MyDto();
dtoObject1.setStringValue("dtoObjectString1");
final MyDto dtoObject2 = new MyDto();
dtoObject2.setStringValue("dtoObjectString2");
final Map<String, MyDto> dtoMap = new HashMap<String, MyDto>();
dtoMap.put(null, dtoObject1);
dtoMap.put("obj2", dtoObject2);
final String dtoMapAsString = mapper.writeValueAsString(dtoMap);
System.out.println(dtoMapAsString);
assertThat(dtoMapAsString, containsString("\"\""));
assertThat(dtoMapAsString, containsString("dtoObjectString1"));
assertThat(dtoMapAsString, containsString("obj2"));
}
@Test
public final void givenAllowingMapObjectOneNullKey_whenWritingMapObjectWithTwoNullKeys_thenOverride() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
mapper.getSerializerProvider()
.setNullKeySerializer(new MyDtoNullKeySerializer());
final MyDto dtoObject1 = new MyDto();
dtoObject1.setStringValue("dtoObject1String");
final MyDto dtoObject2 = new MyDto();
dtoObject2.setStringValue("dtoObject2String");
final Map<String, MyDto> dtoMap = new HashMap<String, MyDto>();
dtoMap.put(null, dtoObject1);
dtoMap.put(null, dtoObject2);
final String dtoMapAsString = mapper.writeValueAsString(dtoMap);
assertThat(dtoMapAsString, not(containsString("dtoObject1String")));
assertThat(dtoMapAsString, containsString("dtoObject2String"));
System.out.println(dtoMapAsString);
}
}
jackson-annotations/src/test/java/com/baeldung/jackson/ignore/dtos/MyDtoNullKeySerializer.java
-27
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@@ -1,27 +0,0 @@
package com.baeldung.jackson.ignore.dtos;
import java.io.IOException;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;
public class MyDtoNullKeySerializer extends StdSerializer<Object> {
private static final long serialVersionUID = -4478531309177369056L;
public MyDtoNullKeySerializer() {
this(null);
}
public MyDtoNullKeySerializer(final Class<Object> t) {
super(t);
}
@Override
public void serialize(final Object value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException, JsonProcessingException {
jgen.writeFieldName("");
}
}