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mapping work

This commit is contained in:
eugenp 2013-12-24 01:38:09 +02:00
parent 8118dd3c65
commit aa0030d546
4 changed files with 238 additions and 149 deletions
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6
jackson/src/test/java/dtos/MyDtoNoAccessors.java
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@ -2,9 +2,9 @@ package dtos;
public class MyDtoNoAccessors { public class MyDtoNoAccessors {
private String stringValue; String stringValue;
private int intValue; int intValue;
private boolean booleanValue; boolean booleanValue;
public MyDtoNoAccessors() { public MyDtoNoAccessors() {
super(); super();

25
jackson/src/test/java/dtos/MyDtoNoAccessorsAndFieldVisibility.java Normal file
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@ -0,0 +1,25 @@
package dtos;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
@JsonAutoDetect(fieldVisibility = Visibility.ANY)
public class MyDtoNoAccessorsAndFieldVisibility {
String stringValue;
int intValue;
boolean booleanValue;
public MyDtoNoAccessorsAndFieldVisibility() {
super();
}
public MyDtoNoAccessorsAndFieldVisibility(final String stringValue, final int intValue, final boolean booleanValue) {
super();
this.stringValue = stringValue;
this.intValue = intValue;
this.booleanValue = booleanValue;
}
}

187
jackson/src/test/java/org/baeldung/jackson/test/JacksonSerializationIgnoreUnitTest.java Normal file
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@ -0,0 +1,187 @@
package org.baeldung.jackson.test;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.not;
import static org.junit.Assert.assertThat;
import java.io.IOException;
import org.junit.Test;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
import com.fasterxml.jackson.databind.ser.FilterProvider;
import com.fasterxml.jackson.databind.ser.PropertyFilter;
import com.fasterxml.jackson.databind.ser.PropertyWriter;
import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
import dtos.MyDto;
import dtos.MyDtoIgnoreField;
import dtos.MyDtoIgnoreFieldByName;
import dtos.MyDtoIgnoreNull;
import dtos.MyDtoIncludeNonDefault;
import dtos.MyDtoWithFilter;
import dtos.MyMixInForString;
public class JacksonSerializationIgnoreUnitTest {
// tests - single entity to json
// ignore
@Test
public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasOnlyDefaultValues_whenSerializing_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final String dtoAsString = mapper.writeValueAsString(new MyDtoIncludeNonDefault());
assertThat(dtoAsString, not(containsString("intValue")));
System.out.println(dtoAsString);
}
@Test
public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasNonDefaultValue_whenSerializing_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final MyDtoIncludeNonDefault dtoObject = new MyDtoIncludeNonDefault();
dtoObject.setBooleanValue(true);
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("booleanValue"));
System.out.println(dtoAsString);
}
@Test
public final void givenFieldIsIgnoredByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final MyDtoIgnoreFieldByName dtoObject = new MyDtoIgnoreFieldByName();
dtoObject.setBooleanValue(true);
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
System.out.println(dtoAsString);
}
@Test
public final void givenFieldIsIgnoredDirectly_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final MyDtoIgnoreField dtoObject = new MyDtoIgnoreField();
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
System.out.println(dtoAsString);
}
@Test
public final void givenFieldTypeIsIgnored_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
mapper.addMixInAnnotations(String.class, MyMixInForString.class);
final MyDto dtoObject = new MyDto();
dtoObject.setBooleanValue(true);
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("intValue"));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, not(containsString("stringValue")));
System.out.println(dtoAsString);
}
@Test
public final void givenTypeHasFilterThatIgnoresFieldByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final SimpleBeanPropertyFilter theFilter = SimpleBeanPropertyFilter.serializeAllExcept("intValue");
final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
dtoObject.setIntValue(12);
final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, containsString("stringValue"));
System.out.println(dtoAsString);
}
@Test
public final void givenTypeHasFilterThatIgnoresNegativeInt_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final PropertyFilter theFilter = new SimpleBeanPropertyFilter() {
@Override
public final void serializeAsField(final Object pojo, final JsonGenerator jgen, final SerializerProvider provider, final PropertyWriter writer) throws Exception {
if (include(writer)) {
if (!writer.getName().equals("intValue")) {
writer.serializeAsField(pojo, jgen, provider);
return;
}
final int intValue = ((MyDtoWithFilter) pojo).getIntValue();
if (intValue >= 0) {
writer.serializeAsField(pojo, jgen, provider);
}
} else if (!jgen.canOmitFields()) { // since 2.3
writer.serializeAsOmittedField(pojo, jgen, provider);
}
}
@Override
protected final boolean include(final BeanPropertyWriter writer) {
return true;
}
@Override
protected final boolean include(final PropertyWriter writer) {
return true;
}
};
final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
dtoObject.setIntValue(-1);
final ObjectMapper mapper = new ObjectMapper();
final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, containsString("stringValue"));
System.out.println(dtoAsString);
}
@Test
public final void givenIgnoringNullFieldsOnClass_whenWritingObjectWithNullField_thenFieldIsIgnored() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
final MyDtoIgnoreNull dtoObject = new MyDtoIgnoreNull();
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("intValue"));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, not(containsString("stringValue")));
System.out.println(dtoAsString);
}
@Test
public final void givenIgnoringNullFieldsGlobally_whenWritingObjectWithNullField_thenIgnored() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
mapper.setSerializationInclusion(Include.NON_NULL);
final MyDto dtoObject = new MyDto();
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("intValue"));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, not(containsString("stringValue")));
System.out.println(dtoAsString);
}
}

169
jackson/src/test/java/org/baeldung/jackson/test/JacksonSerializationUnitTest.java
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@ -2,6 +2,7 @@ package org.baeldung.jackson.test;
import static org.hamcrest.Matchers.containsString; import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.not; import static org.hamcrest.Matchers.not;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertThat; import static org.junit.Assert.assertThat;
import java.io.IOException; import java.io.IOException;
@ -9,52 +10,30 @@ import java.util.List;
import org.junit.Test; import org.junit.Test;
import com.fasterxml.jackson.annotation.JsonInclude.Include; import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.core.JsonParseException; import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
import com.fasterxml.jackson.databind.ser.FilterProvider;
import com.fasterxml.jackson.databind.ser.PropertyFilter;
import com.fasterxml.jackson.databind.ser.PropertyWriter;
import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
import com.google.common.collect.Lists; import com.google.common.collect.Lists;
import dtos.MyDto; import dtos.MyDto;
import dtos.MyDtoFieldNameChanged; import dtos.MyDtoFieldNameChanged;
import dtos.MyDtoIgnoreField; import dtos.MyDtoNoAccessors;
import dtos.MyDtoIgnoreFieldByName; import dtos.MyDtoNoAccessorsAndFieldVisibility;
import dtos.MyDtoIgnoreNull;
import dtos.MyDtoIncludeNonDefault;
import dtos.MyDtoWithFilter;
import dtos.MyMixInForString;
public class JacksonSerializationUnitTest { public class JacksonSerializationUnitTest {
// tests - single entity to json // tests - single entity to json
@Test @Test
public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasOnlyDefaultValues_whenSerializing_thenCorrect() throws JsonParseException, IOException { public final void whenSerializing_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper(); final ObjectMapper mapper = new ObjectMapper();
final String dtoAsString = mapper.writeValueAsString(new MyDtoIncludeNonDefault()); final String dtoAsString = mapper.writeValueAsString(new MyDto());
assertThat(dtoAsString, not(containsString("intValue")));
System.out.println(dtoAsString);
}
@Test
public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasNonDefaultValue_whenSerializing_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final MyDtoIncludeNonDefault dtoObject = new MyDtoIncludeNonDefault();
dtoObject.setBooleanValue(true);
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("intValue"));
assertThat(dtoAsString, containsString("stringValue"));
assertThat(dtoAsString, containsString("booleanValue")); assertThat(dtoAsString, containsString("booleanValue"));
System.out.println(dtoAsString);
} }
@Test @Test
@ -70,134 +49,32 @@ public class JacksonSerializationUnitTest {
System.out.println(dtoAsString); System.out.println(dtoAsString);
} }
// ignore @Test(expected = JsonMappingException.class)
public final void givenObjectHasNoAccessors_whenSerializing_thenException() throws JsonParseException, IOException {
final String dtoAsString = new ObjectMapper().writeValueAsString(new MyDtoNoAccessors());
@Test assertThat(dtoAsString, notNullValue());
public final void givenFieldIsIgnoredByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final MyDtoIgnoreFieldByName dtoObject = new MyDtoIgnoreFieldByName();
dtoObject.setBooleanValue(true);
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
System.out.println(dtoAsString);
} }
@Test @Test
public final void givenFieldIsIgnoredDirectly_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException { public final void givenObjectHasNoAccessors_whenSerializingWithPrivateFieldsVisibility_thenNoException() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper(); final ObjectMapper objectMapper = new ObjectMapper();
final MyDtoIgnoreField dtoObject = new MyDtoIgnoreField(); objectMapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
final String dtoAsString = objectMapper.writeValueAsString(new MyDtoNoAccessors());
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
System.out.println(dtoAsString);
}
@Test
public final void givenFieldTypeIsIgnored_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
mapper.addMixInAnnotations(String.class, MyMixInForString.class);
final MyDto dtoObject = new MyDto();
dtoObject.setBooleanValue(true);
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("intValue")); assertThat(dtoAsString, containsString("intValue"));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, not(containsString("stringValue")));
System.out.println(dtoAsString);
}
@Test
public final void givenTypeHasFilterThatIgnoresFieldByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper();
final SimpleBeanPropertyFilter theFilter = SimpleBeanPropertyFilter.serializeAllExcept("intValue");
final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
dtoObject.setIntValue(12);
final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, containsString("stringValue")); assertThat(dtoAsString, containsString("stringValue"));
System.out.println(dtoAsString); assertThat(dtoAsString, containsString("booleanValue"));
} }
@Test @Test
public final void givenTypeHasFilterThatIgnoresNegativeInt_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException { public final void givenObjectHasNoAccessorsButHasVisibleFields_whenSerializing_thenNoException() throws JsonParseException, IOException {
final PropertyFilter theFilter = new SimpleBeanPropertyFilter() { final ObjectMapper objectMapper = new ObjectMapper();
@Override final String dtoAsString = objectMapper.writeValueAsString(new MyDtoNoAccessorsAndFieldVisibility());
public final void serializeAsField(final Object pojo, final JsonGenerator jgen, final SerializerProvider provider, final PropertyWriter writer) throws Exception {
if (include(writer)) {
if (!writer.getName().equals("intValue")) {
writer.serializeAsField(pojo, jgen, provider);
return;
}
final int intValue = ((MyDtoWithFilter) pojo).getIntValue(); assertThat(dtoAsString, containsString("intValue"));
if (intValue >= 0) {
writer.serializeAsField(pojo, jgen, provider);
}
} else if (!jgen.canOmitFields()) { // since 2.3
writer.serializeAsOmittedField(pojo, jgen, provider);
}
}
@Override
protected final boolean include(final BeanPropertyWriter writer) {
return true;
}
@Override
protected final boolean include(final PropertyWriter writer) {
return true;
}
};
final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
dtoObject.setIntValue(-1);
final ObjectMapper mapper = new ObjectMapper();
final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, containsString("stringValue")); assertThat(dtoAsString, containsString("stringValue"));
System.out.println(dtoAsString);
}
@Test
public final void givenIgnoringNullFieldsOnClass_whenWritingObjectWithNullField_thenFieldIsIgnored() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
final MyDtoIgnoreNull dtoObject = new MyDtoIgnoreNull();
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("intValue"));
assertThat(dtoAsString, containsString("booleanValue")); assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, not(containsString("stringValue")));
System.out.println(dtoAsString);
}
@Test
public final void givenIgnoringNullFieldsGlobally_whenWritingObjectWithNullField_thenIgnored() throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
mapper.setSerializationInclusion(Include.NON_NULL);
final MyDto dtoObject = new MyDto();
final String dtoAsString = mapper.writeValueAsString(dtoObject);
assertThat(dtoAsString, containsString("intValue"));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, not(containsString("stringValue")));
System.out.println(dtoAsString);
} }
// tests - multiple entities to json // tests - multiple entities to json