mapping work
This commit is contained in:
parent
8118dd3c65
commit
aa0030d546
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@ -2,9 +2,9 @@ package dtos;
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public class MyDtoNoAccessors {
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private String stringValue;
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private int intValue;
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private boolean booleanValue;
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String stringValue;
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int intValue;
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boolean booleanValue;
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public MyDtoNoAccessors() {
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super();
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@ -0,0 +1,25 @@
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package dtos;
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import com.fasterxml.jackson.annotation.JsonAutoDetect;
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import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
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@JsonAutoDetect(fieldVisibility = Visibility.ANY)
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public class MyDtoNoAccessorsAndFieldVisibility {
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String stringValue;
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int intValue;
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boolean booleanValue;
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public MyDtoNoAccessorsAndFieldVisibility() {
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super();
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}
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public MyDtoNoAccessorsAndFieldVisibility(final String stringValue, final int intValue, final boolean booleanValue) {
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super();
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this.stringValue = stringValue;
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this.intValue = intValue;
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this.booleanValue = booleanValue;
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}
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}
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@ -0,0 +1,187 @@
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package org.baeldung.jackson.test;
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import static org.hamcrest.Matchers.containsString;
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import static org.hamcrest.Matchers.not;
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import static org.junit.Assert.assertThat;
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import java.io.IOException;
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import org.junit.Test;
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import com.fasterxml.jackson.annotation.JsonInclude.Include;
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import com.fasterxml.jackson.core.JsonGenerator;
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import com.fasterxml.jackson.core.JsonParseException;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.SerializerProvider;
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import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
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import com.fasterxml.jackson.databind.ser.FilterProvider;
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import com.fasterxml.jackson.databind.ser.PropertyFilter;
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import com.fasterxml.jackson.databind.ser.PropertyWriter;
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import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
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import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
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import dtos.MyDto;
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import dtos.MyDtoIgnoreField;
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import dtos.MyDtoIgnoreFieldByName;
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import dtos.MyDtoIgnoreNull;
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import dtos.MyDtoIncludeNonDefault;
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import dtos.MyDtoWithFilter;
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import dtos.MyMixInForString;
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public class JacksonSerializationIgnoreUnitTest {
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// tests - single entity to json
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// ignore
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@Test
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public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasOnlyDefaultValues_whenSerializing_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final String dtoAsString = mapper.writeValueAsString(new MyDtoIncludeNonDefault());
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assertThat(dtoAsString, not(containsString("intValue")));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasNonDefaultValue_whenSerializing_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIncludeNonDefault dtoObject = new MyDtoIncludeNonDefault();
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dtoObject.setBooleanValue(true);
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, containsString("booleanValue"));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenFieldIsIgnoredByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIgnoreFieldByName dtoObject = new MyDtoIgnoreFieldByName();
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dtoObject.setBooleanValue(true);
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenFieldIsIgnoredDirectly_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIgnoreField dtoObject = new MyDtoIgnoreField();
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenFieldTypeIsIgnored_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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mapper.addMixInAnnotations(String.class, MyMixInForString.class);
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final MyDto dtoObject = new MyDto();
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dtoObject.setBooleanValue(true);
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, not(containsString("stringValue")));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenTypeHasFilterThatIgnoresFieldByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final SimpleBeanPropertyFilter theFilter = SimpleBeanPropertyFilter.serializeAllExcept("intValue");
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final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
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final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
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dtoObject.setIntValue(12);
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final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, containsString("stringValue"));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenTypeHasFilterThatIgnoresNegativeInt_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final PropertyFilter theFilter = new SimpleBeanPropertyFilter() {
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@Override
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public final void serializeAsField(final Object pojo, final JsonGenerator jgen, final SerializerProvider provider, final PropertyWriter writer) throws Exception {
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if (include(writer)) {
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if (!writer.getName().equals("intValue")) {
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writer.serializeAsField(pojo, jgen, provider);
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return;
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}
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final int intValue = ((MyDtoWithFilter) pojo).getIntValue();
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if (intValue >= 0) {
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writer.serializeAsField(pojo, jgen, provider);
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}
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} else if (!jgen.canOmitFields()) { // since 2.3
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writer.serializeAsOmittedField(pojo, jgen, provider);
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}
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}
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@Override
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protected final boolean include(final BeanPropertyWriter writer) {
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return true;
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}
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@Override
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protected final boolean include(final PropertyWriter writer) {
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return true;
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}
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};
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final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
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final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
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dtoObject.setIntValue(-1);
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final ObjectMapper mapper = new ObjectMapper();
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final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, containsString("stringValue"));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenIgnoringNullFieldsOnClass_whenWritingObjectWithNullField_thenFieldIsIgnored() throws JsonProcessingException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIgnoreNull dtoObject = new MyDtoIgnoreNull();
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, not(containsString("stringValue")));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenIgnoringNullFieldsGlobally_whenWritingObjectWithNullField_thenIgnored() throws JsonProcessingException {
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final ObjectMapper mapper = new ObjectMapper();
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mapper.setSerializationInclusion(Include.NON_NULL);
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final MyDto dtoObject = new MyDto();
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, not(containsString("stringValue")));
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System.out.println(dtoAsString);
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}
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}
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@ -2,6 +2,7 @@ package org.baeldung.jackson.test;
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import static org.hamcrest.Matchers.containsString;
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import static org.hamcrest.Matchers.not;
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import static org.hamcrest.Matchers.notNullValue;
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import static org.junit.Assert.assertThat;
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import java.io.IOException;
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@ -9,52 +10,30 @@ import java.util.List;
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import org.junit.Test;
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import com.fasterxml.jackson.annotation.JsonInclude.Include;
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import com.fasterxml.jackson.core.JsonGenerator;
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import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
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import com.fasterxml.jackson.annotation.PropertyAccessor;
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import com.fasterxml.jackson.core.JsonParseException;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.JsonMappingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.SerializerProvider;
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import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
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import com.fasterxml.jackson.databind.ser.FilterProvider;
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import com.fasterxml.jackson.databind.ser.PropertyFilter;
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import com.fasterxml.jackson.databind.ser.PropertyWriter;
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import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
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import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
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import com.google.common.collect.Lists;
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import dtos.MyDto;
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import dtos.MyDtoFieldNameChanged;
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import dtos.MyDtoIgnoreField;
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import dtos.MyDtoIgnoreFieldByName;
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import dtos.MyDtoIgnoreNull;
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import dtos.MyDtoIncludeNonDefault;
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import dtos.MyDtoWithFilter;
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import dtos.MyMixInForString;
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import dtos.MyDtoNoAccessors;
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import dtos.MyDtoNoAccessorsAndFieldVisibility;
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public class JacksonSerializationUnitTest {
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// tests - single entity to json
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@Test
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public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasOnlyDefaultValues_whenSerializing_thenCorrect() throws JsonParseException, IOException {
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public final void whenSerializing_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final String dtoAsString = mapper.writeValueAsString(new MyDtoIncludeNonDefault());
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assertThat(dtoAsString, not(containsString("intValue")));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenOnlyNonDefaultValuesAreSerializedAndDtoHasNonDefaultValue_whenSerializing_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIncludeNonDefault dtoObject = new MyDtoIncludeNonDefault();
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dtoObject.setBooleanValue(true);
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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final String dtoAsString = mapper.writeValueAsString(new MyDto());
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("stringValue"));
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assertThat(dtoAsString, containsString("booleanValue"));
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System.out.println(dtoAsString);
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}
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@Test
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@ -70,134 +49,32 @@ public class JacksonSerializationUnitTest {
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System.out.println(dtoAsString);
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}
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// ignore
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@Test(expected = JsonMappingException.class)
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public final void givenObjectHasNoAccessors_whenSerializing_thenException() throws JsonParseException, IOException {
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final String dtoAsString = new ObjectMapper().writeValueAsString(new MyDtoNoAccessors());
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@Test
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public final void givenFieldIsIgnoredByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIgnoreFieldByName dtoObject = new MyDtoIgnoreFieldByName();
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dtoObject.setBooleanValue(true);
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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System.out.println(dtoAsString);
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assertThat(dtoAsString, notNullValue());
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}
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@Test
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public final void givenFieldIsIgnoredDirectly_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIgnoreField dtoObject = new MyDtoIgnoreField();
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenFieldTypeIsIgnored_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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mapper.addMixInAnnotations(String.class, MyMixInForString.class);
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final MyDto dtoObject = new MyDto();
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dtoObject.setBooleanValue(true);
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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public final void givenObjectHasNoAccessors_whenSerializingWithPrivateFieldsVisibility_thenNoException() throws JsonParseException, IOException {
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final ObjectMapper objectMapper = new ObjectMapper();
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objectMapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
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final String dtoAsString = objectMapper.writeValueAsString(new MyDtoNoAccessors());
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, not(containsString("stringValue")));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenTypeHasFilterThatIgnoresFieldByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final ObjectMapper mapper = new ObjectMapper();
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final SimpleBeanPropertyFilter theFilter = SimpleBeanPropertyFilter.serializeAllExcept("intValue");
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final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
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final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
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dtoObject.setIntValue(12);
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final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, containsString("stringValue"));
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System.out.println(dtoAsString);
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assertThat(dtoAsString, containsString("booleanValue"));
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}
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@Test
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public final void givenTypeHasFilterThatIgnoresNegativeInt_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
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final PropertyFilter theFilter = new SimpleBeanPropertyFilter() {
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@Override
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public final void serializeAsField(final Object pojo, final JsonGenerator jgen, final SerializerProvider provider, final PropertyWriter writer) throws Exception {
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if (include(writer)) {
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if (!writer.getName().equals("intValue")) {
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writer.serializeAsField(pojo, jgen, provider);
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return;
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}
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public final void givenObjectHasNoAccessorsButHasVisibleFields_whenSerializing_thenNoException() throws JsonParseException, IOException {
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final ObjectMapper objectMapper = new ObjectMapper();
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final String dtoAsString = objectMapper.writeValueAsString(new MyDtoNoAccessorsAndFieldVisibility());
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final int intValue = ((MyDtoWithFilter) pojo).getIntValue();
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if (intValue >= 0) {
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writer.serializeAsField(pojo, jgen, provider);
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}
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} else if (!jgen.canOmitFields()) { // since 2.3
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writer.serializeAsOmittedField(pojo, jgen, provider);
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}
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}
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@Override
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protected final boolean include(final BeanPropertyWriter writer) {
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return true;
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}
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@Override
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protected final boolean include(final PropertyWriter writer) {
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return true;
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}
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};
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final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
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final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
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dtoObject.setIntValue(-1);
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final ObjectMapper mapper = new ObjectMapper();
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final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
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assertThat(dtoAsString, not(containsString("intValue")));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("stringValue"));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenIgnoringNullFieldsOnClass_whenWritingObjectWithNullField_thenFieldIsIgnored() throws JsonProcessingException {
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final ObjectMapper mapper = new ObjectMapper();
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final MyDtoIgnoreNull dtoObject = new MyDtoIgnoreNull();
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, not(containsString("stringValue")));
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System.out.println(dtoAsString);
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}
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@Test
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public final void givenIgnoringNullFieldsGlobally_whenWritingObjectWithNullField_thenIgnored() throws JsonProcessingException {
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final ObjectMapper mapper = new ObjectMapper();
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mapper.setSerializationInclusion(Include.NON_NULL);
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final MyDto dtoObject = new MyDto();
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final String dtoAsString = mapper.writeValueAsString(dtoObject);
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assertThat(dtoAsString, containsString("intValue"));
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assertThat(dtoAsString, containsString("booleanValue"));
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assertThat(dtoAsString, not(containsString("stringValue")));
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System.out.println(dtoAsString);
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}
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// tests - multiple entities to json
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