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Added KeyDeserializer class and test code (#1523)

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* Solr w Apache SolrJ

* Solr w Apache SolrJ

* updated test names and moved add to @before method

* create apache-solrj module, moved code from spring-data-solr

* More examples for indexing,delete,and query for solrj

* More examples for indexing,delete,and query for solrj

* Jackson Map Serialize/Deserialize

* Jackson Map Serialize/Deserialize

* Jackson version update

* keydeserializer code added

* keydeserializer code added
This commit is contained in:
Nancy Bosecker 2017-03-28 18:18:00 -07:00 committed by KevinGilmore
parent 6fe778979a
commit 361df07694
3 changed files with 51 additions and 1 deletions
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24
jackson/src/main/java/com/baeldung/jackson/entities/ClassWithAMap.java Normal file
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@ -0,0 +1,24 @@
package com.baeldung.jackson.entities;
import java.util.Map;
import com.baeldung.jackson.serialization.MyPairDeserializer;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
public class ClassWithAMap {
@JsonProperty("map")
@JsonDeserialize(keyUsing = MyPairDeserializer.class)
private final Map<MyPair, String> map;
@JsonCreator
public ClassWithAMap(Map<MyPair, String> map) {
this.map = map;
}
public Map<MyPair, String> getMap() {
return map;
}
}

18
jackson/src/main/java/com/baeldung/jackson/serialization/MyPairDeserializer.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.jackson.serialization;
import java.io.IOException;
import com.baeldung.jackson.entities.MyPair;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.KeyDeserializer;
public class MyPairDeserializer extends KeyDeserializer {
@Override
public MyPair deserializeKey(String key, DeserializationContext ctxt)
throws IOException, JsonProcessingException {
return new MyPair(key);
}
}

10
jackson/src/test/java/com/baeldung/jackson/deserialization/JacksonMapDeserializeTest.java
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@ -7,6 +7,7 @@ import java.util.Map;
import org.junit.Assert;
import org.junit.Test;
import com.baeldung.jackson.entities.ClassWithAMap;
import com.baeldung.jackson.entities.MyPair;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.type.TypeReference;
@ -36,14 +37,21 @@ public class JacksonMapDeserializeTest {
public void whenObjectStringMapDeserialize_thenCorrect()
throws JsonParseException, JsonMappingException, IOException {
final String jsonInput = "{\"Abbott and Costello\" : \"Comedy\"}";
final String jsonInput = "{\"Abbott and Costello\":\"Comedy\"}";
final ObjectMapper mapper = new ObjectMapper();
TypeReference<HashMap<MyPair, String>> typeRef = new TypeReference<HashMap<MyPair, String>>() {
};
map = mapper.readValue(jsonInput, typeRef);
Assert.assertEquals("Comedy", map.get(new MyPair("Abbott", "Costello")));
ClassWithAMap classWithMap = mapper.readValue(jsonInput,
ClassWithAMap.class);
Assert.assertEquals("Comedy",
classWithMap.getMap().get(new MyPair("Abbott", "Costello")));
}
@Test