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package com.fasterxml.jackson.databind.deser.creators;
import java.beans.ConstructorProperties;
import com.fasterxml.jackson.annotation.*;
import com.fasterxml.jackson.databind.*;
public class CreatorPropertiesTest extends BaseMapTest
{
static class Issue905Bean {
// 08-Nov-2015, tatu: Note that in real code we would most likely use same
// names for properties; but here we use different name on purpose to
// ensure that Jackson has no way of binding JSON properties "x" and "y"
// using any other mechanism than via `@ConstructorProperties` annotation
public int _x, _y;
@ConstructorProperties({"x", "y"})
// Same as above; use differing local parameter names so that parameter name
// introspection cannot be used as the source of property names.
public Issue905Bean(int a, int b) {
_x = a;
_y = b;
}
}
// for [databind#1122]
static class Ambiguity {
@JsonProperty("bar")
private int foo;
protected Ambiguity() {}
@ConstructorProperties({ "foo" })
public Ambiguity(int foo) {
this.foo = foo;
}
public int getFoo() {
return foo;
}
@Override
public String toString() {
return "Ambiguity [foo=" + foo + "]";
}
}
// for [databind#1371]
static class Lombok1371Bean {
public int x, y;
protected Lombok1371Bean() { }
@ConstructorProperties({ "x", "y" })
public Lombok1371Bean(int _x, int _y) {
x = _x + 1;
y = _y + 1;
}
}
/*
/**********************************************************
/* Test methods
/**********************************************************
*/
private final ObjectMapper MAPPER = new ObjectMapper();
// [databind#905]
public void testCreatorPropertiesAnnotation() throws Exception
{
Issue905Bean b = MAPPER.readValue(aposToQuotes("{'y':3,'x':2}"),
Issue905Bean.class);
assertEquals(2, b._x);
assertEquals(3, b._y);
}
// [databind#1122]
public void testPossibleNamingConflict() throws Exception
{
String json = "{\"bar\":3}";
Ambiguity amb = MAPPER.readValue(json, Ambiguity.class);
assertNotNull(amb);
assertEquals(3, amb.getFoo());
}
// [databind#1371]: MapperFeature.INFER_CREATOR_FROM_CONSTRUCTOR_PROPERTIES
public void testConstructorPropertiesInference() throws Exception
{
final String JSON = aposToQuotes("{'x':3,'y':5}");
// by default, should detect and use arguments-taking constructor as creator
assertTrue(MAPPER.isEnabled(MapperFeature.INFER_CREATOR_FROM_CONSTRUCTOR_PROPERTIES));
Lombok1371Bean result = MAPPER.readValue(JSON, Lombok1371Bean.class);
assertEquals(4, result.x);
assertEquals(6, result.y);
// but change if configuration changed
ObjectMapper mapper = jsonMapperBuilder()
.disable(MapperFeature.INFER_CREATOR_FROM_CONSTRUCTOR_PROPERTIES)
.build();
// in which case fields are set directly:
result = mapper.readValue(JSON, Lombok1371Bean.class);
assertEquals(3, result.x);
assertEquals(5, result.y);
}
}
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