package org.codehaus.jackson.jaxb;
import java.util.*;
import javax.xml.bind.annotation.*;
import org.codehaus.jackson.map.BaseMapTest;
import org.codehaus.jackson.map.*;
import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
/**
* Simple unit tests to verify that it is possible to handle
* potentially cyclic structures, as long as object graph itself
* is not cyclic. This is the case for directed hierarchies like
* trees and DAGs.
*/
public class TestCyclicTypes
extends BaseMapTest
{
/*
/**********************************************************
/* Helper bean classes
/**********************************************************
*/
@XmlAccessorType(XmlAccessType.PUBLIC_MEMBER)
static class Bean
{
private Bean _next;
final String _name;
public Bean(Bean next, String name) {
_next = next;
_name = name;
}
public Bean getNext() { return _next; }
public String getName() { return _name; }
public void assignNext(Bean n) { _next = n; }
}
/*
/**********************************************************
/* Types
/**********************************************************
*/
/* Added to check for [JACKSON-171], i.e. that type its being
* cyclic is not a problem (instances are).
*/
public void testWithJAXB() throws Exception
{
ObjectMapper mapper = new ObjectMapper();
mapper.setAnnotationIntrospector(new JaxbAnnotationIntrospector());
Bean bean = new Bean(null, "abx");
Map<String,Object> results = writeAndMap(mapper, bean);
assertEquals(2, results.size());
assertEquals("abx", results.get("name"));
assertTrue(results.containsKey("next"));
assertNull(results.get("next"));
}
}