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jadex.transformation.jsonserializer.processors.JsonBeanProcessor Maven / Gradle / Ivy
package jadex.transformation.jsonserializer.processors;
import java.lang.reflect.Constructor;
import java.lang.reflect.Type;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import com.eclipsesource.json.JsonObject;
import com.eclipsesource.json.JsonValue;
import jadex.common.SAccess;
import jadex.common.SReflect;
import jadex.common.SUtil;
import jadex.common.transformation.BeanIntrospectorFactory;
import jadex.common.transformation.IStringConverter;
import jadex.common.transformation.traverser.BeanProperty;
import jadex.common.transformation.traverser.IBeanIntrospector;
import jadex.common.transformation.traverser.ITraverseProcessor;
import jadex.common.transformation.traverser.Traverser;
import jadex.common.transformation.traverser.Traverser.MODE;
import jadex.transformation.jsonserializer.JsonTraverser;
/**
* Bean processor for reading json objects.
*/
public class JsonBeanProcessor extends AbstractJsonProcessor
{
/** Bean introspector for inspecting beans. */
protected IBeanIntrospector intro = BeanIntrospectorFactory.get().getBeanIntrospector(5000);
/**
* Test if the processor is applicable.
* @param object The object.
* @param targetcl If not null, the traverser should make sure that the result object is compatible with the class loader,
* e.g. by cloning the object using the class loaded from the target class loader.
* @return True, if is applicable.
*/
protected boolean isApplicable(Object object, Type type, ClassLoader targetcl, JsonReadContext context)
{
Class clazz = SReflect.getClass(type);
return object instanceof JsonObject && (clazz!=null && !SReflect.isSupertype(Map.class, clazz));
}
/**
* Test if the processor is applicable.
* @param object The object.
* @param targetcl If not null, the traverser should make sure that the result object is compatible with the class loader,
* e.g. by cloning the object using the class loaded from the target class loader.
* @return True, if is applicable.
*/
protected boolean isApplicable(Object object, Type type, ClassLoader targetcl, JsonWriteContext context)
{
return true;
}
/**
* Process an object.
* @param object The object.
* @param targetcl If not null, the traverser should make sure that the result object is compatible with the class loader,
* e.g. by cloning the object using the class loaded from the target class loader.
* @return The processed object.
*/
protected Object readObject(Object object, Type type, Traverser traverser, List conversionprocessors, List processors, IStringConverter converter, MODE mode, ClassLoader targetcl, JsonReadContext context)
{
Object ret = null;
Class clazz = SReflect.getClass(type);
ret = getReturnObject(object, clazz, targetcl);
// traversed.put(object, ret);
JsonValue idx = (JsonValue)((JsonObject)object).get(JsonTraverser.ID_MARKER);
if(idx!=null)
((JsonReadContext)context).addKnownObject(ret, idx.asInt());
try
{
readProperties(object, clazz, conversionprocessors, processors, converter, mode, traverser, targetcl, ret, context, intro);
}
catch(Exception e)
{
throw SUtil.throwUnchecked(e);
}
return ret;
}
/**
* Process an object.
* @param object The object.
* @param targetcl If not null, the traverser should make sure that the result object is compatible with the class loader,
* e.g. by cloning the object using the class loaded from the target class loader.
* @return The processed object.
*/
protected Object writeObject(Object object, Type type, Traverser traverser, List conversionprocessors, List processors, IStringConverter converter, MODE mode, ClassLoader targetcl, JsonWriteContext wr)
{
// System.out.println("fp: "+object);
wr.addObject(wr.getCurrentInputObject());
wr.write("{");
if(wr.isWriteClass())
{
wr.writeClass(object.getClass());
if(wr.isWriteId())
{
wr.write(",").writeId();
}
// wr.write(",");
}
else if(wr.isWriteId())
{
wr.writeId();
// wr.write(",");
}
try
{
// System.out.println("cloned: "+object.getClass());
// ret = object.getClass().newInstance();
writeProperties(object, conversionprocessors, processors, converter, mode, traverser, targetcl, wr, intro, !wr.isWriteClass() && !wr.isWriteId());
}
catch(Exception e)
{
throw SUtil.throwUnchecked(e);
}
wr.write("}");
return object;
}
/**
* Clone all properties of an object.
*/
protected static void readProperties(Object object, Type type, List postprocessors, List processors, IStringConverter converter, MODE mode, Traverser traverser, ClassLoader targetcl, Object ret, JsonReadContext context, IBeanIntrospector intro)
{
// Get all declared fields (public, protected and private)
JsonObject jval = (JsonObject)object;
Class clazz = SReflect.getClass(type);
Map props = intro.getBeanProperties(clazz, true, false);
for(String name: jval.names())
{
try
{
BeanProperty prop = (BeanProperty)props.get(name);
if(prop!=null && prop.isReadable() && prop.isWritable())
{
JsonValue val = jval.get(name);
if(val!=null && !val.isNull())
{
Type sot = null;
if(val instanceof JsonObject)
sot = JsonTraverser.findClazzOfJsonObject((JsonObject)val, targetcl);
if(sot==null)
sot = prop.getGenericType();
// System.out.println("VAL " + ((JsonObject) val).toString());
// System.out.println("CL " + ((JsonObject) val).getString(JsonTraverser.CLASSNAME_MARKER, null));
// System.out.println("SOT: " +sot);
Object newval = traverser.doTraverse(val, sot, postprocessors, processors, converter, mode, targetcl, context);
// Object newval = traverser.doTraverse(val, sot, rsionprocessors, postprocessors, mode, targetcl, context)
// Object newval = traverser.doTraverse(val, sot, cloned, null, processors, postprocessors, clone, targetcl, context);
if(newval != Traverser.IGNORE_RESULT && (object!=ret || val!=newval))
{
// if ("result".equals(prop.getName()))
// System.out.println("PROP SET CALLED");
prop.setPropertyValue(ret, traverser.convertBasicType(converter, newval, prop.getType(), targetcl, context));
//prop.setPropertyValue(ret, convertBasicType(newval, prop.getType()));
}
}
}
}
catch(Exception e)
{
throw SUtil.throwUnchecked(e);
}
}
}
/**
* Clone all properties of an object.
*/
protected void writeProperties(Object object, List conversionprocessors, List processors, IStringConverter converter, MODE mode, Traverser traverser,
ClassLoader targetcl, JsonWriteContext wr, IBeanIntrospector intro, boolean first)
{
Class clazz = object.getClass();
Map props = intro.getBeanProperties(clazz, true, false);
for(Iterator it=props.keySet().iterator(); it.hasNext(); )
{
try
{
String name = (String)it.next();
if(!wr.isPropertyExcluded(clazz, name))
{
BeanProperty prop = (BeanProperty)props.get(name);
if(prop.isReadable() && prop.isWritable())
{
Object val = prop.getPropertyValue(object);
// if (val != null && val.getClass().toString().contains("jadex.bridge.ComponentIdentifier"))
// System.out.println("Contains addresses: " + object.getClass() + " " + object);
if(val!=null)
{
if(!first)
wr.write(",");
first = false;
wr.writeString(name);
wr.write(":");
traverser.doTraverse(val, prop.getType(), conversionprocessors, processors, converter, mode, targetcl, wr);
}
}
}
}
catch(Exception e)
{
throw SUtil.throwUnchecked(e);
}
}
}
/**
* Get the object that is returned.
*/
public Object getReturnObject(Object object, Class clazz, ClassLoader targetcl)
{
Object ret = null;
if(targetcl!=null)
clazz = SReflect.classForName0(clazz.getName(), targetcl);
Constructor c;
try
{
c = clazz.getConstructor(new Class[0]);
}
catch(NoSuchMethodException nsme)
{
c = clazz.getDeclaredConstructors()[0];
}
try
{
SAccess.setAccessible(c, true);
Class[] paramtypes = c.getParameterTypes();
Object[] paramvalues = new Object[paramtypes.length];
for(int i=0; i
