com.silentgo.json.deserializer.DeserializerKit Maven / Gradle / Ivy
package com.silentgo.json.deserializer;
import com.silentgo.json.exception.DeserializerException;
import com.silentgo.json.mapping.getter.ValueGetKit;
import com.silentgo.json.mapping.getter.ValueGetter;
import com.silentgo.json.model.JSONEntity;
import com.silentgo.utils.ClassKit;
import com.silentgo.utils.ReflectKit;
import com.silentgo.utils.reflect.SGClass;
import com.silentgo.utils.reflect.SGField;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
/**
* Project : json
* Package : com.silentgo.json.deserializer
*
* @author teddyzhu
*
* Created by teddyzhu on 2017/1/11.
*/
public class DeserializerKit {
private static final Map, Deserializer> typeDeserializer = new HashMap<>();
public static final Deserializer defaultDeserializer = new DefaultDeserializer();
private static final Deserializer defaultArrayDeserializer = new ArrayDeserializer(DeserializerKit.defaultDeserializer);
private static final Deserializer defaultCollectionDeserializer = new CollectionDeserializer(DeserializerKit.defaultDeserializer);
private static final Deserializer defaultMapDeserializer = new MapDeserializer(DeserializerKit.defaultDeserializer);
static {
ValueGetKit.getValueGetterMap().forEach(((aClass, valueGetter) -> typeDeserializer.put(aClass, new ValueGetterDeserializer(valueGetter))));
}
public static Deserializer createDeserializer(Class tClass) {
return createDeserializer(tClass, null);
}
public static Deserializer createDeserializer(Class tClass, SGField sgField) {
if (typeDeserializer.containsKey(tClass)) return typeDeserializer.get(tClass);
if (tClass.isArray()) {
Class type = tClass.getComponentType();
return Object.class.equals(type) ? defaultArrayDeserializer : createDeserializer(type, null);
} else if (Map.class.isAssignableFrom(tClass)) {
Class target = Object.class;
if (sgField != null) {
Type type = sgField.getField().getGenericType();
target = ClassKit.getActualType(type, 1);
}
return Object.class.equals(target) ? defaultMapDeserializer : new MapDeserializer(createDeserializer(target, null));
} else if (Collection.class.isAssignableFrom(tClass)) {
Class target = Object.class;
if (sgField != null) {
Type type = sgField.getField().getGenericType();
target = ClassKit.getActualType(type);
}
return Object.class.equals(target) ? defaultCollectionDeserializer : new CollectionDeserializer(createDeserializer(target, null));
} else if (Object.class.equals(tClass) || JSONEntity.class.isAssignableFrom(tClass)) {
return DeserializerKit.defaultDeserializer;
} else {
ValueGetter valueGetter = ValueGetKit.getValueGetter(tClass);
if (valueGetter == null) {
if (tClass.getClassLoader() == null)
throw new DeserializerException("do not support the type " + tClass.getName() + " ,please implement ValueGetter");
} else {
Deserializer deserializer = sgField == null ? typeDeserializer.get(tClass) : new ValueGetterDeserializer(valueGetter);
typeDeserializer.put(tClass, deserializer);
return deserializer;
}
//only java bean should be created
SGClass sgClass = ReflectKit.getSGClass(tClass);
JavaBeanDeserializer deserializer1 = new JavaBeanDeserializer(sgClass);
sgClass.getFieldMap().forEach((k, v) -> {
Deserializer deserializer2 = createDeserializer(v.getType(), v);
deserializer1.addDeserializer(k, deserializer2);
});
typeDeserializer.put(tClass, deserializer1);
return deserializer1;
}
}
}