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dfloreydflorey
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Refund added
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‎src/main/java/de/paymill/net/GsonAdapter.java

+197-197
Original file line numberDiff line numberDiff line change
@@ -1,197 +1,197 @@
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package de.paymill.net;
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import java.io.IOException;
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import java.lang.reflect.Type;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Locale;
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import java.util.Map;
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import com.google.gson.FieldNamingPolicy;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.JsonArray;
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import com.google.gson.JsonDeserializationContext;
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import com.google.gson.JsonDeserializer;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParseException;
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import com.google.gson.JsonPrimitive;
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import com.google.gson.JsonSerializationContext;
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import com.google.gson.JsonSerializer;
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import com.google.gson.TypeAdapter;
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import com.google.gson.TypeAdapterFactory;
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import com.google.gson.reflect.TypeToken;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonToken;
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import com.google.gson.stream.JsonWriter;
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import de.paymill.PaymillException;
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import de.paymill.model.Client;
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import de.paymill.model.IPaymillObject;
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import de.paymill.model.Offer;
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import de.paymill.model.Payment;
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import de.paymill.model.Refund;
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import de.paymill.model.Subscription;
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import de.paymill.model.Transaction;
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/**
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* Base class for gson encoder/decoder.
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*/
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public class GsonAdapter {
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/**
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* Construct a gson instance and add custom serializers/deserializers.
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*
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* @return
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*/
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protected Gson createGson() {
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JsonSerializer<Date> serializer = new JsonSerializer<Date>() {
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@Override
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public JsonElement serialize(Date src, Type type,
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JsonSerializationContext context) {
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return src == null ? null : new JsonPrimitive(
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(int) (src.getTime() / 1000));
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}
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};
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JsonDeserializer<Date> deserializer = new JsonDeserializer<Date>() {
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@Override
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public Date deserialize(JsonElement json, Type type,
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JsonDeserializationContext context)
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throws JsonParseException {
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return json == null ? null : new Date(json.getAsInt() * 1000);
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}
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};
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TypeAdapterFactory enumFactory = new TypeAdapterFactory() {
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public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
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@SuppressWarnings("unchecked")
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Class<T> rawType = (Class<T>) type.getRawType();
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if (!rawType.isEnum()) {
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return null;
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}
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final Map<String, T> lowercaseToConstant = new HashMap<String, T>();
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for (T constant : rawType.getEnumConstants()) {
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lowercaseToConstant.put(toLowercase(constant), constant);
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}
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return new TypeAdapter<T>() {
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public void write(JsonWriter out, T value)
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throws IOException {
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if (value == null) {
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out.nullValue();
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} else {
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out.value(toLowercase(value));
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}
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}
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public T read(JsonReader reader) throws IOException {
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if (reader.peek() == JsonToken.NULL) {
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reader.nextNull();
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return null;
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} else {
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return lowercaseToConstant.get(reader.nextString());
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}
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}
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};
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}
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private String toLowercase(Object o) {
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String normalized = o.toString().toLowerCase(Locale.US);
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return normalized.replace('_', '.');
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}
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};
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return new GsonBuilder()
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.registerTypeAdapter(Date.class, serializer)
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.registerTypeAdapter(Date.class, deserializer)
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.registerTypeAdapter(Client.class, new PaymillObjectDeserializer(Client.class, Client0.class))
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.registerTypeAdapter(Offer.class, new PaymillObjectDeserializer(Offer.class, Offer0.class))
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.registerTypeAdapter(Payment.class, new PaymillObjectDeserializer(Payment.class, Payment0.class))
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.registerTypeAdapter(Refund.class, new PaymillObjectDeserializer(Refund.class, Refund0.class))
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.registerTypeAdapter(Subscription.class, new SubscriptionDeserializer())
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.registerTypeAdapter(Transaction.class, new PaymillObjectDeserializer(Transaction.class, Transaction0.class))
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.registerTypeAdapterFactory(enumFactory)
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.setFieldNamingPolicy(
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FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES).create();
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}
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private static class SubscriptionDeserializer implements
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JsonDeserializer<IPaymillObject> {
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@Override
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public IPaymillObject deserialize(JsonElement json, Type type,
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JsonDeserializationContext context) throws JsonParseException {
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if (json == null) {
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return null;
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}
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if (json.isJsonObject()) {
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JsonObject jsonObject = json.getAsJsonObject();
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JsonElement offerElement = jsonObject.get("offer");
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if (offerElement != null && offerElement.isJsonArray()) {
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JsonArray jsonArray = offerElement.getAsJsonArray();
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if (jsonArray.size() == 0) {
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jsonObject.remove("offer");
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} else {
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throw new IllegalArgumentException(
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"Received non empty offer array " + jsonArray);
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}
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}
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return context.deserialize(json, Subscription0.class);
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}
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try {
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String id = json.getAsString();
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IPaymillObject instance = new Subscription();
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instance.setId(id);
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return instance;
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} catch (Exception e) {
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throw new PaymillException("Error instantiating subscription ",
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e);
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}
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}
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}
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class PaymillObjectDeserializer implements JsonDeserializer<IPaymillObject> {
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private Class<?> targetClass;
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private Class<?> dummyClass;
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public PaymillObjectDeserializer(Class<?> targetClass,
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Class<?> dummyClass) {
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this.targetClass = targetClass;
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this.dummyClass = dummyClass;
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}
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@Override
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public IPaymillObject deserialize(JsonElement json, Type type,
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JsonDeserializationContext context) throws JsonParseException {
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if (json == null) {
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return null;
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}
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if (json.isJsonObject()) {
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return context.deserialize(json, dummyClass);
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}
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try {
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String id = json.getAsString();
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IPaymillObject instance = (IPaymillObject)targetClass.newInstance();
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instance.setId(id);
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return instance;
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} catch (Exception e) {
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throw new PaymillException("Error instantiating " + targetClass, e);
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}
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}
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};
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public static class Client0 extends Client {}
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public static class Offer0 extends Offer {}
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public static class Payment0 extends Payment {}
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public static class Refund0 extends Refund {}
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public static class Subscription0 extends Subscription {}
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public static class Transaction0 extends Transaction {}
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}
1+
package de.paymill.net;
2+
3+
import java.io.IOException;
4+
import java.lang.reflect.Type;
5+
import java.util.Date;
6+
import java.util.HashMap;
7+
import java.util.Locale;
8+
import java.util.Map;
9+
10+
import com.google.gson.FieldNamingPolicy;
11+
import com.google.gson.Gson;
12+
import com.google.gson.GsonBuilder;
13+
import com.google.gson.JsonArray;
14+
import com.google.gson.JsonDeserializationContext;
15+
import com.google.gson.JsonDeserializer;
16+
import com.google.gson.JsonElement;
17+
import com.google.gson.JsonObject;
18+
import com.google.gson.JsonParseException;
19+
import com.google.gson.JsonPrimitive;
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import com.google.gson.JsonSerializationContext;
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import com.google.gson.JsonSerializer;
22+
import com.google.gson.TypeAdapter;
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import com.google.gson.TypeAdapterFactory;
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import com.google.gson.reflect.TypeToken;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonToken;
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import com.google.gson.stream.JsonWriter;
28+
29+
import de.paymill.PaymillException;
30+
import de.paymill.model.Client;
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import de.paymill.model.IPaymillObject;
32+
import de.paymill.model.Offer;
33+
import de.paymill.model.Payment;
34+
import de.paymill.model.Refund;
35+
import de.paymill.model.Subscription;
36+
import de.paymill.model.Transaction;
37+
38+
/**
39+
* Base class for gson encoder/decoder.
40+
*/
41+
public class GsonAdapter {
42+
43+
/**
44+
* Construct a gson instance and add custom serializers/deserializers.
45+
*
46+
* @return
47+
*/
48+
protected Gson createGson() {
49+
JsonSerializer<Date> serializer = new JsonSerializer<Date>() {
50+
@Override
51+
public JsonElement serialize(Date src, Type type,
52+
JsonSerializationContext context) {
53+
return src == null ? null : new JsonPrimitive(
54+
(int) (src.getTime() / 1000));
55+
}
56+
};
57+
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JsonDeserializer<Date> deserializer = new JsonDeserializer<Date>() {
59+
@Override
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public Date deserialize(JsonElement json, Type type,
61+
JsonDeserializationContext context)
62+
throws JsonParseException {
63+
return json == null ? null : new Date(json.getAsLong() * 1000L);
64+
}
65+
};
66+
67+
TypeAdapterFactory enumFactory = new TypeAdapterFactory() {
68+
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
69+
@SuppressWarnings("unchecked")
70+
Class<T> rawType = (Class<T>) type.getRawType();
71+
if (!rawType.isEnum()) {
72+
return null;
73+
}
74+
75+
final Map<String, T> lowercaseToConstant = new HashMap<String, T>();
76+
for (T constant : rawType.getEnumConstants()) {
77+
lowercaseToConstant.put(toLowercase(constant), constant);
78+
}
79+
80+
return new TypeAdapter<T>() {
81+
public void write(JsonWriter out, T value)
82+
throws IOException {
83+
if (value == null) {
84+
out.nullValue();
85+
} else {
86+
out.value(toLowercase(value));
87+
}
88+
}
89+
90+
public T read(JsonReader reader) throws IOException {
91+
if (reader.peek() == JsonToken.NULL) {
92+
reader.nextNull();
93+
return null;
94+
} else {
95+
return lowercaseToConstant.get(reader.nextString());
96+
}
97+
}
98+
};
99+
}
100+
101+
private String toLowercase(Object o) {
102+
String normalized = o.toString().toLowerCase(Locale.US);
103+
return normalized.replace('_', '.');
104+
}
105+
};
106+
107+
return new GsonBuilder()
108+
.registerTypeAdapter(Date.class, serializer)
109+
.registerTypeAdapter(Date.class, deserializer)
110+
.registerTypeAdapter(Client.class, new PaymillObjectDeserializer(Client.class, Client0.class))
111+
.registerTypeAdapter(Offer.class, new PaymillObjectDeserializer(Offer.class, Offer0.class))
112+
.registerTypeAdapter(Payment.class, new PaymillObjectDeserializer(Payment.class, Payment0.class))
113+
.registerTypeAdapter(Refund.class, new PaymillObjectDeserializer(Refund.class, Refund0.class))
114+
.registerTypeAdapter(Subscription.class, new SubscriptionDeserializer())
115+
.registerTypeAdapter(Transaction.class, new PaymillObjectDeserializer(Transaction.class, Transaction0.class))
116+
.registerTypeAdapterFactory(enumFactory)
117+
.setFieldNamingPolicy(
118+
FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES).create();
119+
}
120+
121+
private static class SubscriptionDeserializer implements
122+
JsonDeserializer<IPaymillObject> {
123+
124+
@Override
125+
public IPaymillObject deserialize(JsonElement json, Type type,
126+
JsonDeserializationContext context) throws JsonParseException {
127+
if (json == null) {
128+
return null;
129+
}
130+
131+
if (json.isJsonObject()) {
132+
JsonObject jsonObject = json.getAsJsonObject();
133+
JsonElement offerElement = jsonObject.get("offer");
134+
if (offerElement != null && offerElement.isJsonArray()) {
135+
JsonArray jsonArray = offerElement.getAsJsonArray();
136+
if (jsonArray.size() == 0) {
137+
jsonObject.remove("offer");
138+
} else {
139+
throw new IllegalArgumentException(
140+
"Received non empty offer array " + jsonArray);
141+
}
142+
}
143+
144+
return context.deserialize(json, Subscription0.class);
145+
}
146+
try {
147+
String id = json.getAsString();
148+
IPaymillObject instance = new Subscription();
149+
instance.setId(id);
150+
return instance;
151+
} catch (Exception e) {
152+
throw new PaymillException("Error instantiating subscription ",
153+
e);
154+
}
155+
}
156+
}
157+
158+
class PaymillObjectDeserializer implements JsonDeserializer<IPaymillObject> {
159+
160+
private Class<?> targetClass;
161+
private Class<?> dummyClass;
162+
163+
public PaymillObjectDeserializer(Class<?> targetClass,
164+
Class<?> dummyClass) {
165+
this.targetClass = targetClass;
166+
this.dummyClass = dummyClass;
167+
}
168+
169+
@Override
170+
public IPaymillObject deserialize(JsonElement json, Type type,
171+
JsonDeserializationContext context) throws JsonParseException {
172+
if (json == null) {
173+
return null;
174+
}
175+
176+
if (json.isJsonObject()) {
177+
return context.deserialize(json, dummyClass);
178+
}
179+
180+
try {
181+
String id = json.getAsString();
182+
IPaymillObject instance = (IPaymillObject)targetClass.newInstance();
183+
instance.setId(id);
184+
return instance;
185+
} catch (Exception e) {
186+
throw new PaymillException("Error instantiating " + targetClass, e);
187+
}
188+
}
189+
};
190+
191+
public static class Client0 extends Client {}
192+
public static class Offer0 extends Offer {}
193+
public static class Payment0 extends Payment {}
194+
public static class Refund0 extends Refund {}
195+
public static class Subscription0 extends Subscription {}
196+
public static class Transaction0 extends Transaction {}
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}

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