/*
* Copyright 2004-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
package org.slim3.datastore.json;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Date;
import org.slim3.datastore.Datastore;
import org.slim3.datastore.InverseModelListRef;
import org.slim3.datastore.InverseModelRef;
import org.slim3.datastore.ModelRef;
import com.google.appengine.api.blobstore.BlobKey;
import com.google.appengine.api.datastore.Blob;
import com.google.appengine.api.datastore.Category;
import com.google.appengine.api.datastore.Email;
import com.google.appengine.api.datastore.GeoPt;
import com.google.appengine.api.datastore.IMHandle;
import com.google.appengine.api.datastore.Key;
import com.google.appengine.api.datastore.KeyFactory;
import com.google.appengine.api.datastore.Link;
import com.google.appengine.api.datastore.PhoneNumber;
import com.google.appengine.api.datastore.PostalAddress;
import com.google.appengine.api.datastore.Rating;
import com.google.appengine.api.datastore.ShortBlob;
import com.google.appengine.api.datastore.Text;
import com.google.appengine.api.datastore.IMHandle.Scheme;
import com.google.appengine.api.users.User;
import com.google.appengine.repackaged.com.google.common.util.Base64;
import com.google.appengine.repackaged.com.google.common.util.Base64DecoderException;
/**
* The Default JSON encoder.
*
* @author Takao Nakaguchi
*
* @since 1.0.6
*/
public class Default implements JsonCoder{
@Override
public void encode(JsonWriter writer, Boolean value) {
writer.writeValue(value);
}
@Override
public void encode(JsonWriter writer, Short value) {
writer.writeValue(value);
}
@Override
public void encode(JsonWriter writer, Integer value) {
writer.writeValue(value);
}
@Override
public void encode(JsonWriter writer, Long value) {
writer.writeValue(value);
}
@Override
public void encode(JsonWriter writer, Float value) {
writer.writeValue(value);
}
@Override
public void encode(JsonWriter writer, Double value) {
writer.writeValue(value);
}
@Override
public void encode(JsonWriter writer, String value) {
writer.writeString(value);
}
@Override
public void encode(JsonWriter writer, Date value) {
writer.writeValue(value.getTime());
}
@Override
public void encode(JsonWriter writer, Enum<?> value) {
writer.writeString(value.name());
}
@Override
public void encode(JsonWriter writer, Blob value) {
if(value != null && value.getBytes() != null){
writer.writeString(Base64.encode(value.getBytes()));
} else{
writer.writeNull();
}
}
@Override
public void encode(JsonWriter writer, BlobKey value) {
writer.writeString(value.getKeyString());
}
@Override
public void encode(JsonWriter writer, Category value) {
writer.writeString(value.getCategory());
}
@Override
public void encode(JsonWriter writer, Email value) {
writer.writeString(value.getEmail());
}
@Override
public void encode(JsonWriter writer, GeoPt value) {
writer.beginObject();
writer.writeValueProperty("latitude", value.getLatitude());
writer.writeValueProperty("longitude", value.getLongitude());
writer.endObject();
}
@Override
public void encode(JsonWriter writer, IMHandle value) {
writer.beginObject();
writer.writeStringProperty("address", value.getAddress());
writer.writeStringProperty("protocol", value.getProtocol());
writer.endObject();
}
@Override
public void encode(JsonWriter writer, Key value) {
writer.writeString(KeyFactory.keyToString(value));
}
@Override
public void encode(JsonWriter writer, Link value) {
writer.writeString(value.getValue());
}
@Override
public void encode(JsonWriter writer, PhoneNumber value) {
writer.writeString(value.getNumber());
}
@Override
public void encode(JsonWriter writer, PostalAddress value) {
writer.writeString(value.getAddress());
}
@Override
public void encode(JsonWriter writer, Rating value) {
writer.writeValue(value.getRating());
}
@Override
public void encode(JsonWriter writer, ShortBlob value) {
if(value != null && value.getBytes() != null){
writer.writeString(Base64.encode(value.getBytes()));
} else{
writer.writeNull();
}
}
@Override
public void encode(JsonWriter writer, Text value) {
if(value != null && value.getValue() != null){
writer.writeString(value.getValue());
} else{
writer.writeNull();
}
}
@Override
public void encode(JsonWriter writer, User value) {
writer.beginObject();
writer.writeStringProperty("authDomain", value.getAuthDomain());
writer.writeStringProperty("email", value.getEmail());
if(value.getFederatedIdentity() != null){
writer.writeStringProperty("federatedIdentity", value.getFederatedIdentity());
}
if(value.getUserId() != null){
writer.writeStringProperty("userId", value.getUserId());
}
writer.endObject();
}
@Override
public void encode(JsonWriter writer, ModelRef<?> value, int maxDepth, int currentDepth) {
Key key = value.getKey();
if(key != null){
writer.writeString(Datastore.keyToString(key));
} else{
writer.writeNull();
}
}
@Override
public void encode(JsonWriter writer, InverseModelRef<?, ?> value,
int maxDepth, int currentDepth) {
}
@Override
public void encode(JsonWriter writer, InverseModelListRef<?, ?> value,
int maxDepth, int currentDepth) {
}
@Override
public void encode(JsonWriter writer, Object value) {
}
@Override
public Boolean decode(JsonReader reader, Boolean defaultValue) {
String text = reader.read();
if(text != null){
return Boolean.valueOf(text);
}
return defaultValue;
}
@Override
public Short decode(JsonReader reader, Short defaultValue) {
String text = reader.read();
if(text != null){
try{
return Short.valueOf(text);
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public Integer decode(JsonReader reader, Integer defaultValue) {
String text = reader.read();
if(text != null){
try{
return Integer.valueOf(text);
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public Long decode(JsonReader reader, Long defaultValue) {
String text = reader.read();
if(text != null){
try{
return Long.parseLong(text);
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public Float decode(JsonReader reader, Float defaultValue) {
String text = reader.read();
if(text != null){
try{
return Float.valueOf(text);
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public Double decode(JsonReader reader, Double defaultValue) {
String text = reader.read();
if(text != null){
try{
return Double.valueOf(text);
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public String decode(JsonReader reader, String defaultValue) {
String text = reader.read();
if(text != null){
return text;
}
return defaultValue;
}
@Override
public Date decode(JsonReader reader, Date defaultValue) {
String text = reader.read();
if(text != null){
try{
return new Date(Long.parseLong(text));
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public <T extends Enum<T>> T decode(JsonReader reader,
T defaultValue, Class<T> clazz) {
String text = reader.read();
if(text != null){
try{
return Enum.valueOf(clazz, text);
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public Blob decode(JsonReader reader, Blob defaultValue) {
String text = reader.read();
if(text != null){
try{
return new Blob(Base64.decode(text));
} catch(Base64DecoderException e){
}
}
return defaultValue;
}
@Override
public BlobKey decode(JsonReader reader, BlobKey defaultValue) {
String text = reader.read();
if(text != null){
return new BlobKey(text);
}
return defaultValue;
}
@Override
public Category decode(JsonReader reader, Category defaultValue) {
String text = reader.read();
if(text != null){
return new Category(text);
}
return defaultValue;
}
@Override
public Email decode(JsonReader reader, Email defaultValue) {
String text = reader.read();
if(text != null){
return new Email(text);
}
return defaultValue;
}
@Override
public GeoPt decode(JsonReader reader, GeoPt defaultValue) {
String latitude = reader.readProperty("latitude");
String longitude = reader.readProperty("longitude");
if(latitude != null && longitude != null){
try{
return new GeoPt(
Float.parseFloat(latitude)
, Float.parseFloat(longitude)
);
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public IMHandle decode(JsonReader reader, IMHandle defaultValue) {
String address = reader.readProperty("address");
String protocol = reader.readProperty("protocol");
if(address != null && protocol != null){
try{
return new IMHandle(
Scheme.valueOf(protocol)
, address);
} catch(IllegalArgumentException e){
}
try{
return new IMHandle(
new URL(protocol)
, address);
} catch(MalformedURLException e){
}
}
return defaultValue;
}
@Override
public Key decode(JsonReader reader, Key defaultValue) {
String text = reader.read();
if(text != null){
return KeyFactory.stringToKey(text);
}
return defaultValue;
}
@Override
public Link decode(JsonReader reader, Link defaultValue) {
String text = reader.read();
if(text != null){
return new Link(text);
}
return defaultValue;
}
@Override
public PhoneNumber decode(JsonReader reader, PhoneNumber defaultValue) {
String text = reader.read();
if(text != null){
return new PhoneNumber(text);
}
return defaultValue;
}
@Override
public PostalAddress decode(JsonReader reader, PostalAddress defaultValue) {
String text = reader.read();
if(text != null){
return new PostalAddress(text);
}
return defaultValue;
}
@Override
public Rating decode(JsonReader reader, Rating defaultValue) {
String text = reader.read();
if(text != null){
try{
return new Rating(Integer.parseInt(text));
} catch(NumberFormatException e){
}
}
return defaultValue;
}
@Override
public ShortBlob decode(JsonReader reader, ShortBlob defaultValue) {
String text = reader.read();
if(text != null){
try{
return new ShortBlob(Base64.decode(text));
} catch(Base64DecoderException e){
}
}
return defaultValue;
}
@Override
public Text decode(JsonReader reader, Text defaultValue) {
String text = reader.read();
if(text != null){
return new Text(text);
}
return defaultValue;
}
@Override
public User decode(JsonReader reader, User defaultValue) {
String authDomain = reader.readProperty("authDomain");
String email = reader.readProperty("email");
if(authDomain != null && email != null){
String userId = reader.readProperty("userId");
if(userId != null){
String federatedIdentity = reader.readProperty("federatedIdentity");
if(federatedIdentity != null){
return new User(email, authDomain, userId, federatedIdentity);
}
return new User(email, authDomain, userId);
}
return new User(email, authDomain);
}
return defaultValue;
}
@Override
public <T> void decode(JsonReader reader, ModelRef<T> modelRef, int maxDepth, int currentDepth) {
String text = reader.read();
if(text != null){
try{
modelRef.setKey(KeyFactory.stringToKey(text));
} catch(IllegalArgumentException e){
text = reader.readProperty("key");
if(text != null){
try{
modelRef.setKey(KeyFactory.stringToKey(text));
} catch(IllegalArgumentException e2){
}
}
}
}
}
@Override
public <T> T decode(JsonReader reader, T defaultValue, Class<T> clazz) {
return defaultValue;
}
}