/*
* Copyright 1999-2101 Alibaba Group.
*
* 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.zbus.common.json.serializer;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
import org.zbus.common.json.JSON;
/**
* @author wenshao<szujobs@hotmail.com>
*/
public class MapSerializer implements ObjectSerializer {
public static MapSerializer instance = new MapSerializer();
@SuppressWarnings({ "rawtypes", "unchecked" })
public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType) throws IOException {
SerializeWriter out = serializer.getWriter();
if (object == null) {
out.writeNull();
return;
}
Map<?, ?> map = (Map<?, ?>) object;
if (out.isEnabled(SerializerFeature.SortField)) {
if ((!(map instanceof SortedMap)) && !(map instanceof LinkedHashMap)) {
try {
map = new TreeMap(map);
} catch (Exception ex) {
// skip
}
}
}
if (serializer.containsReference(object)) {
serializer.writeReference(object);
return;
}
SerialContext parent = serializer.getContext();
serializer.setContext(parent, object, fieldName);
try {
out.write('{');
serializer.incrementIndent();
Class<?> preClazz = null;
ObjectSerializer preWriter = null;
boolean first = true;
if (out.isEnabled(SerializerFeature.WriteClassName)) {
out.writeFieldName(JSON.DEFAULT_TYPE_KEY);
out.writeString(object.getClass().getName());
first = false;
}
for (Map.Entry entry : map.entrySet()) {
Object value = entry.getValue();
Object entryKey = entry.getKey();
{
List<PropertyPreFilter> preFilters = serializer.getPropertyPreFiltersDirect();
if (preFilters != null && preFilters.size() > 0) {
if (entryKey == null || entryKey instanceof String) {
if (!FilterUtils.applyName(serializer, object, (String) entryKey)) {
continue;
}
} else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
String strKey = JSON.toJSONString(entryKey);
if (!FilterUtils.applyName(serializer, object, strKey)) {
continue;
}
}
}
}
{
List<PropertyFilter> propertyFilters = serializer.getPropertyFiltersDirect();
if (propertyFilters != null && propertyFilters.size() > 0) {
if (entryKey == null || entryKey instanceof String) {
if (!FilterUtils.apply(serializer, object, (String) entryKey, value)) {
continue;
}
} else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
String strKey = JSON.toJSONString(entryKey);
if (!FilterUtils.apply(serializer, object, strKey, value)) {
continue;
}
}
}
}
{
List<NameFilter> nameFilters = serializer.getNameFiltersDirect();
if (nameFilters != null && nameFilters.size() > 0) {
if (entryKey == null || entryKey instanceof String) {
entryKey = FilterUtils.processKey(serializer, object, (String) entryKey, value);
} else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
String strKey = JSON.toJSONString(entryKey);
entryKey = FilterUtils.processKey(serializer, object, strKey, value);
}
}
}
{
List<ValueFilter> valueFilters = serializer.getValueFiltersDirect();
if (valueFilters != null && valueFilters.size() > 0) {
if (entryKey == null || entryKey instanceof String) {
value = FilterUtils.processValue(serializer, object, (String) entryKey, value);
} else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
String strKey = JSON.toJSONString(entryKey);
value = FilterUtils.processValue(serializer, object, strKey, value);
}
}
}
if (value == null) {
if (!serializer.isEnabled(SerializerFeature.WriteMapNullValue)) {
continue;
}
}
if (entryKey instanceof String) {
String key = (String) entryKey;
if (!first) {
out.write(',');
}
if (out.isEnabled(SerializerFeature.PrettyFormat)) {
serializer.println();
}
out.writeFieldName(key, true);
} else {
if (!first) {
out.write(',');
}
if (out.isEnabled(SerializerFeature.BrowserCompatible)
|| out.isEnabled(SerializerFeature.WriteNonStringKeyAsString)) {
String strEntryKey = JSON.toJSONString(entryKey);
serializer.write(strEntryKey);
} else {
serializer.write(entryKey);
}
out.write(':');
}
first = false;
if (value == null) {
out.writeNull();
continue;
}
Class<?> clazz = value.getClass();
if (clazz == preClazz) {
preWriter.write(serializer, value, entryKey, null);
} else {
preClazz = clazz;
preWriter = serializer.getObjectWriter(clazz);
preWriter.write(serializer, value, entryKey, null);
}
}
} finally {
serializer.setContext(parent);
}
serializer.decrementIdent();
if (out.isEnabled(SerializerFeature.PrettyFormat) && map.size() > 0) {
serializer.println();
}
out.write('}');
}
}