/*
* Copyright 2010 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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 com.alibaba.citrus.service.requestcontext.session.valueencoder.impl;
import static com.alibaba.citrus.service.configuration.support.PropertyEditorRegistrarsSupport.*;
import static com.alibaba.citrus.springext.util.DomUtil.*;
import static com.alibaba.citrus.springext.util.SpringExtUtil.*;
import static com.alibaba.citrus.util.Assert.*;
import static com.alibaba.citrus.util.CollectionUtil.*;
import java.util.Map;
import org.springframework.beans.TypeConverter;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.ParserContext;
import org.w3c.dom.Element;
import com.alibaba.citrus.service.requestcontext.session.valueencoder.AbstractSessionValueEncoder;
import com.alibaba.citrus.service.requestcontext.util.QueryStringParser;
import com.alibaba.citrus.springext.ConfigurationPoint;
import com.alibaba.citrus.springext.Contribution;
import com.alibaba.citrus.springext.ContributionAware;
import com.alibaba.citrus.springext.support.parser.AbstractSingleBeanDefinitionParser;
/**
* ��һ��<code>Map</code>������ַ�������֮��֧�ּ��ܡ�
*
* @author Michael Zhou
*/
public class MappedValuesEncoder extends AbstractSessionValueEncoder {
private Class<?> valueType;
public void setValueType(Class<?> type) {
this.valueType = type;
}
@Override
protected boolean doURLEncode() {
return false;
}
/**
* ����ֵѹ����ȡ�õ��ַ����϶̡�
*/
@Override
protected boolean doCompress() {
return true;
}
protected String getEqualSign() {
return ":";
}
@Override
protected String encodeValue(Object value) throws Exception {
assertTrue(value instanceof Map, "wrong session attribute type: " + value.getClass());
Map<?, ?> map = (Map<?, ?>) value;
Map<String, String> encodedMap = createLinkedHashMap();
TypeConverter converter = getTypeConverter();
for (Map.Entry<?, ?> entry : map.entrySet()) {
String key = String.valueOf(entry.getKey());
String encodedValue = convertToString(valueType, entry.getValue(), converter);
encodedMap.put(key, encodedValue);
}
return new QueryStringParser(getCharset()).setEqualSign(getEqualSign()).append(encodedMap).toQueryString();
}
@Override
protected Object decodeValue(String encodedValue) throws Exception {
final Map<String, Object> map = createLinkedHashMap();
final TypeConverter converter = getTypeConverter();
new QueryStringParser(getCharset()) {
@Override
protected void add(String key, String encodedValue) {
map.put(key, convertToType(valueType, encodedValue, converter));
}
}.setEqualSign(getEqualSign()).parse(encodedValue);
return map;
}
public static class DefinitionParser extends AbstractSingleBeanDefinitionParser<MappedValuesEncoder> implements
ContributionAware {
private ConfigurationPoint encrypterConfigurationPoint;
public void setContribution(Contribution contrib) {
this.encrypterConfigurationPoint = getSiblingConfigurationPoint("services/request-contexts/session/"
+ "encrypters", contrib);
}
@Override
protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
attributesToProperties(element, builder, "valueType", "charset");
builder.addPropertyValue("propertyEditorRegistrars", parseRegistrars(element, parserContext, builder));
for (Element subElement : subElements(element)) {
BeanDefinitionHolder encrypter = parseConfigurationPointBean(subElement, encrypterConfigurationPoint,
parserContext, builder);
if (encrypter != null) {
builder.addPropertyValue("encrypter", encrypter);
break;
}
}
}
}
}