/*
* Copyright 2011-2013 HTTL Team.
*
* 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 httl.spi.methods;
import httl.spi.Codec;
import httl.util.ClassUtils;
import java.text.ParseException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* CodecMethod. (SPI, Singleton, ThreadSafe)
*
* @author Liang Fei (liangfei0201 AT gmail DOT com)
*/
public class CodecMethod {
private final Map<String, Codec> codecs = new ConcurrentHashMap<String, Codec>();
private String[] importPackages;
public void setCodecs(Codec[] codecs) {
for (Codec codec : codecs) {
this.codecs.put(codec.getFormat(), codec);
}
}
public void setImportPackages(String[] importPackages) {
this.importPackages = importPackages;
}
private Codec getAndCheckCodec(String format) {
Codec codec = codecs.get(format);
if (codec == null) {
throw new IllegalStateException("Unsupported encode format " + format + ", please add config codecs+=com.your." + format + "Codec" + " in httl.properties.");
}
return codec;
}
public String encode(Object value, String format) {
return getAndCheckCodec(format).toString(null, value);
}
public Object decode(String value, String format) throws ParseException {
return decode(value, (Class<?>) null, format);
}
public Object decode(String value, String type, String format) throws ParseException {
return decode(value, ClassUtils.forName(importPackages, type), format);
}
public <T> T decode(String value, Class<T> type, String format) throws ParseException {
return getAndCheckCodec(format).valueOf(value, type);
}
public String encodeJson(Object value) {
return encode(value, "json");
}
public Object decodeJson(String value) throws ParseException {
return decode(value, (Class<?>) null, "json");
}
public <T> T decodeJson(String value, Class<T> type) throws ParseException {
return decode(value, type, "json");
}
public Object decodeJson(String value, String type) throws ParseException {
return decode(value, type, "json");
}
public String encodeXml(Object value) {
return encode(value, "xml");
}
public Object decodeXml(String value) throws ParseException {
return decode(value, "xml");
}
public <T> T decodeXml(String value, Class<T> type) throws ParseException {
return decode(value, type, "xml");
}
public Object decodeXml(String value, String type) throws ParseException {
return decode(value, type, "xml");
}
}