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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.databinding.json.jackson;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.tuscany.sca.databinding.PushTransformer;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.TransformationException;
import org.apache.tuscany.sca.databinding.json.JSONDataBinding;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.map.ObjectMapper;
import org.json.JSONArray;
import org.json.JSONObject;
/**
*
*/
public class JSON2OutputStream implements PushTransformer<Object, OutputStream> {
public String getSourceDataBinding() {
return JSONDataBinding.NAME;
}
public String getTargetDataBinding() {
return "application/json" + "#" + OutputStream.class.getName();
}
public void transform(Object source, OutputStream sink, TransformationContext context) {
if (source == null) {
return;
}
if (source instanceof InputStream) {
try {
InputStream input = (InputStream) source;
byte[] buffer = new byte[4096];
int n = 0;
while (-1 != (n = input.read(buffer))) {
sink.write(buffer, 0, n);
}
input.close();
} catch(IOException e) {
throw new TransformationException(e);
}
} else if (source instanceof JsonNode) {
JacksonHelper.write((JsonNode)source, sink);
} else if (source instanceof JsonParser) {
JacksonHelper.write((JsonParser)source, sink);
} else {
if (source instanceof String || source instanceof JSONObject
|| source instanceof JSONArray
|| source instanceof org.codehaus.jettison.json.JSONObject
|| source instanceof org.codehaus.jettison.json.JSONArray) {
try {
sink.write(source.toString().getBytes("UTF-8"));
} catch (Exception e) {
throw new TransformationException(e);
}
} else {
ObjectMapper mapper = JacksonHelper.createObjectMapper(source.getClass());
try {
mapper.writeValue(sink, source);
} catch (Throwable e) {
throw new TransformationException(e);
}
}
}
}
public int getWeight() {
return 50;
}
}
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