/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.core.internal.transformer.simple;
import static org.mule.runtime.core.api.Event.getCurrentEvent;
import org.mule.runtime.api.metadata.DataType;
import org.mule.runtime.api.streaming.bytes.CursorStreamProvider;
import org.mule.runtime.core.api.transformer.TransformerException;
import org.mule.runtime.core.message.OutputHandler;
import org.mule.runtime.core.transformer.simple.SerializableToByteArray;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.charset.Charset;
/**
* <code>ObjectToInputStream</code> converts Serializable objects to an InputStream but treats <code>java.lang.String</code>,
* <code>byte[]</code> and <code>org.mule.runtime.core.message.OutputHandler</code> differently by using their byte[] content
* rather thqn Serializing them.
*/
public class ObjectToInputStream extends SerializableToByteArray {
public ObjectToInputStream() {
this.registerSourceType(DataType.STRING);
this.registerSourceType(DataType.fromType(OutputHandler.class));
setReturnDataType(DataType.INPUT_STREAM);
}
@Override
public Object doTransform(Object src, Charset encoding) throws TransformerException {
try {
if (src instanceof String) {
return new ByteArrayInputStream(((String) src).getBytes(encoding));
} else if (src instanceof CursorStreamProvider) {
return ((CursorStreamProvider) src).openCursor();
} else if (src instanceof byte[]) {
return new ByteArrayInputStream((byte[]) src);
} else if (src instanceof OutputHandler) {
OutputHandler oh = (OutputHandler) src;
ByteArrayOutputStream out = new ByteArrayOutputStream();
oh.write(getCurrentEvent(), out);
return new ByteArrayInputStream(out.toByteArray());
} else {
return new ByteArrayInputStream((byte[]) super.doTransform(src, encoding));
}
} catch (Exception e) {
throw new TransformerException(this, e);
}
}
}