com.sun.xml.messaging.saaj.soap.XmlDataContentHandler Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.messaging.saaj.soap;
import java.awt.datatransfer.DataFlavor;
import java.io.IOException;
import java.io.OutputStream;
import jakarta.activation.*;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import com.sun.xml.messaging.saaj.util.transform.EfficientStreamingTransformer;
/**
* JAF data handler for XML content
*
* @author Anil Vijendran
*/
public class XmlDataContentHandler implements DataContentHandler {
public static final String STR_SRC = "javax.xml.transform.stream.StreamSource";
private static Class streamSourceClass = null;
public XmlDataContentHandler() throws ClassNotFoundException {
if (streamSourceClass == null) {
streamSourceClass = Class.forName(STR_SRC);
}
}
/**
* return the DataFlavors for this DataContentHandler
* @return The DataFlavors.
*/
@Override
public ActivationDataFlavor[] getTransferDataFlavors() { // throws Exception;
ActivationDataFlavor flavors[] = new ActivationDataFlavor[2];
flavors[0] =
new ActivationDataFlavor(streamSourceClass, "text/xml", "XML");
flavors[1] =
new ActivationDataFlavor(streamSourceClass, "application/xml", "XML");
return flavors;
}
/**
* return the Transfer Data of type DataFlavor from InputStream
* @param flavor The DataFlavor.
* @param dataSource The DataSource.
* @return The constructed Object.
*/
@Override
public Object getTransferData(ActivationDataFlavor flavor, DataSource dataSource)
throws IOException {
if (flavor.getMimeType().startsWith("text/xml") ||
flavor.getMimeType().startsWith("application/xml")) {
if (flavor.getRepresentationClass().getName().equals(STR_SRC)) {
return new StreamSource(dataSource.getInputStream());
}
}
return null;
}
/**
*
*/
@Override
public Object getContent(DataSource dataSource) throws IOException {
return new StreamSource(dataSource.getInputStream());
}
/**
* construct an object from a byte stream
* (similar semantically to previous method, we are deciding
* which one to support)
*/
@Override
public void writeTo(Object obj, String mimeType, OutputStream os)
throws IOException {
if (!mimeType.startsWith("text/xml") && !mimeType.startsWith("application/xml"))
throw new IOException(
"Invalid content type \"" + mimeType + "\" for XmlDCH");
try {
Transformer transformer = EfficientStreamingTransformer.newTransformer();
StreamResult result = new StreamResult(os);
if (obj instanceof DataSource) {
// Streaming transform applies only to javax.xml.transform.StreamSource
transformer.transform((Source) getContent((DataSource)obj), result);
} else {
Source src=null;
if (obj instanceof String) {
src= new StreamSource(new java.io.StringReader((String) obj));
} else {
src=(Source) obj;
}
transformer.transform(src, result);
}
} catch (Exception ex) {
throw new IOException(
"Unable to run the JAXP transformer on a stream "
+ ex.getMessage());
}
}
}