JsonHierarchicalStreamDriver.java
/*
* Copyright (C) 2006 Joe Walnes.
* Copyright (C) 2006, 2007, 2008, 2011, 2014, 2020 XStream Committers.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
* Created on 22. June 2006 by Mauro Talevi
*/
package com.thoughtworks.xstream.io.json;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import com.thoughtworks.xstream.io.AbstractDriver;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.naming.NameCoder;
/**
* A driver for JSON that writes optimized JSON format, but is not able to deserialize the result.
*
* @author Paul Hammant
* @since 1.2
*/
public class JsonHierarchicalStreamDriver extends AbstractDriver {
/**
* Construct a JsonHierarchicalStreamDriver.
*/
public JsonHierarchicalStreamDriver() {
super();
}
/**
* Construct a JsonHierarchicalStreamDriver with name coding.
*
* @param nameCoder the coder to encode and decode the JSON labels.
* @since 1.4.2
*/
public JsonHierarchicalStreamDriver(final NameCoder nameCoder) {
super(nameCoder);
}
@Override
public HierarchicalStreamReader createReader(final Reader in) {
throw new UnsupportedOperationException("The JsonHierarchicalStreamDriver can only write JSON");
}
@Override
public HierarchicalStreamReader createReader(final InputStream in) {
throw new UnsupportedOperationException("The JsonHierarchicalStreamDriver can only write JSON");
}
@Override
public HierarchicalStreamReader createReader(final URL in) {
throw new UnsupportedOperationException("The JsonHierarchicalStreamDriver can only write JSON");
}
@Override
public HierarchicalStreamReader createReader(final File in) {
throw new UnsupportedOperationException("The JsonHierarchicalStreamDriver can only write JSON");
}
/**
* Create a HierarchicalStreamWriter that writes JSON.
*/
@Override
public HierarchicalStreamWriter createWriter(final Writer out) {
return new JsonWriter(out);
}
@Override
public HierarchicalStreamWriter createWriter(final OutputStream out) {
// JSON spec requires UTF-8
return createWriter(new OutputStreamWriter(out, StandardCharsets.UTF_8));
}
}