juneau-core/juneau-marshall/src/main/java/org/apache/juneau/html/HtmlStrippedDocSerializerSession.java

// ***************************************************************************************************************************
// * 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                                                                             *
// *                                                                                                                         *
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// * specific language governing permissions and limitations under the License.                                              *
// ***************************************************************************************************************************
package org.apache.juneau.html;

import java.io.IOException;
import java.lang.reflect.*;
import java.util.*;

import org.apache.juneau.*;
import org.apache.juneau.serializer.*;

/**
 * Session object that lives for the duration of a single use of {@link HtmlStrippedDocSerializer}.
 *
 * <p>
 * This class is NOT thread safe.  It is meant to be discarded after one-time use.
 */
public class HtmlStrippedDocSerializerSession extends HtmlSerializerSession {

	/**
	 * Create a new session using properties specified in the context.
	 *
	 * @param ctx
	 * 	The context creating this session object.
	 * 	The context contains all the configuration settings for this object.
	 * @param args
	 * 	Runtime arguments.
	 */
	protected HtmlStrippedDocSerializerSession(HtmlStrippedDocSerializer ctx, SerializerSessionArgs args) {
		super(ctx, args);
	}

	@Override /* SerializerSession */
	protected void doSerialize(SerializerPipe out, Object o) throws IOException, SerializeException {
		try (HtmlWriter w = getHtmlWriter(out)) {
			if (o == null
				|| (o instanceof Collection && ((Collection<?>)o).size() == 0)
				|| (o.getClass().isArray() && Array.getLength(o) == 0))
				w.sTag(1, "p").append("No Results").eTag("p").nl(1);
			else
				super.doSerialize(out, o);
		}
	}

	//-----------------------------------------------------------------------------------------------------------------
	// Other methods
	//-----------------------------------------------------------------------------------------------------------------

	@Override /* Session */
	public ObjectMap toMap() {
		return super.toMap()
			.append("HtmlStrippedDocSerializerSession", new DefaultFilteringObjectMap()
		);
	}
}