SourceIdentifierWriter.java

/*
 * Lilith - a log event viewer.
 * Copyright (C) 2007-2016 Joern Huxhorn
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * Copyright 2007-2016 Joern Huxhorn
 *
 * Licensed 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 de.huxhorn.lilith.data.eventsource.xml;

import de.huxhorn.lilith.data.eventsource.SourceIdentifier;
import de.huxhorn.sulky.stax.GenericStreamWriter;
import de.huxhorn.sulky.stax.StaxUtilities;
import java.nio.charset.StandardCharsets;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;

public class SourceIdentifierWriter
	implements GenericStreamWriter<SourceIdentifier>, EventSourceSchemaConstants
{
	private boolean writingSchemaLocation;
	private String preferredPrefix;

	public SourceIdentifierWriter()
	{
	}

	public String getPreferredPrefix()
	{
		return preferredPrefix;
	}

	public void setPreferredPrefix(String preferredPrefix)
	{
		this.preferredPrefix = preferredPrefix;
	}

	public boolean isWritingSchemaLocation()
	{
		return writingSchemaLocation;
	}

	public void setWritingSchemaLocation(boolean writingSchemaLocation)
	{
		this.writingSchemaLocation = writingSchemaLocation;
	}

	public void write(XMLStreamWriter writer, SourceIdentifier sourceIdentifier, boolean isRoot)
		throws XMLStreamException
	{
		if(isRoot)
		{
			writer.writeStartDocument(StandardCharsets.UTF_8.toString(), "1.0");
		}
		StaxUtilities.NamespaceInfo ni = StaxUtilities
			.setNamespace(writer, preferredPrefix, NAMESPACE_URI, DEFAULT_NAMESPACE_PREFIX);
		String prefix = ni.getPrefix();

		StaxUtilities.writeEmptyElement(writer, prefix, NAMESPACE_URI, SOURCE_IDENTIFIER_NODE);
		if(ni.isCreated())
		{
			StaxUtilities.writeNamespace(writer, prefix, NAMESPACE_URI);
		}
		if(isRoot && writingSchemaLocation)
		{
			writer
				.writeNamespace(StaxUtilities.XML_SCHEMA_INSTANCE_PREFIX, StaxUtilities.XML_SCHEMA_INSTANCE_NAMESPACE_URI);
			ni = StaxUtilities
				.setNamespace(writer, StaxUtilities.XML_SCHEMA_INSTANCE_PREFIX, StaxUtilities.XML_SCHEMA_INSTANCE_NAMESPACE_URI, StaxUtilities.XML_SCHEMA_INSTANCE_PREFIX);
			if(ni.isCreated())
			{
				StaxUtilities.writeNamespace(writer, ni.getPrefix(), StaxUtilities.XML_SCHEMA_INSTANCE_NAMESPACE_URI);
			}
			StaxUtilities.writeAttribute(writer,
				true,
				StaxUtilities.XML_SCHEMA_INSTANCE_PREFIX,
				StaxUtilities.XML_SCHEMA_INSTANCE_NAMESPACE_URI,
				StaxUtilities.XML_SCHEMA_INSTANCE_SCHEMA_LOCATION_ATTRIBUTE,
				NAMESPACE_URI + " " + NAMESPACE_LOCATION);
		}
		StaxUtilities
			.writeAttribute(writer, false, prefix, NAMESPACE_URI, IDENTIFIER_ATTRIBUTE, sourceIdentifier.getIdentifier());

		StaxUtilities
			.writeAttributeIfNotNull(writer, false, prefix, NAMESPACE_URI, SECONDARY_IDENTIFIER_ATTRIBUTE, sourceIdentifier.getSecondaryIdentifier());
		//writer.writeEndElement();
		if(isRoot)
		{
			writer.writeEndDocument();
		}
	}
}