RotationXmlTokenBuilder.java
/* Copyright 2002-2022 CS GROUP
* Licensed to CS GROUP (CS) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* CS 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
*
* 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 org.orekit.files.ccsds.ndm.adm;
import java.util.Collections;
import java.util.List;
import org.orekit.files.ccsds.utils.lexical.ParseToken;
import org.orekit.files.ccsds.utils.lexical.TokenType;
import org.orekit.files.ccsds.utils.lexical.XmlTokenBuilder;
import org.orekit.utils.units.Unit;
import org.orekit.utils.units.UnitsCache;
import org.xml.sax.Attributes;
/** Builder for rotation angles and rates.
* <p>
* Instances of this class are immutable.
* </p>
* @author Luc Maisonobe
* @since 11.0
*/
public class RotationXmlTokenBuilder implements XmlTokenBuilder {
/** Attribute defining rotation angle. */
private static final String ANGLE = "angle";
/** Attribute defining rotation rate. */
private static final String RATE = "rate";
/** Attribute name for units. */
private static final String UNITS = "units";
/** Cache for parsed units. */
private final UnitsCache cache;
/** Simple constructor.
*/
public RotationXmlTokenBuilder() {
this.cache = new UnitsCache();
}
/** {@inheritDoc} */
@Override
public List<ParseToken> buildTokens(final boolean startTag, final String qName,
final String content, final Attributes attributes,
final int lineNumber, final String fileName) {
// get the token name from the first attribute found
String name = attributes.getValue(ANGLE);
if (name == null) {
name = attributes.getValue(RATE);
}
// elaborate the token type
final TokenType type = (content == null) ? (startTag ? TokenType.START : TokenType.STOP) : TokenType.ENTRY;
// get units
final Unit units = cache.getUnits(attributes.getValue(UNITS));
// final build
final ParseToken token = new ParseToken(type, name, content, units, lineNumber, fileName);
return Collections.singletonList(token);
}
}