org.ccsds.moims.mo.mal.encoding.MALEncodingContext Maven / Gradle / Ivy
/* ----------------------------------------------------------------------------
* Copyright (C) 2013 European Space Agency
* European Space Operations Centre
* Darmstadt
* Germany
* ----------------------------------------------------------------------------
* System : CCSDS MO MAL Java API
* ----------------------------------------------------------------------------
* Licensed under the European Space Agency Public License, Version 2.0
* You may not use this file except in compliance with the License.
*
* Except as expressly set forth in this License, the Software is provided to
* You on an "as is" basis and without warranties of any kind, including without
* limitation merchantability, fitness for a particular purpose, absence of
* defects or errors, accuracy or non-infringement of intellectual property rights.
*
* See the License for the specific language governing permissions and
* limitations under the License.
* ----------------------------------------------------------------------------
*/
package org.ccsds.moims.mo.mal.encoding;
import org.ccsds.moims.mo.mal.NotFoundException;
import org.ccsds.moims.mo.mal.OperationField;
import org.ccsds.moims.mo.mal.structures.UInteger;
import org.ccsds.moims.mo.mal.structures.UOctet;
import org.ccsds.moims.mo.mal.transport.MALMessageHeader;
/**
* The class MALEncodingContext gives access to: the header of the MALMessage
* that contains the Element to encode or decode; the description of the
* operation that has been called; the index of the body element to encode or
* decode;
*
*/
public class MALEncodingContext {
private static final OperationField[] ERROR_OPERATION_FIELD = new OperationField[]{
new OperationField("errorCode", false, UInteger.UINTEGER_SHORT_FORM),
new OperationField("extraInfo", true, null)
};
private final MALMessageHeader header;
/**
* Creates an instance.
*
* @param header The MAL message header.
*/
public MALEncodingContext(final MALMessageHeader header) {
this.header = header;
}
/**
* Returns the header.
*
* @return the header
*/
public MALMessageHeader getHeader() {
return header;
}
public OperationField[] getOperationFields() throws NotFoundException {
if (header.getIsErrorMessage()) {
return ERROR_OPERATION_FIELD;
}
UOctet stage = header.getInteractionStage();
return header.getMALOperation().getFieldsOnStage(stage);
}
}