/*
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* Copyright 2011-17 Fraunhofer ISE, energy & meteo Systems GmbH and other contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package org.openmuc.openiec61850;
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import org.openmuc.jasn1.ber.types.BerBitString;
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import org.openmuc.openiec61850.internal.mms.asn1.Data;
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import org.openmuc.openiec61850.internal.mms.asn1.Integer32;
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import org.openmuc.openiec61850.internal.mms.asn1.TypeDescription;
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abstract public class BdaBitString extends BasicDataAttribute {
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byte[] value;
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final int maxNumBits;
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public BdaBitString(ObjectReference objectReference, Fc fc, String sAddr, int maxNumBits, boolean dchg,
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boolean dupd) {
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super(objectReference, fc, sAddr, dchg, dupd);
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this.maxNumBits = maxNumBits;
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}
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public byte[] getValue() {
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return value;
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}
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public void setValue(byte[] value) {
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if (value.length != ((maxNumBits - 1) / 8 + 1)) {
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throw new IllegalArgumentException("value does not have correct length.");
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}
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this.value = value;
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}
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@Override
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void setValueFrom(BasicDataAttribute bda) {
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byte[] srcValue = ((BdaBitString) bda).getValue();
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if (value.length != srcValue.length) {
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value = new byte[srcValue.length];
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}
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System.arraycopy(srcValue, 0, value, 0, srcValue.length);
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}
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public int getMaxNumBits() {
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return maxNumBits;
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}
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/**
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* Initializes BIT_STRING with all zeros
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*/
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@Override
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public void setDefault() {
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value = new byte[(maxNumBits - 1) / 8 + 1];
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}
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@Override
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Data getMmsDataObj() {
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Data data = new Data();
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data.setBitString(new BerBitString(value, maxNumBits));
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return data;
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}
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@Override
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void setValueFromMmsDataObj(Data data) throws ServiceError {
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if (data.getBitString() == null) {
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throw new ServiceError(ServiceError.TYPE_CONFLICT, "expected type: bit_string");
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}
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if (data.getBitString().numBits > maxNumBits) {
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throw new ServiceError(ServiceError.TYPE_CONFLICT, objectReference
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+ ": bit_string is bigger than type's size: " + data.getBitString().numBits + ">" + maxNumBits);
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}
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value = data.getBitString().value;
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}
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@Override
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TypeDescription getMmsTypeSpec() {
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TypeDescription typeDescription = new TypeDescription();
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typeDescription.setBitString(new Integer32(maxNumBits * -1));
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return typeDescription;
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}
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@Override
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public String toString() {
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return getReference().toString() + ": " + HexConverter.toHexString(value);
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}
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}
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