/**
* 升级第4步 检查升级包是否传输完毕，首先客户端读取image_transferred_blocks_status（image
* transfer对象的属性3）获取各个imageBlock是否已接收的bitmap，如发现有遗漏的block，则补发相应的block，直至所有的block都被表计接收；当(image_transferred_blocks/8)>
* ImageBlockSize时，客户端需采用选择性读（选择性参数=entry_descriptor）来实现分组读取所有image_transferred_blocks的bitmap，如ImageBlockSize=100，image_transferred_blocks=1800，则客户端需要分三次来读取bitmap(第一次的entry_descriptor中From_entry=0，to_entry=99；第二次entry_descriptor中From_entry=100，to_entry=199；第三次entry_descriptor中From_entry=200，to_entry=00。Entry_descriptor的使用详见《DLMS/COSEM应用层标准》)；
*
* @param req
* @param dr
*/
private void upgradeStep_04(DlmsRequest req, DlmsRequest dr) {
setRequestParam(dr, new ObisDescription(18, "0.0.44.0.0.255", 3));
dr.setOpType(DLMS_OP_TYPE.OP_GET);
dr.removeAppendParam(DlmsUpgradeAssisant.CURRENT_RESSIUE_NUM);
int i_maxSize = (Integer) dr.getAppendParam(DlmsUpgradeAssisant.MAX_SIZE);
int blockCount = (Integer) dr.getAppendParam(DlmsUpgradeAssisant.BLOCK_COUNT);
if (blockCount / 8
> i_maxSize) { // 按照新的标准:如果(image_transferred_blocks/8)> ImageBlockSize,选择性读，否则，直接读
int fromIndex = getRessiueBlocks(req, dr);
int nextIndex = fromIndex + i_maxSize - 1; // 假如读3次的话[0,i_maxSize-1],[i_maxSize,199]
if (nextIndex > (blockCount / 8)) { // 最后一次读，读完之后，转移到第4步
nextIndex = 0;
dr.setOperator(DlmsUpgradeAssisant.UPGRADE_04);
} else { // 继续读
dr.setOperator(DlmsUpgradeAssisant.UPGRADE_READMAP);
dr.addAppendParam(DlmsUpgradeAssisant.CURRENT_INDEX, nextIndex + 1);
}
// 分多次读
SelectiveAccessDescriptor sad = new SelectiveAccessDescriptor();
sad.selectByIndex(fromIndex, nextIndex);
dr.getParams()[0].accessSelector = 2;
dr.getParams()[0].data.assignValue(sad.getParameter());
} else { // 直接读，读完之后转移到第4步
dr.setOperator(DlmsUpgradeAssisant.UPGRADE_04);
}
}
/**
* 升级初始化
*
* @param req
* @param dr
* @param i_maxSize
*/
private void upgradeInit(DlmsRequest req, DlmsRequest dr, int i_maxSize) {
dr.removeAppendParam(DlmsUpgradeAssisant.CURRENT_BLOCK_NUM);
dr.addAppendParam(DlmsUpgradeAssisant.MAX_SIZE, i_maxSize);
dr.setOpType(DLMS_OP_TYPE.OP_ACTION);
setRequestParam(dr, new ObisDescription(18, "0.0.44.0.0.255", 1)); // 初始化
DlmsData data = new DlmsData();
DlmsData[] datas = new DlmsData[2];
byte[] content = DlmsUpgradeAssisant.getInstance().getFtpFileContent(req);
dr.addAppendParam(DlmsUpgradeAssisant.UPGRADE_CONTENT, content);
dr.addAppendParam(DlmsUpgradeAssisant.BLOCK_COUNT, content.length / i_maxSize); // 块数
byte[] fileHead = fileHeadConstruct(req);
dr.addAppendParam(DlmsUpgradeAssisant.FILE_HEAD, HexDump.toHex(fileHead));
datas[0] = new DlmsData(); // image_identifier
datas[0].setOctetString(fileHead);
datas[1] = new DlmsData(); // image_szie
datas[1].setDoubleLongUnsigned(content.length);
ASN1SequenceOf struct = new ASN1SequenceOf(datas);
data.setStructure(struct);
dr.getParams()[0].data = data;
dr.setOperator(DlmsUpgradeAssisant.UPGRADE_02);
}
