/**
* hbaseのsc_item_dataのrow-keyを生成する
*
* @param shopID 店舗ID
* @param itemID 商品ID
* @return row-key
*/
public static byte[] encodeRowkey(int shopID, int itemID) {
if (shopID == -1 || itemID == -1) {
return new byte[0];
}
// row key: shop_id + item_id
byte[] bshopid = ByteArray.toByte32Radix(shopID, SIZE_OF_SHOP_ID_32);
byte[] bitemid = ByteArray.toByte32Radix(itemID, SIZE_OF_ITEM_ID_32);
byte[] rowKey = ByteArray.concatenate(bshopid, bitemid);
return rowKey;
}
/**
* row keyを文字列にdecode
*
* @param rowkey row key
* @return 10進のshop_id-item_id
*/
public static String decodeRowkey(byte[] rowkey) {
int srcOffset = 0;
byte[] bShopID = new byte[SIZE_OF_SHOP_ID_32];
System.arraycopy(rowkey, srcOffset, bShopID, 0, SIZE_OF_SHOP_ID_32);
srcOffset += SIZE_OF_SHOP_ID_32;
byte[] bItemID = new byte[SIZE_OF_ITEM_ID_32];
System.arraycopy(rowkey, srcOffset, bItemID, 0, SIZE_OF_ITEM_ID_32);
long shopID = ByteArray.toDecimal(bShopID);
long itemID = ByteArray.toDecimal(bItemID);
return String.format("%d-%d", shopID, itemID);
}