Examples with BufferHolder io.mycat.memory.unsafe.row.BufferHolder used on opensource projects

Example 1 with BufferHolder

use of io.mycat.memory.unsafe.row.BufferHolder in project Mycat-Server by MyCATApache.

the class TestSorter method runSorter.

public void runSorter(MyCatMemory myCatMemory, MemoryManager memoryManager, MycatPropertyConf conf) throws NoSuchFieldException, IllegalAccessException, IOException {
    DataNodeMemoryManager dataNodeMemoryManager = new DataNodeMemoryManager(memoryManager, Thread.currentThread().getId());
    /**
         * 1.schema ,模拟一个field字段值
         *
         */
    int fieldCount = 3;
    ColMeta colMeta = null;
    Map<String, ColMeta> colMetaMap = new HashMap<String, ColMeta>(fieldCount);
    colMeta = new ColMeta(0, ColMeta.COL_TYPE_STRING);
    colMetaMap.put("id", colMeta);
    colMeta = new ColMeta(1, ColMeta.COL_TYPE_STRING);
    colMetaMap.put("name", colMeta);
    colMeta = new ColMeta(2, ColMeta.COL_TYPE_STRING);
    colMetaMap.put("age", colMeta);
    OrderCol[] orderCols = new OrderCol[1];
    OrderCol orderCol = new OrderCol(colMetaMap.get("id"), OrderCol.COL_ORDER_TYPE_ASC);
    orderCols[0] = orderCol;
    /**
         * 2 .PrefixComputer
         */
    StructType schema = new StructType(colMetaMap, fieldCount);
    schema.setOrderCols(orderCols);
    UnsafeExternalRowSorter.PrefixComputer prefixComputer = new RowPrefixComputer(schema);
    /**
         * 3 .PrefixComparator 默认是ASC，可以选择DESC
         */
    final PrefixComparator prefixComparator = PrefixComparators.LONG;
    UnsafeExternalRowSorter sorter = new UnsafeExternalRowSorter(dataNodeMemoryManager, myCatMemory, schema, prefixComparator, prefixComputer, conf.getSizeAsBytes("mycat.buffer.pageSize", "1m"), true, /**使用基数排序？true or false*/
    true);
    UnsafeRow unsafeRow;
    BufferHolder bufferHolder;
    UnsafeRowWriter unsafeRowWriter;
    String line = "testUnsafeRow";
    final Random rand = new Random(42);
    for (int i = 0; i < TEST_SIZE; i++) {
        unsafeRow = new UnsafeRow(3);
        bufferHolder = new BufferHolder(unsafeRow);
        unsafeRowWriter = new UnsafeRowWriter(bufferHolder, 3);
        bufferHolder.reset();
        String key = getRandomString(rand.nextInt(300) + 100);
        unsafeRowWriter.write(0, key.getBytes());
        unsafeRowWriter.write(1, line.getBytes());
        unsafeRowWriter.write(2, ("35" + 1).getBytes());
        unsafeRow.setTotalSize(bufferHolder.totalSize());
        sorter.insertRow(unsafeRow);
    }
    Iterator<UnsafeRow> iter = sorter.sort();
    UnsafeRow row = null;
    int indexprint = 0;
    while (iter.hasNext()) {
        row = iter.next();
        indexprint++;
    }
    sorter.cleanupResources();
    countDownLatch.countDown();
    System.out.println("Thread ID :" + Thread.currentThread().getId() + "Index : " + indexprint);
}

Example 2 with BufferHolder

use of io.mycat.memory.unsafe.row.BufferHolder in project Mycat-Server by MyCATApache.

the class UnsafeRowGrouper method getAllBinaryRow.

public UnsafeRow getAllBinaryRow(UnsafeRow row) throws UnsupportedEncodingException {
    UnsafeRow value = new UnsafeRow(this.valuefieldCount);
    bufferHolder = new BufferHolder(value, 0);
    unsafeRowWriter = new UnsafeRowWriter(bufferHolder, this.valuefieldCount);
    bufferHolder.reset();
    ColMeta curColMeta = null;
    for (Map.Entry<String, ColMeta> fieldEntry : columToIndx.entrySet()) {
        curColMeta = fieldEntry.getValue();
        if (!row.isNullAt(curColMeta.colIndex)) {
            switch(curColMeta.colType) {
                case ColMeta.COL_TYPE_BIT:
                    unsafeRowWriter.write(curColMeta.colIndex, row.getByte(curColMeta.colIndex));
                    break;
                case ColMeta.COL_TYPE_INT:
                case ColMeta.COL_TYPE_LONG:
                case ColMeta.COL_TYPE_INT24:
                    unsafeRowWriter.write(curColMeta.colIndex, BytesTools.int2Bytes(row.getInt(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_SHORT:
                    unsafeRowWriter.write(curColMeta.colIndex, BytesTools.short2Bytes(row.getShort(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_LONGLONG:
                    unsafeRowWriter.write(curColMeta.colIndex, BytesTools.long2Bytes(row.getLong(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_FLOAT:
                    unsafeRowWriter.write(curColMeta.colIndex, BytesTools.float2Bytes(row.getFloat(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_DOUBLE:
                    unsafeRowWriter.write(curColMeta.colIndex, BytesTools.double2Bytes(row.getDouble(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_NEWDECIMAL:
                    int scale = curColMeta.decimals;
                    BigDecimal decimalVal = row.getDecimal(curColMeta.colIndex, scale);
                    unsafeRowWriter.write(curColMeta.colIndex, decimalVal.toString().getBytes());
                    break;
                default:
                    unsafeRowWriter.write(curColMeta.colIndex, row.getBinary(curColMeta.colIndex));
                    break;
            }
        } else {
            unsafeRowWriter.setNullAt(curColMeta.colIndex);
        }
    }
    value.setTotalSize(bufferHolder.totalSize());
    return value;
}

Example 3 with BufferHolder

use of io.mycat.memory.unsafe.row.BufferHolder in project Mycat-Server by MyCATApache.

the class UnsafeRowGrouper method initGroupKey.

private void initGroupKey() {
    /**
		 * 构造groupKey
		 */
    Map<String, ColMeta> groupcolMetaMap = new HashMap<String, ColMeta>(this.groupKeyfieldCount);
    groupKey = new UnsafeRow(this.groupKeyfieldCount);
    bufferHolder = new BufferHolder(groupKey, 0);
    unsafeRowWriter = new UnsafeRowWriter(bufferHolder, this.groupKeyfieldCount);
    bufferHolder.reset();
    ColMeta curColMeta = null;
    for (int i = 0; i < this.groupKeyfieldCount; i++) {
        curColMeta = this.columToIndx.get(sortColumnsByIndex[i].toUpperCase());
        groupcolMetaMap.put(sortColumnsByIndex[i], curColMeta);
        switch(curColMeta.colType) {
            case ColMeta.COL_TYPE_BIT:
                groupKey.setByte(i, (byte) 0);
                break;
            case ColMeta.COL_TYPE_INT:
            case ColMeta.COL_TYPE_INT24:
            case ColMeta.COL_TYPE_LONG:
                groupKey.setInt(i, 0);
                break;
            case ColMeta.COL_TYPE_SHORT:
                groupKey.setShort(i, (short) 0);
                break;
            case ColMeta.COL_TYPE_FLOAT:
                groupKey.setFloat(i, 0);
                break;
            case ColMeta.COL_TYPE_DOUBLE:
                groupKey.setDouble(i, 0);
                break;
            case ColMeta.COL_TYPE_NEWDECIMAL:
                //						groupKey.setDouble(i, 0);
                unsafeRowWriter.write(i, new BigDecimal(0L));
                break;
            case ColMeta.COL_TYPE_LONGLONG:
                groupKey.setLong(i, 0);
                break;
            default:
                unsafeRowWriter.write(i, "init".getBytes());
                break;
        }
    }
    groupKey.setTotalSize(bufferHolder.totalSize());
    groupKeySchema = new StructType(groupcolMetaMap, this.groupKeyfieldCount);
    groupKeySchema.setOrderCols(null);
}

Example 4 with BufferHolder

use of io.mycat.memory.unsafe.row.BufferHolder in project Mycat-Server by MyCATApache.

the class UnsafeRowGrouper method getValue.

/**
	 * 构造value
	 */
private UnsafeRow getValue(UnsafeRow row) throws UnsupportedEncodingException {
    UnsafeRow value = new UnsafeRow(this.valuefieldCount);
    bufferHolder = new BufferHolder(value, 0);
    unsafeRowWriter = new UnsafeRowWriter(bufferHolder, this.valuefieldCount);
    bufferHolder.reset();
    ColMeta curColMeta = null;
    for (Map.Entry<String, ColMeta> fieldEntry : columToIndx.entrySet()) {
        curColMeta = fieldEntry.getValue();
        if (!row.isNullAt(curColMeta.colIndex)) {
            switch(curColMeta.colType) {
                case ColMeta.COL_TYPE_BIT:
                    value.setByte(curColMeta.colIndex, row.getByte(curColMeta.colIndex));
                    break;
                case ColMeta.COL_TYPE_INT:
                case ColMeta.COL_TYPE_LONG:
                case ColMeta.COL_TYPE_INT24:
                    value.setInt(curColMeta.colIndex, BytesTools.getInt(row.getBinary(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_SHORT:
                    value.setShort(curColMeta.colIndex, BytesTools.getShort(row.getBinary(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_LONGLONG:
                    value.setLong(curColMeta.colIndex, BytesTools.getLong(row.getBinary(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_FLOAT:
                    value.setFloat(curColMeta.colIndex, BytesTools.getFloat(row.getBinary(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_DOUBLE:
                    value.setDouble(curColMeta.colIndex, BytesTools.getDouble(row.getBinary(curColMeta.colIndex)));
                    break;
                case ColMeta.COL_TYPE_NEWDECIMAL:
                    //						value.setDouble(curColMeta.colIndex, BytesTools.getDouble(row.getBinary(curColMeta.colIndex)));
                    unsafeRowWriter.write(curColMeta.colIndex, new BigDecimal(new String(row.getBinary(curColMeta.colIndex))));
                    break;
                default:
                    unsafeRowWriter.write(curColMeta.colIndex, row.getBinary(curColMeta.colIndex));
                    break;
            }
        } else {
            switch(curColMeta.colType) {
                case ColMeta.COL_TYPE_NEWDECIMAL:
                    BigDecimal nullDecimal = null;
                    unsafeRowWriter.write(curColMeta.colIndex, nullDecimal);
                    break;
                default:
                    value.setNullAt(curColMeta.colIndex);
                    break;
            }
        }
    }
    value.setTotalSize(bufferHolder.totalSize());
    return value;
}

Example 5 with BufferHolder

use of io.mycat.memory.unsafe.row.BufferHolder in project Mycat-Server by MyCATApache.

the class UnsafeRowGrouper method initEmptyValueKey.

private void initEmptyValueKey() {
    /**
		 * 构造valuerow
		 */
    emptyAggregationBuffer = new UnsafeRow(this.valuefieldCount);
    bufferHolder = new BufferHolder(emptyAggregationBuffer, 0);
    unsafeRowWriter = new UnsafeRowWriter(bufferHolder, this.valuefieldCount);
    bufferHolder.reset();
    ColMeta curColMeta = null;
    for (Map.Entry<String, ColMeta> fieldEntry : columToIndx.entrySet()) {
        curColMeta = fieldEntry.getValue();
        switch(curColMeta.colType) {
            case ColMeta.COL_TYPE_BIT:
                emptyAggregationBuffer.setByte(curColMeta.colIndex, (byte) 0);
                break;
            case ColMeta.COL_TYPE_INT:
            case ColMeta.COL_TYPE_INT24:
            case ColMeta.COL_TYPE_LONG:
                emptyAggregationBuffer.setInt(curColMeta.colIndex, 0);
                break;
            case ColMeta.COL_TYPE_SHORT:
                emptyAggregationBuffer.setShort(curColMeta.colIndex, (short) 0);
                break;
            case ColMeta.COL_TYPE_LONGLONG:
                emptyAggregationBuffer.setLong(curColMeta.colIndex, 0);
                break;
            case ColMeta.COL_TYPE_FLOAT:
                emptyAggregationBuffer.setFloat(curColMeta.colIndex, 0);
                break;
            case ColMeta.COL_TYPE_DOUBLE:
                emptyAggregationBuffer.setDouble(curColMeta.colIndex, 0);
                break;
            case ColMeta.COL_TYPE_NEWDECIMAL:
                //						emptyAggregationBuffer.setDouble(curColMeta.colIndex, 0);
                unsafeRowWriter.write(curColMeta.colIndex, new BigDecimal(0L));
                break;
            default:
                unsafeRowWriter.write(curColMeta.colIndex, "init".getBytes());
                break;
        }
    }
    emptyAggregationBuffer.setTotalSize(bufferHolder.totalSize());
    aggBufferSchema = new StructType(columToIndx, this.valuefieldCount);
    aggBufferSchema.setOrderCols(null);
}