程序包 org.apache.iotdb.db.utils

类 QueryDataSetUtils

  • public class QueryDataSetUtils
extends java.lang.Object
    TimeValuePairUtils to convert between thrift format and TsFile format.

    • 方法概要

      所有方法 静态方法 具体方法 
      修饰符和类型 方法 说明
      static org.apache.iotdb.service.rpc.thrift.TSQueryDataSet convertQueryDataSetByFetchSize​(org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet queryDataSet, int fetchSize, WatermarkEncoder watermarkEncoder)  
      static org.apache.iotdb.tsfile.utils.Pair<java.util.List<java.nio.ByteBuffer>,​java.lang.Boolean> convertQueryResultByFetchSize​(IQueryExecution queryExecution, int fetchSize)
      pair.left is serialized TsBlock pair.right indicates if the query finished
      static org.apache.iotdb.tsfile.utils.Pair<org.apache.iotdb.service.rpc.thrift.TSQueryDataSet,​java.lang.Boolean> convertTsBlockByFetchSize​(IQueryExecution queryExecution, int fetchSize)  
      static org.apache.iotdb.tsfile.utils.BitMap[] readBitMapsFromBuffer​(java.nio.ByteBuffer buffer, int columns, int size)  
      static org.apache.iotdb.tsfile.utils.BitMap[] readBitMapsFromStream​(java.io.DataInputStream stream, int columns, int size)  
      static java.lang.Object[] readTabletValuesFromBuffer​(java.nio.ByteBuffer buffer, java.util.List<java.lang.Integer> types, int columns, int size)  
      static java.lang.Object[] readTabletValuesFromBuffer​(java.nio.ByteBuffer buffer, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] types, int columns, int size)  
      static java.lang.Object[] readTabletValuesFromStream​(java.io.DataInputStream stream, java.util.List<java.lang.Integer> types, int columns, int size)  
      static java.lang.Object[] readTabletValuesFromStream​(java.io.DataInputStream stream, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] types, int columns, int size)  
      static long[] readTimesFromBuffer​(java.nio.ByteBuffer buffer, int size)  
      static long[] readTimesFromStream​(java.io.DataInputStream stream, int size)  

      • 从类继承的方法 java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • 方法详细资料

      • convertQueryDataSetByFetchSize

        public static org.apache.iotdb.service.rpc.thrift.TSQueryDataSet convertQueryDataSetByFetchSize​(org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet queryDataSet,
                                                                                                int fetchSize,
                                                                                                WatermarkEncoder watermarkEncoder)
                                                                                         throws java.io.IOException
        抛出:
        java.io.IOException

      • convertTsBlockByFetchSize

        public static org.apache.iotdb.tsfile.utils.Pair<org.apache.iotdb.service.rpc.thrift.TSQueryDataSet,​java.lang.Boolean> convertTsBlockByFetchSize​(IQueryExecution queryExecution,
                                                                                                                                                       int fetchSize)
                                                                                                                                                throws java.io.IOException,
                                                                                                                                                       org.apache.iotdb.commons.exception.IoTDBException
        抛出:
        java.io.IOException
        org.apache.iotdb.commons.exception.IoTDBException

      • convertQueryResultByFetchSize

        public static org.apache.iotdb.tsfile.utils.Pair<java.util.List<java.nio.ByteBuffer>,​java.lang.Boolean> convertQueryResultByFetchSize​(IQueryExecution queryExecution,
                                                                                                                                            int fetchSize)
                                                                                                                                     throws org.apache.iotdb.commons.exception.IoTDBException
        pair.left is serialized TsBlock pair.right indicates if the query finished
        抛出:
        org.apache.iotdb.commons.exception.IoTDBException

      • readTimesFromBuffer

        public static long[] readTimesFromBuffer​(java.nio.ByteBuffer buffer,
                                         int size)

      • readTimesFromStream

        public static long[] readTimesFromStream​(java.io.DataInputStream stream,
                                         int size)
                                  throws java.io.IOException
        抛出:
        java.io.IOException

      • readBitMapsFromBuffer

        public static org.apache.iotdb.tsfile.utils.BitMap[] readBitMapsFromBuffer​(java.nio.ByteBuffer buffer,
                                                                           int columns,
                                                                           int size)

      • readBitMapsFromStream

        public static org.apache.iotdb.tsfile.utils.BitMap[] readBitMapsFromStream​(java.io.DataInputStream stream,
                                                                           int columns,
                                                                           int size)
                                                                    throws java.io.IOException
        抛出:
        java.io.IOException

      • readTabletValuesFromBuffer

        public static java.lang.Object[] readTabletValuesFromBuffer​(java.nio.ByteBuffer buffer,
                                                            java.util.List<java.lang.Integer> types,
                                                            int columns,
                                                            int size)

      • readTabletValuesFromStream

        public static java.lang.Object[] readTabletValuesFromStream​(java.io.DataInputStream stream,
                                                            java.util.List<java.lang.Integer> types,
                                                            int columns,
                                                            int size)
                                                     throws java.io.IOException
        抛出:
        java.io.IOException

      • readTabletValuesFromBuffer

        public static java.lang.Object[] readTabletValuesFromBuffer​(java.nio.ByteBuffer buffer,
                                                            org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] types,
                                                            int columns,
                                                            int size)
        参数:
        buffer - data values
        columns - column number
        size - value count in each column

      • readTabletValuesFromStream

        public static java.lang.Object[] readTabletValuesFromStream​(java.io.DataInputStream stream,
                                                            org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] types,
                                                            int columns,
                                                            int size)
                                                     throws java.io.IOException
        抛出:
        java.io.IOException