Package org.apache.flink.table.planner.functions.sql

Class SqlHopTableFunction

java.lang.Object
org.apache.calcite.sql.SqlOperator
org.apache.calcite.sql.SqlFunction
org.apache.calcite.sql.SqlWindowTableFunction
org.apache.flink.table.planner.functions.sql.SqlWindowTableFunction
org.apache.flink.table.planner.functions.sql.SqlHopTableFunction
All Implemented Interfaces:
org.apache.calcite.sql.SqlTableFunction
public class SqlHopTableFunction extends SqlWindowTableFunction
SqlHopTableFunction implements an operator for hopping.

It allows four parameters:

  1. a table
  2. a descriptor to provide a time attribute column name from the input table
  3. an interval parameter to specify the length of window shifting
  4. an interval parameter to specify the length of window size

  • Nested Class Summary

    Nested classes/interfaces inherited from class org.apache.flink.table.planner.functions.sql.SqlWindowTableFunction

    SqlWindowTableFunction.AbstractOperandMetadata

  • Field Summary

    Fields inherited from class org.apache.flink.table.planner.functions.sql.SqlWindowTableFunction

    ARG0_TABLE_FUNCTION_WINDOWING, GAP, PARAM_STEP

    Fields inherited from class org.apache.calcite.sql.SqlWindowTableFunction

    PARAM_DATA, PARAM_KEY, PARAM_OFFSET, PARAM_SIZE, PARAM_SLIDE, PARAM_TIMECOL

    Fields inherited from class org.apache.calcite.sql.SqlOperator

    kind, MDX_PRECEDENCE, NL

  • Constructor Summary

    Constructors
    Constructor
    Description
    SqlHopTableFunction()
     

  • Method Summary

    Methods inherited from class org.apache.flink.table.planner.functions.sql.SqlWindowTableFunction

    argumentMustBeScalar, getOperandTypeChecker, getRowTypeInference, inferRowType, validateCall

    Methods inherited from class org.apache.calcite.sql.SqlFunction

    deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, getSyntax, isQuantifierAllowed, unparse, validateQuantifier

    Methods inherited from class org.apache.calcite.sql.SqlOperator

    acceptCall, acceptCall, adjustType, allowsFraming, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, createCall, createCall, createCall, deriveOperandType, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, not, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, reverse, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface org.apache.calcite.sql.SqlTableFunction

    tableCharacteristic

  • Constructor Details

    • SqlHopTableFunction

      public SqlHopTableFunction()