org.apache.flink.table.planner.expressions

Class DeclarativeExpressionResolver

java.lang.Object

org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.apache.flink.table.expressions.ResolvedExpression>

org.apache.flink.table.planner.expressions.DeclarativeExpressionResolver

All Implemented Interfaces:

org.apache.flink.table.expressions.ExpressionVisitor<org.apache.flink.table.expressions.ResolvedExpression>

public abstract class DeclarativeExpressionResolver
extends org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.apache.flink.table.expressions.ResolvedExpression>

Abstract class to resolve the expressions in DeclarativeAggregateFunction.

Constructor Summary

Constructors

Constructor and Description
DeclarativeExpressionResolver(org.apache.calcite.tools.RelBuilder relBuilder, DeclarativeAggregateFunction function, boolean isMerge)

Method Summary

Modifier and Type	Method and Description
protected org.apache.flink.table.expressions.ResolvedExpression	defaultMethod(org.apache.flink.table.expressions.Expression expression)
abstract org.apache.flink.table.expressions.ResolvedExpression	toAccInputExpr(String name, int localIndex) When accumulate phase, for inputs.
abstract org.apache.flink.table.expressions.ResolvedExpression	toAggBufferExpr(String name, int localIndex) For aggregate buffer.
abstract org.apache.flink.table.expressions.ResolvedExpression	toMergeInputExpr(String name, int localIndex) When merge phase, for inputs.
static org.apache.flink.table.expressions.ResolvedExpression	toRexDistinctKey(org.apache.calcite.tools.RelBuilder builder, String name, org.apache.flink.table.types.logical.LogicalType t)
static org.apache.flink.table.expressions.ResolvedExpression	toRexInputRef(org.apache.calcite.tools.RelBuilder builder, int i, org.apache.flink.table.types.logical.LogicalType t)

Methods inherited from class org.apache.flink.table.expressions.ExpressionDefaultVisitor

visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

DeclarativeExpressionResolver

public DeclarativeExpressionResolver(org.apache.calcite.tools.RelBuilder relBuilder,
                                     DeclarativeAggregateFunction function,
                                     boolean isMerge)

Method Detail

defaultMethod

protected org.apache.flink.table.expressions.ResolvedExpression defaultMethod(org.apache.flink.table.expressions.Expression expression)

Specified by:

defaultMethod in class org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.apache.flink.table.expressions.ResolvedExpression>

toMergeInputExpr

public abstract org.apache.flink.table.expressions.ResolvedExpression toMergeInputExpr(String name,
                                                                                       int localIndex)

When merge phase, for inputs.

toAccInputExpr

public abstract org.apache.flink.table.expressions.ResolvedExpression toAccInputExpr(String name,
                                                                                     int localIndex)

When accumulate phase, for inputs.

toAggBufferExpr

public abstract org.apache.flink.table.expressions.ResolvedExpression toAggBufferExpr(String name,
                                                                                      int localIndex)

For aggregate buffer.

toRexInputRef

public static org.apache.flink.table.expressions.ResolvedExpression toRexInputRef(org.apache.calcite.tools.RelBuilder builder,
                                                                                  int i,
                                                                                  org.apache.flink.table.types.logical.LogicalType t)

toRexDistinctKey

public static org.apache.flink.table.expressions.ResolvedExpression toRexDistinctKey(org.apache.calcite.tools.RelBuilder builder,
                                                                                     String name,
                                                                                     org.apache.flink.table.types.logical.LogicalType t)