org.apache.calcite.rex

Interface RexToSqlNodeConverter

All Known Implementing Classes:

RexToSqlNodeConverterImpl

public interface RexToSqlNodeConverter

Converts expressions from RexNode to SqlNode.

For most purposes, SqlImplementor is superior. See in particular SqlImplementor.Context.toSql(RexProgram, RexNode).

Method Summary

Modifier and Type	Method and Description
@Nullable SqlNode	convertCall(RexCall call) Converts a RexCall to a SqlNode expression.
@Nullable SqlNode	convertInputRef(RexInputRef ref) Converts a RexInputRef to a SqlIdentifier.
@Nullable SqlNode	convertLiteral(RexLiteral literal) Converts a RexLiteral to a SqlLiteral.
@Nullable SqlNode	convertNode(RexNode node) Converts a RexNode to a SqlNode expression, typically by dispatching to one of the other interface methods.

Method Detail

convertNode

@Nullable SqlNode convertNode(RexNode node)

Converts a RexNode to a SqlNode expression, typically by dispatching to one of the other interface methods.

Parameters:

node - RexNode to translate

Returns:

SqlNode, or null if no translation was available

convertCall

@Nullable SqlNode convertCall(RexCall call)

Converts a RexCall to a SqlNode expression.

Parameters:

call - RexCall to translate

Returns:

SqlNode, or null if no translation was available

convertLiteral

@Nullable SqlNode convertLiteral(RexLiteral literal)

Converts a RexLiteral to a SqlLiteral.

Parameters:

literal - RexLiteral to translate

Returns:

SqlNode, or null if no translation was available

convertInputRef

@Nullable SqlNode convertInputRef(RexInputRef ref)

Converts a RexInputRef to a SqlIdentifier.

Parameters:

ref - RexInputRef to translate

Returns:

SqlNode, or null if no translation was available