org.apache.calcite.sql2rel

Class SqlNodeToRexConverterImpl

java.lang.Object

org.apache.calcite.sql2rel.SqlNodeToRexConverterImpl

All Implemented Interfaces:

SqlNodeToRexConverter

public class SqlNodeToRexConverterImpl
extends Object
implements SqlNodeToRexConverter

Standard implementation of SqlNodeToRexConverter.

Method Summary

Methods

Modifier and Type	Method and Description
RexNode	convertCall(SqlRexContext cx, SqlCall call) Converts a SqlCall to a RexNode expression.
RexLiteral	convertInterval(SqlRexContext cx, SqlIntervalQualifier intervalQualifier) Converts a SQL Interval Qualifier to a REX literal.
RexNode	convertLiteral(SqlRexContext cx, SqlLiteral literal) Converts a SQL literal to a REX literal.

Methods inherited from class java.lang.Object

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

Method Detail

convertCall

public RexNode convertCall(SqlRexContext cx,
                  SqlCall call)

Description copied from interface: SqlNodeToRexConverter

Converts a SqlCall to a RexNode expression.

Specified by:

convertCall in interface SqlNodeToRexConverter

convertInterval

public RexLiteral convertInterval(SqlRexContext cx,
                         SqlIntervalQualifier intervalQualifier)

Description copied from interface: SqlNodeToRexConverter

Converts a SQL Interval Qualifier to a REX literal.

Specified by:

convertInterval in interface SqlNodeToRexConverter

convertLiteral

public RexNode convertLiteral(SqlRexContext cx,
                     SqlLiteral literal)

Description copied from interface: SqlNodeToRexConverter

Converts a SQL literal to a REX literal.

The result is RexNode, not RexLiteral because if the literal is NULL (or the boolean Unknown value), we make a CAST(NULL AS type) expression.

Specified by:

convertLiteral in interface SqlNodeToRexConverter