org.apache.calcite.rel.rel2sql

Class SqlImplementor.Context

java.lang.Object

org.apache.calcite.rel.rel2sql.SqlImplementor.Context

Direct Known Subclasses:

SqlImplementor.AliasContext, SqlImplementor.JoinContext

Enclosing class:

SqlImplementor

public abstract class SqlImplementor.Context
extends Object

Context for translating a RexNode expression (within a RelNode) into a SqlNode expression (within a SQL parse tree).

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	fieldCount
private boolean	ignoreCast

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Context(int fieldCount)
protected	Context(int fieldCount, boolean ignoreCast)

Method Summary

Modifier and Type	Method and Description
private SqlNode	createLeftCall(SqlOperator op, List<SqlNode> nodeList)
private SqlNode	createSqlWindowBound(RexWindowBound rexWindowBound)
abstract SqlNode	field(int ordinal)
List<SqlNode>	fieldList()
SqlImplementor	implementor()
SqlNode	toSql(AggregateCall aggCall) Converts a call to an aggregate function to an expression.
SqlNode	toSql(RelFieldCollation collation) Converts a collation to an ORDER BY item.
private List<SqlNode>	toSql(RexProgram program, List<RexNode> operandList)
private SqlNode	toSql(RexProgram program, RexFieldCollation rfc)
SqlNode	toSql(RexProgram program, RexNode rex) Converts an expression from RexNode to SqlNode format.
private SqlCall	toSql(RexProgram program, RexOver rexOver)

Methods inherited from class java.lang.Object

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

Field Detail

fieldCount

final int fieldCount

ignoreCast

private final boolean ignoreCast

Constructor Detail

Context

protected Context(int fieldCount)

Context

protected Context(int fieldCount,
                  boolean ignoreCast)

Method Detail

field

public abstract SqlNode field(int ordinal)

toSql

public SqlNode toSql(RexProgram program,
                     RexNode rex)

Converts an expression from RexNode to SqlNode format.

Parameters:

program - Required only if rex contains RexLocalRef

rex - Expression to convert

toSql

private SqlCall toSql(RexProgram program,
                      RexOver rexOver)

toSql

private SqlNode toSql(RexProgram program,
                      RexFieldCollation rfc)

createSqlWindowBound

private SqlNode createSqlWindowBound(RexWindowBound rexWindowBound)

createLeftCall

private SqlNode createLeftCall(SqlOperator op,
                               List<SqlNode> nodeList)

toSql

private List<SqlNode> toSql(RexProgram program,
                            List<RexNode> operandList)

fieldList

public List<SqlNode> fieldList()

toSql

public SqlNode toSql(AggregateCall aggCall)

Converts a call to an aggregate function to an expression.

toSql

public SqlNode toSql(RelFieldCollation collation)

Converts a collation to an ORDER BY item.

implementor

public SqlImplementor implementor()