org.apache.calcite.prepare

Class LixToRelTranslator

java.lang.Object

org.apache.calcite.prepare.LixToRelTranslator

All Implemented Interfaces:

RelOptTable.ToRelContext, RelOptTable.ViewExpander

class LixToRelTranslator
extends Object
implements RelOptTable.ToRelContext

Translates a tree of linq4j Queryable nodes to a tree of RelNode planner nodes.

See Also:

QueryableRelBuilder

Field Summary

Fields

Modifier and Type	Field and Description
(package private) RelOptCluster	cluster
private Prepare	preparingStmt
(package private) JavaTypeFactory	typeFactory

Constructor Summary

Constructors

Constructor and Description
LixToRelTranslator(RelOptCluster cluster, Prepare preparingStmt)

Method Summary

Modifier and Type	Method and Description
RelRoot	expandView(RelDataType rowType, String queryString, List<String> schemaPath, List<String> viewPath) Returns a relational expression that is to be substituted for an access to a SQL view.
(package private) List<Expression>	fieldExpressions(Expression expression)
RelOptCluster	getCluster()
(package private) RexNode	toRex(FunctionExpression expression, RelNode... inputs)
private List<RexNode>	toRex(RelNode child, FunctionExpression expression)
(package private) List<RexNode>	toRexList(FunctionExpression expression, RelNode... inputs)
RelNode	translate(Expression expression)
<T> RelNode	translate(Queryable<T> queryable)

Methods inherited from class java.lang.Object

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

Field Detail

cluster

final RelOptCluster cluster

preparingStmt

private final Prepare preparingStmt

typeFactory

final JavaTypeFactory typeFactory

Constructor Detail

LixToRelTranslator

LixToRelTranslator(RelOptCluster cluster,
                   Prepare preparingStmt)

Method Detail

getCluster

public RelOptCluster getCluster()

Specified by:

getCluster in interface RelOptTable.ToRelContext

expandView

public RelRoot expandView(RelDataType rowType,
                          String queryString,
                          List<String> schemaPath,
                          List<String> viewPath)

Description copied from interface: RelOptTable.ViewExpander

Returns a relational expression that is to be substituted for an access to a SQL view.

Specified by:

expandView in interface RelOptTable.ViewExpander

Parameters:

rowType - Row type of the view

queryString - Body of the view

schemaPath - Path of a schema wherein to find referenced tables

viewPath - Path of the view, ending with its name; may be null

Returns:

Relational expression

translate

public <T> RelNode translate(Queryable<T> queryable)

translate

public RelNode translate(Expression expression)

toRex

private List<RexNode> toRex(RelNode child,
                            FunctionExpression expression)

fieldExpressions

List<Expression> fieldExpressions(Expression expression)

toRexList

List<RexNode> toRexList(FunctionExpression expression,
                        RelNode... inputs)

toRex

RexNode toRex(FunctionExpression expression,
              RelNode... inputs)