saffron.util
Class SqlToOpenjavaConverter

java.lang.Object
  |
  +--saffron.util.SqlToOpenjavaConverter

public class SqlToOpenjavaConverter

extends Object

A SqlToOpenjavaConverter converts a tree of SqlNodes a ParseTree tree.

Since:

Mar 19, 2003

Version:

$Id: //open/saffron/src/main/saffron/util/SqlToOpenjavaConverter.java#4 $

Author:

jhyde

Nested Class Summary

static class	SqlToOpenjavaConverter.SchemaCatalogReader A SchemaCatalogReader looks up catalog information from a saffron schema object.
(package private) static class	SqlToOpenjavaConverter.TestContext

Field Summary

private static HashMap	binaryMap
private static SqlToOpenjavaConverter.TestContext	testContext
private SqlValidator	validator

Constructor Summary

(package private)	SqlToOpenjavaConverter()
	SqlToOpenjavaConverter(SqlNode query, SqlValidator.CatalogReader catalogReader)

Method Summary

private void	check(TestCase test, String s)
private Expression	convertExpression(SqlValidator.Scope scope, SqlNode node)
private Expression	convertFrom(SqlValidator.Scope scope, SqlNode from)
private ExpressionList	convertGroup(SqlValidator.Scope scope, SqlNodeList groupList)
private Expression	convertIdentifier(SqlValidator.Scope scope, SqlIdentifier identifier) Converts an identifier into an expression in a given scope.
private static int	convertJoinType(int joinType)
private Expression	convertLiteral(SqlLiteral literal)
private ExpressionList	convertOrder(SqlValidator.Scope scope, SqlNodeList orderList)
Expression	convertQuery(SqlNode query)
Expression	convertSelect(SqlSelect query)
private ExpressionList	convertSelectList(SqlValidator.SelectScope scope, SqlNodeList selectList)
private static HashMap	createBinaryMap()
private SqlToOpenjavaConverter.TestContext	getTestContext()
private void	init(SqlNode query, SqlValidator.CatalogReader catalogReader)
static Test	suite() Standard method recognised by JUnit.
void	testConvert(TestCase test)
void	testOrder(TestCase test)

Methods inherited from class java.lang.Object

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

Field Detail

validator

private SqlValidator validator

testContext

private static SqlToOpenjavaConverter.TestContext testContext

binaryMap

private static final HashMap binaryMap

Constructor Detail

SqlToOpenjavaConverter

SqlToOpenjavaConverter()

SqlToOpenjavaConverter

public SqlToOpenjavaConverter(SqlNode query,
                              SqlValidator.CatalogReader catalogReader)

Method Detail

init

private void init(SqlNode query,
                  SqlValidator.CatalogReader catalogReader)

convertQuery

public Expression convertQuery(SqlNode query)

convertSelect

public Expression convertSelect(SqlSelect query)

convertOrder

private ExpressionList convertOrder(SqlValidator.Scope scope,
                                    SqlNodeList orderList)

testOrder

public void testOrder(TestCase test)

check

private void check(TestCase test,
                   String s)

getTestContext

private SqlToOpenjavaConverter.TestContext getTestContext()

convertExpression

private Expression convertExpression(SqlValidator.Scope scope,
                                     SqlNode node)

createBinaryMap

private static HashMap createBinaryMap()

convertIdentifier

private Expression convertIdentifier(SqlValidator.Scope scope,
                                     SqlIdentifier identifier)

Converts an identifier into an expression in a given scope. For example, the "empno" in "select empno from emp join dept" becomes "emp.empno".

convertLiteral

private Expression convertLiteral(SqlLiteral literal)

testConvert

public void testConvert(TestCase test)

convertFrom

private Expression convertFrom(SqlValidator.Scope scope,
                               SqlNode from)

convertJoinType

private static int convertJoinType(int joinType)

convertGroup

private ExpressionList convertGroup(SqlValidator.Scope scope,
                                    SqlNodeList groupList)

convertSelectList

private ExpressionList convertSelectList(SqlValidator.SelectScope scope,
                                         SqlNodeList selectList)

suite

public static Test suite()

Standard method recognised by JUnit.