net.sf.saffron.sql
Class SqlNode

java.lang.Object
  |
  +--net.sf.saffron.sql.SqlNode

Direct Known Subclasses:

SqlCall, SqlIdentifier, SqlLiteral, SqlNodeList

public abstract class SqlNode

extends Object

A SqlNode is a SQL parse tree. It may be an operator, literal, identifier, and so forth.

Since:

Dec 12, 2003

Version:

$Id: //open/saffron/src/net/sf/saffron/oj/xlat/SqlToOpenjavaConverter.java#7 $

Author:

jhyde

Nested Class Summary

static class

SqlNode.DatabaseMetaDataInvocationHandler Handles particular DatabaseMetaData methods; invocations of other methods will fall through to the base class, BarfingInvocationHandler, which will throw an error.

Constructor Summary

(package private)

SqlNode()

Method Summary

abstract Object	clone()
static SqlNode[]	cloneArray(SqlNode[] nodes)
private static DatabaseMetaData	dummyDatabaseMetaData()
SqlKind	getKind() Returns the type of node this is, or SqlKind.Other if it's nothing special.
boolean	isA(SqlKind kind) Returns whether this node is a particular kind.
String	toString()
String	toString(SqlDialect dialect) Returns the text of the tree of which this SqlNode is the root.
(package private) abstract void	unparse(SqlWriter writer, int leftPrec, int rightPrec) Writes a SQL representation of this node to a writer.

Methods inherited from class java.lang.Object

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

Constructor Detail

SqlNode

SqlNode()

Method Detail

clone

public abstract Object clone()

Overrides:

clone in class Object

isA

public boolean isA(SqlKind kind)

Returns whether this node is a particular kind.

Parameters:

kind - a SqlKind value

getKind

public SqlKind getKind()

Returns the type of node this is, or SqlKind.Other if it's nothing special.

Returns:

a SqlKind value, never null

cloneArray

public static SqlNode[] cloneArray(SqlNode[] nodes)

toString

public String toString()

Overrides:

toString in class Object

toString

public String toString(SqlDialect dialect)

Returns the text of the tree of which this SqlNode is the root.

unparse

abstract void unparse(SqlWriter writer,
                      int leftPrec,
                      int rightPrec)

Writes a SQL representation of this node to a writer.

dummyDatabaseMetaData

private static DatabaseMetaData dummyDatabaseMetaData()