com.sun.jdo.spi.persistence.support.ejb.ejbqlc

Class EJBQLAST

java.lang.Object

antlr.BaseAST

antlr.CommonAST

com.sun.jdo.spi.persistence.support.ejb.ejbqlc.EJBQLAST

All Implemented Interfaces:

antlr.collections.AST, Serializable, Cloneable

public class EJBQLAST
extends antlr.CommonAST
implements Cloneable

An instance of this class represents a node of the intermediate representation (AST) used by the query compiler. It stores per node:

• token type info
• token text
• line info
• column info
• type info the semantic analysis calculates the type of an expression and adds this info to each node.

Author:

Michael Bouschen

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	column The column info
protected int	line The line info
protected Object	typeInfo The type info

Fields inherited from class antlr.BaseAST

down, right

Constructor Summary

Constructors

Constructor and Description
EJBQLAST() No args constructor.
EJBQLAST(EJBQLAST ast) Copy constructor.
EJBQLAST(int type, String text, Object typeInfo) Constructor taking token type, text and type info.

Method Summary

Modifier and Type	Method and Description
protected Object	clone() Creates and returns a copy of this object.
int	getColumn()
int	getLine()
String	getTreeRepr(String title) Returns a full string representation of this JQLAST.
Object	getTypeInfo()
void	initialize(antlr.collections.AST _ast)
void	initialize(int type, String text, Object typeInfo)
void	initialize(antlr.Token t)
void	setColumn(int column)
void	setLine(int line)
void	setTypeInfo(Object typeInfo)
String	toString() Returns a string representation of this EJBQLAST w/o child ast nodes.

Methods inherited from class antlr.CommonAST

getText, getType, initialize, setText, setType

Methods inherited from class antlr.BaseAST

addChild, decode, encode, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, getNumberOfChildren, getTokenNames, removeChildren, setFirstChild, setNextSibling, setVerboseStringConversion, toStringList, toStringTree, xmlSerialize, xmlSerializeNode, xmlSerializeRootClose, xmlSerializeRootOpen

Methods inherited from class java.lang.Object

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

Field Detail

line

protected int line

The line info

column

protected int column

The column info

typeInfo

protected transient Object typeInfo

The type info

Constructor Detail

EJBQLAST

public EJBQLAST()

No args constructor.

EJBQLAST

public EJBQLAST(int type,
                String text,
                Object typeInfo)

Constructor taking token type, text and type info.

EJBQLAST

public EJBQLAST(EJBQLAST ast)

Copy constructor.

Method Detail

initialize

public void initialize(antlr.Token t)

Specified by:

initialize in interface antlr.collections.AST

Overrides:

initialize in class antlr.CommonAST

initialize

public void initialize(int type,
                       String text,
                       Object typeInfo)

initialize

public void initialize(antlr.collections.AST _ast)

Specified by:

initialize in interface antlr.collections.AST

Overrides:

initialize in class antlr.CommonAST

setLine

public void setLine(int line)

getLine

public int getLine()

Specified by:

getLine in interface antlr.collections.AST

Overrides:

getLine in class antlr.BaseAST

setColumn

public void setColumn(int column)

getColumn

public int getColumn()

Specified by:

getColumn in interface antlr.collections.AST

Overrides:

getColumn in class antlr.BaseAST

setTypeInfo

public void setTypeInfo(Object typeInfo)

getTypeInfo

public Object getTypeInfo()

toString

public String toString()

Returns a string representation of this EJBQLAST w/o child ast nodes.

Specified by:

toString in interface antlr.collections.AST

Overrides:

toString in class antlr.BaseAST

Returns:

a string representation of the object.

getTreeRepr

public String getTreeRepr(String title)

Returns a full string representation of this JQLAST. The returned string starts with the specified title string, followed by the string representation of this ast, followed by the string representation of the child ast nodes of this ast. The method dumps each ast node on a separate line. Child ast nodes are indented. The method calls toString to dump a single node w/o children.

Returns:

string representation of this ast including children.

clone

protected Object clone()
                throws CloneNotSupportedException

Creates and returns a copy of this object. The returned EJBQLAST shares the same state as this object, meaning the fields type, text, line, column, and typeInfo have the same values. But it is not bound to any tree structure, thus the child is null and the sibling is null.

Overrides:

clone in class Object

Returns:

a clone of this instance.

Throws:

CloneNotSupportedException