opendap.servers.parsers

Class Ceparse

java.lang.Object

opendap.servers.parsers.Ceparse

All Implemented Interfaces:

ExprParserConstants

Direct Known Subclasses:

CeParser

public abstract class Ceparse
extends Object
implements ExprParserConstants

The constraint expression parser class.

Because it only makes sense to evaluate CEs when serving data, the BaseTyeFactory must create instances of the SDtype classes, not the Dtype classes. The is because we use the setRead method of the class ServerMethods when creating constants (to ensure that the evaluator doesn't try to read tem from the dataset!).

Author:

(ofExprParser.jj) jhrg, Dennis Heimbigner

Field Summary

Fields

Modifier and Type	Field and Description
protected int	cedebug

Fields inherited from interface opendap.servers.parsers.ExprParserConstants

AMPERSAND, COLON, COMMA, DEFAULT, EOF, EQUAL, FLOATCONST, FUNCTION, GREATER, GREATER_EQL, INTCONST, LBRACE, LBRACKET, LESS, LESS_EQL, LPAREN, NOT_EQUAL, operatorImage, RBRACE, RBRACKET, REGEXP, RPAREN, SEPARATOR, STRINGCONST, tokenImage, VAR, WORD

Constructor Summary

Constructors

Constructor and Description
Ceparse() **********************************************
Ceparse(BaseTypeFactory factory)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	constraint_expression(CEEvaluator ceEval, BaseTypeFactory factory, ClauseFactory clauseFactory) *********************
AST	getAST() **********************************************
List<AST>	getASTnodeset()
abstract String	getConstraint()
abstract int	getDebugLevel()
abstract String	getURL()
abstract boolean	parse() **********************************************
abstract void	setConstraint(String constraint)
abstract void	setDebugLevel(int level)
abstract void	setURL(String url)

Methods inherited from class java.lang.Object

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

Field Detail

cedebug

protected int cedebug

Constructor Detail

Ceparse

public Ceparse()

**********************************************

Ceparse

public Ceparse(BaseTypeFactory factory)

Method Detail

parse

public abstract boolean parse()
                       throws ParseException

**********************************************

Throws:

ParseException

getDebugLevel

public abstract int getDebugLevel()

setDebugLevel

public abstract void setDebugLevel(int level)

setURL

public abstract void setURL(String url)

getURL

public abstract String getURL()

setConstraint

public abstract void setConstraint(String constraint)

getConstraint

public abstract String getConstraint()

getAST

public AST getAST()

**********************************************

getASTnodeset

public List<AST> getASTnodeset()

constraint_expression

public boolean constraint_expression(CEEvaluator ceEval,
                            BaseTypeFactory factory,
                            ClauseFactory clauseFactory)
                              throws DAP2Exception,
                                     ParseException

*********************

Throws:

DAP2Exception

ParseException