Package org.basex.query

Class QueryParser

java.lang.Object

org.basex.util.InputParser

org.basex.query.QueryParser

Direct Known Subclasses:

QuerySuggest

public class QueryParser
extends InputParser

Parser for XQuery expressions.

Author:

BaseX Team 2005-21, BSD License, Christian Gruen

Field Summary

Fields

Modifier and Type	Field	Description
final TokenSet	modules	Modules loaded by the current file.
final TokenMap	namespaces	Namespaces.
final QueryContext	qc	Query context.
final StaticContext	sc	Static context.

Fields inherited from class org.basex.util.InputParser

file, input, length, mark, pos

Constructor Summary

Constructors

Constructor	Description
QueryParser(String query, String uri, QueryContext qctx, StaticContext sctx)	Constructor.

Method Summary

Modifier and Type	Method	Description
QueryException	error(QueryError error, InputInfo ii, Object... arg)	Creates the specified error.
final void	module(String path, String uri, InputInfo ii)	Parses the specified module, checking function and variable references at the end.
final LibraryModule	parseLibrary(boolean check)	Parses a library module.
final MainModule	parseMain()	Parses a main module.

Methods inherited from class org.basex.util.InputParser

consume, consume, consume, curr, curr, found, info, mark, more, next, quote, remaining

Methods inherited from class java.lang.Object

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

Field Details

modules

public final TokenSet modules

Modules loaded by the current file.

namespaces

public final TokenMap namespaces

Namespaces.

qc

public final QueryContext qc

Query context.

sc

public final StaticContext sc

Static context.

Constructor Details

QueryParser

public QueryParser(String query,
 String uri,
 QueryContext qctx,
 StaticContext sctx)

Constructor.

Parameters:

query - query string

uri - base URI (can be null; only passed on if not bound to static context yet)

qctx - query context

sctx - static context (can be null)

Method Details

parseMain

public final MainModule parseMain()
                           throws QueryException

Parses a main module. Parses the "MainModule" rule. Parses the "Setter" rule. Parses the "QueryBody (= Expr)" rule.

Returns:

resulting root expression

Throws:

QueryException - query exception

parseLibrary

public final LibraryModule parseLibrary(boolean check)
                                 throws QueryException

Parses a library module. Parses the "ModuleDecl" rule.

Parameters:

check - check functions and variables

Returns:

name of the module

Throws:

QueryException - query exception

module

public final void module(String path,
 String uri,
 InputInfo ii)
                  throws QueryException

Parses the specified module, checking function and variable references at the end.

Parameters:

path - file path

uri - base URI of module

ii - input info

Throws:

QueryException - query exception

error

public QueryException error(QueryError error,
 InputInfo ii,
 Object... arg)

Creates the specified error.

Parameters:

error - error to be thrown

ii - input info

arg - error arguments

Returns:

error