org.histpop.ohpr.frames.keywordparser
Class KeywordParser

java.lang.Object
  java_cup.runtime.lr_parser
      org.histpop.ohpr.frames.keywordparser.KeywordParser

public class KeywordParser
extends java_cup.runtime.lr_parser

CUP v0.10k generated parser.

Version:

Tue Feb 06 17:13:39 GMT 2007

Field Summary

protected static short[][]	_action_table Parse-action table.
protected static short[][]	_production_table Production table.
protected static short[][]	_reduce_table reduce_goto table.
protected org.histpop.ohpr.frames.keywordparser.CUP$KeywordParser$actions	action_obj Instance of action encapsulation class.
static java.lang.String	DEFAULT_EXPRESSION_KIND
static java.lang.String	EXPRESSION_KIND_ALL
static java.lang.String	EXPRESSION_KIND_ANY
static java.lang.String	EXPRESSION_KIND_BOOLEAN
static java.lang.String	EXPRESSION_KIND_EXACT

Fields inherited from class java_cup.runtime.lr_parser

_done_parsing, _error_sync_size, action_tab, cur_token, lookahead, lookahead_pos, production_tab, reduce_tab, stack, tos

Constructor Summary

KeywordParser()
Default constructor.

KeywordParser(java_cup.runtime.Scanner s)
Constructor which sets the default scanner.

Method Summary

short[][]	action_table() Access to parse-action table.
static java.lang.String	compile(java.lang.String searchTerms, java.lang.String expressionKind, java.lang.String field, boolean simpleSearch) Parse the search terms and generate and SQL expression.
java_cup.runtime.Symbol	do_action(int act_num, java_cup.runtime.lr_parser parser, java.util.Stack stack, int top) Invoke a user supplied parse action.
int	EOF_sym() EOF Symbol index.
int	error_sym() error Symbol index.
protected java.util.Vector	getFoundStopWords() Get the stopwords found in the search terms
protected void	init_actions() Action encapsulation object initializer.
static java.util.Hashtable	loadStopWords() Load the MySQL stopwords.
short[][]	production_table() Access to production table.
short[][]	reduce_table() Access to reduce_goto table.
java_cup.runtime.Symbol	scan() Scan to get the next Symbol.
protected void	setExpressionKind(java.lang.String expressionKind) Set the 'expressionKind' property to modify this parser.
protected void	setField(java.lang.String field) Set the list of SQL field names
int	start_production() Indicates start production.
int	start_state() Indicates start state.
void	user_init() User initialization code.

Methods inherited from class java_cup.runtime.lr_parser

advance_lookahead, cur_err_token, debug_message, debug_parse, debug_reduce, debug_shift, debug_stack, done_parsing, dump_stack, error_recovery, error_sync_size, find_recovery_config, get_action, get_reduce, getScanner, parse_lookahead, parse, read_lookahead, report_error, report_fatal_error, restart_lookahead, setScanner, shift_under_error, syntax_error, try_parse_ahead, unpackFromStrings, unrecovered_syntax_error

Methods inherited from class java.lang.Object

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

Field Detail

_production_table

protected static final short[][] _production_table

Production table.

_action_table

protected static final short[][] _action_table

Parse-action table.

_reduce_table

protected static final short[][] _reduce_table

reduce_goto table.

action_obj

protected org.histpop.ohpr.frames.keywordparser.CUP$KeywordParser$actions action_obj

Instance of action encapsulation class.

EXPRESSION_KIND_ALL

public static final java.lang.String EXPRESSION_KIND_ALL

See Also:

Constant Field Values

EXPRESSION_KIND_ANY

public static final java.lang.String EXPRESSION_KIND_ANY

See Also:

Constant Field Values

EXPRESSION_KIND_EXACT

public static final java.lang.String EXPRESSION_KIND_EXACT

See Also:

Constant Field Values

EXPRESSION_KIND_BOOLEAN

public static final java.lang.String EXPRESSION_KIND_BOOLEAN

See Also:

Constant Field Values

DEFAULT_EXPRESSION_KIND

public static final java.lang.String DEFAULT_EXPRESSION_KIND

See Also:

Constant Field Values

Constructor Detail

KeywordParser

public KeywordParser()

Default constructor.

KeywordParser

public KeywordParser(java_cup.runtime.Scanner s)

Constructor which sets the default scanner.

Method Detail

production_table

public short[][] production_table()

Access to production table.

Specified by:

production_table in class java_cup.runtime.lr_parser

action_table

public short[][] action_table()

Access to parse-action table.

Specified by:

action_table in class java_cup.runtime.lr_parser

reduce_table

public short[][] reduce_table()

Access to reduce_goto table.

Specified by:

reduce_table in class java_cup.runtime.lr_parser

init_actions

protected void init_actions()

Action encapsulation object initializer.

Specified by:

init_actions in class java_cup.runtime.lr_parser

do_action

public java_cup.runtime.Symbol do_action(int act_num,
                                         java_cup.runtime.lr_parser parser,
                                         java.util.Stack stack,
                                         int top)
                                  throws java.lang.Exception

Invoke a user supplied parse action.

Specified by:

do_action in class java_cup.runtime.lr_parser

Throws:

java.lang.Exception

start_state

public int start_state()

Indicates start state.

Specified by:

start_state in class java_cup.runtime.lr_parser

start_production

public int start_production()

Indicates start production.

Specified by:

start_production in class java_cup.runtime.lr_parser

EOF_sym

public int EOF_sym()

EOF Symbol index.

Specified by:

EOF_sym in class java_cup.runtime.lr_parser

error_sym

public int error_sym()

error Symbol index.

Specified by:

error_sym in class java_cup.runtime.lr_parser

user_init

public void user_init()
               throws java.lang.Exception

User initialization code.

Overrides:

user_init in class java_cup.runtime.lr_parser

Throws:

java.lang.Exception

scan

public java_cup.runtime.Symbol scan()
                             throws java.lang.Exception

Scan to get the next Symbol.

Overrides:

scan in class java_cup.runtime.lr_parser

Throws:

java.lang.Exception

loadStopWords

public static java.util.Hashtable loadStopWords()

Load the MySQL stopwords.

setExpressionKind

protected void setExpressionKind(java.lang.String expressionKind)

Set the 'expressionKind' property to modify this parser.

Parameters:

expressionKind - One of All or Any or Boolean or Exact. This determines what Boolean operator to use for the space separators.

setField

protected void setField(java.lang.String field)

Set the list of SQL field names

getFoundStopWords

protected java.util.Vector getFoundStopWords()

Get the stopwords found in the search terms

compile

public static java.lang.String compile(java.lang.String searchTerms,
                                       java.lang.String expressionKind,
                                       java.lang.String field,
                                       boolean simpleSearch)
                                throws ServerException

Parse the search terms and generate and SQL expression.

Parameters:

searchTerms - The search terms to be parsed.

expressionKind - One of All or Any or Boolean or Exact. This determines what Boolean operator to use for the space separators.

field - A field name which is to be used in the generated search expression. If field==null then return the interpreted search terms string.

simpleSearch - True if called from a simple search form, false otherwise.

Returns:

A SQL expression for querying various DB fields with the given search terms, or a Boolean search terms expression as interpreted by this parser.

Throws:

ServerException