org.modeshape.graph.query.parse
Class SqlQueryParser.SqlTokenizer

java.lang.Object
  extended by org.modeshape.graph.query.parse.SqlQueryParser.SqlTokenizer
All Implemented Interfaces:
TokenStream.Tokenizer
Enclosing class:
SqlQueryParser

public static class SqlQueryParser.SqlTokenizer
extends Object
implements TokenStream.Tokenizer

A TokenStream.Tokenizer implementation that parses words, quoted phrases, comments, and symbols. Words are delimited by whitespace and consist only of alpha-number characters plus the underscore character. Quoted phrases are delimited by single-quote and double-quote characters (which may be escaped within the quote). Comments are the characters starting with '/*' and ending with '*/', or starting with '--' and ending with the next line terminator (or the end of the content).


Field Summary
static int COMMENT
          The token type for tokens that consist of all the characters between "/*" and "*/" or between "--" and the next line terminator (e.g., '\n', '\r' or "\r\n")
static int OTHER
          The token type for tokens that consist of other characters.
static int QUOTED_STRING
          The token type for tokens that consist of all the characters within single-quotes, double-quotes, or square brackets.
static int SYMBOL
          The token type for tokens that consist of an individual "symbol" character.
static int WORD
          The token type for tokens that represent an unquoted string containing a character sequence made up of non-whitespace and non-symbol characters.
 
Constructor Summary
SqlQueryParser.SqlTokenizer(boolean useComments)
           
 
Method Summary
 void tokenize(TokenStream.CharacterStream input, TokenStream.Tokens tokens)
          Process the supplied characters and construct the appropriate TokenStream.Token objects.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

WORD

public static final int WORD
The token type for tokens that represent an unquoted string containing a character sequence made up of non-whitespace and non-symbol characters.

See Also:
Constant Field Values

SYMBOL

public static final int SYMBOL
The token type for tokens that consist of an individual "symbol" character. The set of characters includes: []<>=-+(),

See Also:
Constant Field Values

OTHER

public static final int OTHER
The token type for tokens that consist of other characters.

See Also:
Constant Field Values

QUOTED_STRING

public static final int QUOTED_STRING
The token type for tokens that consist of all the characters within single-quotes, double-quotes, or square brackets.

See Also:
Constant Field Values

COMMENT

public static final int COMMENT
The token type for tokens that consist of all the characters between "/*" and "*/" or between "--" and the next line terminator (e.g., '\n', '\r' or "\r\n")

See Also:
Constant Field Values
Constructor Detail

SqlQueryParser.SqlTokenizer

public SqlQueryParser.SqlTokenizer(boolean useComments)
Method Detail

tokenize

public void tokenize(TokenStream.CharacterStream input,
                     TokenStream.Tokens tokens)
              throws ParsingException
Process the supplied characters and construct the appropriate TokenStream.Token objects.

Specified by:
tokenize in interface TokenStream.Tokenizer
Parameters:
input - the character input stream; never null
tokens - the factory for TokenStream.Token objects, which records the order in which the tokens are created
Throws:
ParsingException - if there is an error while processing the character stream (e.g., a quote is not closed, etc.)
See Also:
org.modeshape.common.text.TokenStream.Tokenizer#tokenize(CharacterStream, Tokens)


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