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Class Zql.ZqlParser

java.lang.Object
   |
   +----Zql.ZqlParser

public class ZqlParser

extends Object

ZqlParser()

Create a new parser: before use, call initParser(InputStream) to specify an input stream for the parsing.

ZqlParser(InputStream)

Create a new parser to parse SQL statements from a given input stream.

initParser(InputStream)

Initialize (or re-initialize) the input stream for the parser.

main(String[])

Test program: Parses SQL statements from stdin or from a text file.
If the program receives one argument, it is an SQL text file name; if there's no argument, the program reads from stdin.

readExpression()

Parse an SQL Expression (like the WHERE clause of an SQL query).

readStatement()

Parse an SQL Statement from the parser's input stream.

readStatements()

Parse a set of SQL Statements from the parser's input stream (all the available statements are parsed and returned).

 public ZqlParser(InputStream in)

Create a new parser to parse SQL statements from a given input stream.

Parameters:

in - The InputStream from which SQL statements will be read.

 public ZqlParser()

Create a new parser: before use, call initParser(InputStream) to specify an input stream for the parsing.

 public static void main(String args[]) throws ParseException

Test program: Parses SQL statements from stdin or from a text file.
If the program receives one argument, it is an SQL text file name; if there's no argument, the program reads from stdin.

 public void initParser(InputStream in)

Initialize (or re-initialize) the input stream for the parser.

 public ZStatement readStatement() throws ParseException

Parse an SQL Statement from the parser's input stream.

Returns:

An SQL statement, or null if there's no more statement.

 public Vector readStatements() throws ParseException

Parse a set of SQL Statements from the parser's input stream (all the available statements are parsed and returned).

Returns:

A vector of ZStatement objects (SQL statements).

 public ZExp readExpression() throws ParseException

Parse an SQL Expression (like the WHERE clause of an SQL query).

Returns:

An SQL expression.

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