Package edu.caltech.nanodb.sqlparse

Class ParseUtil

java.lang.Object

edu.caltech.nanodb.sqlparse.ParseUtil

public class ParseUtil
extends java.lang.Object

This helper class parses a string into a SQL operation using the NanoSQL parser.

Field Summary

Fields

Modifier and Type	Field	Description
private static org.apache.logging.log4j.Logger	logger	A logging object for reporting anything interesting that happens.

Constructor Summary

Constructors

Constructor	Description
ParseUtil()

Method Summary

Modifier and Type	Method	Description
static java.lang.String	appendSemicolon(java.lang.String command)	This helper function conditionally appends a semicolon onto a command string if one is not already present.
static Command	parseCommand(java.lang.String command)	Parse an input string into some kind of Command.
static Command	parseCommand(java.lang.String command, FunctionDirectory functionDirectory)	Parse an input string into some kind of Command.
static java.util.List<Command>	parseCommands(java.lang.String commands, FunctionDirectory functionDirectory)
static Expression	parseExpression(java.lang.String expression)
static Expression	parseExpression(java.lang.String expression, FunctionDirectory functionDirectory)

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static org.apache.logging.log4j.Logger logger

A logging object for reporting anything interesting that happens.

Constructor Detail

ParseUtil

public ParseUtil()

Method Detail

appendSemicolon

public static java.lang.String appendSemicolon(java.lang.String command)

This helper function conditionally appends a semicolon onto a command string if one is not already present. Note that leading and trailing whitespace are also trimmed by this function.

Parameters:

command - the SQL command to optionally append a semicolon to.

Returns:

a SQL command that is definitely terminated with a semicolon.

parseCommand

public static Command parseCommand(java.lang.String command,
                                   FunctionDirectory functionDirectory)
                            throws org.antlr.v4.runtime.RecognitionException

Parse an input string into some kind of Command.

Parameters:

command - the string representation of the command

functionDirectory - a directory of functions to resolve function-calls against

Returns:

a Command object representing the command

Throws:

org.antlr.v4.runtime.RecognitionException - if the string could not be parsed

parseCommand

public static Command parseCommand(java.lang.String command)
                            throws org.antlr.v4.runtime.RecognitionException

Parse an input string into some kind of Command.

Parameters:

command - the string representation of the command

Returns:

a Command object representing the command

Throws:

org.antlr.v4.runtime.RecognitionException - if the string could not be parsed

parseCommands

public static java.util.List<Command> parseCommands(java.lang.String commands,
                                                    FunctionDirectory functionDirectory)
                                             throws org.antlr.v4.runtime.RecognitionException

Throws:

org.antlr.v4.runtime.RecognitionException

parseExpression

public static Expression parseExpression(java.lang.String expression,
                                         FunctionDirectory functionDirectory)

parseExpression

public static Expression parseExpression(java.lang.String expression)