org.unitils.dbmaintainer.script.parsingstate.impl
Class NormalParsingState

java.lang.Object
  org.unitils.dbmaintainer.script.parsingstate.impl.BaseParsingState
      org.unitils.dbmaintainer.script.parsingstate.impl.NormalParsingState

All Implemented Interfaces:

ParsingState

Direct Known Subclasses:

OracleNormalParsingState

public class NormalParsingState
extends BaseParsingState

The default initial parsing state that is able to recognize the beginning of line comments, block comments, single and double quote literals and the ending of a statment.

Author:

Tim Ducheyne, Filip Neven

Field Summary

protected boolean	backSlashEscapingEnabled Determines whether backslashes can be used to escape characters, e.g. \" for a double quote (= "")
protected boolean	escaping True if the next character should be escaped
protected ParsingState	inBlockCommentParsingState The in a block comment (/ * comment * /) state.
protected ParsingState	inDoubleQuotesParsingState The in double quotes ("text") state.
protected ParsingState	inLineCommentParsingState The in an in-line comment (-- comment) state.
protected ParsingState	inSingleQuotesParsingState The in single quotes ('text') state.

Constructor Summary

NormalParsingState()

Method Summary

protected ParsingState	getNextParsingState(char previousChar, char currentChar, char nextChar, StatementBuilder statementBuilder) Determines the next state.
void	init(ParsingState inLineCommentParsingState, ParsingState inBlockCommentParsingState, ParsingState inSingleQuotesParsingState, ParsingState inDoubleQuotesParsingState, boolean backSlashEscapingEnabled) Initializes the state with the given parsing states.

Methods inherited from class org.unitils.dbmaintainer.script.parsingstate.impl.BaseParsingState

handleNextChar

Methods inherited from class java.lang.Object

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

Field Detail

inLineCommentParsingState

protected ParsingState inLineCommentParsingState

The in an in-line comment (-- comment) state.

inBlockCommentParsingState

protected ParsingState inBlockCommentParsingState

The in a block comment (/ * comment * /) state.

inSingleQuotesParsingState

protected ParsingState inSingleQuotesParsingState

The in single quotes ('text') state.

inDoubleQuotesParsingState

protected ParsingState inDoubleQuotesParsingState

The in double quotes ("text") state.

backSlashEscapingEnabled

protected boolean backSlashEscapingEnabled

Determines whether backslashes can be used to escape characters, e.g. \" for a double quote (= "")

escaping

protected boolean escaping

True if the next character should be escaped

Constructor Detail

NormalParsingState

public NormalParsingState()

Method Detail

init

public void init(ParsingState inLineCommentParsingState,
                 ParsingState inBlockCommentParsingState,
                 ParsingState inSingleQuotesParsingState,
                 ParsingState inDoubleQuotesParsingState,
                 boolean backSlashEscapingEnabled)

Initializes the state with the given parsing states.

Parameters:

inLineCommentParsingState - The inline comment state, not null

inBlockCommentParsingState - The block comment state, not null

inSingleQuotesParsingState - The single quote literal state, not null

inDoubleQuotesParsingState - The double quote literal state, not null

backSlashEscapingEnabled - True if backslashes can be used for escaping

getNextParsingState

protected ParsingState getNextParsingState(char previousChar,
                                           char currentChar,
                                           char nextChar,
                                           StatementBuilder statementBuilder)

Determines the next state. This will look for the beginning of a line comment, a block comment, a single qoute literal and a double quote literal. A semi-colon indicates the end of the statement.

Specified by:

getNextParsingState in class BaseParsingState

Parameters:

previousChar - The previous char, 0 if none

currentChar - The current char

nextChar - The next char, 0 if none

statementBuilder - The statement builder, not null

Returns:

The next parsing state, null if the end of the statement is reached