org.h2.command

类 Parser

java.lang.Object

org.h2.command.Parser

public class Parser
extends Object

The parser is used to convert a SQL statement string to an command object.

作者:

Thomas Mueller, Noel Grandin, Nicolas Fortin, Atelier SIG, IRSTV FR CNRS 24888

构造器概要

构造器

构造器和说明
Parser() Creates a new instance of parser for special use cases.
Parser(SessionLocal session) Creates a new instance of parser.

方法概要

限定符和类型	方法和说明
static String	formatNonKeywords(BitSet nonKeywords) Formats a comma-separated list of keywords.
int	getLastParseIndex() Returns the last parse index.
static AlterTableAddConstraint	newPrimaryKeyConstraintCommand(SessionLocal session, Schema schema, String tableName, Column column) Create a new alter table command.
Object	parseColumnList(String sql, int offset) Parses a list of column names or numbers in parentheses.
Expression	parseDomainConstraintExpression(String sql) Parse a SQL code snippet that represents an expression for a domain constraint.
Expression	parseExpression(String sql) Parse a SQL code snippet that represents an expression.
static BitSet	parseNonKeywords(String[] nonKeywords) Parses the specified collection of non-keywords.
Table	parseTableName(String sql) Parse a SQL code snippet that represents a table name.
Prepared	prepare(String sql) Parse the statement and prepare it for execution.
Command	prepareCommand(String sql) Parse a statement or a list of statements, and prepare it for execution.
Query	prepareQueryExpression(String sql) Parse a query and prepare its expressions.
static String	quoteIdentifier(String s, int sqlFlags) Add double quotes around an identifier if required.
void	setLiteralsChecked(boolean literalsChecked)
void	setRightsChecked(boolean rightsChecked)
void	setSuppliedParameters(ArrayList<Parameter> suppliedParameters)
String	toString()

从类继承的方法 java.lang.Object

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

构造器详细资料

Parser

public Parser(SessionLocal session)

Creates a new instance of parser.

参数:

session - the session

Parser

public Parser()

Creates a new instance of parser for special use cases.

方法详细资料

parseNonKeywords

public static BitSet parseNonKeywords(String[] nonKeywords)

Parses the specified collection of non-keywords.

参数:

nonKeywords - array of non-keywords in upper case

返回:

bit set of non-keywords, or null

formatNonKeywords

public static String formatNonKeywords(BitSet nonKeywords)

Formats a comma-separated list of keywords.

参数:

nonKeywords - bit set of non-keywords, or null

返回:

comma-separated list of non-keywords

prepare

public Prepared prepare(String sql)

Parse the statement and prepare it for execution.

参数:

sql - the SQL statement to parse

返回:

the prepared object

prepareQueryExpression

public Query prepareQueryExpression(String sql)

Parse a query and prepare its expressions. Rights and literals must be already checked.

参数:

sql - the SQL statement to parse

返回:

the prepared object

prepareCommand

public Command prepareCommand(String sql)

Parse a statement or a list of statements, and prepare it for execution.

参数:

sql - the SQL statement to parse

返回:

the command object

newPrimaryKeyConstraintCommand

public static AlterTableAddConstraint newPrimaryKeyConstraintCommand(SessionLocal session,
                                                                     Schema schema,
                                                                     String tableName,
                                                                     Column column)

Create a new alter table command.

参数:

session - the session

schema - the schema

tableName - the table

column - the column

返回:

the command

quoteIdentifier

public static String quoteIdentifier(String s,
                                     int sqlFlags)

Add double quotes around an identifier if required.

参数:

s - the identifier

sqlFlags - formatting flags

返回:

the quoted identifier

setLiteralsChecked

public void setLiteralsChecked(boolean literalsChecked)

setRightsChecked

public void setRightsChecked(boolean rightsChecked)

setSuppliedParameters

public void setSuppliedParameters(ArrayList<Parameter> suppliedParameters)

parseExpression

public Expression parseExpression(String sql)

Parse a SQL code snippet that represents an expression.

参数:

sql - the code snippet

返回:

the expression object

parseDomainConstraintExpression

public Expression parseDomainConstraintExpression(String sql)

Parse a SQL code snippet that represents an expression for a domain constraint.

参数:

sql - the code snippet

返回:

the expression object

parseTableName

public Table parseTableName(String sql)

Parse a SQL code snippet that represents a table name.

参数:

sql - the code snippet

返回:

the table object

parseColumnList

public Object parseColumnList(String sql,
                              int offset)

Parses a list of column names or numbers in parentheses.

参数:

sql - the source SQL

offset - the initial offset

返回:

the array of column names (String[]) or numbers (int[])

抛出:

DbException - on syntax error

getLastParseIndex

public int getLastParseIndex()

Returns the last parse index.

返回:

the last parse index

toString

public String toString()

覆盖:

toString 在类中 Object