com.alibaba.druid.sql

类 PagerUtils

java.lang.Object

com.alibaba.druid.sql.PagerUtils

public class PagerUtils
extends Object

嵌套类概要

嵌套类

限定符和类型	类和说明
private static class	PagerUtils.MySqlUnorderedLimitDetectVisitor
private static class	PagerUtils.OracleUnorderedLimitDetectVisitor

构造器概要

构造器

构造器和说明
PagerUtils()

方法概要

限定符和类型	方法和说明
private static void	clearOrderBy(SQLSelectQuery query)
private static String	count(SQLSelect select, String dbType)
static String	count(String sql, String dbType)
private static SQLSelectItem	createCountItem(String dbType)
private static String	createCountUseSubQuery(SQLSelect select, String dbType)
private static SQLSelectQueryBlock	createQueryBlock(String dbType)
static int	getLimit(String sql, String dbType)
static boolean	hasUnorderedLimit(String sql, String dbType)
static String	limit(SQLSelect select, String dbType, int offset, int count)
static boolean	limit(SQLSelect select, String dbType, int offset, int count, boolean check)
static String	limit(String sql, String dbType, int offset, int count)
private static boolean	limitDB2(SQLSelect select, String dbType, int offset, int count, boolean check)
private static boolean	limitMySqlQueryBlock(SQLSelectQueryBlock queryBlock, String dbType, int offset, int count, boolean check)
private static boolean	limitOracle(SQLSelect select, String dbType, int offset, int count, boolean check)
private static boolean	limitPostgreSQLQueryBlock(PGSelectQueryBlock queryBlock, String dbType, int offset, int count, boolean check)
private static boolean	limitQueryBlock(SQLSelect select, String dbType, int offset, int count, boolean check)
private static boolean	limitSQLServer(SQLSelect select, String dbType, int offset, int count, boolean check)
private static boolean	limitUnion(SQLUnionQuery queryBlock, String dbType, int offset, int count, boolean check)

从类继承的方法 java.lang.Object

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

构造器详细资料

PagerUtils

public PagerUtils()

方法详细资料

count

public static String count(String sql,
                           String dbType)

limit

public static String limit(String sql,
                           String dbType,
                           int offset,
                           int count)

limit

public static String limit(SQLSelect select,
                           String dbType,
                           int offset,
                           int count)

limit

public static boolean limit(SQLSelect select,
                            String dbType,
                            int offset,
                            int count,
                            boolean check)

limitQueryBlock

private static boolean limitQueryBlock(SQLSelect select,
                                       String dbType,
                                       int offset,
                                       int count,
                                       boolean check)

limitPostgreSQLQueryBlock

private static boolean limitPostgreSQLQueryBlock(PGSelectQueryBlock queryBlock,
                                                 String dbType,
                                                 int offset,
                                                 int count,
                                                 boolean check)

limitDB2

private static boolean limitDB2(SQLSelect select,
                                String dbType,
                                int offset,
                                int count,
                                boolean check)

limitSQLServer

private static boolean limitSQLServer(SQLSelect select,
                                      String dbType,
                                      int offset,
                                      int count,
                                      boolean check)

limitOracle

private static boolean limitOracle(SQLSelect select,
                                   String dbType,
                                   int offset,
                                   int count,
                                   boolean check)

limitMySqlQueryBlock

private static boolean limitMySqlQueryBlock(SQLSelectQueryBlock queryBlock,
                                            String dbType,
                                            int offset,
                                            int count,
                                            boolean check)

limitUnion

private static boolean limitUnion(SQLUnionQuery queryBlock,
                                  String dbType,
                                  int offset,
                                  int count,
                                  boolean check)

count

private static String count(SQLSelect select,
                            String dbType)

createCountUseSubQuery

private static String createCountUseSubQuery(SQLSelect select,
                                             String dbType)

createQueryBlock

private static SQLSelectQueryBlock createQueryBlock(String dbType)

createCountItem

private static SQLSelectItem createCountItem(String dbType)

clearOrderBy

private static void clearOrderBy(SQLSelectQuery query)

getLimit

public static int getLimit(String sql,
                           String dbType)

参数:

sql -

dbType -

返回:

if not exists limit, return -1;

hasUnorderedLimit

public static boolean hasUnorderedLimit(String sql,
                                        String dbType)