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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_FILE_FSTRINGFUNCTIONS_HXX
#define INCLUDED_CONNECTIVITY_SOURCE_INC_FILE_FSTRINGFUNCTIONS_HXX
#include "file/fcode.hxx"
#include "file/filedllapi.hxx"
namespace connectivity
{
namespace file
{
/** UCASE(str)
UPPER(str)
Returns the string str with all characters changed to uppercase according to the current character set mapping (the default is ISO-8859-1 Latin1):
> SELECT UCASE('Hej');
-> 'HEJ'
*/
class OOp_Upper : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const;
};
/** LCASE(str)
LOWER(str)
Returns the string str with all characters changed to lowercase according to the current character set mapping (the default is ISO-8859-1 Latin1):
> SELECT LCASE('QUADRATICALLY');
-> 'quadratically'
*/
class OOp_Lower : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const;
};
/** ASCII(str)
Returns the ASCII code value of the leftmost character of the string str. Returns 0 if str is the empty string. Returns NULL if str is NULL:
> SELECT ASCII('2');
-> 50
> SELECT ASCII(2);
-> 50
> SELECT ASCII('dx');
-> 100
*/
class OOp_Ascii : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const;
};
/** LENGTH(str)
OCTET_LENGTH(str)
CHAR_LENGTH(str)
CHARACTER_LENGTH(str)
Returns the length of the string str:
> SELECT LENGTH('text');
-> 4
> SELECT OCTET_LENGTH('text');
-> 4
*/
class OOp_CharLength : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const;
};
/** CHAR(N,...)
CHAR() interprets the arguments as integers and returns a string consisting of the characters given by the ASCII code values of those integers. NULL values are skipped:
> SELECT CHAR(ascii('t'),ascii('e'),ascii('s'),ascii('t'));
-> 'test'
> SELECT CHAR(77,77.3,'77.3');
-> 'MMM'
*/
class OOp_Char : public ONthOperator
{
protected:
virtual ORowSetValue operate(const ::std::vector<ORowSetValue>& lhs) const;
};
/** CONCAT(str1,str2,...)
Returns the string that results from concatenating the arguments. Returns NULL if any argument is NULL. May have more than 2 arguments. A numeric argument is converted to the equivalent string form:
> SELECT CONCAT('OO', 'o', 'OO');
-> 'OOoOO'
> SELECT CONCAT('OO', NULL, 'OO');
-> NULL
> SELECT CONCAT(14.3);
-> '14.3'
*/
class OOp_Concat : public ONthOperator
{
protected:
virtual ORowSetValue operate(const ::std::vector<ORowSetValue>& lhs) const;
};
/** LOCATE(substr,str)
POSITION(substr IN str)
Returns the position of the first occurrence of substring substr in string str. Returns 0 if substr is not in str:
> SELECT LOCATE('bar', 'foobarbar');
-> 4
> SELECT LOCATE('xbar', 'foobar');
-> 0
LOCATE(substr,str,pos)
Returns the position of the first occurrence of substring substr in string str, starting at position pos. Returns 0 if substr is not in str:
> SELECT LOCATE('bar', 'foobarbar',5);
-> 7
*/
class OOp_Locate : public ONthOperator
{
protected:
virtual ORowSetValue operate(const ::std::vector<ORowSetValue>& lhs) const;
};
/** SUBSTRING(str,pos)
SUBSTRING(str FROM pos)
Returns a substring from string str starting at position pos:
> SELECT SUBSTRING('Quadratically',5);
-> 'ratically'
> SELECT SUBSTRING('foobarbar' FROM 4);
-> 'barbar'
SUBSTRING(str,pos,len)
SUBSTRING(str FROM pos FOR len)
Returns a substring len characters long from string str, starting at position pos. The variant form that uses FROM is SQL-92 syntax:
> SELECT SUBSTRING('Quadratically',5,6);
-> 'ratica'
*/
class OOp_SubString : public ONthOperator
{
protected:
virtual ORowSetValue operate(const ::std::vector<ORowSetValue>& lhs) const;
};
/** LTRIM(str)
Returns the string str with leading space characters removed:
> SELECT LTRIM(' barbar');
-> 'barbar'
*/
class OOp_LTrim : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const;
};
/** RTRIM(str)
Returns the string str with trailing space characters removed:
> SELECT RTRIM('barbar ');
-> 'barbar'
*/
class OOp_RTrim : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const;
};
/** SPACE(N)
Returns a string consisting of N space characters:
> SELECT SPACE(6);
-> ' '
*/
class OOp_Space : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const;
};
/** REPLACE(str,from_str,to_str)
Returns the string str with all occurrences of the string from_str replaced by the string to_str:
> SELECT REPLACE('www.OOo.com', 'w', 'Ww');
-> 'WwWwWw.OOo.com'
*/
class OOp_Replace : public ONthOperator
{
protected:
virtual ORowSetValue operate(const ::std::vector<ORowSetValue>& lhs) const;
};
/** REPEAT(str,count)
Returns a string consisting of the string str repeated count times. If count <= 0, returns an empty string. Returns NULL if str or count are NULL:
> SELECT REPEAT('OOo', 3);
-> 'OOoOOoOOo'
*/
class OOp_Repeat : public OBinaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const;
};
/** INSERT(str,pos,len,newstr)
Returns the string str, with the substring beginning at position pos and len characters long replaced by the string newstr:
> SELECT INSERT('Quadratic', 3, 4, 'What');
-> 'QuWhattic'
*/
class OOp_Insert : public ONthOperator
{
protected:
virtual ORowSetValue operate(const ::std::vector<ORowSetValue>& lhs) const;
};
/** LEFT(str,len)
Returns the leftmost len characters from the string str:
> SELECT LEFT('foobarbar', 5);
-> 'fooba'
*/
class OOp_Left : public OBinaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const;
};
/** RIGHT(str,len)
Returns the rightmost len characters from the string str:
> SELECT RIGHT('foobarbar', 4);
-> 'rbar'
*/
class OOp_Right : public OBinaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const;
};
}
}
#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_FILE_FSTRINGFUNCTIONS_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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