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diff --git a/doc/html/qsqlfieldinfo.html b/doc/html/qsqlfieldinfo.html new file mode 100644 index 00000000..20cc2e91 --- /dev/null +++ b/doc/html/qsqlfieldinfo.html @@ -0,0 +1,227 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/sql/qsqlfield.cpp:304 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>TQSqlFieldInfo Class</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQSqlFieldInfo Class Reference<br><small>[<a href="sql.html">sql module</a>]</small></h1> + +<p>The TQSqlFieldInfo class stores meta data associated with a SQL field. +<a href="#details">More...</a> +<p><tt>#include <<a href="qsqlfield-h.html">qsqlfield.h</a>></tt> +<p><a href="qsqlfieldinfo-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn><a href="#TQSqlFieldInfo"><b>TQSqlFieldInfo</b></a> ( const TQString & name = TQString::null, TQVariant::Type typ = TQVariant::Invalid, int retquired = -1, int len = -1, int prec = -1, const TQVariant & defValue = TQVariant ( ), int typeID = 0, bool generated = TRUE, bool trim = FALSE, bool calculated = FALSE )</li> +<li class=fn><a href="#TQSqlFieldInfo-2"><b>TQSqlFieldInfo</b></a> ( const TQSqlFieldInfo & other )</li> +<li class=fn><a href="#TQSqlFieldInfo-3"><b>TQSqlFieldInfo</b></a> ( const TQSqlField & other, bool generated = TRUE )</li> +<li class=fn>virtual <a href="#~TQSqlFieldInfo"><b>~TQSqlFieldInfo</b></a> ()</li> +<li class=fn>TQSqlFieldInfo & <a href="#operator-eq"><b>operator=</b></a> ( const TQSqlFieldInfo & other )</li> +<li class=fn>bool <a href="#operator-eq-eq"><b>operator==</b></a> ( const TQSqlFieldInfo & f ) const</li> +<li class=fn>TQSqlField <a href="#toField"><b>toField</b></a> () const</li> +<li class=fn>int <a href="#isRetquired"><b>isRetquired</b></a> () const</li> +<li class=fn>TQVariant::Type <a href="#type"><b>type</b></a> () const</li> +<li class=fn>int <a href="#length"><b>length</b></a> () const</li> +<li class=fn>int <a href="#precision"><b>precision</b></a> () const</li> +<li class=fn>TQVariant <a href="#defaultValue"><b>defaultValue</b></a> () const</li> +<li class=fn>TQString <a href="#name"><b>name</b></a> () const</li> +<li class=fn>int <a href="#typeID"><b>typeID</b></a> () const</li> +<li class=fn>bool <a href="#isGenerated"><b>isGenerated</b></a> () const</li> +<li class=fn>bool <a href="#isTrim"><b>isTrim</b></a> () const</li> +<li class=fn>bool <a href="#isCalculated"><b>isCalculated</b></a> () const</li> +<li class=fn>virtual void <a href="#setTrim"><b>setTrim</b></a> ( bool trim )</li> +<li class=fn>virtual void <a href="#setGenerated"><b>setGenerated</b></a> ( bool gen )</li> +<li class=fn>virtual void <a href="#setCalculated"><b>setCalculated</b></a> ( bool calc )</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + +The TQSqlFieldInfo class stores meta data associated with a SQL field. +<p> + +<p> TQSqlFieldInfo objects only store meta data; field values are +stored in <a href="qsqlfield.html">TQSqlField</a> objects. +<p> All values must be set in the constructor, and may be retrieved +using <a href="#isRetquired">isRetquired</a>(), <a href="#type">type</a>(), <a href="#length">length</a>(), <a href="#precision">precision</a>(), <a href="#defaultValue">defaultValue</a>(), +<a href="#name">name</a>(), <a href="#isGenerated">isGenerated</a>() and <a href="#typeID">typeID</a>(). +<p>See also <a href="database.html">Database Classes</a>. + +<hr><h2>Member Function Documentation</h2> +<h3 class=fn><a name="TQSqlFieldInfo"></a>TQSqlFieldInfo::TQSqlFieldInfo ( const <a href="qstring.html">TQString</a> & name = TQString::null, <a href="qvariant.html#Type-enum">TQVariant::Type</a> typ = TQVariant::Invalid, int retquired = -1, int len = -1, int prec = -1, const <a href="qvariant.html">TQVariant</a> & defValue = TQVariant ( ), int typeID = 0, bool generated = TRUE, bool trim = FALSE, bool calculated = FALSE ) +</h3> +Constructs a TQSqlFieldInfo with the following parameters: +<center><table cellpadding="4" cellspacing="2" border="0"> +<tr bgcolor="#f0f0f0"> <td valign="top"><em>name</em> <td valign="top">the name of the field. +<tr bgcolor="#d0d0d0"> <td valign="top"><em>typ</em> <td valign="top">the field's type in a <a href="qvariant.html">TQVariant</a>. +<tr bgcolor="#f0f0f0"> <td valign="top"><em>retquired</em> <td valign="top">greater than 0 if the field is retquired, 0 +if its value can be NULL and less than 0 if it cannot be +determined whether the field is retquired or not. +<tr bgcolor="#d0d0d0"> <td valign="top"><em>len</em> <td valign="top">the length of the field. Note that for +non-character types some databases return either the length in +bytes or the number of digits. -1 signifies that the length cannot +be determined. +<tr bgcolor="#f0f0f0"> <td valign="top"><em>prec</em> <td valign="top">the precision of the field, or -1 if the field +has no precision or it cannot be determined. +<tr bgcolor="#d0d0d0"> <td valign="top"><em>defValue</em> <td valign="top">the default value that is inserted into +the table if none is specified by the user. TQVariant() if there is +no default value or it cannot be determined. +<tr bgcolor="#f0f0f0"> <td valign="top"><em>typeID</em> <td valign="top">the internal typeID of the database system +(only useful for low-level programming). 0 if unknown. +<tr bgcolor="#d0d0d0"> <td valign="top"><em>generated</em> <td valign="top">TRUE indicates that this field should be +included in auto-generated SQL statments, e.g. in <a href="qsqlcursor.html">TQSqlCursor</a>. +<tr bgcolor="#f0f0f0"> <td valign="top"><em>trim</em> <td valign="top">TRUE indicates that widgets should remove +trailing whitespace from character fields. This does not affect +the field value but only its representation inside widgets. +<tr bgcolor="#d0d0d0"> <td valign="top"><em>calculated</em> <td valign="top">TRUE indicates that the value of this +field is calculated. The value of calculated fields can by +modified by subclassing TQSqlCursor and overriding +<a href="qsqlcursor.html#calculateField">TQSqlCursor::calculateField</a>(). +</table></center> + +<h3 class=fn><a name="TQSqlFieldInfo-2"></a>TQSqlFieldInfo::TQSqlFieldInfo ( const <a href="qsqlfieldinfo.html">TQSqlFieldInfo</a> & other ) +</h3> +Constructs a copy of <em>other</em>. + +<h3 class=fn><a name="TQSqlFieldInfo-3"></a>TQSqlFieldInfo::TQSqlFieldInfo ( const <a href="qsqlfield.html">TQSqlField</a> & other, bool generated = TRUE ) +</h3> +Creates a TQSqlFieldInfo object with the type and the name of the +<a href="qsqlfield.html">TQSqlField</a> <em>other</em>. If <em>generated</em> is TRUE this field will be +included in auto-generated SQL statments, e.g. in <a href="qsqlcursor.html">TQSqlCursor</a>. + +<h3 class=fn><a name="~TQSqlFieldInfo"></a>TQSqlFieldInfo::~TQSqlFieldInfo ()<tt> [virtual]</tt> +</h3> +Destroys the object and frees any allocated resources. + +<h3 class=fn><a href="qvariant.html">TQVariant</a> <a name="defaultValue"></a>TQSqlFieldInfo::defaultValue () const +</h3> +Returns the field's default value or an empty <a href="qvariant.html">TQVariant</a> if the +field has no default value or the value couldn't be determined. +The default value is the value inserted in the database when it +is not explicitly specified by the user. + +<h3 class=fn>bool <a name="isCalculated"></a>TQSqlFieldInfo::isCalculated () const +</h3> +Returns TRUE if the field is calculated; otherwise returns FALSE. +<p> <p>See also <a href="#setCalculated">setCalculated</a>(). + +<h3 class=fn>bool <a name="isGenerated"></a>TQSqlFieldInfo::isGenerated () const +</h3> +Returns TRUE if the field should be included in auto-generated +SQL statments, e.g. in <a href="qsqlcursor.html">TQSqlCursor</a>; otherwise returns FALSE. +<p> <p>See also <a href="#setGenerated">setGenerated</a>(). + +<h3 class=fn>int <a name="isRetquired"></a>TQSqlFieldInfo::isRetquired () const +</h3> +Returns a value greater than 0 if the field is retquired (NULL +values are not allowed), 0 if it isn't retquired (NULL values are +allowed) or less than 0 if it cannot be determined whether the +field is retquired or not. + +<h3 class=fn>bool <a name="isTrim"></a>TQSqlFieldInfo::isTrim () const +</h3> +Returns TRUE if trailing whitespace should be removed from +character fields; otherwise returns FALSE. +<p> <p>See also <a href="#setTrim">setTrim</a>(). + +<h3 class=fn>int <a name="length"></a>TQSqlFieldInfo::length () const +</h3> +Returns the field's length. For fields storing text the return +value is the maximum number of characters the field can hold. For +non-character fields some database systems return the number of +bytes needed or the number of digits allowed. If the length cannot +be determined -1 is returned. + +<h3 class=fn><a href="qstring.html">TQString</a> <a name="name"></a>TQSqlFieldInfo::name () const +</h3> +Returns the name of the field in the SQL table. + +<p>Examples: <a href="sql.html#x2260">sql/overview/subclass3/main.cpp</a> and <a href="sql.html#x2264">sql/overview/subclass4/main.cpp</a>. +<h3 class=fn><a href="qsqlfieldinfo.html">TQSqlFieldInfo</a> & <a name="operator-eq"></a>TQSqlFieldInfo::operator= ( const <a href="qsqlfieldinfo.html">TQSqlFieldInfo</a> & other ) +</h3> +Assigns <em>other</em> to this field info and returns a reference to it. + +<h3 class=fn>bool <a name="operator-eq-eq"></a>TQSqlFieldInfo::operator== ( const <a href="qsqlfieldinfo.html">TQSqlFieldInfo</a> & f ) const +</h3> +Returns TRUE if this fieldinfo is equal to <em>f</em>; otherwise returns +FALSE. +<p> Two field infos are considered equal if all their attributes +match. + +<h3 class=fn>int <a name="precision"></a>TQSqlFieldInfo::precision () const +</h3> +Returns the field's precision or -1 if the field has no precision +or it cannot be determined. + +<h3 class=fn>void <a name="setCalculated"></a>TQSqlFieldInfo::setCalculated ( bool calc )<tt> [virtual]</tt> +</h3> +<em>calc</em> set to TRUE indicates that this field is a calculated +field. The value of calculated fields can by modified by subclassing +<a href="qsqlcursor.html">TQSqlCursor</a> and overriding <a href="qsqlcursor.html#calculateField">TQSqlCursor::calculateField</a>(). +<p> <p>See also <a href="#isCalculated">isCalculated</a>(). + +<h3 class=fn>void <a name="setGenerated"></a>TQSqlFieldInfo::setGenerated ( bool gen )<tt> [virtual]</tt> +</h3> +<em>gen</em> set to FALSE indicates that this field should not appear +in auto-generated SQL statements (for example in <a href="qsqlcursor.html">TQSqlCursor</a>). +<p> <p>See also <a href="#isGenerated">isGenerated</a>(). + +<h3 class=fn>void <a name="setTrim"></a>TQSqlFieldInfo::setTrim ( bool trim )<tt> [virtual]</tt> +</h3> +If <em>trim</em> is TRUE widgets should remove trailing whitespace from +character fields. This does not affect the field value but only +its representation inside widgets. +<p> <p>See also <a href="#isTrim">isTrim</a>(). + +<h3 class=fn><a href="qsqlfield.html">TQSqlField</a> <a name="toField"></a>TQSqlFieldInfo::toField () const +</h3> +Returns an empty <a href="qsqlfield.html">TQSqlField</a> based on the information in this +TQSqlFieldInfo. + +<h3 class=fn><a href="qvariant.html#Type-enum">TQVariant::Type</a> <a name="type"></a>TQSqlFieldInfo::type () const +</h3> +Returns the field's type or TQVariant::Invalid if the type is +unknown. + +<h3 class=fn>int <a name="typeID"></a>TQSqlFieldInfo::typeID () const +</h3> +Returns the internal type identifier as returned from the database +system. The return value is 0 if the type is unknown. +<p> <b>Warning:</b> This information is only useful for low-level database +programming and is <em>not</em> database independent. + +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">TQt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>TQt 3.3.8</div> +</table></div></address></body> +</html> |