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|
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KDE 4.9 PyKDE API Reference
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<h1>Predicate Class Reference</h1>
<code>from PyKDE4.solid import *</code>
<p>
Namespace: <a href="../solid/Solid.html">Solid</a><br />
<h2>Detailed Description</h2>
<p>This class implements predicates for devices.
</p>
<p>
A predicate is a logical condition that a given device can match or not.
It's a constraint about the value a property must have in a given device
interface, or any combination (conjunction, disjunction) of such
constraints.
</p>
<p>
FIXME: Add an example.
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Enumerations</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#ComparisonOperator">ComparisonOperator</a> </td><td class="memItemRight" valign="bottom">{ Equals, Mask }</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#Type">Type</a> </td><td class="memItemRight" valign="bottom">{ PropertyCheck, Conjunction, Disjunction, InterfaceCheck }</td></tr>
<tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Predicate">__init__</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Predicate">__init__</a> (self, <a href="../solid/Solid.Predicate.html">Solid.Predicate</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Predicate">__init__</a> (self, QString ifaceName, QString property, QVariant value, <a href="../solid/Solid.Predicate.html#ComparisonOperator">Solid.Predicate.ComparisonOperator</a> compOperator=Solid.Predicate.Equals)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Predicate">__init__</a> (self, <a href="../solid/Solid.DeviceInterface.html#Type">Solid.DeviceInterface.Type</a> ifaceType)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Predicate">__init__</a> (self, QString ifaceName)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html#ComparisonOperator">Solid.Predicate.ComparisonOperator</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#comparisonOperator">comparisonOperator</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#firstOperand">firstOperand</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.DeviceInterface.html#Type">Solid.DeviceInterface.Type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#interfaceType">interfaceType</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isValid">isValid</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#matches">matches</a> (self, <a href="../solid/Solid.Device.html">Solid.Device</a> device)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QVariant </td><td class="memItemRight" valign="bottom"><a class="el" href="#matchingValue">matchingValue</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator &">operator &</a> (self, <a href="../solid/Solid.Predicate.html">Solid.Predicate</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator &=">operator &=</a> (self, <a href="../solid/Solid.Predicate.html">Solid.Predicate</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator |">operator |</a> (self, <a href="../solid/Solid.Predicate.html">Solid.Predicate</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator |=">operator |=</a> (self, <a href="../solid/Solid.Predicate.html">Solid.Predicate</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#propertyName">propertyName</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#secondOperand">secondOperand</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#toString">toString</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html#Type">Solid.Predicate.Type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#type">type</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QSet<Solid::DeviceInterface::Type> </td><td class="memItemRight" valign="bottom"><a class="el" href="#usedTypes">usedTypes</a> (self)</td></tr>
<tr><td colspan="2"><br><h2>Static Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#fromString">fromString</a> (QString predicate)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="Predicate"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Constructs an invalid predicate.
</p></div></div><a class="anchor" name="Predicate"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td>
<td class="paramname"><em>other</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Copy constructor.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>other</em> </td><td> the predicate to copy
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="Predicate"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>ifaceName</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>property</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QVariant </td>
<td class="paramname"><em>value</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.Predicate.html#ComparisonOperator">Solid.Predicate.ComparisonOperator</a> </td>
<td class="paramname"><em>compOperator=Solid.Predicate.Equals</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Constructs a predicate matching the value of a property in
a given device interface.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>ifaceName</em> </td><td> the name of the device interface the device must have
<tr><td></td><td valign="top"><em>property</em> </td><td> the property name of the device interface
<tr><td></td><td valign="top"><em>value</em> </td><td> the value the property must have to make the device match
<tr><td></td><td valign="top"><em>compOperator</em> </td><td> the operator to apply between the property and the value when matching
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="Predicate"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.DeviceInterface.html#Type">Solid.DeviceInterface.Type</a> </td>
<td class="paramname"><em>ifaceType</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Constructs a predicate matching devices being of a particular device interface
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>ifaceType</em> </td><td> the device interface the device must have
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="Predicate"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>ifaceName</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Constructs a predicate matching devices being of a particular device interface
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>ifaceName</em> </td><td> the name of the device interface the device must have
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="comparisonOperator"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html#ComparisonOperator">Solid.Predicate.ComparisonOperator</a> comparisonOperator</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Retrieves the comparison operator used to compare a property's value
</p>
<p>
<dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl> <dl class="note" compact><dt><b>Note:</b></dt><dd> This is only valid for Conjunction and Disjunction types
</dd></dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd> the comparison operator used
</dd></dl>
</p></div></div><a class="anchor" name="firstOperand"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> firstOperand</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>A smaller, inner predicate which is the first to appear and is compared with the second one
</p>
<p>
<dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl> <dl class="note" compact><dt><b>Note:</b></dt><dd> This is only valid for Conjunction and Disjunction types
</dd></dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd> The predicate used for the first operand
</dd></dl>
</p></div></div><a class="anchor" name="interfaceType"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.DeviceInterface.html#Type">Solid.DeviceInterface.Type</a> interfaceType</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Retrieves the interface type.
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> This is only valid for InterfaceCheck and PropertyCheck types
</dd></dl> <dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd> a device interface type used by the predicate
</dd></dl>
</p></div></div><a class="anchor" name="isValid"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool isValid</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Indicates if the predicate is valid.
</p>
<p>
Predicate() is the only invalid predicate.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the predicate is valid, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="matches"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool matches</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.Device.html">Solid.Device</a> </td>
<td class="paramname"><em>device</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Checks if a device matches the predicate.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>device</em> </td><td> the device to match against the predicate
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the given device matches the predicate, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="matchingValue"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QVariant matchingValue</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Retrieves the value used when comparing a devices property to see if it matches the predicate
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> This is only valid for the PropertyCheck type
</dd></dl> <dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd> the value used
</dd></dl>
</p></div></div><a class="anchor" name="operator &"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> operator &</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td>
<td class="paramname"><em>other</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>'And' operator.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>other</em> </td><td> the second operand
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> a new 'and' predicate having 'this' and 'other' as operands
</dd></dl>
</p></div></div><a class="anchor" name="operator &="></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> operator &=</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td>
<td class="paramname"><em>other</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>'AndEquals' operator.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>other</em> </td><td> the second operand
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> assigns to 'this' a new 'and' predicate having 'this' and 'other' as operands
</dd></dl>
</p></div></div><a class="anchor" name="operator |"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> operator |</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td>
<td class="paramname"><em>other</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>'Or' operator.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>other</em> </td><td> the second operand
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> a new 'or' predicate having 'this' and 'other' as operands
</dd></dl>
</p></div></div><a class="anchor" name="operator |="></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> operator |=</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> </td>
<td class="paramname"><em>other</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>'OrEquals' operator.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>other</em> </td><td> the second operand
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> assigns to 'this' a new 'or' predicate having 'this' and 'other' as operands
</dd></dl>
</p></div></div><a class="anchor" name="propertyName"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QString propertyName</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Retrieves the property name used when retrieving the value to compare against
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> This is only valid for the PropertyCheck type
</dd></dl> <dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd> a property name
</dd></dl>
</p></div></div><a class="anchor" name="secondOperand"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> secondOperand</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>A smaller, inner predicate which is the second to appear and is compared with the first one
</p>
<p>
<dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl> <dl class="note" compact><dt><b>Note:</b></dt><dd> This is only valid for Conjunction and Disjunction types
</dd></dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd> The predicate used for the second operand
</dd></dl>
</p></div></div><a class="anchor" name="toString"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QString toString</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Converts the predicate to its string form.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> a string representation of the predicate
</dd></dl>
</p></div></div><a class="anchor" name="type"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html#Type">Solid.Predicate.Type</a> type</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Retrieves the predicate type, used to determine how to handle the predicate
</p>
<p>
<dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd> the predicate type
</dd></dl>
</p></div></div><a class="anchor" name="usedTypes"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QSet<Solid::DeviceInterface::Type> usedTypes</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Retrieves the device interface types used in this predicate.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> all the device interface types used in this predicate
</dd></dl>
</p></div></div><hr><h2>Static Method Documentation</h2><a class="anchor" name="fromString"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../solid/Solid.Predicate.html">Solid.Predicate</a> fromString</td>
<td>(</td>
<td class="paramtype">QString </td>
<td class="paramname"><em>predicate</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Converts a string to a predicate.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>predicate</em> </td><td> the string to convert
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> a new valid predicate if the given string is syntactically
correct, Predicate() otherwise
</dd></dl>
</p></div></div><hr><h2>Enumeration Documentation</h2><a class="anchor" name="ComparisonOperator"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr><td class="memname">ComparisonOperator</td>
</tr>
</table>
</div>
<div class="memdoc"><p>The comparison operator which can be used for matching within the predicate.
</p>
<p>
- Equals, the property and the value will match for strict equality
- Mask, the property and the value will match if the bitmasking is not null
</p><dl compact><dt><b>Enumerator: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>Equals</em> </td><td><tr><td valign="top"><em>Mask</em> </td><td></table>
</dl>
</div></div><p><a class="anchor" name="Type"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr><td class="memname">Type</td>
</tr>
</table>
</div>
<div class="memdoc"><p>The predicate type which controls how the predicate is handled
</p>
<p>
- PropertyCheck, the predicate contains a comparison that needs to be matched using a ComparisonOperator
- Conjunction, the two contained predicates need to be true for this predicate to be true
- Disjunction, either of the two contained predicates may be true for this predicate to be true
- InterfaceCheck, the device type is compared
</p><dl compact><dt><b>Enumerator: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>PropertyCheck</em> </td><td><tr><td valign="top"><em>Conjunction</em> </td><td><tr><td valign="top"><em>Disjunction</em> </td><td><tr><td valign="top"><em>InterfaceCheck</em> </td><td></table>
</dl>
</div></div><p>
</div>
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