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QAbstractFileEngine.Extension
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SUMMARY: NESTED | <A HREF="#enum_constant_summary">ENUM CONSTANTS</A> | FIELD | <A HREF="#method_summary">METHOD</A></FONT></TD>
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com.trolltech.qt.core</FONT>
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Enum QAbstractFileEngine.Extension</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by ">java.lang.Enum<<A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A>>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.trolltech.qt.core.QAbstractFileEngine.Extension</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/trolltech/qt/QtEnumerator.html" title="interface in com.trolltech.qt">QtEnumerator</A>, java.io.Serializable, java.lang.Comparable<<A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A>></DD>
</DL>
<DL>
<DT><B>Enclosing class:</B><DD><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.html" title="class in com.trolltech.qt.core">QAbstractFileEngine</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public static enum <B>QAbstractFileEngine.Extension</B><DT>extends java.lang.Enum<<A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A>><DT>implements <A HREF="../../../../com/trolltech/qt/QtEnumerator.html" title="interface in com.trolltech.qt">QtEnumerator</A></DL>
</PRE>
<P>
<p>This enum describes the types of extensions that the file engine can support. Before using these extensions, you must verify that the extension is supported (i.e., call <a href="QAbstractFileEngine.html#supportsExtension(com.trolltech.qt.core.QAbstractFileEngine.Extension)"><tt>supportsExtension</tt></a>).</p>
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<!-- =========== ENUM CONSTANT SUMMARY =========== -->
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<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html#AtEndExtension">AtEndExtension</A></B></CODE>
<BR>
Whether the current file position is at the end of the file or not.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html#CustomEnum">CustomEnum</A></B></CODE>
<BR>
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<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html#FastReadLineExtension">FastReadLineExtension</A></B></CODE>
<BR>
Whether the file engine provides a fast implementation for <a href="QAbstractFileEngine.html#readLine(com.trolltech.qt.QNativePointer, long)"><tt>readLine</tt></a> or not.</TD>
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<CODE>static <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html#resolve(int)">resolve</A></B>(int value)</CODE>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html#value()">value</A></B>()</CODE>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html#valueOf(java.lang.String)">valueOf</A></B>(java.lang.String name)</CODE>
<BR>
Returns the enum constant of this type with the specified name.</TD>
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<CODE>static <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html#values()">values</A></B>()</CODE>
<BR>
Returns an array containing the constants of this enum type, in
the order they're declared.</TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Enum</B></TH>
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<TD><CODE>clone, compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf</CODE></TD>
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<TD><CODE>finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD>
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<A NAME="AtEndExtension"><!-- --></A><H3>
AtEndExtension</H3>
<PRE>
public static final <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A> <B>AtEndExtension</B></PRE>
<DL>
<DD><p>Whether the current file position is at the end of the file or not. This extension allows file engines that implement local buffering to report end-of-file status without having to check the size of the file. It is also useful for sequential files, where the size of the file cannot be used to determine whether or not you have reached the end. This extension returns true if the file is at the end; otherwise it returns false. The input and output arguments to extension() are ignored.</p>
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="FastReadLineExtension"><!-- --></A><H3>
FastReadLineExtension</H3>
<PRE>
public static final <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A> <B>FastReadLineExtension</B></PRE>
<DL>
<DD><p>Whether the file engine provides a fast implementation for <a href="QAbstractFileEngine.html#readLine(com.trolltech.qt.QNativePointer, long)"><tt>readLine</tt></a> or not. If <a href="QAbstractFileEngine.html#readLine(com.trolltech.qt.QNativePointer, long)"><tt>readLine</tt></a> remains unimplemented in the file engine, <a href="QAbstractFileEngine.html#QAbstractFileEngine()"><tt>QAbstractFileEngine</tt></a> will provide an implementation based on calling <a href="QAbstractFileEngine.html#read(com.trolltech.qt.QNativePointer, long)"><tt>read</tt></a> repeatedly. If <a href="QAbstractFileEngine.html#supportsExtension(com.trolltech.qt.core.QAbstractFileEngine.Extension)"><tt>supportsExtension</tt></a> returns false for this extension, however, <a href="QIODevice.html"><tt>QIODevice</tt></a> can provide a faster implementation by making use of its internal buffer. For engines that already provide a fast <a href="QAbstractFileEngine.html#readLine(com.trolltech.qt.QNativePointer, long)"><tt>readLine</tt></a> implementation, returning false for this extension can avoid unnnecessary double-buffering in <a href="QIODevice.html"><tt>QIODevice</tt></a>.</p>
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="CustomEnum"><!-- --></A><H3>
CustomEnum</H3>
<PRE>
public static final <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A> <B>CustomEnum</B></PRE>
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<DL>
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<A NAME="values()"><!-- --></A><H3>
values</H3>
<PRE>
public static final <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A>[] <B>values</B>()</PRE>
<DL>
<DD>Returns an array containing the constants of this enum type, in
the order they're declared. This method may be used to iterate
over the constants as follows:
<pre>
for(QAbstractFileEngine.Extension c : QAbstractFileEngine.Extension.values())
System.out.println(c);
</pre>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an array containing the constants of this enum type, in
the order they're declared</DL>
</DD>
</DL>
<HR>
<A NAME="valueOf(java.lang.String)"><!-- --></A><H3>
valueOf</H3>
<PRE>
public static <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A> <B>valueOf</B>(java.lang.String name)</PRE>
<DL>
<DD>Returns the enum constant of this type with the specified name.
The string must match <I>exactly</I> an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
not permitted.)
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the enum constant to be returned.
<DT><B>Returns:</B><DD>the enum constant with the specified name
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if this enum type has no constant
with the specified name</DL>
</DD>
</DL>
<HR>
<A NAME="value()"><!-- --></A><H3>
value</H3>
<PRE>
public int <B>value</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../com/trolltech/qt/QtEnumerator.html#value()">value</A></CODE> in interface <CODE><A HREF="../../../../com/trolltech/qt/QtEnumerator.html" title="interface in com.trolltech.qt">QtEnumerator</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="resolve(int)"><!-- --></A><H3>
resolve</H3>
<PRE>
public static <A HREF="../../../../com/trolltech/qt/core/QAbstractFileEngine.Extension.html" title="enum in com.trolltech.qt.core">QAbstractFileEngine.Extension</A> <B>resolve</B>(int value)</PRE>
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