datasource.html

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finalize, 
getClass, 
hashCode, 
notify, 
notifyAll, 
toString, 
wait, 
wait, 
wait</CODE></TD>
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<B>Constructor Detail</B></FONT></TD>
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<A NAME="DataSource()"><!-- --></A><H3>
DataSource</H3>
<PRE>
public <B>DataSource</B>()</PRE>
<DL>
<DD>A no-argument constructor required by pre 1.1 implementations
 so that this class can be instantiated by
 calling <CODE>Class.newInstance</CODE>.</DL>
<HR>

<A NAME="DataSource(javax.media.MediaLocator)"><!-- --></A><H3>
DataSource</H3>
<PRE>
public <B>DataSource</B>(<A HREF="../../../javax/media/MediaLocator.html">MediaLocator</A>&nbsp;source)</PRE>
<DL>
<DD>Construct a <CODE>DataSource</CODE> from a <CODE>MediaLocator</CODE>.
 This method should be overloaded by subclasses;
 the default implementation just keeps track of
 the <CODE>MediaLocator</CODE>.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The <CODE>MediaLocator</CODE> that describes
 the <CODE>DataSource</CODE>.</DL>
</DD>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<A NAME="setLocator(javax.media.MediaLocator)"><!-- --></A><H3>
setLocator</H3>
<PRE>
public void <B>setLocator</B>(<A HREF="../../../javax/media/MediaLocator.html">MediaLocator</A>&nbsp;source)</PRE>
<DL>
<DD>Set the connection <CODE>source</CODE> for this <CODE>DataSource</CODE>.
 This method should only be called once; an error is thrown if 
 the locator has already been set.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The <CODE>MediaLocator</CODE> that describes the
 media source.</DL>
</DD>
</DL>
<HR>

<A NAME="getLocator()"><!-- --></A><H3>
getLocator</H3>
<PRE>
public <A HREF="../../../javax/media/MediaLocator.html">MediaLocator</A> <B>getLocator</B>()</PRE>
<DL>
<DD>Get the <CODE>MediaLocator</CODE> that describes this source.
 Returns <CODE>null</CODE> if the locator hasn't been set. 
 (Very unlikely.)<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>The <CODE>MediaLocator</CODE> for this source.</DL>
</DD>
</DL>
<HR>

<A NAME="initCheck()"><!-- --></A><H3>
initCheck</H3>
<PRE>
protected void <B>initCheck</B>()</PRE>
<DL>
<DD>Check to see if this connection has been
 initialized with a <CODE>MediaLocator</CODE>.
 If the connection hasn't been initialized,
 <CODE>initCheck</CODE> throws an <CODE>UninitializedError</CODE>.
 Most methods should call <CODE>initCheck</CODE> on entry.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getContentType()"><!-- --></A><H3>
getContentType</H3>
<PRE>
public abstract java.lang.String <B>getContentType</B>()</PRE>
<DL>
<DD>Get a string that describes the content-type of the media
 that the source is providing.
 <p>
 It is an error to call <CODE>getContentType</CODE> if the source is
 not connected.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>The name that describes the media content.</DL>
</DD>
</DL>
<HR>

<A NAME="connect()"><!-- --></A><H3>
connect</H3>
<PRE>
public abstract void <B>connect</B>()
                      throws java.io.IOException</PRE>
<DL>
<DD>Open a connection to the source described by
 the <CODE>MediaLocator</CODE>.
 <p>

 The <CODE>connect</CODE> method initiates communication with the source.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD>java.io.IOException - Thrown if there are IO problems
 when <CODE>connect</CODE> is called.</DL>
</DD>
</DL>
<HR>

<A NAME="disconnect()"><!-- --></A><H3>
disconnect</H3>
<PRE>
public abstract void <B>disconnect</B>()</PRE>
<DL>
<DD>Close the connection to the source described by the locator.
 <p>
 The <CODE>disconnect</CODE> method frees resources used to maintain a
 connection to the source.
 If no resources are in use, <CODE>disconnect</CODE> is ignored.
 If <CODE>stop</CODE> hasn't already been called,
 calling <CODE>disconnect</CODE> implies a stop.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="start()"><!-- --></A><H3>
start</H3>
<PRE>
public abstract void <B>start</B>()
                    throws java.io.IOException</PRE>
<DL>
<DD>Initiate data-transfer. The <CODE>start</CODE> method must be
 called before data is available.
(You must call <CODE>connect</CODE> before calling <CODE>start</CODE>.)<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD>java.io.IOException - Thrown if there are IO problems with the source
 when <CODE>start</CODE> is called.</DL>
</DD>
</DL>
<HR>

<A NAME="stop()"><!-- --></A><H3>
stop</H3>
<PRE>
public abstract void <B>stop</B>()
                   throws java.io.IOException</PRE>
<DL>
<DD>Stop the data-transfer.
 If the source has not been connected and started,
 <CODE>stop</CODE> does nothing.<DD><DL>
</DL>
</DD>
</DL>
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