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Java 2 Platform EE v1.3: Class URLDataSource
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javax.activation</FONT>
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Class URLDataSource</H2>
<PRE>
java.lang.Object
|
+--<B>javax.activation.URLDataSource</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../javax/activation/DataSource.html">DataSource</A></DD>
</DL>
<HR>
<DL>
<DT>public class <B>URLDataSource</B><DT>extends java.lang.Object<DT>implements <A HREF="../../javax/activation/DataSource.html">DataSource</A></DL>
<P>
The URLDataSource class provides an object that wraps a <code>URL</code>
object in a DataSource interface. URLDataSource simplifies the handling
of data described by URLs within the JavaBeans Activation Framework
because this class can be used to create new DataHandlers. <i>NOTE: The
DataHandler object creates a URLDataSource internally,
when it is constructed with a URL.</i>
<P>
<DL>
<DT><B>See Also: </B><DD><A HREF="../../javax/activation/DataSource.html"><CODE>DataSource</CODE></A>,
<A HREF="../../javax/activation/DataHandler.html"><CODE>DataHandler</CODE></A></DL>
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<TD><CODE><B><A HREF="../../javax/activation/URLDataSource.html#URLDataSource(java.net.URL)">URLDataSource</A></B>(java.net.URL url)</CODE>
<BR>
URLDataSource constructor.</TD>
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<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/activation/URLDataSource.html#getContentType()">getContentType</A></B>()</CODE>
<BR>
Returns the value of the URL content-type header field.</TD>
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<CODE> java.io.InputStream</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/activation/URLDataSource.html#getInputStream()">getInputStream</A></B>()</CODE>
<BR>
The getInputStream method from the URL.</TD>
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<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/activation/URLDataSource.html#getName()">getName</A></B>()</CODE>
<BR>
Calls the <code>getFile</code> method on the URL used to
instantiate the object.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.io.OutputStream</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/activation/URLDataSource.html#getOutputStream()">getOutputStream</A></B>()</CODE>
<BR>
The getOutputStream method from the URL.</TD>
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<CODE> java.net.URL</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/activation/URLDataSource.html#getURL()">getURL</A></B>()</CODE>
<BR>
Return the URL used to create this DataSource.</TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="URLDataSource(java.net.URL)"><!-- --></A><H3>
URLDataSource</H3>
<PRE>
public <B>URLDataSource</B>(java.net.URL url)</PRE>
<DL>
<DD>URLDataSource constructor. The URLDataSource class will
not open a connection to the URL until a method requiring it
to do so is called.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>url</CODE> - The URL to be encapsulated in this object.</DL>
</DD>
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<A NAME="getContentType()"><!-- --></A><H3>
getContentType</H3>
<PRE>
public java.lang.String <B>getContentType</B>()</PRE>
<DL>
<DD>Returns the value of the URL content-type header field.
It calls the URL's <code>URLConnection.getContentType</code> method
after retrieving a URLConnection object.
<i>Note: this method attempts to call the <code>openConnection</code>
method on the URL. If this method fails, or if a content type is not
returned from the URLConnection, getContentType returns
"application/octet-stream" as the content type.</i><DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../javax/activation/DataSource.html#getContentType()">getContentType</A></CODE> in interface <CODE><A HREF="../../javax/activation/DataSource.html">DataSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the content type.</DL>
</DD>
</DL>
<HR>
<A NAME="getName()"><!-- --></A><H3>
getName</H3>
<PRE>
public java.lang.String <B>getName</B>()</PRE>
<DL>
<DD>Calls the <code>getFile</code> method on the URL used to
instantiate the object.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../javax/activation/DataSource.html#getName()">getName</A></CODE> in interface <CODE><A HREF="../../javax/activation/DataSource.html">DataSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the result of calling the URL's getFile method.</DL>
</DD>
</DL>
<HR>
<A NAME="getInputStream()"><!-- --></A><H3>
getInputStream</H3>
<PRE>
public java.io.InputStream <B>getInputStream</B>()
throws java.io.IOException</PRE>
<DL>
<DD>The getInputStream method from the URL. Calls the
<code>openStream</code> method on the URL.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../javax/activation/DataSource.html#getInputStream()">getInputStream</A></CODE> in interface <CODE><A HREF="../../javax/activation/DataSource.html">DataSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the InputStream.</DL>
</DD>
</DL>
<HR>
<A NAME="getOutputStream()"><!-- --></A><H3>
getOutputStream</H3>
<PRE>
public java.io.OutputStream <B>getOutputStream</B>()
throws java.io.IOException</PRE>
<DL>
<DD>The getOutputStream method from the URL. First an attempt is
made to get the URLConnection object for the URL. If that
succeeds, the getOutputStream method on the URLConnection
is returned.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../javax/activation/DataSource.html#getOutputStream()">getOutputStream</A></CODE> in interface <CODE><A HREF="../../javax/activation/DataSource.html">DataSource</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the OutputStream.</DL>
</DD>
</DL>
<HR>
<A NAME="getURL()"><!-- --></A><H3>
getURL</H3>
<PRE>
public java.net.URL <B>getURL</B>()</PRE>
<DL>
<DD>Return the URL used to create this DataSource.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>The URL.</DL>
</DD>
</DL>
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