inputstreammessageelement.html

jxta的api库

<A NAME="databytes"><!-- --></A><H3>
databytes</H3>
<PRE>
protected java.util.List <B>databytes</B></PRE>
<DL>
<DD>The bytes of this element.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="length"><!-- --></A><H3>
length</H3>
<PRE>
protected long <B>length</B></PRE>
<DL>
<DD>The length of the data.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="cachedHashCode"><!-- --></A><H3>
cachedHashCode</H3>
<PRE>
protected transient int <B>cachedHashCode</B></PRE>
<DL>
<DD>Cached Hash Code
<P>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="InputStreamMessageElement()"><!-- --></A><H3>
InputStreamMessageElement</H3>
<PRE>
protected <B>InputStreamMessageElement</B>()</PRE>
<DL>
<DD>non-public constructor.
<P>
</DL>
<HR>

<A NAME="InputStreamMessageElement(java.lang.String, net.jxta.document.MimeMediaType, java.io.InputStream, net.jxta.endpoint.MessageElement)"><!-- --></A><H3>
InputStreamMessageElement</H3>
<PRE>
public <B>InputStreamMessageElement</B>(java.lang.String&nbsp;name,
                                 <A HREF="../../../net/jxta/document/MimeMediaType.html" title="class in net.jxta.document">MimeMediaType</A>&nbsp;type,
                                 java.io.InputStream&nbsp;in,
                                 <A HREF="../../../net/jxta/endpoint/MessageElement.html" title="class in net.jxta.endpoint">MessageElement</A>&nbsp;sig)
                          throws java.io.IOException</PRE>
<DL>
<DD>Create a new MessageElement. This constructor copies the data as needed
  and closes the stream upon completion. If the stream does not support
  the "mark" operation then the data is copied immediately and the stream
  will be closed.
<P>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - Name of the MessageElement. May be the empty string ("") if
 the MessageElement is not named.<DD><CODE>type</CODE> - Type of the MessageElement. null is the same as specifying
 the type "Application/Octet-stream".<DD><CODE>in</CODE> - the stream containing the body of the MessageElement. The
 stream will be closed by the MessageElement.<DD><CODE>sig</CODE> - optional message digest/digital signature elemnent or null if
 no signature is desired.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - If there is a problem reading from the source stream.</DL>
<HR>

<A NAME="InputStreamMessageElement(java.lang.String, net.jxta.document.MimeMediaType, java.io.InputStream, long, net.jxta.endpoint.MessageElement)"><!-- --></A><H3>
InputStreamMessageElement</H3>
<PRE>
public <B>InputStreamMessageElement</B>(java.lang.String&nbsp;name,
                                 <A HREF="../../../net/jxta/document/MimeMediaType.html" title="class in net.jxta.document">MimeMediaType</A>&nbsp;type,
                                 java.io.InputStream&nbsp;in,
                                 long&nbsp;len,
                                 <A HREF="../../../net/jxta/endpoint/MessageElement.html" title="class in net.jxta.endpoint">MessageElement</A>&nbsp;sig)
                          throws java.io.IOException</PRE>
<DL>
<DD>Create a new Message Element.
<P>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - Name of the MessageElement. May be the empty string ("") if
 the MessageElement is not named.<DD><CODE>type</CODE> - Type of the MessageElement. null is the same as specifying
 the type "Application/Octet-stream".<DD><CODE>in</CODE> - the stream containing the body of the MessageElement.
 The stream will <b>NOT</b> be closed unless EOF is unexpectedly reached.<DD><CODE>len</CODE> - The size of the Element will be limited to len bytes
    from the stream. If you are using the stream interface and know
    the size of the stream, specifying it here improves performance
 and space effciency a lot. The stream must contain at least
 <code>len</code> bytes.<DD><CODE>sig</CODE> - optional message digest/digital signature elemnent or null if
 no signature is desired.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there is a problem reading from the source stream</DL>

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

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<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object&nbsp;target)</PRE>
<DL>
<DD>

  <p/>Elements are considered equal if they have the same name, type and
  signatures. Element data is not considered by this implementation as
  it is mostly intended for subclass use.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html#equals(java.lang.Object)">equals</A></CODE> in class <CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html" title="class in net.jxta.endpoint">MessageElement</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html#hashCode()">hashCode</A></CODE> in class <CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html" title="class in net.jxta.endpoint">MessageElement</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getByteLength()"><!-- --></A><H3>
getByteLength</H3>
<PRE>
public long <B>getByteLength</B>()</PRE>
<DL>
<DD>Returns the size of the element data in bytes.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html#getByteLength()">getByteLength</A></CODE> in class <CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html" title="class in net.jxta.endpoint">MessageElement</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>long containing the size of the element data.</DL>
</DD>
</DL>
<HR>

<A NAME="getStream()"><!-- --></A><H3>
getStream</H3>
<PRE>
public java.io.InputStream <B>getStream</B>()
                              throws java.io.IOException</PRE>
<DL>
<DD>Returns the stream of bytes which represents the content of this
 <code>Document</code>.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>An <CODE>InputStream</CODE> containing the bytes
 of this <code>Document</code>.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="sendToStream(java.io.OutputStream)"><!-- --></A><H3>
sendToStream</H3>
<PRE>
public void <B>sendToStream</B>(java.io.OutputStream&nbsp;sendTo)
                  throws java.io.IOException</PRE>
<DL>
<DD>Send the contents of this <code>Document</code> to the specified stream.

 <p/>This version probably has sub-optimal performance. Sub-classes
 should override this implementation.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../net/jxta/document/Document.html#sendToStream(java.io.OutputStream)">sendToStream</A></CODE> in interface <CODE><A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document">Document</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html#sendToStream(java.io.OutputStream)">sendToStream</A></CODE> in class <CODE><A HREF="../../../net/jxta/endpoint/MessageElement.html" title="class in net.jxta.endpoint">MessageElement</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="CopyToDataBytes(java.io.InputStream, long)"><!-- --></A><H3>
CopyToDataBytes</H3>
<PRE>
protected java.util.List <B>CopyToDataBytes</B>(java.io.InputStream&nbsp;in,
                                         long&nbsp;limit)
                                  throws java.io.IOException</PRE>
<DL>
<DD>Copy data from a stream with best possible effciency. Unfortunately,
  this still results in a lot of copying since we have often have no
 fore-knowledge of the length of the stream.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>in</CODE> - the stream to copy from<DD><CODE>limit</CODE> - the maximum number of bytes to copy from the stream.
 Long.LONG_MAX will read until EOF.
<DT><B>Returns:</B><DD>an array of byte arrays containing the data.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there is a problem reading from the stream.</DL>
</DD>
</DL>
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