jxtamessagemessageelement.html

jxta的api库

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<A NAME="msg"><!-- --></A><H3>
msg</H3>
<PRE>
protected <A HREF="../../../../net/jxta/endpoint/Message.html" title="class in net.jxta.endpoint">Message</A> <B>msg</B></PRE>
<DL>
<DD>The Message which is the data for this message element.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="serial"><!-- --></A><H3>
serial</H3>
<PRE>
protected transient <A HREF="../../../../net/jxta/impl/endpoint/WireFormatMessage.html" title="interface in net.jxta.impl.endpoint">WireFormatMessage</A> <B>serial</B></PRE>
<DL>
<DD>A serialized form of the message.
<P>
<DL>
</DL>
</DL>

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<A NAME="JxtaMessageMessageElement(java.lang.String, net.jxta.document.MimeMediaType, net.jxta.endpoint.Message, net.jxta.endpoint.MessageElement)"><!-- --></A><H3>
JxtaMessageMessageElement</H3>
<PRE>
public <B>JxtaMessageMessageElement</B>(java.lang.String&nbsp;name,
                                 <A HREF="../../../../net/jxta/document/MimeMediaType.html" title="class in net.jxta.document">MimeMediaType</A>&nbsp;type,
                                 <A HREF="../../../../net/jxta/endpoint/Message.html" title="class in net.jxta.endpoint">Message</A>&nbsp;msg,
                                 <A HREF="../../../../net/jxta/endpoint/MessageElement.html" title="class in net.jxta.endpoint">MessageElement</A>&nbsp;sig)</PRE>
<DL>
<DD>Create a new Message Element. The contents of the provided byte array
 are <b>not</b> copied during construction.
<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>msg</CODE> - A message which will be used as the element content for this
 message.<DD><CODE>sig</CODE> - optional message digest/digital signature elemnent or null if
 no signature is desired.</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="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>

  <p/>Returns a String representation of the element data. The
  <code>'charset'</code> parameter of the message element's mimetype, if
  any, is used to determine encoding. If the charset specified is
  unsupported then the default enconding will be used.

  <p/>synchronized for caching purposes.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/jxta/endpoint/MessageElement.html#toString()">toString</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="getBytes(boolean)"><!-- --></A><H3>
getBytes</H3>
<PRE>
public byte[] <B>getBytes</B>(boolean&nbsp;copy)</PRE>
<DL>
<DD>Returns a byte array which contains the element data. The byte array
  returned <b>may be shared amongst all copies of the element</b>,
  do not modify it. The <code>copy</code> parameter allows you to request a
  private, modifiable copy of the element data.

  <p/>This implementation builds the byte array from the stream.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/jxta/endpoint/MessageElement.html#getBytes(boolean)">getBytes</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>Parameters:</B><DD><CODE>copy</CODE> - If true then the result can be modified without damaging the state of this
 MessageElement. If false, then the result may be a shared copy of the data and
 should be considered read-only.
<DT><B>Returns:</B><DD>byte[] Contents of message element.</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="getBytes()"><!-- --></A><H3>
getBytes</H3>
<PRE>
public byte[] <B>getBytes</B>()</PRE>
<DL>
<DD>{@inheritDoc}
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getMessage()"><!-- --></A><H3>
getMessage</H3>
<PRE>
public <A HREF="../../../../net/jxta/endpoint/Message.html" title="class in net.jxta.endpoint">Message</A> <B>getMessage</B>()</PRE>
<DL>
<DD>Returns the message which backs this element.

  <p/>Currently the message is modifiable, but should not be modified to
  obey the contract of MessageElement.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Returns the message which backs this element.</DL>
</DD>
</DL>
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