contentmetadata.html

jxta-cms-doc-2.4.zip是jxta-cms-SRC-2.4.zip配套的学习文档。

<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if query was not formatted properly.</DL>
</DD>
</DL>
<HR>

<A NAME="getConstructor()"><!-- --></A><H3>
getConstructor</H3>
<PRE>
public static <A HREF="../../../../net/jxta/share/metadata/ContentMetadataConstructor.html" title="interface in net.jxta.share.metadata">ContentMetadataConstructor</A> <B>getConstructor</B>()</PRE>
<DL>
<DD>Get a ContentMetadataConstructor that can be used to create instances of
 this class, or null if no such object can be created.  This method
 should be overridden if there is a way of constructing this
 ContentMetadata class using an Element.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="init(net.jxta.document.Element)"><!-- --></A><H3>
init</H3>
<PRE>
protected void <B>init</B>(<A HREF="http://platform.jxta.org/nonav/java/api/net/jxta/document/Element.html" title="class or interface in net.jxta.document">Element</A>&nbsp;metadata)
             throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></PRE>
<DL>
<DD>Initialize the <code>name</code> <code>content_type</code> and
 <code>location</code> fields from a <code>&lt;metadata></code> block.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>metadata</CODE> - the <code>&lt;metadata></code> block
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if
 <code>metadata.getKey().equals(EN_METADATA)</code> returns false.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/NullPointerException.html" title="class or interface in java.lang">NullPointerException</A></CODE> - if <code>metadata</code> is null</DL>
</DD>
</DL>
<HR>

<A NAME="getName()"><!-- --></A><H3>
getName</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getName</B>()</PRE>
<DL>
<DD>Return the name of the metadata scheme being used by this object, or
 null if unspecified.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getLocation()"><!-- --></A><H3>
getLocation</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getLocation</B>()</PRE>
<DL>
<DD>Get the location of the resource that is needed to parse and query 
 metadata using this scheme.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a String representation of the URL location of the resource, or
 null if unspecified</DL>
</DD>
</DL>
<HR>

<A NAME="getContentType()"><!-- --></A><H3>
getContentType</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getContentType</B>()</PRE>
<DL>
<DD>Get the content type of the metadata returned by getValue()
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getValue()"><!-- --></A><H3>
getValue</H3>
<PRE>
public abstract <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getValue</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the string representation of the metadata payload, or null if it
 has no string representation.</DL>
</DD>
</DL>
<HR>

<A NAME="appendDocument(net.jxta.document.StructuredDocument, net.jxta.document.Element)"><!-- --></A><H3>
appendDocument</H3>
<PRE>
public void <B>appendDocument</B>(<A HREF="http://platform.jxta.org/nonav/java/api/net/jxta/document/StructuredDocument.html" title="class or interface in net.jxta.document">StructuredDocument</A>&nbsp;adv,
                           <A HREF="http://platform.jxta.org/nonav/java/api/net/jxta/document/Element.html" title="class or interface in net.jxta.document">Element</A>&nbsp;el)</PRE>
<DL>
<DD>Insert this metadata element into an advertisement
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>adv</CODE> - a StructuredDocument representation of the advertisement<DD><CODE>el</CODE> - the element in adv to insert this metadata element into</DL>
</DD>
</DL>
<HR>

<A NAME="appendElements(net.jxta.document.StructuredDocument, net.jxta.document.Element)"><!-- --></A><H3>
appendElements</H3>
<PRE>
protected void <B>appendElements</B>(<A HREF="http://platform.jxta.org/nonav/java/api/net/jxta/document/StructuredDocument.html" title="class or interface in net.jxta.document">StructuredDocument</A>&nbsp;root,
                              <A HREF="http://platform.jxta.org/nonav/java/api/net/jxta/document/Element.html" title="class or interface in net.jxta.document">Element</A>&nbsp;child)</PRE>
<DL>
<DD>This function defines how the child elements of this metadata element
 should be inserted into an element of a StructuredDocument.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>root</CODE> - the StructuredDocument which <code>child</code> is a part of<DD><CODE>child</CODE> - the Element object into which to insert the metadata</DL>
</DD>
</DL>
<HR>

<A NAME="getStructuredDocument(net.jxta.document.MimeMediaType)"><!-- --></A><H3>
getStructuredDocument</H3>
<PRE>
public <A HREF="http://platform.jxta.org/nonav/java/api/net/jxta/document/StructuredDocument.html" title="class or interface in net.jxta.document">StructuredDocument</A> <B>getStructuredDocument</B>(<A HREF="http://platform.jxta.org/nonav/java/api/net/jxta/document/MimeMediaType.html" title="class or interface in net.jxta.document">MimeMediaType</A>&nbsp;mmt)</PRE>
<DL>
<DD>Generates a StructuredDocument representation of this metadata element
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>mmt</CODE> - the mime type of the StructuredDocument to be returned
<DT><B>Returns:</B><DD>a StructuredDocument of type <code>EN_METADATA</code> with
 containing all of the metadata information stored in this object.</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>clone</B>()
             throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/CloneNotSupportedException.html" title="class or interface in java.lang">CloneNotSupportedException</A></PRE>
<DL>
<DD>A function for generating safe copies of this ContentMetadata object.
 This particular implementation of clone() will throw a
 CloneNotSupportedException every time, but it should be overridden if
 clone() functionality is needed in a subclass.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a safe copy of this ContentMetadata object
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/CloneNotSupportedException.html" title="class or interface in java.lang">CloneNotSupportedException</A></CODE></DL>
</DD>
</DL>
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