gtdeltaimpl.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

            <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;before,
            <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;after)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Does the right thing, aka magic.
 
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<B>Method Summary</B></FONT></TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/event/GTDeltaImpl.html#accept(org.geotools.event.GTDeltaVisitor)">accept</A></B>(<A HREF="../../../org/geotools/event/GTDeltaVisitor.html" title="interface in org.geotools.event">GTDeltaVisitor</A>&nbsp;visitor)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accepts the given visitor.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/event/GTDeltaImpl.html#getChildren()">getChildren</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds and returns deltas for specificly changed constructs.
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<CODE>&nbsp;<A HREF="../../../org/geotools/event/GTDelta.Kind.html" title="class in org.geotools.event">GTDelta.Kind</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/event/GTDeltaImpl.html#getKind()">getKind</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the kind of this delta.

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<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/event/GTDeltaImpl.html#getName()">getName</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Name of property being affected.
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<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/event/GTDeltaImpl.html#getOldValue()">getOldValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construct being replaced with a changed, getValue is the replacing value.</TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/event/GTDeltaImpl.html#getPosition()">getPosition</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Position in a "list" where the change occured, or NO_INDEX.</TD>
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<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/event/GTDeltaImpl.html#getValue()">getValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Affected construct, getKind & getChildern
 indicate specific details of the change.</TD>
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<TD><B>Methods inherited from class <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<B>Constructor Detail</B></FONT></TD>
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<A NAME="GTDeltaImpl(org.geotools.event.GTNote, java.lang.Object, java.lang.Object)"><!-- --></A><H3>
GTDeltaImpl</H3>
<PRE>
public <B>GTDeltaImpl</B>(<A HREF="../../../org/geotools/event/GTNote.html" title="interface in org.geotools.event">GTNote</A>&nbsp;notification,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;before,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;after)</PRE>
<DL>
<DD>Does the right thing, aka magic.
 
 <p>
 This constructor is provided to make things easier, if your experience
 is not magic please skip this and try the next constructor.
 </p>
 
 <p>
 Magic:
 
 <ul>
 <li>
 NO_CHANGE: before == null     after == null
 </li>
 <li>
 NO_CHANGE:         before == after
 </li>
 <li>
 REMOVED:   before == obj      after == null
 </li>
 <li>
 ADDED:     before == null     after == obj
 </li>
 <li>
 CHANGED:           before != after
 </li>
 </ul>
 </p>
<P>
<DT><B>Parameters:</B><DD><CODE>notification</CODE> - <DD><CODE>before</CODE> - <DD><CODE>after</CODE> - </DL>
<HR>

<A NAME="GTDeltaImpl(org.geotools.event.GTNote, org.geotools.event.GTDelta.Kind, java.lang.Object, java.lang.Object)"><!-- --></A><H3>
GTDeltaImpl</H3>
<PRE>
public <B>GTDeltaImpl</B>(<A HREF="../../../org/geotools/event/GTNote.html" title="interface in org.geotools.event">GTNote</A>&nbsp;notification,
                   <A HREF="../../../org/geotools/event/GTDelta.Kind.html" title="class in org.geotools.event">GTDelta.Kind</A>&nbsp;kind,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;oldValue)</PRE>
<DL>
<DD>Create a delta, with no children.
<P>
<DT><B>Parameters:</B><DD><CODE>notification</CODE> - <DD><CODE>kind</CODE> - <DD><CODE>value</CODE> - <DD><CODE>oldValue</CODE> - </DL>
<HR>

<A NAME="GTDeltaImpl(org.geotools.event.GTNote, org.geotools.event.GTDelta.Kind, java.lang.Object, java.lang.Object, org.geotools.event.GTDelta)"><!-- --></A><H3>
GTDeltaImpl</H3>
<PRE>
public <B>GTDeltaImpl</B>(<A HREF="../../../org/geotools/event/GTNote.html" title="interface in org.geotools.event">GTNote</A>&nbsp;notification,
                   <A HREF="../../../org/geotools/event/GTDelta.Kind.html" title="class in org.geotools.event">GTDelta.Kind</A>&nbsp;kind,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;oldValue,
                   <A HREF="../../../org/geotools/event/GTDelta.html" title="interface in org.geotools.event">GTDelta</A>&nbsp;delta)</PRE>
<DL>
<DD>Create a delta with with a list element child delta.
 
 <p>
 This can be used to communicate a batch of changes, such as adding and
 removing sections from a list, or the results of a transformation.
 </p>
 
 <p></p>
<P>
<DT><B>Parameters:</B><DD><CODE>notification</CODE> - <DD><CODE>kind</CODE> - <DD><CODE>value</CODE> - <DD><CODE>oldValue</CODE> - <DD><CODE>delta</CODE> - </DL>
<HR>

<A NAME="GTDeltaImpl(org.geotools.event.GTNote, org.geotools.event.GTDelta.Kind, java.lang.Object, java.lang.Object, java.util.List)"><!-- --></A><H3>
GTDeltaImpl</H3>
<PRE>
public <B>GTDeltaImpl</B>(<A HREF="../../../org/geotools/event/GTNote.html" title="interface in org.geotools.event">GTNote</A>&nbsp;notification,
                   <A HREF="../../../org/geotools/event/GTDelta.Kind.html" title="class in org.geotools.event">GTDelta.Kind</A>&nbsp;kind,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;oldValue,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A>&nbsp;children)</PRE>
<DL>
<DD>Create a delta, completely specifying all values.
<P>
<DT><B>Parameters:</B><DD><CODE>notification</CODE> - <DD><CODE>kind</CODE> - <DD><CODE>value</CODE> - <DD><CODE>oldValue</CODE> - <DD><CODE>children</CODE> - </DL>

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<A NAME="getName()"><!-- --></A><H3>
getName</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getName</B>()</PRE>