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| Class CustomStringPool</H2>
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| <PRE>
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| java.lang.Object
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| |
|
| +--<A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html">org.apache.xml.dtm.ref.DTMStringPool</A>
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| |
|
| +--<B>org.apache.xml.dtm.ref.CustomStringPool</B>
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| </PRE>
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| <DL>
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| <DT>public class <B>CustomStringPool</B><DT>extends <A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html">DTMStringPool</A></DL>
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|
|
| <P>
|
| <p>CustomStringPool is an example of appliction provided data structure |
| for a DTM implementation to hold symbol references, e.g. elelment names. |
| It will follow the DTMDStringPool interface and use two simple methods |
| indexToString(int i) and stringToIndex(Sring s) to map between a set of |
| string values and a set of integer index values. Therefore, an application |
| may improve DTM processing speed by substituting the DTM symbol resolution |
| tables with application specific quick symbol resolution tables.</p> |
| |
| %REVIEW% The only difference between this an DTMStringPool seems to be that |
| it uses a java.lang.Hashtable full of Integers rather than implementing its |
| own hashing. Joe deliberately avoided that approach when writing |
| DTMStringPool, since it is both much more memory-hungry and probably slower |
| -- especially in JDK 1.1.x, where Hashtable is synchronized. We need to |
| either justify this implementation or discard it. |
| |
| %REVIEW% Xalan-J has dropped support for 1.1.x and we can now use |
| the colletion classes in 1.2, such as java.util.HashMap which is |
| similar to java.util.Hashtable but not synchronized. For performance reasons |
| one could change m_stringToInt to be a HashMap, but is it OK to do that? |
| Are such CustomStringPool objects already used in a thread-safe way? |
| |
| <p>Status: In progress, under discussion.</p>
|
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| <CODE>static int</CODE></FONT></TD>
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| <TD><CODE><B><A HREF="../../../../../org/apache/xml/dtm/ref/CustomStringPool.html#NULL">NULL</A></B></CODE>
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| <A NAME="fields_inherited_from_class_org.apache.xml.dtm.ref.DTMStringPool"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
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| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
|
| <TD><B>Fields inherited from class org.apache.xml.dtm.ref.<A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html">DTMStringPool</A></B></TD>
|
| </TR>
|
| <TR BGCOLOR="white" CLASS="TableRowColor">
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| <TD><CODE><A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html#NULL">NULL</A></CODE></TD>
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| <TD><CODE><B><A HREF="../../../../../org/apache/xml/dtm/ref/CustomStringPool.html#CustomStringPool()">CustomStringPool</A></B>()</CODE>
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| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| <CODE> java.lang.String</CODE></FONT></TD>
|
| <TD><CODE><B><A HREF="../../../../../org/apache/xml/dtm/ref/CustomStringPool.html#indexToString(int)">indexToString</A></B>(int i)</CODE>
|
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| <CODE> void</CODE></FONT></TD>
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| <TD><CODE><B><A HREF="../../../../../org/apache/xml/dtm/ref/CustomStringPool.html#removeAllElements()">removeAllElements</A></B>()</CODE>
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| <CODE> int</CODE></FONT></TD>
|
| <TD><CODE><B><A HREF="../../../../../org/apache/xml/dtm/ref/CustomStringPool.html#stringToIndex(java.lang.String)">stringToIndex</A></B>(java.lang.String s)</CODE>
|
|
|
| <BR>
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| </TABLE>
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| <A NAME="methods_inherited_from_class_org.apache.xml.dtm.ref.DTMStringPool"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
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| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
|
| <TD><B>Methods inherited from class org.apache.xml.dtm.ref.<A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html">DTMStringPool</A></B></TD>
|
| </TR>
|
| <TR BGCOLOR="white" CLASS="TableRowColor">
|
| <TD><CODE><A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html#main(java.lang.String[])">main</A></CODE></TD>
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| <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
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| <TD><B>Methods inherited from class java.lang.Object</B></TD>
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| </TR>
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| <TR BGCOLOR="white" CLASS="TableRowColor">
|
| <TD><CODE>equals,
|
| getClass,
|
| hashCode,
|
| notify,
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| notifyAll,
|
| toString,
|
| wait,
|
| wait,
|
| wait</CODE></TD>
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|
| <A NAME="NULL"><!-- --></A><H3>
|
| NULL</H3>
|
| <PRE>
|
| public static final int <B>NULL</B></PRE>
|
| <DL>
|
| </DL>
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|
|
| <!-- ========= CONSTRUCTOR DETAIL ======== -->
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|
| <A NAME="CustomStringPool()"><!-- --></A><H3>
|
| CustomStringPool</H3>
|
| <PRE>
|
| public <B>CustomStringPool</B>()</PRE>
|
| <DL>
|
| </DL>
|
|
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|
| <A NAME="removeAllElements()"><!-- --></A><H3>
|
| removeAllElements</H3>
|
| <PRE>
|
| public void <B>removeAllElements</B>()</PRE>
|
| <DL>
|
| <DD><DL>
|
| <DT><B>Overrides:</B><DD><A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html#removeAllElements()">removeAllElements</A> in class <A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html">DTMStringPool</A></DL>
|
| </DD>
|
| </DL>
|
| <HR>
|
|
|
| <A NAME="indexToString(int)"><!-- --></A><H3>
|
| indexToString</H3>
|
| <PRE>
|
| public java.lang.String <B>indexToString</B>(int i) |
| throws java.lang.ArrayIndexOutOfBoundsException</PRE>
|
| <DL>
|
| <DD><DL>
|
| <DT><B>Returns:</B><DD>string whose value is uniquely identified by this integer index.<DT><B>Throws:</B><DD>java.lang.ArrayIndexOutOfBoundsException - if index doesn't map to a string.<DT><B>Overrides:</B><DD><A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html#indexToString(int)">indexToString</A> in class <A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html">DTMStringPool</A></DL>
|
| </DD>
|
| </DL>
|
| <HR>
|
|
|
| <A NAME="stringToIndex(java.lang.String)"><!-- --></A><H3>
|
| stringToIndex</H3>
|
| <PRE>
|
| public int <B>stringToIndex</B>(java.lang.String s)</PRE>
|
| <DL>
|
| <DD><DL>
|
| <DT><B>Returns:</B><DD>integer index uniquely identifying the value of this string.<DT><B>Overrides:</B><DD><A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html#stringToIndex(java.lang.String)">stringToIndex</A> in class <A HREF="../../../../../org/apache/xml/dtm/ref/DTMStringPool.html">DTMStringPool</A></DL>
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