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EscapeReference (Apache Velocity 1.5 API)
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org.apache.velocity.app.event.implement</FONT>
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Class EscapeReference</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.velocity.app.event.implement.EscapeReference</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../../org/apache/velocity/app/event/EventHandler.html" title="interface in org.apache.velocity.app.event">EventHandler</A>, <A HREF="../../../../../../org/apache/velocity/app/event/ReferenceInsertionEventHandler.html" title="interface in org.apache.velocity.app.event">ReferenceInsertionEventHandler</A>, <A HREF="../../../../../../org/apache/velocity/util/RuntimeServicesAware.html" title="interface in org.apache.velocity.util">RuntimeServicesAware</A></DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeHtmlReference.html" title="class in org.apache.velocity.app.event.implement">EscapeHtmlReference</A>, <A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeJavaScriptReference.html" title="class in org.apache.velocity.app.event.implement">EscapeJavaScriptReference</A>, <A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeSqlReference.html" title="class in org.apache.velocity.app.event.implement">EscapeSqlReference</A>, <A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeXmlReference.html" title="class in org.apache.velocity.app.event.implement">EscapeXmlReference</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public abstract class <B>EscapeReference</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../../../org/apache/velocity/app/event/ReferenceInsertionEventHandler.html" title="interface in org.apache.velocity.app.event">ReferenceInsertionEventHandler</A>, <A HREF="../../../../../../org/apache/velocity/util/RuntimeServicesAware.html" title="interface in org.apache.velocity.util">RuntimeServicesAware</A></DL>
</PRE>
<P>
Base class for escaping references. To use it, override the following methods:
<DL>
<DT><code>String escape(String text)</code></DT>
<DD>escape the provided text</DD>
<DT><code>String getMatchAttribute()</code></DT>
<DD>retrieve the configuration attribute used to match references (see below)</DD>
</DL>
<P>By default, all references are escaped. However, by setting the match attribute
in the configuration file to a regular expression, users can specify which references
to escape. For example the following configuration property tells the EscapeSqlReference
event handler to only escape references that start with "sql".
(e.g. <code>$sql</code>, <code>$sql.toString(),</code>, etc).
<PRE>
<CODE>eventhandler.escape.sql.match = /sql.*<!-- -->/
</CODE>
</PRE>
<!-- note: ignore empty HTML comment above - breaks up star slash avoiding javadoc end -->
Regular expressions should follow the "Perl5" format used by the ORO regular expression
library. More info is at
<a href="http://jakarta.apache.org/oro/api/org/apache/oro/text/perl/package-summary.html">http://jakarta.apache.org/oro/api/org/apache/oro/text/perl/package-summary.html</a>.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Id: EscapeReference.java 470256 2006-11-02 07:20:36Z wglass $</DD>
<DT><B>Author:</B></DT>
<DD><a href="mailto:wglass@forio.com">Will Glass-Husain </a></DD>
</DL>
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<TD><CODE><A HREF="../../../../../../org/apache/velocity/app/event/ReferenceInsertionEventHandler.referenceInsertExecutor.html" title="class in org.apache.velocity.app.event">ReferenceInsertionEventHandler.referenceInsertExecutor</A></CODE></TD>
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<TD><CODE><B><A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeReference.html#EscapeReference()">EscapeReference</A></B>()</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>protected abstract &nbsp;<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeReference.html#escape(java.lang.Object)">escape</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;text)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Escape the given text.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected abstract &nbsp;<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeReference.html#getMatchAttribute()">getMatchAttribute</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Specify the configuration attribute that specifies the
regular expression.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../../../../../org/apache/velocity/runtime/RuntimeServices.html" title="interface in org.apache.velocity.runtime">RuntimeServices</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeReference.html#getRuntimeServices()">getRuntimeServices</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieve a reference to RuntimeServices.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeReference.html#referenceInsert(java.lang.String, java.lang.Object)">referenceInsert</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;reference,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Escape the provided text if it matches the configured regular expression.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/velocity/app/event/implement/EscapeReference.html#setRuntimeServices(org.apache.velocity.runtime.RuntimeServices)">setRuntimeServices</A></B>(<A HREF="../../../../../../org/apache/velocity/runtime/RuntimeServices.html" title="interface in org.apache.velocity.runtime">RuntimeServices</A>&nbsp;rs)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called automatically when event cartridge is initialized.</TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH>
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<TD><CODE><A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<A NAME="EscapeReference()"><!-- --></A><H3>
EscapeReference</H3>
<PRE>
public <B>EscapeReference</B>()</PRE>
<DL>
</DL>
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<A NAME="escape(java.lang.Object)"><!-- --></A><H3>
escape</H3>
<PRE>
protected abstract <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>escape</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;text)</PRE>
<DL>
<DD>Escape the given text. Override this in a subclass to do the actual
escaping.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>text</CODE> - the text to escape
<DT><B>Returns:</B><DD>the escaped text</DL>
</DD>
</DL>
<HR>
<A NAME="getMatchAttribute()"><!-- --></A><H3>
getMatchAttribute</H3>
<PRE>
protected abstract <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getMatchAttribute</B>()</PRE>
<DL>
<DD>Specify the configuration attribute that specifies the
regular expression. Ideally should be in a form
<pre><code>eventhandler.escape.XYZ.match</code></pre>
<p>where <code>XYZ</code> is the type of escaping being done.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>configuration attribute</DL>
</DD>
</DL>
<HR>
<A NAME="referenceInsert(java.lang.String, java.lang.Object)"><!-- --></A><H3>
referenceInsert</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>referenceInsert</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;reference,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value)</PRE>
<DL>
<DD>Escape the provided text if it matches the configured regular expression.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/velocity/app/event/ReferenceInsertionEventHandler.html#referenceInsert(java.lang.String, java.lang.Object)">referenceInsert</A></CODE> in interface <CODE><A HREF="../../../../../../org/apache/velocity/app/event/ReferenceInsertionEventHandler.html" title="interface in org.apache.velocity.app.event">ReferenceInsertionEventHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>reference</CODE> - <DD><CODE>value</CODE> -
<DT><B>Returns:</B><DD>Escaped text.</DL>
</DD>
</DL>
<HR>
<A NAME="setRuntimeServices(org.apache.velocity.runtime.RuntimeServices)"><!-- --></A><H3>
setRuntimeServices</H3>
<PRE>
public void <B>setRuntimeServices</B>(<A HREF="../../../../../../org/apache/velocity/runtime/RuntimeServices.html" title="interface in org.apache.velocity.runtime">RuntimeServices</A>&nbsp;rs)</PRE>
<DL>
<DD>Called automatically when event cartridge is initialized.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/velocity/util/RuntimeServicesAware.html#setRuntimeServices(org.apache.velocity.runtime.RuntimeServices)">setRuntimeServices</A></CODE> in interface <CODE><A HREF="../../../../../../org/apache/velocity/util/RuntimeServicesAware.html" title="interface in org.apache.velocity.util">RuntimeServicesAware</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rs</CODE> - instance of RuntimeServices</DL>
</DD>
</DL>
<HR>
<A NAME="getRuntimeServices()"><!-- --></A><H3>
getRuntimeServices</H3>
<PRE>
protected <A HREF="../../../../../../org/apache/velocity/runtime/RuntimeServices.html" title="interface in org.apache.velocity.runtime">RuntimeServices</A> <B>getRuntimeServices</B>()</PRE>
<DL>
<DD>Retrieve a reference to RuntimeServices. Use this for checking additional
configuration properties.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>The current runtime services object.</DL>
</DD>
</DL>
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