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| org.apache.struts.taglib.tiles.util</FONT> |
| <BR> |
| Class TagUtils</H2> |
| <PRE> |
| java.lang.Object |
| | |
| +--<B>org.apache.struts.taglib.tiles.util.TagUtils</B> |
| </PRE> |
| <HR> |
| <DL> |
| <DT>public class <B>TagUtils</B><DT>extends java.lang.Object</DL> |
| |
| <P> |
| Collection of utilities. |
| This class also serves as an interface between Components and Struts. If |
| you want to rip away Struts, simply reimplement some methods in this class. |
| You can copy them from Struts. |
| <P> |
| |
| <P> |
| <DL> |
| <DT><B>Author:</B></DT> |
| <DD>Cedric Dumoulin, David Graham</DD> |
| </DL> |
| <HR> |
| |
| <P> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| |
| |
| <!-- =========== FIELD SUMMARY =========== --> |
| |
| <A NAME="field_summary"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
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| <B>Field Summary</B></FONT></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#debug">debug</A></B></CODE> |
| |
| <BR> |
| Debug flag</TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| |
| <A NAME="constructor_summary"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
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| <TD COLSPAN=2><FONT SIZE="+2"> |
| <B>Constructor Summary</B></FONT></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#TagUtils()">TagUtils</A></B>()</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ========== METHOD SUMMARY =========== --> |
| |
| <A NAME="method_summary"><!-- --></A> |
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| <TD COLSPAN=2><FONT SIZE="+2"> |
| <B>Method Summary</B></FONT></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#findAttribute(java.lang.String, javax.servlet.jsp.PageContext)">findAttribute</A></B>(java.lang.String beanName, |
| javax.servlet.jsp.PageContext pageContext)</CODE> |
| |
| <BR> |
| Search attribute in different contexts.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#getAttribute(java.lang.String, int, javax.servlet.jsp.PageContext)">getAttribute</A></B>(java.lang.String beanName, |
| int scope, |
| javax.servlet.jsp.PageContext pageContext)</CODE> |
| |
| <BR> |
| Get object from requested context.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static <A HREF="../../../../../../org/apache/struts/tiles/ComponentDefinition.html">ComponentDefinition</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#getComponentDefinition(java.lang.String, javax.servlet.jsp.PageContext)">getComponentDefinition</A></B>(java.lang.String name, |
| javax.servlet.jsp.PageContext pageContext)</CODE> |
| |
| <BR> |
| Get component definition by its name.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#getProperty(java.lang.Object, java.lang.String)">getProperty</A></B>(java.lang.Object bean, |
| java.lang.String name)</CODE> |
| |
| <BR> |
| Return the value of the specified property of the specified bean, |
| no matter which property reference format is used, with no |
| type conversions.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#getRealValueFromBean(java.lang.String, java.lang.String, java.lang.String, javax.servlet.jsp.PageContext)">getRealValueFromBean</A></B>(java.lang.String beanName, |
| java.lang.String beanProperty, |
| java.lang.String beanScope, |
| javax.servlet.jsp.PageContext pageContext)</CODE> |
| |
| <BR> |
| Locate and return the specified property of the specified bean, from |
| an optionally specified scope, in the specified page context.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#getScope(java.lang.String, int)">getScope</A></B>(java.lang.String scopeName, |
| int defaultValue)</CODE> |
| |
| <BR> |
| Get scope value from string value</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#retrieveBean(java.lang.String, java.lang.String, javax.servlet.jsp.PageContext)">retrieveBean</A></B>(java.lang.String beanName, |
| java.lang.String scopeName, |
| javax.servlet.jsp.PageContext pageContext)</CODE> |
| |
| <BR> |
| Retrieve bean from page context, using specified scope.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#saveException(javax.servlet.jsp.PageContext, java.lang.Throwable)">saveException</A></B>(javax.servlet.jsp.PageContext pageContext, |
| java.lang.Throwable exception)</CODE> |
| |
| <BR> |
| Save the specified exception as a request attribute for later use.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#setAttribute(javax.servlet.jsp.PageContext, java.lang.String, java.lang.Object)">setAttribute</A></B>(javax.servlet.jsp.PageContext pageContext, |
| java.lang.String name, |
| java.lang.Object beanValue)</CODE> |
| |
| <BR> |
| Store bean in REQUEST_SCOPE context.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/struts/taglib/tiles/util/TagUtils.html#setAttribute(javax.servlet.jsp.PageContext, java.lang.String, java.lang.Object, java.lang.String)">setAttribute</A></B>(javax.servlet.jsp.PageContext pageContext, |
| java.lang.String name, |
| java.lang.Object value, |
| java.lang.String scope)</CODE> |
| |
| <BR> |
| Store bean in requested context.</TD> |
| </TR> |
| </TABLE> |
| <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
| <TD><B>Methods inherited from class java.lang.Object</B></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD> |
| </TR> |
| </TABLE> |
| |
| <P> |
| |
| <!-- ============ FIELD DETAIL =========== --> |
| |
| <A NAME="field_detail"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=1><FONT SIZE="+2"> |
| <B>Field Detail</B></FONT></TD> |
| </TR> |
| </TABLE> |
| |
| <A NAME="debug"><!-- --></A><H3> |
| debug</H3> |
| <PRE> |
| public static final boolean <B>debug</B></PRE> |
| <DL> |
| <DD>Debug flag |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../../../../constant-values.html#org.apache.struts.taglib.tiles.util.TagUtils.debug">Constant Field Values</A></DL> |
| </DL> |
| |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| |
| <A NAME="constructor_detail"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=1><FONT SIZE="+2"> |
| <B>Constructor Detail</B></FONT></TD> |
| </TR> |
| </TABLE> |
| |
| <A NAME="TagUtils()"><!-- --></A><H3> |
| TagUtils</H3> |
| <PRE> |
| public <B>TagUtils</B>()</PRE> |
| <DL> |
| </DL> |
| |
| <!-- ============ METHOD DETAIL ========== --> |
| |
| <A NAME="method_detail"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=1><FONT SIZE="+2"> |
| <B>Method Detail</B></FONT></TD> |
| </TR> |
| </TABLE> |
| |
| <A NAME="getScope(java.lang.String, int)"><!-- --></A><H3> |
| getScope</H3> |
| <PRE> |
| public static int <B>getScope</B>(java.lang.String scopeName, |
| int defaultValue) |
| throws javax.servlet.jsp.JspException</PRE> |
| <DL> |
| <DD>Get scope value from string value |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>scopeName</CODE> - Scope as a String.<DD><CODE>defaultValue</CODE> - Returned default value, if not found. |
| <DT><B>Returns:</B><DD>Scope as an <code>int</code>, or <code>defaultValue</code> if scope is <code>null</code>. |
| <DT><B>Throws:</B> |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - Scope name is not recognized as a valid scope.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getProperty(java.lang.Object, java.lang.String)"><!-- --></A><H3> |
| getProperty</H3> |
| <PRE> |
| public static java.lang.Object <B>getProperty</B>(java.lang.Object bean, |
| java.lang.String name) |
| throws java.lang.IllegalAccessException, |
| java.lang.reflect.InvocationTargetException, |
| java.lang.NoSuchMethodException</PRE> |
| <DL> |
| <DD>Return the value of the specified property of the specified bean, |
| no matter which property reference format is used, with no |
| type conversions. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>bean</CODE> - Bean whose property is to be extracted.<DD><CODE>name</CODE> - Possibly indexed and/or nested name of the property |
| to be extracted. |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.IllegalAccessException</CODE> - if the caller does not have |
| access to the property accessor method |
| <DD><CODE>java.lang.reflect.InvocationTargetException</CODE> - if the property accessor method |
| throws an exception |
| <DD><CODE>java.lang.NoSuchMethodException</CODE> - if an accessor method for this |
| propety cannot be found</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="retrieveBean(java.lang.String, java.lang.String, javax.servlet.jsp.PageContext)"><!-- --></A><H3> |
| retrieveBean</H3> |
| <PRE> |
| public static java.lang.Object <B>retrieveBean</B>(java.lang.String beanName, |
| java.lang.String scopeName, |
| javax.servlet.jsp.PageContext pageContext) |
| throws javax.servlet.jsp.JspException</PRE> |
| <DL> |
| <DD>Retrieve bean from page context, using specified scope. |
| If scope is not set, use <code>findAttribute()</code>. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>beanName</CODE> - Name of bean to retrieve.<DD><CODE>scopeName</CODE> - Scope or <code>null</code>. If <code>null</code>, bean is searched using |
| findAttribute().<DD><CODE>pageContext</CODE> - Current pageContext. |
| <DT><B>Returns:</B><DD>Requested bean or <code>null</code> if not found. |
| <DT><B>Throws:</B> |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - Scope name is not recognized as a valid scope.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="findAttribute(java.lang.String, javax.servlet.jsp.PageContext)"><!-- --></A><H3> |
| findAttribute</H3> |
| <PRE> |
| public static java.lang.Object <B>findAttribute</B>(java.lang.String beanName, |
| javax.servlet.jsp.PageContext pageContext)</PRE> |
| <DL> |
| <DD>Search attribute in different contexts. |
| First, check in component context, then use pageContext.findAttribute(). |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>beanName</CODE> - Name of bean to retrieve.<DD><CODE>pageContext</CODE> - Current pageContext. |
| <DT><B>Returns:</B><DD>Requested bean or <code>null</code> if not found.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getAttribute(java.lang.String, int, javax.servlet.jsp.PageContext)"><!-- --></A><H3> |
| getAttribute</H3> |
| <PRE> |
| public static java.lang.Object <B>getAttribute</B>(java.lang.String beanName, |
| int scope, |
| javax.servlet.jsp.PageContext pageContext)</PRE> |
| <DL> |
| <DD>Get object from requested context. Return <code>null</code> if not found. |
| Context can be "component" or normal JSP contexts. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>beanName</CODE> - Name of bean to retrieve.<DD><CODE>scope</CODE> - Scope from which bean must be retrieved.<DD><CODE>pageContext</CODE> - Current pageContext. |
| <DT><B>Returns:</B><DD>Requested bean or <code>null</code> if not found.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getRealValueFromBean(java.lang.String, java.lang.String, java.lang.String, javax.servlet.jsp.PageContext)"><!-- --></A><H3> |
| getRealValueFromBean</H3> |
| <PRE> |
| public static java.lang.Object <B>getRealValueFromBean</B>(java.lang.String beanName, |
| java.lang.String beanProperty, |
| java.lang.String beanScope, |
| javax.servlet.jsp.PageContext pageContext) |
| throws javax.servlet.jsp.JspException</PRE> |
| <DL> |
| <DD>Locate and return the specified property of the specified bean, from |
| an optionally specified scope, in the specified page context. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pageContext</CODE> - Page context to be searched.<DD><CODE>beanName</CODE> - Name of the bean to be retrieved.<DD><CODE>beanProperty</CODE> - Name of the property to be retrieved, or |
| <code>null</code> to retrieve the bean itself.<DD><CODE>beanScope</CODE> - Scope to be searched (page, request, session, application) |
| or <code>null</code> to use <code>findAttribute()</code> instead. |
| <DT><B>Throws:</B> |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - Scope name is not recognized as a valid scope |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - if the specified bean is not found |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - if accessing this property causes an |
| IllegalAccessException, IllegalArgumentException, |
| InvocationTargetException, or NoSuchMethodException</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="setAttribute(javax.servlet.jsp.PageContext, java.lang.String, java.lang.Object, java.lang.String)"><!-- --></A><H3> |
| setAttribute</H3> |
| <PRE> |
| public static void <B>setAttribute</B>(javax.servlet.jsp.PageContext pageContext, |
| java.lang.String name, |
| java.lang.Object value, |
| java.lang.String scope) |
| throws javax.servlet.jsp.JspException</PRE> |
| <DL> |
| <DD>Store bean in requested context. |
| If scope is <code>null</code>, save it in REQUEST_SCOPE context. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pageContext</CODE> - Current pageContext.<DD><CODE>name</CODE> - Name of the bean.<DD><CODE>scope</CODE> - Scope under which bean is saved (page, request, session, application) |
| or <code>null</code> to store in <code>request()</code> instead.<DD><CODE>value</CODE> - Bean value to store. |
| <DT><B>Throws:</B> |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - Scope name is not recognized as a valid scope</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="setAttribute(javax.servlet.jsp.PageContext, java.lang.String, java.lang.Object)"><!-- --></A><H3> |
| setAttribute</H3> |
| <PRE> |
| public static void <B>setAttribute</B>(javax.servlet.jsp.PageContext pageContext, |
| java.lang.String name, |
| java.lang.Object beanValue) |
| throws javax.servlet.jsp.JspException</PRE> |
| <DL> |
| <DD>Store bean in REQUEST_SCOPE context. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pageContext</CODE> - Current pageContext.<DD><CODE>name</CODE> - Name of the bean.<DD><CODE>beanValue</CODE> - Bean value to store. |
| <DT><B>Throws:</B> |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - Scope name is not recognized as a valid scope</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="saveException(javax.servlet.jsp.PageContext, java.lang.Throwable)"><!-- --></A><H3> |
| saveException</H3> |
| <PRE> |
| public static void <B>saveException</B>(javax.servlet.jsp.PageContext pageContext, |
| java.lang.Throwable exception)</PRE> |
| <DL> |
| <DD>Save the specified exception as a request attribute for later use. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pageContext</CODE> - The PageContext for the current page.<DD><CODE>exception</CODE> - The exception to be saved.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getComponentDefinition(java.lang.String, javax.servlet.jsp.PageContext)"><!-- --></A><H3> |
| getComponentDefinition</H3> |
| <PRE> |
| public static <A HREF="../../../../../../org/apache/struts/tiles/ComponentDefinition.html">ComponentDefinition</A> <B>getComponentDefinition</B>(java.lang.String name, |
| javax.servlet.jsp.PageContext pageContext) |
| throws javax.servlet.jsp.JspException</PRE> |
| <DL> |
| <DD>Get component definition by its name. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>name</CODE> - Definition name.<DD><CODE>pageContext</CODE> - The PageContext for the current page. |
| <DT><B>Throws:</B> |
| <DD><CODE>javax.servlet.jsp.JspException</CODE> - -</DL> |
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