ognl.html

ONGL学习的好书,介绍ONGL的相关知识

<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the OGNL expression to be parsed<DD><CODE>root</CODE> - the root object for the OGNL expression
<DT><B>Returns:</B><DD>the result of evaluating the expression
<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/ExpressionSyntaxException.html" title="class in ognl">ExpressionSyntaxException</A></CODE> - if the expression is malformed
<DD><CODE><A HREF="../ognl/MethodFailedException.html" title="class in ognl">MethodFailedException</A></CODE> - if the expression called a method which failed
<DD><CODE><A HREF="../ognl/NoSuchPropertyException.html" title="class in ognl">NoSuchPropertyException</A></CODE> - if the expression referred to a nonexistent property
<DD><CODE><A HREF="../ognl/InappropriateExpressionException.html" title="class in ognl">InappropriateExpressionException</A></CODE> - if the expression can't be used in this context
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE> - if there is a pathological environmental problem<DT><B>See Also:</B><DD><A HREF="../ognl/Ognl.html#parseExpression(java.lang.String)"><CODE>parseExpression(String)</CODE></A>, 
<A HREF="../ognl/Ognl.html#getValue(java.lang.Object, java.lang.Object)"><CODE>getValue(Object,Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getValue(java.lang.String, java.lang.Object, java.lang.Class)"><!-- --></A><H3>
getValue</H3>
<PRE>
public static java.lang.Object <B>getValue</B>(java.lang.String&nbsp;expression,
                                        java.lang.Object&nbsp;root,
                                        java.lang.Class&nbsp;resultType)
                                 throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD>Convenience method that combines calls to <code> parseExpression </code> and
 <code> getValue</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the OGNL expression to be parsed<DD><CODE>root</CODE> - the root object for the OGNL expression<DD><CODE>resultType</CODE> - the converted type of the resultant object, using the context's type converter
<DT><B>Returns:</B><DD>the result of evaluating the expression
<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/ExpressionSyntaxException.html" title="class in ognl">ExpressionSyntaxException</A></CODE> - if the expression is malformed
<DD><CODE><A HREF="../ognl/MethodFailedException.html" title="class in ognl">MethodFailedException</A></CODE> - if the expression called a method which failed
<DD><CODE><A HREF="../ognl/NoSuchPropertyException.html" title="class in ognl">NoSuchPropertyException</A></CODE> - if the expression referred to a nonexistent property
<DD><CODE><A HREF="../ognl/InappropriateExpressionException.html" title="class in ognl">InappropriateExpressionException</A></CODE> - if the expression can't be used in this context
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE> - if there is a pathological environmental problem<DT><B>See Also:</B><DD><A HREF="../ognl/Ognl.html#parseExpression(java.lang.String)"><CODE>parseExpression(String)</CODE></A>, 
<A HREF="../ognl/Ognl.html#getValue(java.lang.Object, java.lang.Object)"><CODE>getValue(Object,Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setValue(java.lang.Object, java.util.Map, java.lang.Object, java.lang.Object)"><!-- --></A><H3>
setValue</H3>
<PRE>
public static void <B>setValue</B>(java.lang.Object&nbsp;tree,
                            java.util.Map&nbsp;context,
                            java.lang.Object&nbsp;root,
                            java.lang.Object&nbsp;value)
                     throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD>Evaluates the given OGNL expression tree to insert a value into the object graph
 rooted at the given root object.  The default context is set for the given
 context and root via <CODE>addDefaultContext()</CODE>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>tree</CODE> - the OGNL expression tree to evaluate, as returned by parseExpression()<DD><CODE>context</CODE> - the naming context for the evaluation<DD><CODE>root</CODE> - the root object for the OGNL expression<DD><CODE>value</CODE> - the value to insert into the object graph
<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/MethodFailedException.html" title="class in ognl">MethodFailedException</A></CODE> - if the expression called a method which failed
<DD><CODE><A HREF="../ognl/NoSuchPropertyException.html" title="class in ognl">NoSuchPropertyException</A></CODE> - if the expression referred to a nonexistent property
<DD><CODE><A HREF="../ognl/InappropriateExpressionException.html" title="class in ognl">InappropriateExpressionException</A></CODE> - if the expression can't be used in this context
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE> - if there is a pathological environmental problem</DL>
</DD>
</DL>
<HR>

<A NAME="setValue(java.lang.String, java.util.Map, java.lang.Object, java.lang.Object)"><!-- --></A><H3>
setValue</H3>
<PRE>
public static void <B>setValue</B>(java.lang.String&nbsp;expression,
                            java.util.Map&nbsp;context,
                            java.lang.Object&nbsp;root,
                            java.lang.Object&nbsp;value)
                     throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD>Evaluates the given OGNL expression to insert a value into the object graph
 rooted at the given root object given the context.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the OGNL expression to be parsed<DD><CODE>root</CODE> - the root object for the OGNL expression<DD><CODE>context</CODE> - the naming context for the evaluation<DD><CODE>value</CODE> - the value to insert into the object graph
<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/MethodFailedException.html" title="class in ognl">MethodFailedException</A></CODE> - if the expression called a method which failed
<DD><CODE><A HREF="../ognl/NoSuchPropertyException.html" title="class in ognl">NoSuchPropertyException</A></CODE> - if the expression referred to a nonexistent property
<DD><CODE><A HREF="../ognl/InappropriateExpressionException.html" title="class in ognl">InappropriateExpressionException</A></CODE> - if the expression can't be used in this context
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE> - if there is a pathological environmental problem</DL>
</DD>
</DL>
<HR>

<A NAME="setValue(java.lang.Object, java.lang.Object, java.lang.Object)"><!-- --></A><H3>
setValue</H3>
<PRE>
public static void <B>setValue</B>(java.lang.Object&nbsp;tree,
                            java.lang.Object&nbsp;root,
                            java.lang.Object&nbsp;value)
                     throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD>Evaluates the given OGNL expression tree to insert a value into the object graph
 rooted at the given root object.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>tree</CODE> - the OGNL expression tree to evaluate, as returned by parseExpression()<DD><CODE>root</CODE> - the root object for the OGNL expression<DD><CODE>value</CODE> - the value to insert into the object graph
<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/MethodFailedException.html" title="class in ognl">MethodFailedException</A></CODE> - if the expression called a method which failed
<DD><CODE><A HREF="../ognl/NoSuchPropertyException.html" title="class in ognl">NoSuchPropertyException</A></CODE> - if the expression referred to a nonexistent property
<DD><CODE><A HREF="../ognl/InappropriateExpressionException.html" title="class in ognl">InappropriateExpressionException</A></CODE> - if the expression can't be used in this context
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE> - if there is a pathological environmental problem</DL>
</DD>
</DL>
<HR>

<A NAME="setValue(java.lang.String, java.lang.Object, java.lang.Object)"><!-- --></A><H3>
setValue</H3>
<PRE>
public static void <B>setValue</B>(java.lang.String&nbsp;expression,
                            java.lang.Object&nbsp;root,
                            java.lang.Object&nbsp;value)
                     throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD>Convenience method that combines calls to <code> parseExpression </code> and
 <code> setValue</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the OGNL expression to be parsed<DD><CODE>root</CODE> - the root object for the OGNL expression<DD><CODE>value</CODE> - the value to insert into the object graph
<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/ExpressionSyntaxException.html" title="class in ognl">ExpressionSyntaxException</A></CODE> - if the expression is malformed
<DD><CODE><A HREF="../ognl/MethodFailedException.html" title="class in ognl">MethodFailedException</A></CODE> - if the expression called a method which failed
<DD><CODE><A HREF="../ognl/NoSuchPropertyException.html" title="class in ognl">NoSuchPropertyException</A></CODE> - if the expression referred to a nonexistent property
<DD><CODE><A HREF="../ognl/InappropriateExpressionException.html" title="class in ognl">InappropriateExpressionException</A></CODE> - if the expression can't be used in this context
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE> - if there is a pathological environmental problem<DT><B>See Also:</B><DD><A HREF="../ognl/Ognl.html#parseExpression(java.lang.String)"><CODE>parseExpression(String)</CODE></A>, 
<A HREF="../ognl/Ognl.html#setValue(java.lang.Object, java.lang.Object, java.lang.Object)"><CODE>setValue(Object,Object,Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="isConstant(java.lang.Object, java.util.Map)"><!-- --></A><H3>
isConstant</H3>
<PRE>
public static boolean <B>isConstant</B>(java.lang.Object&nbsp;tree,
                                 java.util.Map&nbsp;context)
                          throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isConstant(java.lang.String, java.util.Map)"><!-- --></A><H3>
isConstant</H3>
<PRE>
public static boolean <B>isConstant</B>(java.lang.String&nbsp;expression,
                                 java.util.Map&nbsp;context)
                          throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isConstant(java.lang.Object)"><!-- --></A><H3>
isConstant</H3>
<PRE>
public static boolean <B>isConstant</B>(java.lang.Object&nbsp;tree)
                          throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isConstant(java.lang.String)"><!-- --></A><H3>
isConstant</H3>
<PRE>
public static boolean <B>isConstant</B>(java.lang.String&nbsp;expression)
                          throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isSimpleProperty(java.lang.Object, java.util.Map)"><!-- --></A><H3>
isSimpleProperty</H3>
<PRE>
public static boolean <B>isSimpleProperty</B>(java.lang.Object&nbsp;tree,
                                       java.util.Map&nbsp;context)
                                throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isSimpleProperty(java.lang.String, java.util.Map)"><!-- --></A><H3>
isSimpleProperty</H3>
<PRE>
public static boolean <B>isSimpleProperty</B>(java.lang.String&nbsp;expression,
                                       java.util.Map&nbsp;context)
                                throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isSimpleProperty(java.lang.Object)"><!-- --></A><H3>
isSimpleProperty</H3>
<PRE>
public static boolean <B>isSimpleProperty</B>(java.lang.Object&nbsp;tree)
                                throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isSimpleProperty(java.lang.String)"><!-- --></A><H3>
isSimpleProperty</H3>
<PRE>
public static boolean <B>isSimpleProperty</B>(java.lang.String&nbsp;expression)
                                throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isSimpleNavigationChain(java.lang.Object, java.util.Map)"><!-- --></A><H3>
isSimpleNavigationChain</H3>
<PRE>
public static boolean <B>isSimpleNavigationChain</B>(java.lang.Object&nbsp;tree,
                                              java.util.Map&nbsp;context)
                                       throws <A HREF="../ognl/OgnlException.html" title="class in ognl">OgnlException</A></PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A