Dot operators...

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Konstantin:

Thanks for your email to my colleage Prem. But it appears that We are still experiecing the problem. We are trying to dynamically evaluate java expression like:

"someobject.isTrue()==true" where someObject is created and registered thru Dynamic lib registration.

Similarly we get the following compilitaiion error for String object:

COMPILATION ERROR :The name "String" is unknown.

String.toString()

Here is the entire code....Please help,...

package test;

import gnu.jel.*;

import gov.irs.efile.tfrp.dataModel.PTFResult;

 

public class JelTest {

public static void main(String[] args) {





// Set up the library

Class[] staticLib=new Class[1];

try {

staticLib[0]=Class.forName("java.lang.String");

} catch(ClassNotFoundException e) {

// Can't be ;)) ...... in java ... ;)

};





Class[] dynamicLib=new Class[1];

/*

PTFResult ptfResult = new PTFResult(0, true);

Object[] context = new Object[1];

context[0]=ptfResult;

dynamicLib[0]=ptfResult.getClass();

*/

String ptfResult = new String();

Object[] context = new Object[1];

context[0]=ptfResult;

dynamicLib[0]=ptfResult.getClass();







Library lib=new Library(null,dynamicLib,new Class[0],null,null);

try {

lib.markStateDependent("random",null);

} catch (Exception e) {

// Can't be also

};



String testStr = "abc"; 

//DVMap resolver = new DVMap();

//PTFResult ptfResult = new PTFResult(0, true); 

//



//String expr = "\"abc\".length()==3";



String expr = "testStr.toString()";///"ptfResult.getIsValid()==true"; 

//String expr = "PTFResult.getIsValid()==true";

CompiledExpression expr_c=null;

try {

expr_c=Evaluator.compile(expr,lib);

} catch (CompilationException ce) {

System.err.print("COMPILATION ERROR :");

System.err.println(ce.getMessage());

System.err.print(" ");

System.err.println(expr);

int column=ce.getColumn(); // Column, where error was found

for(int i=0;i<column+23-1;i++) System.err.print(' ');

System.err.println('^');

}



if (expr_c != null) {



// Evaluate (Can do it now any number of times FAST !!!)

Boolean result=null;

try {

result=(Boolean)expr_c.evaluate(null);

} catch (Throwable e) {

System.err.println("Exception emerged from JEL compiled"+

" code (IT'S OK) :");

System.err.print(e);

}

System.err.println("result = " + result);



}

}

}

 



---------------------------------
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--0-386232458-1029443056=:96213
Content-Type: text/html; charset=us-ascii

<FONT face="Courier New" color=#000000 size=2>
<P>Konstantin:</P>
<P>Thanks for your email to my colleage Prem. But it appears that We are still experiecing the problem. We are trying to dynamically evaluate java expression like:</P>
<P>"someobject.isTrue()==true" where someObject is created and registered thru Dynamic lib registration.</P>
<P>Similarly we get the following compilitaiion error for String object:</P><FONT color=#ff0000 size=2>
<P>COMPILATION ERROR :The name "String" is unknown.</P>
<P>String.toString()</P></FONT>
<P>Here is the entire code....Please help,...</P><FONT color=#7f0055 size=2>
<P>package </FONT><FONT color=#000000 size=2>test;</P></FONT><FONT color=#7f0055 size=2>
<P>import </FONT><FONT color=#000000 size=2>gnu.jel.*;</P></FONT><FONT color=#7f0055 size=2>
<P>import </FONT><FONT color=#000000 size=2>gov.irs.efile.tfrp.dataModel.PTFResult;</P></FONT><FONT size=2>
<P>&nbsp;</P></FONT><FONT color=#7f0055 size=2>
<P>public class </FONT><FONT color=#000000 size=2>JelTest {</P></FONT><FONT size=2></FONT><FONT color=#000000 size=2>
<P></FONT><FONT color=#7f0055 size=2>public static void </FONT><FONT color=#000000 size=2>main(String[] args) {</P>
<P></P>
<P></P>
<P></FONT><FONT color=#3f7f5f size=2>// Set up the library</P>
<P></FONT><FONT color=#000000 size=2>Class[] staticLib=</FONT><FONT color=#7f0055 size=2>new </FONT><FONT color=#000000 size=2>Class[1];</P>
<P></FONT><FONT color=#7f0055 size=2>try </FONT><FONT color=#000000 size=2>{</P>
<P>staticLib[0]=Class.forName(</FONT><FONT color=#2a00ff size=2>"java.lang.String"</FONT><FONT color=#000000 size=2>);</P>
<P>} </FONT><FONT color=#7f0055 size=2>catch</FONT><FONT color=#000000 size=2>(ClassNotFoundException e) {</P>
<P></FONT><FONT color=#3f7f5f size=2>// Can't be ;)) ...... in java ... ;)</P></FONT><FONT color=#000000 size=2>
<P>};</P>
<P></P>
<P></P>
<P>Class[] dynamicLib=</FONT><FONT color=#7f0055 size=2>new </FONT><FONT color=#000000 size=2>Class[1];</P>
<P></FONT><FONT color=#3f7f5f size=2>/*</P>
<P>PTFResult ptfResult = new PTFResult(0, true);</P>
<P>Object[] context = new Object[1];</P>
<P>context[0]=ptfResult;</P>
<P>dynamicLib[0]=ptfResult.getClass();</P>
<P>*/</P></FONT><FONT color=#000000 size=2>
<P>String ptfResult = </FONT><FONT color=#7f0055 size=2>new </FONT><FONT color=#000000 size=2>String();</P>
<P>Object[] context = </FONT><FONT color=#7f0055 size=2>new </FONT><FONT color=#000000 size=2>Object[1];</P>
<P>context[0]=ptfResult;</P>
<P>dynamicLib[0]=ptfResult.getClass();</P></FONT><FONT size=2></FONT><FONT color=#000000 size=2>
<P></P>
<P></P>
<P></P>
<P>Library lib=</FONT><FONT color=#7f0055 size=2>new </FONT><FONT color=#000000 size=2>Library(</FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>,dynamicLib,</FONT><FONT color=#7f0055 size=2>new </FONT><FONT color=#000000 size=2>Class[0],</FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>,</FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>);</P>
<P></FONT><FONT color=#7f0055 size=2>try </FONT><FONT color=#000000 size=2>{</P>
<P>lib.markStateDependent(</FONT><FONT color=#2a00ff size=2>"random"</FONT><FONT color=#000000 size=2>,</FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>);</P>
<P>} </FONT><FONT color=#7f0055 size=2>catch </FONT><FONT color=#000000 size=2>(Exception e) {</P>
<P></FONT><FONT color=#3f7f5f size=2>// Can't be also</P>
<P></FONT><FONT color=#000000 size=2>};</P>
<P></P>
<P>String testStr = </FONT><FONT color=#2a00ff size=2>"abc"</FONT><FONT color=#000000 size=2>; </P>
<P></FONT><FONT color=#3f7f5f size=2>//DVMap resolver = new DVMap();</P>
<P>//PTFResult ptfResult = new PTFResult(0, true); </P>
<P>//</P>
<P></P>
<P>//String expr = "\"abc\".length()==3";</P>
<P></P></FONT><FONT color=#000000 size=2>
<P>String expr = </FONT><FONT color=#2a00ff size=2>"testStr.toString()"</FONT><FONT color=#000000 size=2>;</FONT><FONT color=#3f7f5f size=2>///"ptfResult.getIsValid()==true"; </P>
<P>//String expr = "PTFResult.getIsValid()==true";</P>
<P></FONT><FONT color=#000000 size=2>CompiledExpression expr_c=</FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>;</P>
<P></FONT><FONT color=#7f0055 size=2>try </FONT><FONT color=#000000 size=2>{</P>
<P>expr_c=Evaluator.compile(expr,lib);</P>
<P>} </FONT><FONT color=#7f0055 size=2>catch </FONT><FONT color=#000000 size=2>(CompilationException ce) {</P>
<P>System.err.print(</FONT><FONT color=#2a00ff size=2>"COMPILATION ERROR :"</FONT><FONT color=#000000 size=2>);</P>
<P>System.err.println(ce.getMessage());</P>
<P>System.err.print(</FONT><FONT color=#2a00ff size=2>" "</FONT><FONT color=#000000 size=2>);</P>
<P>System.err.println(expr);</P>
<P></FONT><FONT color=#7f0055 size=2>int </FONT><FONT color=#000000 size=2>column=ce.getColumn(); </FONT><FONT color=#3f7f5f size=2>// Column, where error was found</P>
<P></FONT><FONT color=#7f0055 size=2>for</FONT><FONT color=#000000 size=2>(</FONT><FONT color=#7f0055 size=2>int </FONT><FONT color=#000000 size=2>i=0;i&lt;column+23-1;i++) System.err.print(</FONT><FONT color=#2a00ff size=2>' '</FONT><FONT color=#000000 size=2>);</P>
<P>System.err.println(</FONT><FONT color=#2a00ff size=2>'^'</FONT><FONT color=#000000 size=2>);</P>
<P>}</P>
<P></P>
<P></FONT><FONT color=#7f0055 size=2>if </FONT><FONT color=#000000 size=2>(expr_c != </FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>) {</P>
<P></P>
<P></FONT><FONT color=#3f7f5f size=2>// Evaluate (Can do it now any number of times FAST !!!)</P>
<P></FONT><FONT color=#000000 size=2>Boolean result=</FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>;</P>
<P></FONT><FONT color=#7f0055 size=2>try </FONT><FONT color=#000000 size=2>{</P>
<P>result=(Boolean)expr_c.evaluate(</FONT><FONT color=#7f0055 size=2>null</FONT><FONT color=#000000 size=2>);</P>
<P>} </FONT><FONT color=#7f0055 size=2>catch </FONT><FONT color=#000000 size=2>(Throwable e) {</P>
<P>System.err.println(</FONT><FONT color=#2a00ff size=2>"Exception emerged from JEL compiled"</FONT><FONT color=#000000 size=2>+</P>
<P></FONT><FONT color=#2a00ff size=2>" code (IT'S OK) :"</FONT><FONT color=#000000 size=2>);</P>
<P>System.err.print(e);</P>
<P>}</P>
<P>System.err.println(</FONT><FONT color=#2a00ff size=2>"result = " </FONT><FONT color=#000000 size=2>+ result);</P>
<P></P>
<P>}</P>
<P>}</P></FONT><FONT size=2></FONT><FONT color=#000000 size=2>
<P>}</P></FONT>
<P>&nbsp;</P></FONT><p><br><hr size=1><b>Do You Yahoo!?</b><br>
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