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<P><FONT SIZE=2 FACE="Arial">Hi,</FONT>
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<P><FONT SIZE=2 FACE="Arial">I am hoping that someone is going to be able to help me out here.</FONT>
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<P><FONT SIZE=2 FACE="Arial">I am using the Java version of mapscript, along with Tomcat to produce dynamic mapping for an application. Whilst coloring all features on a layer with the same color all is ok. Once I try to classify the features, the first client displays ok, but when another client invokes a session I get this error message</FONT></P>
<P><FONT SIZE=2 FACE="Arial">java.lang.UnknownError: loadSymbolSet(): Unknown identifier. Parsing error near (SYMBOL):(line 0)</FONT>
<BR> <FONT SIZE=2 FACE="Arial">at edu.umn.gis.mapscript.mapscriptJNI.mapObj_setSymbolSet(Native Method)</FONT>
<BR> <FONT SIZE=2 FACE="Arial">at edu.umn.gis.mapscript.mapObj.setSymbolSet(mapObj.java:461)</FONT>
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<P><FONT SIZE=2 FACE="Arial">I have replicated this using a simple loop to draw my map as below</FONT>
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<P><FONT SIZE=2 FACE="Arial">public void doMap(){</FONT>
<BR><FONT SIZE=2 FACE="Arial">int j;</FONT>
<BR><FONT SIZE=2 FACE="Arial">for (j=0;j<10;j++){</FONT>
<BR><FONT SIZE=2 FACE="Arial"> drawMap(j);</FONT>
<BR><FONT SIZE=2 FACE="Arial">}</FONT>
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<P><FONT SIZE=2 FACE="Arial">public void drawMap(int index){</FONT>
<BR><FONT SIZE=2 FACE="Arial">String filename = "mapImg"+Integer.toString(index)+".jpg";</FONT>
<BR><FONT SIZE=2 FACE="Arial">mapObj icemap = new mapObj("");</FONT>
<BR><FONT SIZE=2 FACE="Arial">rectObj mainExtent = new rectObj(-77.1,38.85,-76.9,38.95,mapscriptConstants.MS_FALSE); </FONT>
<BR><FONT SIZE=2 FACE="Arial">icemap.setExtent(mainExtent);</FONT>
<BR><FONT SIZE=2 FACE="Arial">setPaths(icemap,index);</FONT>
<BR><FONT SIZE=2 FACE="Arial">icemap.setHeight(800);</FONT>
<BR><FONT SIZE=2 FACE="Arial">icemap.setWidth(800);</FONT>
<BR><FONT SIZE=2 FACE="Arial">doImageColor(icemap);</FONT>
<BR><FONT SIZE=2 FACE="Arial">webObj thisWeb = icemap.getWeb();</FONT>
<BR><FONT SIZE=2 FACE="Arial">thisWeb.setImagepath("/var/maps/tmp/");</FONT>
<BR><FONT SIZE=2 FACE="Arial">addLayerInfo(icemap,"Urban Area","ap",mapscriptConstants.MS_LAYER_POLYGON,mapscriptConstants.MS_ON,0,10000000,15657698,"NAME","georgia-bold",6,100000,50000000,0,0.0,0); </FONT></P>
<P><FONT SIZE=2 FACE="Arial">addthermalMap2(icemap);</FONT>
<BR><FONT SIZE=2 FACE="Arial">imageObj mapImg = icemap.draw();</FONT>
<BR><FONT SIZE=2 FACE="Arial">mapImg.save("/var/maps/tmp/"+filename,icemap);</FONT>
<BR><FONT SIZE=2 FACE="Arial">icemap.delete();</FONT>
<BR><FONT SIZE=2 FACE="Arial">}</FONT>
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<P><FONT SIZE=2 FACE="Arial">In addLayerInfo I create a layer etc etc and define a class with an empty expression (ie all features)</FONT>
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<P><FONT SIZE=2 FACE="Arial">classObj oMapClass = new classObj(aLayer);</FONT>
<BR><FONT SIZE=2 FACE="Arial">oMapClass.setExpression("");</FONT>
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<P><FONT SIZE=2 FACE="Arial">In addthermalMap2 I create an expression for an attrubute field frst as such</FONT>
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<P><FONT SIZE=2 FACE="Arial">oMapClass.setExpression("([frst]>=3.0)");</FONT>
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<P><FONT SIZE=2 FACE="Arial">The function setPath , sets the path to shapefiles, symbol & font files. </FONT>
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<P><FONT SIZE=2 FACE="Arial"> public void setPaths(mapObj icemap, int index){</FONT>
<BR><FONT SIZE=2 FACE="Arial"> icemap.setShapepath("/var/maps/shapefiles/");</FONT>
<BR><FONT SIZE=2 FACE="Arial"> System.out.println("Set Shape path");</FONT>
<BR><FONT SIZE=2 FACE="Arial"> icemap.setSymbolSet(symSet); // THIS IS THE LINE THAT CAUSES IT TO STOP</FONT>
<BR><FONT SIZE=2 FACE="Arial"> System.out.println("Set Symbol");</FONT>
<BR><FONT SIZE=2 FACE="Arial"> icemap.setFontSet("/var/maps/symbols/fonts.txt");</FONT>
<BR><FONT SIZE=2 FACE="Arial"> System.out.println("Set Font");</FONT>
<BR><FONT SIZE=2 FACE="Arial"> }</FONT>
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<P><FONT SIZE=2 FACE="Arial">The second time around the loop setPath generates the error message. If i comment out the addthermalMap, it runs ok ? I have seen something similar posted for php/mapscript. Is there any way round this ? Have I missed the point and done something wrong ? Is it a known bug ? If so is it planned to fix it ? This is real urgent as I have a deadline of end of this month to have the first system out for test.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Thanks Stephen</FONT>
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