Re: [iText-questions] access to writer.os.

[Finn Bock]

[Bruno]

I have the same problem if I use your source.zip.
It's definitely a compiler problem.
I tried compiling with JDK1.3.1 and JDK1.4.
The problem persists.
I find that is a bit strange. I only get the problem when I compile
with jdk1.3.
I will look into Matt Bensons suggestions and try
to fix the problem. Otherwise we will be overwhelmed
with similar remarks and questions.
When I compile CVS with jdk1.3, the call to the generated access method 
in PdfWriter is different. When listed with javap it can't find the 
access method signature.

(from the PdfBody.add(PdfObject) method):

  39 getfield #14 <Field com.lowagie.text.pdf.PdfWriter writer>
  42 invokestatic #18 <Method null>
  45 invokevirtual #19 <Method void writeTo(java.io.OutputStream)>
When I compile with jdk1.4 the resulting code works with both jre1.3 and 
jre1.4 and the call to the access method looks more sane:

  39 getfield #14 <Field com.lowagie.text.pdf.PdfWriter writer>
  42 invokestatic #18 <Method com.lowagie.text.pdf.OutputStreamCounter 
access$001(com.lowagie.text.pdf.PdfWriter)>
  45 invokevirtual #19 <Method void writeTo(java.io.OutputStream)>

The jdk1.3 compiler I used is:
  java version "1.3.1_03"
  Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_03-b03)
  Java HotSpot(TM) Client VM (build 1.3.1_03-b03, mixed mode)
And the jdk1.4 compiler was:
  java version "1.4.0"
  Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
  Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)
The attached patch to PdfWriter allows at least Chap0101 to work for me 
when compiled and run jdk1.3.

regards,
finn
Index: PdfWriter.java
===================================================================
RCS file: /cvsroot/itext/src/com/lowagie/text/pdf/PdfWriter.java,v
retrieving revision 1.63
diff -u -r1.63 PdfWriter.java
--- PdfWriter.java      25 Mar 2003 12:36:14 -0000      1.63
+++ PdfWriter.java      26 Mar 2003 09:50:01 -0000
@@ -93,6 +93,10 @@
      * @see            PdfIndirectObject
      */
     
+    private OutputStreamCounter getOs() {
+        return os;
+    }
+
     public class PdfBody {
         
         // inner classes
@@ -211,8 +215,8 @@
         PdfIndirectObject add(PdfObject object) throws IOException {
             PdfIndirectObject indirect = new PdfIndirectObject(size(), object, 
writer);
             xrefs.add(new PdfCrossReference(position));
-            indirect.writeTo(writer.os);
-            position = writer.os.getCounter();
+            indirect.writeTo(writer.getOs());
+            position = writer.getOs().getCounter();
             return indirect;
         }
         
@@ -249,16 +253,16 @@
         PdfIndirectObject add(PdfObject object, PdfIndirectReference ref) throws 
IOException {
             PdfIndirectObject indirect = new PdfIndirectObject(ref.getNumber(), 
object, writer);
             xrefs.set(ref.getNumber(), new PdfCrossReference(position));
-            indirect.writeTo(writer.os);
-            position = writer.os.getCounter();
+            indirect.writeTo(writer.getOs());
+            position = writer.getOs().getCounter();
             return indirect;
         }
         
         PdfIndirectObject add(PdfObject object, int refNumber) throws IOException {
             PdfIndirectObject indirect = new PdfIndirectObject(refNumber, object, 
writer);
             xrefs.set(refNumber, new PdfCrossReference(position));
-            indirect.writeTo(writer.os);
-            position = writer.os.getCounter();
+            indirect.writeTo(writer.getOs());
+            position = writer.getOs().getCounter();
             return indirect;
         }
         
@@ -283,8 +287,8 @@
         PdfIndirectObject add(PdfPages object) throws IOException {
             PdfIndirectObject indirect = new PdfIndirectObject(PdfWriter.ROOT, 
object, writer);
             rootOffset = position;
-            indirect.writeTo(writer.os);
-            position = writer.os.getCounter();
+            indirect.writeTo(writer.getOs());
+            position = writer.getOs().getCounter();
             return indirect;
         }
         
@@ -1666,4 +1670,4 @@
         this.extraCatalog = extraCatalog;
     }
     
-}
\ No newline at end of file
+}