/**
 * A simple testcase used to test DTM
 *   - construct a DTM document
 *   - set DTMStringPool pointers
 *   - create element and text nodes with default append
 *   - dump the content of the DTM document created
 *
 * Rewritten to create the document via a simulated SAX2 stream rather than
 * using "internal" DTM interfaces.
 *
 *<P>Status - work in progress</p>
 */
import org.apache.xml.dtm.ref.CustomStringPool;
import org.apache.xml.dtm.DTM;
import org.apache.xml.dtm.ref.DTMDocumentImpl;
import org.apache.xml.dtm.ref.DTMStringPool;
import org.apache.xml.dtm.ref.*;

public class ComposeDTM {
        DTMDocumentImpl newDoc;

        // %REVIEW% Justify why CustomStringPool rather than DTMStringPool.
        // (See %REVIEW% issue in CustomStringPool's comments.)
        DTMStringPool symbolTable = new CustomStringPool();

        public ComposeDTM() {};

        public static void main(String[] argv) {
                //try {
                ComposeDTM cdtm = new ComposeDTM();
                cdtm.constructDoc();

                cdtm.newDoc.setNsNameTable(cdtm.symbolTable);
                cdtm.newDoc.setLocalNameTable(cdtm.symbolTable);
                cdtm.newDoc.setPrefixNameTable(cdtm.symbolTable);
                cdtm.composeDoc();

                cdtm.treeDump();
                /*} catch (Exception e) {
                         System.out.println("DOMCompose::Exception: " + e);
                }*/
        }

        public void printNode(int nodeHandle, java.io.PrintWriter pw)
        {
                pw.print("Node " + nodeHandle +" ) ");
                int type = newDoc.getNodeType(nodeHandle);
                pw.print("[type: "+ type +" (");

                switch (type) {
                case DTM.ATTRIBUTE_NODE: pw.print("ATTRIBUTE_NODE"); break;
                case DTM.CDATA_SECTION_NODE: pw.print("CDATA_SECTION_NODE"); break;
                case DTM.COMMENT_NODE: pw.print("COMMENT_NODE"); break;
                case DTM.DOCUMENT_FRAGMENT_NODE: pw.print("DOCUMENT_FRAGMENT_NODE"); break;
                case DTM.DOCUMENT_NODE: pw.print("DOCUMENT_NODE"); break;
                case DTM.DOCUMENT_TYPE_NODE: pw.print("DOCUMENT_TYPE_NODE"); break;
                case DTM.ELEMENT_NODE: pw.print("ELEMENT_NODE"); break;
                case DTM.ENTITY_NODE: pw.print("ENTITY_NODE"); break;
                case DTM.ENTITY_REFERENCE_NODE: pw.print("ENTITY_REFERENCE_NODE"); break;
                case DTM.NOTATION_NODE: pw.print("NOTATION_NODE"); break;
                case DTM.PROCESSING_INSTRUCTION_NODE: pw.print("PROCESSING_INSTRUCTION_NODE"); break;
                case DTM.TEXT_NODE: pw.print("TEXT_NODE"); break;
                default: pw.print("???");
                }
                pw.print(")]");
                pw.print("[node name: " + newDoc.getNodeName(nodeHandle)+"]");
                pw.print("[node value: " + newDoc.getNodeValue(nodeHandle)+"]");
                pw.println("");
        }

        // instantiate a DTM document
        public void constructDoc() {

                newDoc = new DTMDocumentImpl(null, 0, null, null);

        }

        // compose a PurchaseOrder document
        public void composeDoc() {
                int root, h, c1, c2, c3, c4, c1_text, c2_text, c3_text, c4_text;
                String text;
                
                try 
                  {
                    
                    newDoc.startDocument();

                    newDoc.startElement(null,"PurchaseOrderList","PurchaseOrderList", null);
                    // root.createAttribute("version", "1.1"));

                    for (int i = 0; i < 10; i++) {

                      newDoc.startElement(null,"PurchaseOrder","PurchaseOrder", null);

                      newDoc.startElement(null,"Item","Item", null);
                      // c1.createAttribute();
                      text="Basketball" + " - " + i;
                      newDoc.characters(text.toCharArray(),0,text.length());
                      newDoc.endElement(null, "Item", "Item");

                      newDoc.startElement(null,"Description","Description", null);
                      // c2.createAttribute();
                      text="Professional Leather Michael Jordan Signatured Basketball";
                      newDoc.characters(text.toCharArray(),0,text.length());
                      newDoc.endElement(null, "Description", "Description");

                      newDoc.startElement(null,"UnitPrice","UnitPrice", null);
                      text="$12.99";
                      newDoc.characters(text.toCharArray(),0,text.length());
                      newDoc.endElement(null, "UnitPrice", "UnitPrice");

                      newDoc.startElement(null,"Quantity","Quantity", null);
                      text="50";
                      newDoc.characters(text.toCharArray(),0,text.length());
                      newDoc.endElement(null, "Quantity", "Quantity");

                      newDoc.endElement(null, "PurchaseOrder", "PurchaseOrder");
                    }

                    newDoc.endElement(null, "PurchaseOrderList", "PurchaseOrderList");

                    newDoc.endDocument();
                  }
                catch(org.xml.sax.SAXException e)
                  {
                    e.printStackTrace();
                  }
        }

        // traverse the PurchaseOrder document and print out the content
        public void treeDump()
        {
                int root, node, node_child, node_sibling, node_name, node_value, node_type;
 
                java.io.PrintWriter pwrt = null;
                try {
                        java.io.FileOutputStream os = new java.io.FileOutputStream("dtmTreeDump.txt");
                        pwrt = new java.io.PrintWriter(os);

                        root = newDoc.getDocumentRoot();
                        System.out.println("Print out the document root element");
                        printNode(root, pwrt);

                        // root has children
                        if (newDoc.hasChildNodes(root)) {
                                // traverse through all children of the root
                                System.out.println("Print out first generation children");
                                node = newDoc.getFirstChild(root);
                                node_sibling = node;
                                int i= 1;
                                while (node_sibling != -1) {
                                        System.out.println("Child " + i + " is:");
                                        printNode(node_sibling, pwrt);
                                        node_sibling = newDoc.getNextSibling(node_sibling);
                                        i++;
                                }
                                // traverse through all descendant of the root, do this later after more generations
                                // of children are added to the root
                        }
                } catch (java.io.IOException ioe) {
                        System.out.println("Could not dump DTM");
                } finally {
                        pwrt.close();
                }
        }

}