Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"
2019-10-31 20:43:47 -05:00
parent db85c8f275
commit 3225470df5
20543 changed files with 1642750 additions and 0 deletions
@@ -0,0 +1,99 @@
+package com.baeldung.xmlhtml.stax;
+
+import javax.xml.stream.*;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.util.HashMap;
+import java.util.Map;
+
+public class StaxTransformer {
+
+    private Map<String, String> map;
+
+    public StaxTransformer(String resourcePath) throws IOException, XMLStreamException {
+        XMLInputFactory factory = XMLInputFactory.newInstance();
+        factory.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES, Boolean.FALSE);
+        factory.setProperty(XMLInputFactory.SUPPORT_DTD, Boolean.FALSE);
+        XMLStreamReader input = null;
+        try (FileInputStream file = new FileInputStream(resourcePath)) {
+            input = factory.createXMLStreamReader(file);
+            map = buildMap(input);
+        } finally {
+            if (input != null) {
+                input.close();
+            }
+        }
+    }
+
+    public String html() throws XMLStreamException, IOException {
+        try (Writer output = new StringWriter()) {
+            XMLStreamWriter writer = XMLOutputFactory
+              .newInstance()
+              .createXMLStreamWriter(output);
+            //Head
+            writer.writeDTD("<!DOCTYPE html>");
+            writer.writeCharacters(String.format("%n"));
+            writer.writeStartElement("html");
+            writer.writeAttribute("lang", "en");
+            writer.writeCharacters(String.format("%n"));
+            writer.writeStartElement("head");
+            writer.writeCharacters(String.format("%n"));
+            writer.writeDTD("<META http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">");
+            writer.writeCharacters(String.format("%n"));
+            writer.writeStartElement("title");
+            writer.writeCharacters(map.get("heading"));
+            writer.writeEndElement();
+            writer.writeCharacters(String.format("%n"));
+            writer.writeEndElement();
+            writer.writeCharacters(String.format("%n"));
+            //Body
+            writer.writeStartElement("body");
+            writer.writeCharacters(String.format("%n"));
+            writer.writeStartElement("p");
+            writer.writeCharacters(map.get("from"));
+            writer.writeEndElement();
+            writer.writeCharacters(String.format("%n"));
+            writer.writeStartElement("p");
+            writer.writeCharacters(map.get("content"));
+            writer.writeEndElement();
+            writer.writeCharacters(String.format("%n"));
+            writer.writeEndElement();
+            writer.writeCharacters(String.format("%n"));
+            writer.writeEndDocument();
+            writer.writeCharacters(String.format("%n"));
+            writer.flush();
+            return output.toString();
+        }
+    }
+
+    private Map<String, String> buildMap(XMLStreamReader input) throws XMLStreamException {
+        Map<String, String> tempMap = new HashMap<>();
+        while (input.hasNext()) {
+            input.next();
+            if (input.isStartElement()) {
+                if (input
+                  .getLocalName()
+                  .equals("heading")) {
+                    tempMap.put("heading", input.getElementText());
+                }
+                if (input
+                  .getLocalName()
+                  .equals("from")) {
+                    tempMap.put("from", String.format("from: %s", input.getElementText()));
+                }
+                if (input
+                  .getLocalName()
+                  .equals("content")) {
+                    tempMap.put("content", input.getElementText());
+                }
+            }
+        }
+        return tempMap;
+    }
+
+    public Map<String, String> getMap() {
+        return map;
+    }
+}