From f80fbd0037311523175bcf5afbf33801657939ad Mon Sep 17 00:00:00 2001
From: Martin Goik <goik@hdm-stuttgart.de>
Date: Sun, 19 May 2013 11:36:01 +0200
Subject: [PATCH] mixed content sax example
---
.../Jdbc/src/main/java/sax/mixed/Driver.java | 17 +++++++
.../src/main/java/sax/mixed/MixedCount.java | 39 ++++++++++++++++
.../java/sax/mixed/MixedCountHandler.java | 45 +++++++++++++++++++
.../main/java/sax/mixed/MyErrorHandler.java | 25 +++++++++++
.../Jdbc/src/main/java/sax/mixed/mixed.xml | 7 +++
5 files changed, 133 insertions(+)
create mode 100644 ws/eclipse/Jdbc/src/main/java/sax/mixed/Driver.java
create mode 100644 ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCount.java
create mode 100644 ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCountHandler.java
create mode 100644 ws/eclipse/Jdbc/src/main/java/sax/mixed/MyErrorHandler.java
create mode 100644 ws/eclipse/Jdbc/src/main/java/sax/mixed/mixed.xml
diff --git a/ws/eclipse/Jdbc/src/main/java/sax/mixed/Driver.java b/ws/eclipse/Jdbc/src/main/java/sax/mixed/Driver.java
new file mode 100644
index 000000000..9e591b859
--- /dev/null
+++ b/ws/eclipse/Jdbc/src/main/java/sax/mixed/Driver.java
@@ -0,0 +1,17 @@
+package sax.mixed;
+
+/** Driver */
+public class Driver {
+ /** @param argv unused */
+ public static void main(String argv[]) {
+ try{
+ MixedCount xmlStats = new MixedCount();
+ xmlStats.parse("src/main/java/sax/mixed/mixed.xml");
+
+ System.out.println("Document contains "
+ + xmlStats.getElementCount() + " text nodes within mixed content elements");
+ } catch (Exception e){
+ e.printStackTrace(System.err);
+ }
+ }
+}
\ No newline at end of file
diff --git a/ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCount.java b/ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCount.java
new file mode 100644
index 000000000..07506b583
--- /dev/null
+++ b/ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCount.java
@@ -0,0 +1,39 @@
+package sax.mixed;
+
+import java.io.IOException;
+
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
+import org.xml.sax.SAXException;
+import org.xml.sax.XMLReader;
+
+/** Parser, content- and errorhandler assembly */
+public class MixedCount {
+ /** @throws SAXException
+ * @throws ParserConfigurationException */
+ public MixedCount()
+ throws SAXException, ParserConfigurationException{
+ final SAXParserFactory saxPf = SAXParserFactory.newInstance();
+ final SAXParser saxParser = saxPf.newSAXParser();
+ xmlReader = saxParser.getXMLReader();
+ xmlReader.setContentHandler(eventHandler);
+ xmlReader.setErrorHandler(errorHandler);
+ }
+ /** @see sax.stat.v1.ElementCount
+ * @param uri
+ * @throws IOException
+ * @throws SAXException */
+ public void parse(final String uri)
+ throws IOException, SAXException{
+ xmlReader.parse(uri);
+ }
+ /** @return @see sax.stat.v1.ElementCount#getElementCount() */
+ public int getElementCount() {
+ return eventHandler.getMixedElementCount();
+ }
+ private final XMLReader xmlReader;
+ private final MixedCountHandler eventHandler = new MixedCountHandler();
+ private final MyErrorHandler errorHandler = new MyErrorHandler();
+}
\ No newline at end of file
diff --git a/ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCountHandler.java b/ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCountHandler.java
new file mode 100644
index 000000000..ec697fd1c
--- /dev/null
+++ b/ws/eclipse/Jdbc/src/main/java/sax/mixed/MixedCountHandler.java
@@ -0,0 +1,45 @@
+package sax.mixed;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+public class MixedCountHandler extends DefaultHandler {
+
+ enum EventType {openElement, closeElement, character, idle};
+ EventType lastEvent = EventType.idle;
+
+ private int mixedElementCount = 0;
+
+ @Override
+ public void startElement(String uri, String localName, String qName,
+ Attributes attributes) throws SAXException {
+ if (lastEvent == EventType.character) {
+ mixedElementCount++;
+ }
+ lastEvent = EventType.openElement;
+ }
+
+ @Override
+ public void endElement(String uri, String localName, String qName)
+ throws SAXException {
+ lastEvent = EventType.closeElement;
+ }
+
+ @Override
+ public void characters(char[] ch, int start, int length) throws SAXException {
+ final String content = new String(ch, start, length);
+
+ // We ignore whitespace completely
+ if (0 < content.trim().length()) {
+ if (lastEvent == EventType.closeElement) {
+ mixedElementCount++;
+ }
+ lastEvent = EventType.character;
+ }
+ }
+
+ public int getMixedElementCount() {
+ return mixedElementCount;
+ }
+}
\ No newline at end of file
diff --git a/ws/eclipse/Jdbc/src/main/java/sax/mixed/MyErrorHandler.java b/ws/eclipse/Jdbc/src/main/java/sax/mixed/MyErrorHandler.java
new file mode 100644
index 000000000..66e64a4d8
--- /dev/null
+++ b/ws/eclipse/Jdbc/src/main/java/sax/mixed/MyErrorHandler.java
@@ -0,0 +1,25 @@
+package sax.mixed;
+
+import org.xml.sax.SAXException;
+import org.xml.sax.SAXParseException;
+import org.xml.sax.ErrorHandler;
+
+/** Handle parsing errors */
+public class MyErrorHandler implements ErrorHandler {
+ /** @see ErrorHandler#warning(SAXParseException) */
+ public void warning(SAXParseException e) {
+ System.err.println("[Warning]" + getLocationString(e));
+ }
+ /** @see ErrorHandler#error(SAXParseException) */
+ public void error(SAXParseException e) {
+ System.err.println("[Error]" + getLocationString(e));
+ }
+ /** @see ErrorHandler#fatalError(SAXParseException) */
+ public void fatalError(SAXParseException e) throws SAXException{
+ System.err.println("[Fatal Error]" + getLocationString(e));
+ }
+ private String getLocationString(SAXParseException e) {
+ return " line " + e.getLineNumber() +
+ ", column " + e.getColumnNumber()+ ":" + e.getMessage();
+ }
+}
\ No newline at end of file
diff --git a/ws/eclipse/Jdbc/src/main/java/sax/mixed/mixed.xml b/ws/eclipse/Jdbc/src/main/java/sax/mixed/mixed.xml
new file mode 100644
index 000000000..e9487e8e2
--- /dev/null
+++ b/ws/eclipse/Jdbc/src/main/java/sax/mixed/mixed.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<top>
+ <a>Test 1</a>
+ <b>Some <c>mixed</c> content</b>
+ <d><nothingMixed/></d>
+ <d> <nothingMixed/> </d>
+</top>
\ No newline at end of file
--
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