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PerfDoc.java
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PerfDoc.java
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package org.jdom2.contrib.perf;
import java.io.CharArrayReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.ext.DefaultHandler2;
import org.jdom2.Attribute;
import org.jdom2.CDATA;
import org.jdom2.Comment;
import org.jdom2.Content;
import org.jdom2.DefaultJDOMFactory;
import org.jdom2.DocType;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.EntityRef;
import org.jdom2.Namespace;
import org.jdom2.ProcessingInstruction;
import org.jdom2.Text;
import org.jdom2.UncheckedJDOMFactory;
import org.jdom2.filter.ElementFilter;
import org.jdom2.input.DOMBuilder;
import org.jdom2.input.SAXBuilder;
import org.jdom2.input.StAXEventBuilder;
import org.jdom2.input.StAXStreamBuilder;
import org.jdom2.input.sax.SAXHandler;
import org.jdom2.output.Format;
import org.jdom2.output.SAXOutputter;
import org.jdom2.output.XMLOutputter;
import org.jdom2.util.ArrayCopy;
import org.jdom2.xpath.XPath;
@SuppressWarnings("javadoc")
public class PerfDoc {
private class SAXLoadRunnable implements TimeRunnable {
private final int type;
SAXLoadRunnable(int type) {
this.type = type;
}
@Override
public void run() throws Exception {
Document doc = subload(type);
if (document == null) {
document = doc;
}
}
}
private static class DevNull extends Writer {
int counter = 0;
public void reset() {
counter = 0;
}
public int getCounter() {
return counter;
}
@Override
public void write(char[] cbuf, int off, int len) throws IOException {
// do nothing
counter++;
}
@Override
public void flush() throws IOException {
// do nothing
counter++;
}
@Override
public void close() throws IOException {
// do nothing
counter++;
}
@Override
public void write(int c) throws IOException {
// do nothing
counter++;
}
@Override
public void write(char[] cbuf) throws IOException {
// do nothing
counter++;
}
@Override
public void write(String str) throws IOException {
// do nothing
counter++;
}
@Override
public void write(String str, int off, int len) throws IOException {
// do nothing
counter++;
}
@Override
public Writer append(CharSequence csq) throws IOException {
counter++;
return this;
}
@Override
public Writer append(CharSequence csq, int start, int end) throws IOException {
counter++;
return this;
}
@Override
public Writer append(char c) throws IOException {
counter++;
return this;
}
}
private static final DevNull devnull = new DevNull();
private final File infile;
private long saxTime = -1L;
private long domTime = -1L;
private long staxTime = -1L;
private long staxETime = -1L;
private long saxDTime = -1L;
private long domDTime = -1L;
private long staxDTime = -1L;
private long staxDETime = -1L;
private long loadMem = -1L;
private long dumpTime = -1L;
private long xpathTime = -1L;
private long dupeTime = -1L;
private long scanTime = -1L;
private long checkedTime = -1L;
private long uncheckedTime = -1L;
private Document document = null;
private final char[] chars;
public PerfDoc(File file) throws IOException {
infile = file;
char[] fchars = new char[(int)infile.length()];
int len = 0;
int cnt = 0;
FileReader fr = null;
try {
fr = new FileReader(infile);
while ((cnt = fr.read(fchars, len, fchars.length - len)) >= 0) {
if (cnt == 0 && len == fchars.length) {
fchars = ArrayCopy.copyOf(fchars, fchars.length + 10240);
}
len += cnt;
}
fchars = ArrayCopy.copyOf(fchars, len);
} finally {
if (fr != null) {
fr.close();
}
fr = null;
}
this.chars = fchars;
}
public File getFile() {
return infile;
}
public long saxLoad() throws Exception {
final long startmem = PerfTest.usedMem();
saxTime = PerfTest.timeRun(new SAXLoadRunnable(0) );
loadMem = PerfTest.usedMem() - startmem;
saxDTime = PerfTest.timeRun(new SAXLoadRunnable(8) );
return saxTime;
}
public long domLoad() throws Exception {
domTime = PerfTest.timeRun( new SAXLoadRunnable(1) );
domDTime = PerfTest.timeRun( new SAXLoadRunnable(9) );
return domTime;
}
public long staxLoad() throws Exception {
staxTime = PerfTest.timeRun( new SAXLoadRunnable(2) );
staxDTime = PerfTest.timeRun( new SAXLoadRunnable(10) );
return staxTime;
}
public long staxELoad() throws Exception {
staxETime = PerfTest.timeRun( new SAXLoadRunnable(3) );
staxDETime = PerfTest.timeRun( new SAXLoadRunnable(11) );
return staxETime;
}
public Document subload(int type) throws Exception {
CharArrayReader car = new CharArrayReader(chars);
switch (type) {
case 0:
SAXBuilder sax = new SAXBuilder();
sax.setJDOMFactory(new UncheckedJDOMFactory());
return sax.build(car);
case 1:
DOMBuilder dom = new DOMBuilder();
dom.setFactory(new UncheckedJDOMFactory());
InputSource source = new InputSource(car);
return dom.build(getDocument(source, false));
case 2:
StAXStreamBuilder stax = new StAXStreamBuilder();
stax.setFactory(new UncheckedJDOMFactory());
XMLStreamReader reader = XMLInputFactory.newInstance().createXMLStreamReader(car);
return stax.build(reader);
case 3:
StAXEventBuilder staxe = new StAXEventBuilder();
staxe.setFactory(new UncheckedJDOMFactory());
XMLEventReader events = XMLInputFactory.newInstance().createXMLEventReader(car);
return staxe.build(events);
case 8:
SAXBuilder dsax = new SAXBuilder();
DefaultHandler2 def = new DefaultHandler2();
XMLReader sread = dsax.getXMLReaderFactory().createXMLReader();
sread.setContentHandler(def);
sread.setDTDHandler(def);
sread.setEntityResolver(def);
sread.setErrorHandler(def);
sread.setProperty("http://xml.org/sax/properties/lexical-handler",
def);
sread.parse(new InputSource(car));
return null;
case 9:
InputSource dsource = new InputSource(car);
getDocument(dsource, false);
return null;
case 10:
XMLStreamReader dreader = XMLInputFactory.newInstance().createXMLStreamReader(car);
int sum = 0;
while (dreader.hasNext()) {
sum += dreader.next();
}
System.out.println("Sum " + sum);
return null;
case 11:
XMLEventReader dereader = XMLInputFactory.newInstance().createXMLEventReader(car);
int esum = 0;
while (dereader.hasNext()) {
esum += dereader.nextEvent().getEventType();
}
System.out.println("Sum " + esum);
return null;
}
return null;
}
public int recurse(Element emt) {
int cnt = 1;
for (Object kid : emt.getChildren()) {
cnt += recurse((Element)kid);
}
return cnt;
}
public long scan() throws Exception {
scanTime = PerfTest.timeRun(new TimeRunnable() {
@Override
public void run() {
int elements = 0;
Iterator<Content> it = document.getDescendants();
while (it.hasNext()) {
if (it.next() instanceof Element) {
elements++;
}
}
int felements = 0;
Iterator<?> et = document.getDescendants(new ElementFilter());
while (et.hasNext()) {
et.next();
felements++;
}
if (felements != elements) {
System.out.printf("Different counts Descendants=%d Elements=%d\n", elements, felements);
}
int rcnt = recurse(document.getRootElement());
if (rcnt != elements) {
System.out.printf("Different counts Descendants=%d Recurse=%d\n", elements, rcnt);
}
}
});
return scanTime;
}
public long dump () throws Exception {
dumpTime = PerfTest.timeRun(new TimeRunnable() {
@Override
public void run() throws Exception {
long start = System.nanoTime();
dump(Format.getCompactFormat());
long comp = System.nanoTime();
dump(Format.getPrettyFormat());
long pretty = System.nanoTime();
dump(Format.getRawFormat());
long raw = System.nanoTime();
raw -= pretty;
pretty -= comp;
comp -= start;
System.out.printf("Raw=%d Pretty=%8d Compact=%8d\n", raw, pretty, comp);
}
});
return dumpTime;
}
private void dump(Format format) throws IOException {
XMLOutputter xout = new XMLOutputter(format);
devnull.reset();
System.setProperty("NamespaceStack", "");
xout.output(document, devnull);
System.clearProperty("NamespaceStack");
if (devnull.getCounter() <= 0) {
throw new IllegalStateException("Needed a counter");
}
}
public long xpath() throws Exception {
xpathTime = PerfTest.timeRun(new TimeRunnable() {
@Override
public void run() throws Exception {
XPath patha = XPath.newInstance("//@null");
patha.selectNodes(document);
// select everything
XPath pathb = XPath.newInstance("//node()");
pathb.selectNodes(document);
}
});
return xpathTime;
}
private Collection<Content>duplicateContent(List<? extends Content> content) {
ArrayList<Content>ret = new ArrayList<Content>(content.size());
for (Content c : content) {
if (c instanceof Element) {
Element emt = (Element)c;
Element ne = new Element(emt.getName(), emt.getNamespacePrefix(), emt.getNamespaceURI());
for (Object oatt : emt.getAttributes()) {
Attribute att = (Attribute)oatt;
Attribute a = new Attribute(att.getName(), att.getValue(),
att.getAttributeType(),
Namespace.getNamespace(att.getNamespacePrefix(), att.getNamespaceURI()));
emt.setAttribute(a);
}
for (Object ns : emt.getAdditionalNamespaces()) {
ne.addNamespaceDeclaration((Namespace)ns);
}
ne.addContent(duplicateContent(emt.getContent()));
ret.add(ne);
} else if (c instanceof CDATA) {
ret.add(new CDATA(((CDATA)c).getText()));
} else if (c instanceof Comment) {
ret.add(new Comment(((Comment)c).getText()));
} else if (c instanceof EntityRef) {
EntityRef er = (EntityRef)c;
ret.add(new EntityRef(er.getName(), er.getPublicID(), er.getSystemID()));
} else if (c instanceof Text) {
ret.add(new Text(((Text)c).getText()));
} else if (c instanceof ProcessingInstruction) {
ProcessingInstruction pi = (ProcessingInstruction)c;
ret.add(new ProcessingInstruction(pi.getTarget(), pi.getData()));
} else if (c instanceof DocType) {
DocType dt = (DocType)c;
DocType ndt = new DocType(dt.getElementName(), dt.getPublicID(), dt.getSystemID());
if (dt.getInternalSubset() != null) {
ndt.setInternalSubset(dt.getInternalSubset());
}
ret.add(ndt);
} else {
throw new IllegalStateException("Unknown content " + c);
}
}
return ret;
}
public long duplicate() throws Exception {
final XMLOutputter xout = new XMLOutputter(Format.getRawFormat());
final String orig = xout.outputString(document);
dupeTime = PerfTest.timeRun(new TimeRunnable() {
@Override
public void run() throws Exception {
// select nothing.
Document doc = new Document();
doc.addContent(duplicateContent(document.getContent()));
String dupe = xout.outputString(doc);
if (!orig.equals(dupe)) {
throw new IllegalStateException("Bad clone!");
}
}
});
return dupeTime;
}
public long checkedParse() throws Exception {
final XMLOutputter xout = new XMLOutputter(Format.getRawFormat());
final String orig = xout.outputString(document);
checkedTime = PerfTest.timeRun(new TimeRunnable() {
@Override
public void run() throws Exception {
// select nothing.
SAXHandler handler = new SAXHandler(new DefaultJDOMFactory());
SAXOutputter saxout = new SAXOutputter(handler, handler, handler, handler, handler);
saxout.output(document);
Document doc = handler.getDocument();
String dupe = xout.outputString(doc);
if (!orig.equals(dupe)) {
throw new IllegalStateException("Bad clone!");
}
}
});
return checkedTime;
}
public long unCheckedParse() throws Exception {
final XMLOutputter xout = new XMLOutputter(Format.getRawFormat());
final String orig = xout.outputString(document);
uncheckedTime = PerfTest.timeRun(new TimeRunnable() {
@Override
public void run() throws Exception {
// select nothing.
SAXHandler handler = new SAXHandler(new UncheckedJDOMFactory());
SAXOutputter saxout = new SAXOutputter(handler, handler, handler, handler, handler);
saxout.output(document);
Document doc = handler.getDocument();
String dupe = xout.outputString(doc);
if (!orig.equals(dupe)) {
throw new IllegalStateException("Bad clone!");
}
}
});
return uncheckedTime;
}
public long getSAXLoadTime() {
return saxTime;
}
public long getLoadMem() {
return loadMem;
}
public long getDumpTime() {
return dumpTime;
}
public long getDupeTime() {
return dupeTime;
}
public long getXpathTime() {
return xpathTime;
}
public long getCheckedTime() {
return checkedTime;
}
public long getUncheckedTime() {
return uncheckedTime;
}
public long getScanTime() {
return scanTime;
}
public long getSaxDTime() {
return saxDTime;
}
public long getDomDTime() {
return domDTime;
}
public long getStaxDTime() {
return staxDTime;
}
public long getStaxETime() {
return staxETime;
}
public long getStaxDETime() {
return staxDETime;
}
public Document getDocument() {
return document;
}
@Override
public String toString() {
return String.format("PerfDoc %s mem=%d sax=%d dom=%d stax=%d scan=%d xpath=%d dump=%d",
infile.getPath(), loadMem, saxTime, domTime, staxTime, scanTime, xpathTime, dumpTime);
}
private static final org.w3c.dom.Document getDocument(InputSource data, boolean xsdvalidate) throws ParserConfigurationException, SAXException, IOException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setValidating(xsdvalidate);
dbf.setExpandEntityReferences(false);
if (xsdvalidate) {
dbf.setAttribute("http://java.sun.com/xml/jaxp/properties/schemaLanguage", "http://www.w3.org/2001/XMLSchema");
}
DocumentBuilder db = dbf.newDocumentBuilder();
return db.parse(data);
}
}