org.glassfish.hk2.xml.internal.JAUtilities Maven / Gradle / Ivy
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package org.glassfish.hk2.xml.internal;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.NotFoundException;
import org.glassfish.hk2.api.MultiException;
import org.glassfish.hk2.utilities.cache.Computable;
import org.glassfish.hk2.utilities.cache.HybridCacheEntry;
import org.glassfish.hk2.utilities.cache.LRUHybridCache;
import org.glassfish.hk2.utilities.general.GeneralUtilities;
import org.glassfish.hk2.utilities.reflection.ClassReflectionHelper;
import org.glassfish.hk2.utilities.reflection.Logger;
import org.glassfish.hk2.utilities.reflection.ReflectionHelper;
import org.glassfish.hk2.xml.internal.alt.clazz.ClassAltClassImpl;
import org.glassfish.hk2.xml.jaxb.internal.BaseHK2JAXBBean;
/**
* @author jwells
*
*/
public class JAUtilities {
private final static String ID_PREFIX = "XmlServiceUID-";
private final static boolean DEBUG_PREGEN = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public Boolean run() {
return Boolean.parseBoolean(
System.getProperty("org.jvnet.hk2.properties.xmlservice.jaxb.pregenerated", "false"));
}
});
/* package */ final static boolean DEBUG_GENERATION_TIMING = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public Boolean run() {
return Boolean.parseBoolean(
System.getProperty("org.jvnet.hk2.properties.xmlservice.jaxb.generationtime", "false"));
}
});
public final static String GET = "get";
public final static String SET = "set";
public final static String IS = "is";
public final static String LOOKUP = "lookup";
public final static String ADD = "add";
public final static String REMOVE = "remove";
public final static String JAXB_DEFAULT_STRING = "##default";
public final static String JAXB_DEFAULT_DEFAULT = "\u0000";
private final ClassReflectionHelper classReflectionHelper;
private final ClassPool defaultClassPool = ClassPool.getDefault(); // TODO: We probably need to be more sophisticated about this
private final CtClass superClazz;
private final Computer computer;
private final LRUHybridCache, Model> interface2ModelCache;
private final AtomicLong idGenerator = new AtomicLong();
/* package */ JAUtilities(ClassReflectionHelper classReflectionHelper) {
this.classReflectionHelper = classReflectionHelper;
try {
superClazz = defaultClassPool.get(BaseHK2JAXBBean.class.getName());
}
catch (NotFoundException e) {
throw new MultiException(e);
}
computer = new Computer(this);
interface2ModelCache = new LRUHybridCache, Model>(Integer.MAX_VALUE - 1, computer);
}
/**
* Gets the XmlService wide unique identifier
* @return A unique identifier for unkeyed multi-children
*/
public String getUniqueId() {
return ID_PREFIX + idGenerator.getAndAdd(1L);
}
/**
* Goes from interface name (fully qualified) to the associated Model
*
* @param iFace Fully qualified interface name (not proxy)
* @return The Model for the interface
*/
public Model getModel(Class iFace) {
HybridCacheEntry entry = interface2ModelCache.compute(iFace);
return entry.getValue();
}
public synchronized void convertRootAndLeaves(Class root, boolean mustConvertAll) {
long currentTime = 0L;
if (DEBUG_GENERATION_TIMING) {
computer.numGenerated = 0;
computer.numPreGenerated = 0;
currentTime = System.currentTimeMillis();
}
Model rootModel = interface2ModelCache.compute(root).getValue();
if (!mustConvertAll) {
if (DEBUG_GENERATION_TIMING) {
currentTime = System.currentTimeMillis() - currentTime;
Logger.getLogger().debug("Took " + currentTime + " to perform " +
computer.numGenerated + " generations with " +
computer.numPreGenerated + " pre generated with a lazy parser");
}
return;
}
HashSet> cycles = new HashSet>();
cycles.add(root);
convertAllRootAndLeaves(rootModel, cycles);
if (DEBUG_GENERATION_TIMING) {
currentTime = System.currentTimeMillis() - currentTime;
Logger.getLogger().debug("Took " + currentTime + " milliseconds to perform " +
computer.numGenerated + " generations with " +
computer.numPreGenerated + " pre generated with a non-lazy parser");
}
}
private void convertAllRootAndLeaves(Model rootModel, HashSet> cycles) {
for (ParentedModel parentModel : rootModel.getAllChildren()) {
Class convertMe = parentModel.getChildModel().getOriginalInterfaceAsClass();
// Remove cycles
if (cycles.contains(convertMe)) continue;
cycles.add(convertMe);
Model childModel = interface2ModelCache.compute(convertMe).getValue();
convertAllRootAndLeaves(childModel, cycles);
}
}
private static Map convertDefaultChildValueArray(String[] values) {
LinkedHashMap retVal = new LinkedHashMap();
if (values == null) return retVal;
for (String value : values) {
value = value.trim();
if ("".equals(value)) continue;
if (value.charAt(0) == '=') {
throw new AssertionError("First character of " + value + " may not be an =");
}
int indexOfEquals = value.indexOf('=');
if (indexOfEquals < 0) {
retVal.put(value, null);
}
else {
String key = value.substring(0, indexOfEquals);
String attValue;
if (indexOfEquals >= (value.length() - 1)) {
attValue = null;
}
else {
attValue = value.substring(indexOfEquals + 1);
}
retVal.put(key, attValue);
}
}
return retVal;
}
private CtClass getBaseClass() {
return superClazz;
}
private ClassPool getClassPool() {
return defaultClassPool;
}
public int getNumGenerated() {
return computer.numGenerated;
}
public int getNumPreGenerated() {
return computer.numPreGenerated;
}
private final class Computer implements Computable, HybridCacheEntry> {
private final JAUtilities jaUtilities;
private int numGenerated;
private int numPreGenerated;
private Computer(JAUtilities jaUtilities) {
this.jaUtilities = jaUtilities;
}
/* (non-Javadoc)
* @see org.glassfish.hk2.utilities.cache.Computable#compute(java.lang.Object)
*/
@Override
public HybridCacheEntry compute(Class key) {
String iFaceName = key.getName();
String proxyName = Utilities.getProxyNameFromInterfaceName(iFaceName);
Class proxyClass = GeneralUtilities.loadClass(key.getClassLoader(), proxyName);
if (proxyClass == null) {
numGenerated++;
if (DEBUG_PREGEN) {
Logger.getLogger().debug("Pregenerating proxy for " + key.getName());
}
// Generate the proxy
try {
CtClass generated = Generator.generate(new ClassAltClassImpl(key, classReflectionHelper),
jaUtilities.getBaseClass(),
jaUtilities.getClassPool());
proxyClass = generated.toClass(key.getClassLoader(), key.getProtectionDomain());
}
catch (RuntimeException re) {
throw re;
}
catch (Throwable th) {
throw new RuntimeException(th);
}
}
else {
if (DEBUG_PREGEN) {
Logger.getLogger().debug("Proxy for " + key.getName() + " was pregenerated");
}
numPreGenerated++;
}
Method getModelMethod;
try {
getModelMethod = proxyClass.getMethod(Generator.STATIC_GET_MODEL_METHOD_NAME, new Class[0]);
}
catch (NoSuchMethodException e) {
throw new AssertionError("This proxy must have been generated with an old generator, it has no __getModel method for " + key.getName());
}
Model retVal;
try {
retVal = (Model) ReflectionHelper.invoke(null, getModelMethod, new Object[0], false);
}
catch (RuntimeException re) {
throw re;
}
catch (Throwable e) {
throw new RuntimeException(e);
}
if (retVal == null) {
throw new AssertionError("The __getModel method on " + proxyClass.getName() + " returned null");
}
retVal.setJAUtilities(jaUtilities, key.getClassLoader());
return interface2ModelCache.createCacheEntry(key, retVal, false);
}
}
}
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