/*
* Copyright (c) 2002-2006 by OpenSymphony
* All rights reserved.
*/
package com.opensymphony.xwork2.config.impl;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.DefaultTextProvider;
import com.opensymphony.xwork2.ObjectFactory;
import com.opensymphony.xwork2.TextProvider;
import com.opensymphony.xwork2.config.*;
import com.opensymphony.xwork2.config.entities.*;
import com.opensymphony.xwork2.config.providers.InterceptorBuilder;
import com.opensymphony.xwork2.conversion.ObjectTypeDeterminer;
import com.opensymphony.xwork2.conversion.impl.DefaultObjectTypeDeterminer;
import com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter;
import com.opensymphony.xwork2.conversion.impl.XWorkConverter;
import com.opensymphony.xwork2.inject.*;
import com.opensymphony.xwork2.ognl.OgnlReflectionProvider;
import com.opensymphony.xwork2.ognl.OgnlUtil;
import com.opensymphony.xwork2.ognl.OgnlValueStackFactory;
import com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor;
import com.opensymphony.xwork2.util.CompoundRoot;
import com.opensymphony.xwork2.util.PatternMatcher;
import com.opensymphony.xwork2.util.ValueStack;
import com.opensymphony.xwork2.util.ValueStackFactory;
import com.opensymphony.xwork2.util.location.LocatableProperties;
import com.opensymphony.xwork2.util.logging.Logger;
import com.opensymphony.xwork2.util.logging.LoggerFactory;
import com.opensymphony.xwork2.util.reflection.ReflectionProvider;
import ognl.PropertyAccessor;
import java.util.*;
/**
* DefaultConfiguration
*
* @author Jason Carreira
* Created Feb 24, 2003 7:38:06 AM
*/
public class DefaultConfiguration implements Configuration {
protected static final Logger LOG = LoggerFactory.getLogger(DefaultConfiguration.class);
// Programmatic Action Configurations
protected Map<String, PackageConfig> packageContexts = new LinkedHashMap<String, PackageConfig>();
protected RuntimeConfiguration runtimeConfiguration;
protected Container container;
protected String defaultFrameworkBeanName;
protected Set<String> loadedFileNames = new TreeSet<String>();
protected List<UnknownHandlerConfig> unknownHandlerStack;
ObjectFactory objectFactory;
public DefaultConfiguration() {
this("xwork");
}
public DefaultConfiguration(String defaultBeanName) {
this.defaultFrameworkBeanName = defaultBeanName;
}
public PackageConfig getPackageConfig(String name) {
return packageContexts.get(name);
}
public List<UnknownHandlerConfig> getUnknownHandlerStack() {
return unknownHandlerStack;
}
public void setUnknownHandlerStack(List<UnknownHandlerConfig> unknownHandlerStack) {
this.unknownHandlerStack = unknownHandlerStack;
}
public Set<String> getPackageConfigNames() {
return packageContexts.keySet();
}
public Map<String, PackageConfig> getPackageConfigs() {
return packageContexts;
}
public Set<String> getLoadedFileNames() {
return loadedFileNames;
}
public RuntimeConfiguration getRuntimeConfiguration() {
return runtimeConfiguration;
}
/**
* @return the container
*/
public Container getContainer() {
return container;
}
public void addPackageConfig(String name, PackageConfig packageContext) {
PackageConfig check = packageContexts.get(name);
if (check != null) {
if (check.getLocation() != null && packageContext.getLocation() != null
&& check.getLocation().equals(packageContext.getLocation())) {
if (LOG.isDebugEnabled()) {
LOG.debug("The package name '" + name
+ "' is already been loaded by the same location and could be removed: "
+ packageContext.getLocation());
}
} else {
throw new ConfigurationException("The package name '" + name
+ "' at location "+packageContext.getLocation()
+ " is already been used by another package at location " + check.getLocation(),
packageContext);
}
}
packageContexts.put(name, packageContext);
}
public PackageConfig removePackageConfig(String packageName) {
return packageContexts.remove(packageName);
}
/**
* Allows the configuration to clean up any resources used
*/
public void destroy() {
packageContexts.clear();
loadedFileNames.clear();
}
public void rebuildRuntimeConfiguration() {
runtimeConfiguration = buildRuntimeConfiguration();
}
/**
* Calls the ConfigurationProviderFactory.getConfig() to tell it to reload the configuration and then calls
* buildRuntimeConfiguration().
*
* @throws ConfigurationException
*/
public synchronized void reload(List<ConfigurationProvider> providers) throws ConfigurationException {
// Silly copy necessary due to lack of ability to cast generic lists
List<ContainerProvider> contProviders = new ArrayList<ContainerProvider>();
contProviders.addAll(providers);
reloadContainer(contProviders);
}
/**
* Calls the ConfigurationProviderFactory.getConfig() to tell it to reload the configuration and then calls
* buildRuntimeConfiguration().
*
* @throws ConfigurationException
*/
public synchronized List<PackageProvider> reloadContainer(List<ContainerProvider> providers) throws ConfigurationException {
packageContexts.clear();
loadedFileNames.clear();
List<PackageProvider> packageProviders = new ArrayList<PackageProvider>();
ContainerProperties props = new ContainerProperties();
ContainerBuilder builder = new ContainerBuilder();
for (final ContainerProvider containerProvider : providers)
{
containerProvider.init(this);
containerProvider.register(builder, props);
}
props.setConstants(builder);
builder.factory(Configuration.class, new Factory<Configuration>() {
public Configuration create(Context context) throws Exception {
return DefaultConfiguration.this;
}
});
ActionContext oldContext = ActionContext.getContext();
try {
// Set the bootstrap container for the purposes of factory creation
Container bootstrap = createBootstrapContainer();
setContext(bootstrap);
container = builder.create(false);
setContext(container);
objectFactory = container.getInstance(ObjectFactory.class);
// Process the configuration providers first
for (final ContainerProvider containerProvider : providers)
{
if (containerProvider instanceof PackageProvider) {
container.inject(containerProvider);
((PackageProvider)containerProvider).loadPackages();
packageProviders.add((PackageProvider)containerProvider);
}
}
// Then process any package providers from the plugins
Set<String> packageProviderNames = container.getInstanceNames(PackageProvider.class);
if (packageProviderNames != null) {
for (String name : packageProviderNames) {
PackageProvider provider = container.getInstance(PackageProvider.class, name);
provider.init(this);
provider.loadPackages();
packageProviders.add(provider);
}
}
rebuildRuntimeConfiguration();
} finally {
if (oldContext == null) {
ActionContext.setContext(null);
}
}
return packageProviders;
}
protected ActionContext setContext(Container cont) {
ActionContext context = ActionContext.getContext();
if (context == null) {
ValueStack vs = cont.getInstance(ValueStackFactory.class).createValueStack();
context = new ActionContext(vs.getContext());
ActionContext.setContext(context);
}
return context;
}
protected Container createBootstrapContainer() {
ContainerBuilder builder = new ContainerBuilder();
builder.factory(ObjectFactory.class, Scope.SINGLETON);
builder.factory(ReflectionProvider.class, OgnlReflectionProvider.class, Scope.SINGLETON);
builder.factory(ValueStackFactory.class, OgnlValueStackFactory.class, Scope.SINGLETON);
builder.factory(XWorkConverter.class, Scope.SINGLETON);
builder.factory(XWorkBasicConverter.class, Scope.SINGLETON);
builder.factory(TextProvider.class, "system", DefaultTextProvider.class, Scope.SINGLETON);
builder.factory(ObjectTypeDeterminer.class, DefaultObjectTypeDeterminer.class, Scope.SINGLETON);
builder.factory(PropertyAccessor.class, CompoundRoot.class.getName(), CompoundRootAccessor.class, Scope.SINGLETON);
builder.factory(OgnlUtil.class, Scope.SINGLETON);
builder.constant("devMode", "false");
builder.constant("logMissingProperties", "false");
return builder.create(true);
}
/**
* This builds the internal runtime configuration used by Xwork for finding and configuring Actions from the
* programmatic configuration data structures. All of the old runtime configuration will be discarded and rebuilt.
*
* <p>
* It basically flattens the data structures to make the information easier to access. It will take
* an {@link ActionConfig} and combine its data with all inherited dast. For example, if the {@link ActionConfig}
* is in a package that contains a global result and it also contains a result, the resulting {@link ActionConfig}
* will have two results.
*/
protected synchronized RuntimeConfiguration buildRuntimeConfiguration() throws ConfigurationException {
Map<String, Map<String, ActionConfig>> namespaceActionConfigs = new LinkedHashMap<String, Map<String, ActionConfig>>();
Map<String, String> namespaceConfigs = new LinkedHashMap<String, String>();
for (PackageConfig packageConfig : packageContexts.values()) {
if (!packageConfig.isAbstract()) {
String namespace = packageConfig.getNamespace();
Map<String, ActionConfig> configs = namespaceActionConfigs.get(namespace);
if (configs == null) {
configs = new LinkedHashMap<String, ActionConfig>();
}
Map<String, ActionConfig> actionConfigs = packageConfig.getAllActionConfigs();
for (Object o : actionConfigs.keySet()) {
String actionName = (String) o;
ActionConfig baseConfig = actionConfigs.get(actionName);
configs.put(actionName, buildFullActionConfig(packageConfig, baseConfig));
}
namespaceActionConfigs.put(namespace, configs);
if (packageConfig.getFullDefaultActionRef() != null) {
namespaceConfigs.put(namespace, packageConfig.getFullDefaultActionRef());
}
}
}
return new RuntimeConfigurationImpl(namespaceActionConfigs, namespaceConfigs);
}
private void setDefaultResults(Map<String, ResultConfig> results, PackageConfig packageContext) {
String defaultResult = packageContext.getFullDefaultResultType();
for (Map.Entry<String, ResultConfig> entry : results.entrySet()) {
if (entry.getValue() == null) {
ResultTypeConfig resultTypeConfig = packageContext.getAllResultTypeConfigs().get(defaultResult);
entry.setValue(new ResultConfig.Builder(null, resultTypeConfig.getClassName()).build());
}
}
}
/**
* Builds the full runtime actionconfig with all of the defaults and inheritance
*
* @param packageContext the PackageConfig which holds the base config we're building from
* @param baseConfig the ActionConfig which holds only the configuration specific to itself, without the defaults
* and inheritance
* @return a full ActionConfig for runtime configuration with all of the inherited and default params
* @throws com.opensymphony.xwork2.config.ConfigurationException
*
*/
private ActionConfig buildFullActionConfig(PackageConfig packageContext, ActionConfig baseConfig) throws ConfigurationException {
Map<String, String> params = new TreeMap<String, String>(baseConfig.getParams());
Map<String, ResultConfig> results = new TreeMap<String, ResultConfig>();
if (!baseConfig.getPackageName().equals(packageContext.getName()) && packageContexts.containsKey(baseConfig.getPackageName())) {
results.putAll(packageContexts.get(baseConfig.getPackageName()).getAllGlobalResults());
} else {
results.putAll(packageContext.getAllGlobalResults());
}
results.putAll(baseConfig.getResults());
setDefaultResults(results, packageContext);
List<InterceptorMapping> interceptors = new ArrayList<InterceptorMapping>(baseConfig.getInterceptors());
if (interceptors.size() <= 0) {
String defaultInterceptorRefName = packageContext.getFullDefaultInterceptorRef();
if (defaultInterceptorRefName != null) {
interceptors.addAll(InterceptorBuilder.constructInterceptorReference(new PackageConfig.Builder(packageContext), defaultInterceptorRefName,
new LinkedHashMap<String, String>(), packageContext.getLocation(), objectFactory));
}
}
return new ActionConfig.Builder(baseConfig)
.addParams(params)
.addResultConfigs(results)
.defaultClassName(packageContext.getDefaultClassRef()) // fill in default if non class has been provided
.interceptors(interceptors)
.addExceptionMappings(packageContext.getAllExceptionMappingConfigs())
.build();
}
private class RuntimeConfigurationImpl implements RuntimeConfiguration {
private Map<String, Map<String, ActionConfig>> namespaceActionConfigs;
private Map<String, ActionConfigMatcher> namespaceActionConfigMatchers;
private NamespaceMatcher namespaceMatcher;
private Map<String, String> namespaceConfigs;
public RuntimeConfigurationImpl(Map<String, Map<String, ActionConfig>> namespaceActionConfigs, Map<String, String> namespaceConfigs) {
this.namespaceActionConfigs = namespaceActionConfigs;
this.namespaceConfigs = namespaceConfigs;
PatternMatcher<int[]> matcher = container.getInstance(PatternMatcher.class);
this.namespaceActionConfigMatchers = new LinkedHashMap<String, ActionConfigMatcher>();
this.namespaceMatcher = new NamespaceMatcher(matcher, namespaceActionConfigs.keySet());
for (String ns : namespaceActionConfigs.keySet()) {
namespaceActionConfigMatchers.put(ns,
new ActionConfigMatcher(matcher,
namespaceActionConfigs.get(ns), true));
}
}
/**
* Gets the configuration information for an action name, or returns null if the
* name is not recognized.
*
* @param name the name of the action
* @param namespace the namespace for the action or null for the empty namespace, ""
* @return the configuration information for action requested
*/
public synchronized ActionConfig getActionConfig(String namespace, String name) {
ActionConfig config = findActionConfigInNamespace(namespace, name);
// try wildcarded namespaces
if (config == null) {
NamespaceMatch match = namespaceMatcher.match(namespace);
if (match != null) {
config = findActionConfigInNamespace(match.getPattern(), name);
// If config found, place all the matches found in the namespace processing in the action's parameters
if (config != null) {
config = new ActionConfig.Builder(config)
.addParams(match.getVariables())
.build();
}
}
}
// fail over to empty namespace
if ((config == null) && (namespace != null) && (!"".equals(namespace.trim()))) {
config = findActionConfigInNamespace("", name);
}
return config;
}
ActionConfig findActionConfigInNamespace(String namespace, String name) {
ActionConfig config = null;
if (namespace == null) {
namespace = "";
}
Map<String, ActionConfig> actions = namespaceActionConfigs.get(namespace);
if (actions != null) {
config = actions.get(name);
// Check wildcards
if (config == null) {
config = namespaceActionConfigMatchers.get(namespace).match(name);
// fail over to default action
if (config == null) {
String defaultActionRef = namespaceConfigs.get(namespace);
if (defaultActionRef != null) {
config = actions.get(defaultActionRef);
}
}
}
}
return config;
}
/**
* Gets the configuration settings for every action.
*
* @return a Map of namespace - > Map of ActionConfig objects, with the key being the action name
*/
public synchronized Map<String, Map<String, ActionConfig>> getActionConfigs() {
return namespaceActionConfigs;
}
@Override
public String toString() {
StringBuilder buff = new StringBuilder("RuntimeConfiguration - actions are\n");
for (String namespace : namespaceActionConfigs.keySet()) {
Map<String, ActionConfig> actionConfigs = namespaceActionConfigs.get(namespace);
for (String s : actionConfigs.keySet()) {
buff.append(namespace).append("/").append(s).append("\n");
}
}
return buff.toString();
}
}
class ContainerProperties extends LocatableProperties {
private static final long serialVersionUID = -7320625750836896089L;
@Override
public Object setProperty(String key, String value) {
String oldValue = getProperty(key);
if (oldValue != null && !oldValue.equals(value) && !defaultFrameworkBeanName.equals(oldValue)) {
LOG.info("Overriding property "+key+" - old value: "+oldValue+" new value: "+value);
}
return super.setProperty(key, value);
}
public void setConstants(ContainerBuilder builder) {
for (Object keyobj : keySet()) {
String key = (String)keyobj;
builder.factory(String.class, key,
new LocatableConstantFactory<String>(getProperty(key), getPropertyLocation(key)));
}
}
}
}
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