/**
* Query all purchases made at a specific store for 3 specific products. This query uses
* cross-cache joins between {@link DimStore}, {@link DimProduct} objects stored in {@code
* 'replicated'} cache and {@link FactPurchase} objects stored in {@code 'partitioned'} cache.
*
* @throws IgniteException If failed.
*/
private static void queryProductPurchases() {
IgniteCache<Integer, FactPurchase> factCache = Ignition.ignite().cache(PARTITIONED_CACHE_NAME);
// All purchases for certain product made at store2.
// =================================================
DimProduct p1 = rand(dataProduct.values());
DimProduct p2 = rand(dataProduct.values());
DimProduct p3 = rand(dataProduct.values());
System.out.println(
"IDs of products [p1=" + p1.getId() + ", p2=" + p2.getId() + ", p3=" + p3.getId() + ']');
// Create cross cache query to get all purchases made at store2
// for specified products.
QueryCursor<Cache.Entry<Integer, FactPurchase>> prodPurchases =
factCache.query(
new SqlQuery(
FactPurchase.class,
"from \""
+ REPLICATED_CACHE_NAME
+ "\".DimStore, \""
+ REPLICATED_CACHE_NAME
+ "\".DimProduct, "
+ "\""
+ PARTITIONED_CACHE_NAME
+ "\".FactPurchase "
+ "where DimStore.id=FactPurchase.storeId and DimProduct.id=FactPurchase.productId "
+ "and DimStore.name=? and DimProduct.id in(?, ?, ?)")
.setArgs("Store2", p1.getId(), p2.getId(), p3.getId()));
printQueryResults(
"All purchases made at store2 for 3 specific products:", prodPurchases.getAll());
}
/**
* Populate cache with {@code 'facts'}, which in our case are {@link FactPurchase} objects.
*
* @param factCache Cache to populate.
* @throws IgniteException If failed.
*/
private static void populateFacts(Cache<Integer, FactPurchase> factCache) throws IgniteException {
for (int i = 0; i < 100; i++) {
int id = idGen++;
DimStore store = rand(dataStore.values());
DimProduct prod = rand(dataProduct.values());
factCache.put(id, new FactPurchase(id, prod.getId(), store.getId(), (i + 1)));
}
}
/**
* @param springCfgPath Spring configuration file path.
* @return Grid configuration.
* @throws Exception If failed.
*/
protected static IgniteConfiguration loadConfiguration(String springCfgPath) throws Exception {
URL url;
try {
url = new URL(springCfgPath);
} catch (MalformedURLException e) {
url = IgniteUtils.resolveIgniteUrl(springCfgPath);
if (url == null)
throw new IgniteCheckedException(
"Spring XML configuration path is invalid: "
+ springCfgPath
+ ". Note that this path should be either absolute or a relative local file system path, "
+ "relative to META-INF in classpath or valid URL to IGNITE_HOME.",
e);
}
GenericApplicationContext springCtx;
try {
springCtx = new GenericApplicationContext();
new XmlBeanDefinitionReader(springCtx).loadBeanDefinitions(new UrlResource(url));
springCtx.refresh();
} catch (BeansException e) {
throw new Exception(
"Failed to instantiate Spring XML application context [springUrl="
+ url
+ ", err="
+ e.getMessage()
+ ']',
e);
}
Map<String, IgniteConfiguration> cfgMap;
try {
cfgMap = springCtx.getBeansOfType(IgniteConfiguration.class);
} catch (BeansException e) {
throw new Exception(
"Failed to instantiate bean [type="
+ IgniteConfiguration.class
+ ", err="
+ e.getMessage()
+ ']',
e);
}
if (cfgMap == null || cfgMap.isEmpty())
throw new Exception("Failed to find ignite configuration in: " + url);
return cfgMap.values().iterator().next();
}
/**
* @param cls Component class.
* @param <T> Component type.
* @return Component class instance or {@code null} if no one plugin override this component.
*/
public <T> T createComponent(Class<T> cls) {
for (PluginProvider plugin : plugins.values()) {
PluginContext ctx = pluginContextForProvider(plugin);
T comp = (T) plugin.createComponent(ctx, cls);
if (comp != null) return comp;
}
return null;
}
/** Print plugins information. */
private void ackPluginsInfo() {
U.quietAndInfo(log, "Configured plugins:");
if (plugins.isEmpty()) {
U.quietAndInfo(log, " ^-- None");
U.quietAndInfo(log, "");
} else {
for (PluginProvider plugin : plugins.values()) {
U.quietAndInfo(log, " ^-- " + plugin.name() + " " + plugin.version());
U.quietAndInfo(log, " ^-- " + plugin.copyright());
U.quietAndInfo(log, "");
}
}
}
/** @return All plugin providers. */
public Collection<PluginProvider> allProviders() {
return plugins.values();
}