Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

libraries-data/src/main/java/com/baeldung/jcache/SimpleCacheEntryListener.java

@@ -0,0 +1,34 @@
+package com.baeldung.jcache;
+
+import java.io.Serializable;
+
+import javax.cache.event.CacheEntryCreatedListener;
+import javax.cache.event.CacheEntryEvent;
+import javax.cache.event.CacheEntryListenerException;
+import javax.cache.event.CacheEntryUpdatedListener;
+
+public class SimpleCacheEntryListener implements CacheEntryCreatedListener<String, String>, CacheEntryUpdatedListener<String, String>, Serializable {
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = -712657810462878763L;
+    private boolean updated;
+    private boolean created;
+
+    public boolean getUpdated() {
+        return this.updated;
+    }
+
+    public boolean getCreated() {
+        return this.created;
+    }
+
+    public void onUpdated(Iterable<CacheEntryEvent<? extends String, ? extends String>> events) throws CacheEntryListenerException {
+        this.updated = true;
+    }
+
+    public void onCreated(Iterable<CacheEntryEvent<? extends String, ? extends String>> events) throws CacheEntryListenerException {
+        this.created = true;
+    }
+}

libraries-data/src/main/java/com/baeldung/jcache/SimpleCacheLoader.java

@@ -0,0 +1,24 @@
+package com.baeldung.jcache;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.cache.integration.CacheLoader;
+import javax.cache.integration.CacheLoaderException;
+
+public class SimpleCacheLoader implements CacheLoader<Integer, String> {
+
+    @Override
+    public String load(Integer key) throws CacheLoaderException {
+        return "fromCache" + key;
+    }
+
+    @Override
+    public Map<Integer, String> loadAll(Iterable<? extends Integer> keys) throws CacheLoaderException {
+        Map<Integer, String> data = new HashMap<>();
+        for (int key : keys) {
+            data.put(key, load(key));
+        }
+        return data;
+    }
+}

libraries-data/src/main/java/com/baeldung/jcache/SimpleEntryProcessor.java

@@ -0,0 +1,25 @@
+package com.baeldung.jcache;
+
+import java.io.Serializable;
+
+import javax.cache.processor.EntryProcessor;
+import javax.cache.processor.EntryProcessorException;
+import javax.cache.processor.MutableEntry;
+
+public class SimpleEntryProcessor implements EntryProcessor<String, String, String>, Serializable {
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = -5616476363722945132L;
+
+    public String process(MutableEntry<String, String> entry, Object... args) throws EntryProcessorException {
+
+        if (entry.exists()) {
+            String current = entry.getValue();
+            entry.setValue(current + " - modified");
+            return current;
+        }
+        return null;
+    }
+}