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‎.gitignore‎

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# Intellij
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.idea/
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*.iml
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*.iws
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*.ipr
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# Mac
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.DS_Store
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# Package Files #
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*.jar
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*.war
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*.ear
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# Gradle
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.gradle
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# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored).
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# Add this 'after' *.jar ignore
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!gradle-wrapper.jar
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# Binaries
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build
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target
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out
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classes
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reports
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bin
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*.class
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#Eclipse
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.classpath
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.project
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.settings
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# Vagrant, Ansible and Docker
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.vagrant
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.docker
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*.retry

‎jcs_swap/JsonDocCache.data‎

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‎jcs_swap/JsonDocCache.key‎

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‎jcs_swap/default.data‎

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‎jcs_swap/default.key‎

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‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.delta</groupId>
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<artifactId>core</artifactId>
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<version>1.0-SNAPSHOT</version>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<dependencies>
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<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-jcs-core -->
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-jcs-core</artifactId>
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<version>2.0-beta-2</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
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<dependency>
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<groupId>commons-logging</groupId>
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<artifactId>commons-logging</artifactId>
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<version>1.2</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.16.8</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/net.sf.ehcache/ehcache -->
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<dependency>
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<groupId>net.sf.ehcache</groupId>
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<artifactId>ehcache</artifactId>
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<version>2.10.3</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.ehcache/ehcache -->
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<dependency>
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<groupId>org.ehcache</groupId>
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<artifactId>ehcache</artifactId>
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<version>3.2.0</version>
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</dependency>
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<!--loggin-->
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<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>1.7.22</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-simple</artifactId>
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<version>1.7.22</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>4.3.4.RELEASE</version>
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</dependency>
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</dependencies>
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</project>

‎src/main/java/com/eprogrammerz/examples/cache/example/cloning/HashMapClone.java‎

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package com.eprogrammerz.examples.cache.example.cloning;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Created by 542596 on 12/21/2016.
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*/
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public class HashMapClone {
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public static void main(String[] args) {
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HashMap<String, Object> map = new HashMap<>();
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map.put("key1", "value1");
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map.put("key2", "value2");
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map.put("key3", "value3");
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HashMap<String, Object> clonedMap = (HashMap<String, Object>) map.clone();
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System.out.println(map);
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System.out.println(clonedMap);
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System.out.println("Changing value...");
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map.remove("key1");
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map = clonedMap;
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System.out.println(map);
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System.out.println(clonedMap);
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Date date = new Date(1482421944086L);
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System.out.println(date);
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}
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}

‎src/main/java/com/eprogrammerz/examples/cache/example/ehcache/Application.java‎

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package com.eprogrammerz.examples.cache.example.ehcache;
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/**
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* Created by 542596 on 12/12/2016.
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*/
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public class Application {
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public static void main(String[] args) {
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JsonObjCacheManager manager = new JsonObjCacheManager();
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// manager.putInCache("key1", "Delta Airlines");
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// String storedValue = (String) manager.retrieveFromCache("key1");
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// System.out.println(storedValue);
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final City city1 = new City("ATL","USA",12100);
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final City city2 = new City("FL","USA",12000);
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/* manager.putInCache(city1.getName(), new HashMap(){
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{
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put("city1", city1);
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}
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});
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manager.putInCache(city2.getName(), new HashMap(){
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{
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put("city2", city2);
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}
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});*/
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manager.putInCache(city1.getName(), city1);
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manager.putInCache(city2.getName(), city2);
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System.out.println(manager.getKeys());
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for(String key: manager.getKeys()){
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System.out.println(key + ": "+ manager.retrieveFromCache(key));
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}
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// HashMap fromCache1 = (HashMap) manager.retrieveFromCache(city1.getName());
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// HashMap fromCache = (HashMap) fromCache1.clone();
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City cityFromCache = (City) manager.retrieveFromCache(city1.getName());
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cityFromCache.setName("KTM");
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cityFromCache.setCountry("NPL");
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System.out.println(manager.getKeys());
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for(String key: manager.getKeys()){
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System.out.println(key + ": "+ manager.retrieveFromCache(key));
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}
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}
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}

‎src/main/java/com/eprogrammerz/examples/cache/example/ehcache/City.java‎

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package com.eprogrammerz.examples.cache.example.ehcache;
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import lombok.AllArgsConstructor;
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import lombok.Getter;
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import lombok.Setter;
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import lombok.ToString;
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import java.io.Serializable;
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/**
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* Created by 542596 on 12/9/2016.
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*/
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@Getter
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@Setter
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@ToString
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@AllArgsConstructor
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public class City implements Serializable {
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public String name;
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public String country;
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public int population;
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}

‎src/main/java/com/eprogrammerz/examples/cache/example/ehcache/JsonObjCacheManager.java‎

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package com.eprogrammerz.examples.cache.example.ehcache;
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import net.sf.ehcache.Cache;
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import net.sf.ehcache.CacheException;
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import net.sf.ehcache.CacheManager;
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import net.sf.ehcache.Element;
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import net.sf.ehcache.config.CacheConfiguration;
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import net.sf.ehcache.config.PersistenceConfiguration;
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import net.sf.ehcache.store.MemoryStoreEvictionPolicy;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.List;
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/**
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* Created by 542596 on 12/12/2016.
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*/
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public class JsonObjCacheManager {
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private static final Logger logger = LoggerFactory.getLogger(JsonObjCacheManager.class);
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private CacheManager manager;
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private Cache objectCache;
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public JsonObjCacheManager(){
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manager = CacheManager.create();
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objectCache = manager.getCache("jsonDocCache");
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if( objectCache == null){
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objectCache = new Cache(
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new CacheConfiguration("jsonDocCache", 1000)
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.memoryStoreEvictionPolicy(MemoryStoreEvictionPolicy.LRU)
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.eternal(false)
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.timeToLiveSeconds(60 * 60)
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.timeToIdleSeconds(0)
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.diskExpiryThreadIntervalSeconds(0)
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.persistence(new PersistenceConfiguration().strategy(PersistenceConfiguration.Strategy.LOCALTEMPSWAP)));
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objectCache.disableDynamicFeatures();
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manager.addCache(objectCache);
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}
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}
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public List<String> getKeys() { return objectCache.getKeys();}
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public void clearCache(){
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manager.removeAllCaches();
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}
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public void putInCache(String key, Object value){
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try{
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objectCache.put(new Element(key, value));
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}catch (CacheException e){
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logger.error(String.format( "Problem occurred while putting data into cache: %s", e.getMessage()));
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}
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}
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public Object retrieveFromCache(String key){
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// System.out.println("+++++++++++");
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// System.out.println(objectCache.getKeys());
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try {
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Element element = objectCache.get(key);
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if(element != null)
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return element.getObjectValue();
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}catch (CacheException ce){
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logger.error(String.format("Problem occurred while trying to retrieveSpecific from cache: %s", ce.getMessage()));
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}
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return null;
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}
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}

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