From 4f3f287923f5819cadae80817d0074f2c80d85a9 Mon Sep 17 00:00:00 2001
From: Daniel Strmecki <daniel.strmecki@gmail.com>
Date: Sun, 11 Jul 2021 15:18:10 +0200
Subject: [PATCH] Feature/bael 4911 tiered compilation (#10958)

* BASE-4911: Tiered Compilation Initial Commit

* BASE-4911: Use Generics
---
 core-java-modules/core-java-lang-4/pom.xml    | 10 +++++++++
 .../baeldung/tieredcompilation/Article.java   | 21 +++++++++++++++++++
 .../baeldung/tieredcompilation/Formatter.java |  7 +++++++
 .../tieredcompilation/JsonFormatter.java      | 15 +++++++++++++
 .../tieredcompilation/TieredCompilation.java  | 17 +++++++++++++++
 .../tieredcompilation/XmlFormatter.java       | 15 +++++++++++++
 6 files changed, 85 insertions(+)
 create mode 100644 core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Article.java
 create mode 100644 core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Formatter.java
 create mode 100644 core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/JsonFormatter.java
 create mode 100644 core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/TieredCompilation.java
 create mode 100644 core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/XmlFormatter.java

diff --git a/core-java-modules/core-java-lang-4/pom.xml b/core-java-modules/core-java-lang-4/pom.xml
index 4e692ffa55..46ad335568 100644
--- a/core-java-modules/core-java-lang-4/pom.xml
+++ b/core-java-modules/core-java-lang-4/pom.xml
@@ -21,6 +21,16 @@
             <artifactId>jmh-core</artifactId>
             <version>${jmh-core.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.dataformat</groupId>
+            <artifactId>jackson-dataformat-xml</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-generator-annprocess</artifactId>
diff --git a/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Article.java b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Article.java
new file mode 100644
index 0000000000..2eca40f055
--- /dev/null
+++ b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Article.java
@@ -0,0 +1,21 @@
+package com.baeldung.tieredcompilation;
+
+public class Article {
+
+    private String name;
+    private String author;
+
+    public Article(String name, String author) {
+        this.name = name;
+        this.author = author;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+}
diff --git a/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Formatter.java b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Formatter.java
new file mode 100644
index 0000000000..ee5d74d5fe
--- /dev/null
+++ b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/Formatter.java
@@ -0,0 +1,7 @@
+package com.baeldung.tieredcompilation;
+
+public interface Formatter {
+
+    <T> String format(T object) throws Exception;
+
+}
diff --git a/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/JsonFormatter.java b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/JsonFormatter.java
new file mode 100644
index 0000000000..9951b477da
--- /dev/null
+++ b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/JsonFormatter.java
@@ -0,0 +1,15 @@
+package com.baeldung.tieredcompilation;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.json.JsonMapper;
+
+public class JsonFormatter implements Formatter {
+
+    private static final JsonMapper mapper = new JsonMapper();
+
+    @Override
+    public <T> String format(T object) throws JsonProcessingException {
+        return mapper.writeValueAsString(object);
+    }
+
+}
diff --git a/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/TieredCompilation.java b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/TieredCompilation.java
new file mode 100644
index 0000000000..ea7178051e
--- /dev/null
+++ b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/TieredCompilation.java
@@ -0,0 +1,17 @@
+package com.baeldung.tieredcompilation;
+
+public class TieredCompilation {
+
+    public static void main(String[] args) throws Exception {
+        for (int i = 0; i < 1_000_000; i++) {
+            Formatter formatter;
+            if (i < 500_000) {
+                formatter = new JsonFormatter();
+            } else {
+                formatter = new XmlFormatter();
+            }
+            formatter.format(new Article("Tiered Compilation in JVM", "Baeldung"));
+        }
+    }
+
+}
diff --git a/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/XmlFormatter.java b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/XmlFormatter.java
new file mode 100644
index 0000000000..8b9823cd88
--- /dev/null
+++ b/core-java-modules/core-java-lang-4/src/main/java/com/baeldung/tieredcompilation/XmlFormatter.java
@@ -0,0 +1,15 @@
+package com.baeldung.tieredcompilation;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.dataformat.xml.XmlMapper;
+
+public class XmlFormatter implements Formatter {
+
+    private static final XmlMapper mapper = new XmlMapper();
+
+    @Override
+    public <T> String format(T object) throws JsonProcessingException {
+        return mapper.writeValueAsString(object);
+    }
+
+}