#919 - io.ebean package initial

src/main/java/io/ebeaninternal/server/util/Md5.java

@@ -0,0 +1,33 @@
+package io.ebeaninternal.server.util;
+
+import java.security.MessageDigest;
+
+public class Md5 {
+
+  /**
+   * Return the MD5 hash of the underlying sql.
+   */
+  public static String hash(String content) {
+
+    try {
+      MessageDigest md = MessageDigest.getInstance("MD5");
+      byte[] digest = md.digest(content.getBytes("UTF-8"));
+      return digestToHex(digest);
+    } catch (Exception e) {
+      throw new RuntimeException("MD5 hashing failed", e);
+    }
+  }
+
+  /**
+   * Convert the digest into a hex value.
+   */
+  private static String digestToHex(byte[] digest) {
+
+    StringBuilder sb = new StringBuilder();
+    for (byte aDigest : digest) {
+      sb.append(Integer.toString((aDigest & 0xff) + 0x100, 16).substring(1));
+    }
+    return sb.toString();
+  }
+
+}