[Java] Generate final classes to improve performance.

Author: mjpt777

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/java/JavaGenerator.java

@@ -570,7 +570,7 @@ private void generateGroupDecoderClassDeclaration(
         final String className = formatClassName(groupName);
 
         new Formatter(sb).format("\n" +
-            indent + "public static class %1$s\n" +
+            indent + "public static final class %1$s\n" +
             indent + "    implements Iterable<%1$s>, java.util.Iterator<%1$s>\n" +
             indent + "{\n" +
             indent + "    public static final int HEADER_SIZE = %2$d;\n" +
@@ -622,7 +622,7 @@ private void generateGroupEncoderClassDeclaration(
         final String className = encoderName(groupName);
 
         new Formatter(sb).format("\n" +
-            indent + "public static class %1$s\n" +
+            indent + "public static final class %1$s\n" +
             indent + "{\n" +
             indent + "    public static final int HEADER_SIZE = %2$d;\n" +
             indent + "    private final %3$s parentMessage;\n" +
@@ -1659,7 +1659,7 @@ private static CharSequence generateDeclaration(
 
         generateTypeJavadoc(sb, BASE_INDENT, typeToken);
         sb.append("@SuppressWarnings(\"all\")\n")
-            .append("public class ").append(className).append(implementsString).append('\n')
+            .append("public final class ").append(className).append(implementsString).append('\n')
             .append("{\n");
 
         return sb;

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/ByteOrderCodec.java

@@ -23,11 +23,22 @@ public enum ByteOrderCodec
         this.value = value;
     }
 
+    /**
+     * The raw encoded value in the Java type representation.
+     *
+     * @return the raw value encoded.
+     */
     public short value()
     {
         return value;
     }
 
+    /**
+     * Lookup the enum value representing the value.
+     *
+     * @param value encoded to be looked up.
+     * @return the enum value representing the value.
+     */
     public static ByteOrderCodec get(final short value)
     {
         switch (value)

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/FrameCodecDecoder.java

@@ -9,7 +9,7 @@
  * Frame Header for start of encoding IR
  */
 @SuppressWarnings("all")
-public class FrameCodecDecoder
+public final class FrameCodecDecoder
 {
     public static final int BLOCK_LENGTH = 12;
     public static final int TEMPLATE_ID = 1;

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/FrameCodecEncoder.java

@@ -9,7 +9,7 @@
  * Frame Header for start of encoding IR
  */
 @SuppressWarnings("all")
-public class FrameCodecEncoder
+public final class FrameCodecEncoder
 {
     public static final int BLOCK_LENGTH = 12;
     public static final int TEMPLATE_ID = 1;

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/MessageHeaderDecoder.java

@@ -8,7 +8,7 @@
  * Message identifiers and length of message root
  */
 @SuppressWarnings("all")
-public class MessageHeaderDecoder
+public final class MessageHeaderDecoder
 {
     public static final int SCHEMA_ID = 1;
     public static final int SCHEMA_VERSION = 0;

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/MessageHeaderEncoder.java

@@ -8,7 +8,7 @@
  * Message identifiers and length of message root
  */
 @SuppressWarnings("all")
-public class MessageHeaderEncoder
+public final class MessageHeaderEncoder
 {
     public static final int SCHEMA_ID = 1;
     public static final int SCHEMA_VERSION = 0;

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/PresenceCodec.java

@@ -25,11 +25,22 @@ public enum PresenceCodec
         this.value = value;
     }
 
+    /**
+     * The raw encoded value in the Java type representation.
+     *
+     * @return the raw value encoded.
+     */
     public short value()
     {
         return value;
     }
 
+    /**
+     * Lookup the enum value representing the value.
+     *
+     * @param value encoded to be looked up.
+     * @return the enum value representing the value.
+     */
     public static PresenceCodec get(final short value)
     {
         switch (value)

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/PrimitiveTypeCodec.java

@@ -43,11 +43,22 @@ public enum PrimitiveTypeCodec
         this.value = value;
     }
 
+    /**
+     * The raw encoded value in the Java type representation.
+     *
+     * @return the raw value encoded.
+     */
     public short value()
     {
         return value;
     }
 
+    /**
+     * Lookup the enum value representing the value.
+     *
+     * @param value encoded to be looked up.
+     * @return the enum value representing the value.
+     */
     public static PrimitiveTypeCodec get(final short value)
     {
         switch (value)

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/SignalCodec.java

@@ -53,11 +53,22 @@ public enum SignalCodec
         this.value = value;
     }
 
+    /**
+     * The raw encoded value in the Java type representation.
+     *
+     * @return the raw value encoded.
+     */
     public short value()
     {
         return value;
     }
 
+    /**
+     * Lookup the enum value representing the value.
+     *
+     * @param value encoded to be looked up.
+     * @return the enum value representing the value.
+     */
     public static SignalCodec get(final short value)
     {
         switch (value)

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/TokenCodecDecoder.java

@@ -9,7 +9,7 @@
  * Codec for an IR Token
  */
 @SuppressWarnings("all")
-public class TokenCodecDecoder
+public final class TokenCodecDecoder
 {
     public static final int BLOCK_LENGTH = 28;
     public static final int TEMPLATE_ID = 2;