[Validation] determine whether or not to allow empty tags based on a system property passed in to the codec generator

Author: writeoncereadmany

artio-codecs/src/main/java/uk/co/real_logic/artio/dictionary/generation/CodecConfiguration.java

@@ -54,6 +54,7 @@ public final class CodecConfiguration
     public static final String WRAP_EMPTY_BUFFER = "fix.codecs.wrap_empty_buffer";
     public static final String PARENT_PACKAGE_PROPERTY = "fix.codecs.parent_package";
     public static final String FLYWEIGHTS_ENABLED_PROPERTY = "fix.codecs.flyweight";
+    public static final String ALLOW_EMPTY_TAGS_PROPERTY = "fix.codecs.allow.empty.fix.tags";
     public static final String REJECT_UNKNOWN_ENUM_VALUE_PROPERTY = "reject.unknown.enum.value";
     public static final String FIX_TAGS_IN_JAVADOC = "fix.codecs.tags_in_javadoc";
 
@@ -63,6 +64,7 @@ public final class CodecConfiguration
     private String parentPackage = System.getProperty(PARENT_PACKAGE_PROPERTY, DEFAULT_PARENT_PACKAGE);
     private boolean flyweightsEnabled = Boolean.getBoolean(FLYWEIGHTS_ENABLED_PROPERTY);
     private boolean wrapEmptyBuffer = Boolean.getBoolean(WRAP_EMPTY_BUFFER);
+    private boolean allowEmptyTags = Boolean.getBoolean(ALLOW_EMPTY_TAGS_PROPERTY);
     private boolean fixTagsInJavadoc = Boolean.parseBoolean(System.getProperty(
         FIX_TAGS_IN_JAVADOC, DEFAULT_FIX_TAGS_IN_JAVADOC));
     private SharedCodecConfiguration sharedCodecConfiguration;
@@ -114,6 +116,12 @@ public CodecConfiguration flyweightsEnabled(final boolean flyweightsEnabled)
         return this;
     }
 
+    public CodecConfiguration allowEmptyTags(final boolean allowEmptyTags)
+    {
+        this.allowEmptyTags = allowEmptyTags;
+        return this;
+    }
+
     /**
      * Suppresses checks for the presence of optional string fields (i.e. no exception is
      * thrown when unset, instead the AsciiSequenceView wraps an empty buffer).
@@ -248,6 +256,11 @@ boolean wrapEmptyBuffer()
         return wrapEmptyBuffer;
     }
 
+    boolean allowEmptyTags()
+    {
+        return allowEmptyTags;
+    }
+
     String codecRejectUnknownEnumValueEnabled()
     {
         return codecRejectUnknownEnumValueEnabled;

artio-codecs/src/main/java/uk/co/real_logic/artio/dictionary/generation/CodecGenerator.java

@@ -41,6 +41,7 @@ public static void generate(final CodecConfiguration configuration) throws Excep
 
         final String outputPath = configuration.outputPath();
         final String codecRejectUnknownEnumValueEnabled = configuration.codecRejectUnknownEnumValueEnabled();
+        final String codecRejectEmptyTagsEnabled = configuration.codecRejectUnknownEnumValueEnabled();
 
         final boolean hasSharedCodecs = configuration.sharedCodecConfiguration() != null;
         if (hasSharedCodecs)
@@ -182,7 +183,7 @@ private static void generateDictionary(
             RejectUnknownEnumValue.class,
             false,
             configuration.wrapEmptyBuffer(),
-            false,
+            configuration.allowEmptyTags(),
             codecRejectUnknownEnumValueEnabled,
             configuration.fixTagsInJavadoc()).generate();
 
@@ -205,7 +206,7 @@ private static void generateDictionary(
                 RejectUnknownEnumValue.class,
                 true,
                 configuration.wrapEmptyBuffer(),
-                false,
+                configuration.allowEmptyTags(),
                 codecRejectUnknownEnumValueEnabled,
                 configuration.fixTagsInJavadoc()).generate();
         }

artio-codecs/src/main/java/uk/co/real_logic/artio/dictionary/generation/Generator.java

@@ -56,7 +56,6 @@ public abstract class Generator
     public static final String BODY_LENGTH = "BodyLength";
 
     public static final String CODEC_VALIDATION_ENABLED = "CODEC_VALIDATION_ENABLED";
-    public static final String CODEC_REJECT_EMPTY_TAG_ENABLED = "CODEC_REJECT_EMPTY_TAG_ENABLED";
     public static final String CODEC_REJECT_UNKNOWN_FIELD_ENABLED = "CODEC_REJECT_UNKNOWN_FIELD_ENABLED";
     public static final String RUNTIME_REJECT_UNKNOWN_ENUM_VALUE_PROPERTY = "CODEC_REJECT_UNKNOWN_ENUM_VALUE_ENABLED";
     public static final Pattern NEWLINE = Pattern.compile("^", MULTILINE);