fix for issue #48

src/main/java/com/fasterxml/jackson/module/afterburner/ser/OptimizedBeanPropertyWriter.java

@@ -38,7 +38,8 @@ protected OptimizedBeanPropertyWriter(BeanPropertyWriter src,
     {
         super(src);
         this.fallbackWriter = unwrapFallbackWriter(src);
-        _serializer = ser; // from base class
+        // either use the passed on serializer or the original one
+        _serializer = (ser != null) ? ser : src.getSerializer();
         _propertyAccessor = propertyAccessor;
         _propertyIndex = propertyIndex;
         _fastName = src.getSerializedName();

src/test/java/com/fasterxml/jackson/module/afterburner/bug48/TestJsonSerializeAnnotationBug.java

@@ -0,0 +1,22 @@
+package com.fasterxml.jackson.module.afterburner.bug48;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.module.afterburner.AfterburnerModule;
+import com.fasterxml.jackson.module.afterburner.AfterburnerTestBase;
+
+import java.math.BigDecimal;
+
+/**
+ * @author Joost van de Wijgerd
+ */
+public class TestJsonSerializeAnnotationBug extends AfterburnerTestBase {
+    public void testAfterburnerModule() throws JsonProcessingException {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new AfterburnerModule());
+
+        String value = objectMapper.writeValueAsString(new TestObjectWithJsonSerialize(new BigDecimal("870.04")));
+
+
+    }
+}

src/test/java/com/fasterxml/jackson/module/afterburner/bug48/TestObjectWithJsonSerialize.java

@@ -0,0 +1,26 @@
+package com.fasterxml.jackson.module.afterburner.bug48;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
+
+import java.math.BigDecimal;
+
+/**
+ * @author Joost van de Wijgerd
+ */
+public final class TestObjectWithJsonSerialize {
+    @JsonSerialize(using = ToStringSerializer.class)
+    private final BigDecimal amount;
+
+    @JsonCreator
+    public TestObjectWithJsonSerialize(@JsonProperty("amount") BigDecimal amount) {
+        this.amount = amount;
+    }
+
+    @JsonSerialize(using = ToStringSerializer.class) @JsonProperty("amount")
+    public BigDecimal getAmount() {
+        return amount;
+    }
+}