Removing JavaPoet class usages where it is not needed

processor/src/main/java/org/javahelpers/simple/builders/processor/analysis/JavaLangMapper.java

@@ -43,6 +43,7 @@
 import javax.lang.model.type.TypeMirror;
 import javax.lang.model.type.TypeVariable;
 import javax.lang.model.util.SimpleTypeVisitor14;
+import org.javahelpers.simple.builders.core.enums.AccessModifier;
 import org.javahelpers.simple.builders.processor.model.annotation.AnnotationDto;
 import org.javahelpers.simple.builders.processor.model.method.MethodParameterDto;
 import org.javahelpers.simple.builders.processor.model.type.GenericParameterDto;
@@ -80,6 +81,23 @@ public static Modifier mapRelevantModifier(Set<Modifier> modifier) {
     return DEFAULT;
   }
 
+  /**
+   * Maps an AccessModifier enum value to a javax.lang.model.element.Modifier.
+   *
+   * @param accessModifier the access modifier to map
+   * @return the corresponding Modifier, or null for package-private
+   */
+  public static Modifier mapAccessModifier(AccessModifier accessModifier) {
+    if (accessModifier == null) {
+      return null;
+    }
+    return switch (accessModifier) {
+      case PUBLIC, DEFAULT -> Modifier.PUBLIC;
+      case PRIVATE -> Modifier.PRIVATE;
+      case PACKAGE_PRIVATE -> null; // Package-private has no explicit modifier
+    };
+  }
+
   /**
    * Mapping a Java-Class to a TypeName. This method does not expact sealed or annonymous classes.
    *

processor/src/main/java/org/javahelpers/simple/builders/processor/classgen/javapoet/JavaCodeGenerator.java

@@ -46,6 +46,7 @@
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.javahelpers.simple.builders.core.util.TrackedValue;
+import org.javahelpers.simple.builders.processor.analysis.JavaLangMapper;
 import org.javahelpers.simple.builders.processor.exceptions.BuilderException;
 import org.javahelpers.simple.builders.processor.model.annotation.AnnotationDto;
 import org.javahelpers.simple.builders.processor.model.annotation.InterfaceName;
@@ -79,7 +80,7 @@ public JavaCodeGenerator(ProcessingEnvironment processingEnv, ProcessingLogger l
   }
 
   /**
-   * Generating source code file for builder using Javapoet.
+   * Generates a builder class from the given builder definition.
    *
    * @param builderDef dto of all information to create the builder
    * @throws BuilderException if there is an error in source code generation
@@ -120,7 +121,8 @@ private void addClassMetadata(TypeSpec.Builder classBuilder, BuilderDefinitionDt
     }
 
     // Set builder class access level
-    Modifier builderAccessModifier = map2Modifier(builderDef.getConfiguration().getBuilderAccess());
+    Modifier builderAccessModifier =
+        JavaLangMapper.mapAccessModifier(builderDef.getConfiguration().getBuilderAccess());
     if (builderAccessModifier != null) {
       classBuilder.addModifiers(builderAccessModifier);
     }
@@ -402,7 +404,8 @@ private void generateConstructors(
       TypeSpec.Builder classBuilder, BuilderDefinitionDto builderDef) {
     // Get access modifiers from configuration
     Modifier constructorAccessModifier =
-        map2Modifier(builderDef.getConfiguration().getBuilderConstructorAccess());
+        JavaLangMapper.mapAccessModifier(
+            builderDef.getConfiguration().getBuilderConstructorAccess());
     ClassName dtoBaseClass = map2ClassName(builderDef.getBuildingTargetTypeName());
 
     // Generate empty constructor

processor/src/main/java/org/javahelpers/simple/builders/processor/classgen/javapoet/JavapoetMapper.java

@@ -37,7 +37,6 @@
 import java.util.stream.Collectors;
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.lang3.StringUtils;
-import org.javahelpers.simple.builders.core.enums.AccessModifier;
 import org.javahelpers.simple.builders.processor.classgen.javapoet.exceptions.JavapoetMapperException;
 import org.javahelpers.simple.builders.processor.model.annotation.AnnotationDto;
 import org.javahelpers.simple.builders.processor.model.annotation.InterfaceName;
@@ -243,20 +242,6 @@ public static List<AnnotationSpec> map2AnnotationSpecs(List<AnnotationDto> annot
     return annotations.stream().map(JavapoetMapper::map2AnnotationSpec).toList();
   }
 
-  /**
-   * Maps an AccessModifier enum value to a javax.lang.model.element.Modifier.
-   *
-   * @param accessModifier the access modifier to map
-   * @return the corresponding Modifier
-   */
-  public static javax.lang.model.element.Modifier map2Modifier(AccessModifier accessModifier) {
-    return switch (accessModifier) {
-      case PUBLIC, DEFAULT -> javax.lang.model.element.Modifier.PUBLIC;
-      case PRIVATE -> javax.lang.model.element.Modifier.PRIVATE;
-      case PACKAGE_PRIVATE -> null; // Package-private has no explicit modifier
-    };
-  }
-
   /**
    * Maps an InterfaceName to a JavaPoet TypeName.
    *

processor/src/main/java/org/javahelpers/simple/builders/processor/generators/builder/ClassJavaDocEnhancer.java

@@ -24,8 +24,6 @@
 
 package org.javahelpers.simple.builders.processor.generators.builder;
 
-import com.palantir.javapoet.ClassName;
-import com.palantir.javapoet.CodeBlock;
 import org.javahelpers.simple.builders.processor.generators.BuilderEnhancer;
 import org.javahelpers.simple.builders.processor.model.core.BuilderDefinitionDto;
 import org.javahelpers.simple.builders.processor.model.type.TypeName;
@@ -87,31 +85,28 @@ public boolean appliesTo(
 
   @Override
   public void enhanceBuilder(BuilderDefinitionDto builderDto, ProcessingContext context) {
-    ClassName dtoClass =
-        ClassName.get(
-            builderDto.getBuildingTargetTypeName().getPackageName(),
-            builderDto.getBuildingTargetTypeName().getClassName());
-
-    CodeBlock javadoc = createClassJavadoc(dtoClass);
-    builderDto.setClassJavadoc(javadoc.toString());
+    TypeName targetType = builderDto.getBuildingTargetTypeName();
+    String javadoc = createClassJavadoc(targetType);
+    builderDto.setClassJavadoc(javadoc);
   }
 
   /**
    * Creates comprehensive JavaDoc for the builder class.
    *
-   * @param dtoClass the target DTO class
-   * @return CodeBlock containing the JavaDoc content
+   * @param targetType the target DTO type
+   * @return String containing the JavaDoc content
    */
-  private CodeBlock createClassJavadoc(ClassName dtoClass) {
-    return CodeBlock.of(
+  private String createClassJavadoc(TypeName targetType) {
+    String qualifiedClassName = targetType.getFullQualifiedName();
+    return String.format(
         """
-        Builder for {@code $1T}.
+        Builder for {@code %s}.
         <p>
-        This builder provides a fluent API for creating instances of $1T with
+        This builder provides a fluent API for creating instances of %s with
         method chaining and validation. Use the static {@code create()} method
         to obtain a new builder instance, configure the desired properties using
         the setter methods, and then call {@code build()} to create the final DTO.
         """,
-        dtoClass);
+        qualifiedClassName, qualifiedClassName);
   }
 }

processor/src/main/java/org/javahelpers/simple/builders/processor/generators/util/MethodGeneratorUtil.java

@@ -30,7 +30,6 @@
 import javax.lang.model.element.Modifier;
 import org.apache.commons.lang3.StringUtils;
 import org.javahelpers.simple.builders.processor.analysis.JavaLangMapper;
-import org.javahelpers.simple.builders.processor.classgen.javapoet.JavapoetMapper;
 import org.javahelpers.simple.builders.processor.model.core.FieldDto;
 import org.javahelpers.simple.builders.processor.model.method.MethodDto;
 import org.javahelpers.simple.builders.processor.model.method.MethodParameterDto;
@@ -96,7 +95,7 @@ public static String generateBuilderMethodName(String fieldName, ProcessingConte
    * @return the Modifier for method access, or null for package-private
    */
   public static Modifier getMethodAccessModifier(ProcessingContext context) {
-    return JavapoetMapper.map2Modifier(context.getConfiguration().getMethodAccess());
+    return JavaLangMapper.mapAccessModifier(context.getConfiguration().getMethodAccess());
   }
 
   /**