#29, avoid getClass() method on model classes

(cherry picked from commit ebe7411)

Author: hauner

openapi-processor-core/src/main/kotlin/io/openapiprocessor/core/writer/java/DataTypeWriterPojo.kt

@@ -219,7 +219,7 @@ class DataTypeWriterPojo(
         result += ifDeprecated(propDataType)
 
         result += """
-            |    public ${propDataType.getTypeName()} get${propertyName.capitalizeFirstChar()}() {
+            |    public ${propDataType.getTypeName()} get${toAccessor(propertyName.capitalizeFirstChar())}() {
             |        return ${toIdentifier(propertyName)};
             |    }
             |
@@ -236,7 +236,7 @@ class DataTypeWriterPojo(
         val property = toIdentifier(propertyName)
 
         result += """
-            |    public void set${propertyName.capitalizeFirstChar()}(${propDataType.getTypeName()} ${property}) {
+            |    public void set${toAccessor(propertyName.capitalizeFirstChar())}(${propDataType.getTypeName()} ${property}) {
             |        this.${property} = ${property};
             |    }
             |

openapi-processor-core/src/main/kotlin/io/openapiprocessor/core/writer/java/Identifier.kt

@@ -51,6 +51,20 @@ fun toIdentifier(src: String): String {
     return identifier
 }
 
+/**
+ * convert an invalid property accessor to a valid property accessor by adding an "A" prefix.
+ * This is used to avoid generating a getClass() method that conflicts with Object::getClass().
+ *
+ * @param src the source property name without get/set prefix
+ * @return a valid accessor name  without get/set prefix
+ */
+fun toAccessor(src: String): String {
+    return when (src) {
+        "Class" -> "AClass"
+        else -> src
+    }
+}
+
 /**
  * converts a source string to a valid (camel case) java *class* identifier. One way, ie it is
  * not reversible.
@@ -82,7 +96,6 @@ fun toClass(src: String): String {
  * All words are converted to uppercase and joined by an underscore.
  *
  * @param src the source "string"
- *
  * @return a valid upper case enum java identifier
  */
 fun toEnum(src: String): String {

openapi-processor-core/src/testInt/resources/tests/keyword-identifier/generated/model/Class.java

@@ -9,11 +9,11 @@ public class Class {
     @JsonProperty("class")
     private String aClass;
 
-    public String getClass() {
+    public String getAClass() {
         return aClass;
     }
 
-    public void setClass(String aClass) {
+    public void setAClass(String aClass) {
         this.aClass = aClass;
     }