protected void generateDeriveKeyMethod(SourcePrinter srcWriter) {
srcWriter.println(
"protected " + getKeyTypeName() + " getKey(" + getTargetObjectClassName() + " object){");
srcWriter.print("boolean hasKey = ");
boolean first = true;
for (String k : keyPath) {
if (!first) {
srcWriter.print(" || ");
}
String getterMethod = JClassUtils.getGetterMethod(k, targetObjectType);
srcWriter.print("object." + getterMethod + "() != null");
first = false;
}
srcWriter.println(";");
srcWriter.println("if (hasKey){");
srcWriter.print(getKeyTypeName() + " key");
if (hasCompositeKey()) {
srcWriter.println(" = new Object[" + keyPath.length + "];");
int i = 0;
for (String k : keyPath) {
String getterMethod = JClassUtils.getGetterMethod(k, targetObjectType);
srcWriter.print("key [" + i + "] = object." + getterMethod + "();");
i++;
}
} else {
srcWriter.println(
" = object." + JClassUtils.getGetterMethod(keyPath[0], targetObjectType) + "();");
}
srcWriter.println("return key;");
if (autoIncrement) {
if (!getKeyTypeName().equals("Integer")) {
throw new CruxGeneratorException("Auto increment keys can only be used on integer keys");
}
srcWriter.println("} else {");
srcWriter.println("return null;");
} else {
srcWriter.println("} else {");
srcWriter.println("reportError(db.messages.objectStoreDeriveKeyError(name));");
srcWriter.println("return null;");
}
srcWriter.println("}");
srcWriter.println("}");
srcWriter.println();
}
/**
* @param dataClass
* @return
*/
private String[] extractIdentifiers(JClassType dataClass) {
List<String> ids = new ArrayList<String>();
JField[] fields = JClassUtils.getDeclaredFields(dataClass);
for (JField field : fields) {
if (field.getAnnotation(DataObjectIdentifier.class) != null) {
if (field.isPublic()) {
ids.add(field.getName());
} else {
ids.add(JClassUtils.getGetterMethod(field.getName(), dataClass) + "()");
}
}
}
return ids.toArray(new String[ids.size()]);
}
