private void generateFieldAccessor()

in activemq-protobuf/src/main/java/org/apache/activemq/protobuf/compiler/JavaGenerator.java [1150:1338]

• 168 lines of code
• 20 McCabe index (conditional complexity)

    private void generateFieldAccessor(FieldDescriptor field) {
        
        String lname = lCamel(field.getName());
        String uname = uCamel(field.getName());
        String type = field.getRule()==FieldDescriptor.REPEATED_RULE ? javaCollectionType(field):javaType(field);
        String typeDefault = javaTypeDefault(field);
        boolean primitive = field.getTypeDescriptor()==null || field.getTypeDescriptor().isEnum();
        boolean repeated = field.getRule()==FieldDescriptor.REPEATED_RULE;

        // Create the fields..
        p("// " + field.getRule() + " " + field.getType() + " " + field.getName() + " = " + field.getTag() + ";");
        
        if( repeated ) {
            p("private java.util.List<" + type + "> f_" + lname + ";");
            p();
            
            // Create the field accessors
            p("public boolean has" + uname + "() {");
            indent();
            if( deferredDecode ) {
            	p("load();");
            }        
            p("return this.f_" + lname + "!=null && !this.f_" + lname + ".isEmpty();");
            unindent();
            p("}");
            p();

            p("public java.util.List<" + type + "> get" + uname + "List() {");
            indent();
            if( deferredDecode ) {
            	p("load();");
            }        
            p("if( this.f_" + lname + " == null ) {");
            indent();
            p("this.f_" + lname + " = new java.util.ArrayList<" + type + ">();");
            unindent();
            p("}");
            p("return this.f_" + lname + ";");
            unindent();
            p("}");
            p();

            p("public T set" + uname + "List(java.util.List<" + type + "> " + lname + ") {");
            indent();
          	p("loadAndClear();");
            p("this.f_" + lname + " = " + lname + ";");
            p("return (T)this;");
            unindent();
            p("}");
            p();
            
            p("public int get" + uname + "Count() {");
            indent();
            if( deferredDecode ) {
            	p("load();");
            }        
            p("if( this.f_" + lname + " == null ) {");
            indent();
            p("return 0;");
            unindent();
            p("}");
            p("return this.f_" + lname + ".size();");
            unindent();
            p("}");
            p();
            
            p("public " + type + " get" + uname + "(int index) {");
            indent();
            if( deferredDecode ) {
            	p("load();");
            }        
            p("if( this.f_" + lname + " == null ) {");
            indent();
            p("return null;");
            unindent();
            p("}");
            p("return this.f_" + lname + ".get(index);");
            unindent();
            p("}");
            p();
                            
            p("public T set" + uname + "(int index, " + type + " value) {");
            indent();
          	p("loadAndClear();");
            p("get" + uname + "List().set(index, value);");
            p("return (T)this;");
            unindent();
            p("}");
            p();
            
            p("public T add" + uname + "(" + type + " value) {");
            indent();
          	p("loadAndClear();");
            p("get" + uname + "List().add(value);");
            p("return (T)this;");
            unindent();
            p("}");
            p();
            
            p("public T addAll" + uname + "(java.lang.Iterable<? extends " + type + "> collection) {");
            indent();
          	p("loadAndClear();");
            p("super.addAll(collection, get" + uname + "List());");
            p("return (T)this;");
            unindent();
            p("}");
            p();

            p("public void clear" + uname + "() {");
            indent();
          	p("loadAndClear();");
            p("this.f_" + lname + " = null;");
            unindent();
            p("}");
            p();

        } else {
            
            p("private " + type + " f_" + lname + " = "+typeDefault+";");
            if (primitive) {
                p("private boolean b_" + lname + ";");
            }
            p();
            
            // Create the field accessors
            p("public boolean has" + uname + "() {");
            indent();
            if( deferredDecode ) {
            	p("load();");
            }        
            if (primitive) {
                p("return this.b_" + lname + ";");
            } else {
                p("return this.f_" + lname + "!=null;");
            }
            unindent();
            p("}");
            p();

            p("public " + type + " get" + uname + "() {");
            indent();
            if( deferredDecode ) {
            	p("load();");
            }        
            if( field.getTypeDescriptor()!=null && !field.getTypeDescriptor().isEnum()) {
                p("if( this.f_" + lname + " == null ) {");
                indent();
                p("this.f_" + lname + " = new " + type + "();");
                unindent();
                p("}");
            }
            p("return this.f_" + lname + ";");
            unindent();
            p("}");
            p();

            p("public T set" + uname + "(" + type + " " + lname + ") {");
            indent();
          	p("loadAndClear();");
            if (primitive) {
                if( auto_clear_optional_fields && field.isOptional() ) {
                    if( field.isStringType() && !"null".equals(typeDefault)) {
                        p("this.b_" + lname + " = ("+lname+" != "+typeDefault+");");
                    } else {
                        p("this.b_" + lname + " = ("+lname+" != "+typeDefault+");");
                    }
                } else {
                    p("this.b_" + lname + " = true;");
                }
            }
            p("this.f_" + lname + " = " + lname + ";");
            p("return (T)this;");
            unindent();
            p("}");
            p();

            p("public void clear" + uname + "() {");
            indent();
          	p("loadAndClear();");
            if (primitive) {
                p("this.b_" + lname + " = false;");
            }
            p("this.f_" + lname + " = " + typeDefault + ";");
            unindent();
            p("}");
            p();
        }

    }