| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <jni.h> |
| |
| class Schema { |
| private: |
| |
| /** |
| * jni env |
| */ |
| JNIEnv *jniEnv = NULL; |
| |
| /** |
| * schema class for get method id |
| */ |
| jclass schemaClass = NULL; |
| |
| /** |
| * carbon schema data |
| */ |
| jobject schema = NULL; |
| |
| /** |
| * check ordinal, ordinal can't be negative |
| * |
| * @param ordinal int value, the data index of carbon Row |
| */ |
| void checkOrdinal(int ordinal); |
| |
| public: |
| |
| /** |
| * constructor with jni env and carbon schema data |
| * |
| * @param env jni env |
| * @param schema carbon schema data |
| */ |
| Schema(JNIEnv *env, jobject schema); |
| |
| /** |
| * get fields length of schema |
| * |
| * @return fields length |
| */ |
| int getFieldsLength(); |
| |
| /** |
| * get field name by ordinal |
| * |
| * @param ordinal the data index of carbon schema |
| * @return ordinal field name |
| */ |
| char *getFieldName(int ordinal); |
| |
| /** |
| * get field data type name by ordinal |
| * |
| * @param ordinal the data index of carbon schema |
| * @return ordinal field data type name |
| */ |
| char *getFieldDataTypeName(int ordinal); |
| |
| /** |
| * get array child element data type name by ordinal |
| * |
| * @param ordinal the data index of carbon schema |
| * @return ordinal array child element data type name |
| */ |
| char *getArrayElementTypeName(int ordinal); |
| }; |