Github user ajantha-bhat commented on a diff in the pull request: https://github.com/apache/carbondata/pull/2837#discussion_r228700880 --- Diff: store/CSDK/src/CarbonWriter.cpp --- @@ -0,0 +1,161 @@ +/* + * 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 <stdexcept> +#include "CarbonWriter.h" + +void CarbonWriter::builder(JNIEnv *env) { + if (env == NULL) { + throw std::runtime_error("JNIEnv parameter can't be NULL."); + } + jniEnv = env; + carbonWriter = env->FindClass("org/apache/carbondata/sdk/file/CarbonWriter"); + if (carbonWriter == NULL) { + throw std::runtime_error("Can't find the class in java: org/apache/carbondata/sdk/file/CarbonWriter"); + } + jmethodID carbonWriterBuilderID = env->GetStaticMethodID(carbonWriter, "builder", + "()Lorg/apache/carbondata/sdk/file/CarbonWriterBuilder;"); + if (carbonWriterBuilderID == NULL) { + throw std::runtime_error("Can't find the method in java: carbonWriterBuilder"); + } + carbonWriterBuilderObject = env->CallStaticObjectMethod(carbonWriter, carbonWriterBuilderID); +} + +bool CarbonWriter::checkBuilder() { + if (carbonWriterBuilderObject == NULL) { + throw std::runtime_error("carbonWriterBuilder Object can't be NULL. Please call builder method first."); + } +} + +void CarbonWriter::outputPath(char *path) { + if (path == NULL) { + throw std::runtime_error("path parameter can't be NULL."); + } + checkBuilder(); --- End diff -- This logic is required for carbon Reader also in CarbonReader.cpp for API which is called after builder. please add
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