| /* |
| * 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 "Configuration.h" |
| |
| Configuration::Configuration(JNIEnv *env) { |
| this->jniEnv = env; |
| configurationClass = env->FindClass("org/apache/hadoop/conf/Configuration"); |
| if (configurationClass == NULL) { |
| throw std::runtime_error("Can't find the class in java: org/apache/hadoop/conf/Configuration"); |
| } |
| |
| initID = jniEnv->GetMethodID(configurationClass, "<init>", "()V"); |
| if (initID == NULL) { |
| throw std::runtime_error("Can't find init it in java: org/apache/hadoop/conf/Configuration"); |
| } |
| configurationObject = jniEnv->NewObject(configurationClass, initID); |
| if (configurationClass == NULL) { |
| throw std::runtime_error("Can't create object in java: org/apache/hadoop/conf/Configuration"); |
| } |
| } |
| |
| void Configuration::check() { |
| if (configurationClass == NULL) { |
| throw std::runtime_error("configurationClass can't be NULL. Please init first."); |
| } |
| if (configurationObject == NULL) { |
| throw std::runtime_error("configurationObject can't be NULL. Please init first."); |
| } |
| } |
| |
| void Configuration::set(char *key, char *value) { |
| if (key == NULL) { |
| throw std::runtime_error("key parameter can't be NULL."); |
| } |
| if (value == NULL) { |
| throw std::runtime_error("value parameter can't be NULL."); |
| } |
| check(); |
| |
| if (setID == NULL) { |
| setID = jniEnv->GetMethodID(configurationClass, "set", |
| "(Ljava/lang/String;Ljava/lang/String;)V"); |
| if (setID == NULL) { |
| throw std::runtime_error("Can't find the method in java: set"); |
| } |
| } |
| |
| jvalue args[2]; |
| args[0].l = jniEnv->NewStringUTF(key); |
| args[1].l = jniEnv->NewStringUTF(value); |
| jniEnv->CallObjectMethodA(configurationObject, setID, args); |
| } |
| |
| |
| char *Configuration::get(char *key, char *defaultValue) { |
| if (key == NULL) { |
| throw std::runtime_error("key parameter can't be NULL."); |
| } |
| if (defaultValue == NULL) { |
| throw std::runtime_error("defaultValue parameter can't be NULL."); |
| } |
| |
| check(); |
| |
| if (getID == NULL) { |
| getID = jniEnv->GetMethodID(configurationClass, "get", |
| "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;"); |
| if (getID == NULL) { |
| throw std::runtime_error("Can't find the method in java: get"); |
| } |
| } |
| |
| jvalue args[2]; |
| args[0].l = jniEnv->NewStringUTF(key); |
| args[1].l = jniEnv->NewStringUTF(defaultValue); |
| |
| jobject result = jniEnv->CallObjectMethodA(configurationObject, getID, args); |
| char *str = (char *) jniEnv->GetStringUTFChars((jstring) result, JNI_FALSE); |
| jniEnv->DeleteLocalRef(result); |
| return str; |
| } |
| |
| jobject Configuration::getConfigurationObject() { |
| return configurationObject; |
| } |