<commit_before>/*******************************************************************************
 * 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.
 *******************************************************************************/
package org.ofbiz.entity.datasource;

import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;

import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilValidate;
import org.ofbiz.entity.config.model.Datasource;
import org.ofbiz.entity.config.model.EntityConfig;

/**
 * Generic Entity Helper Factory Class
 *
 */
public class GenericHelperFactory {

    private static final Debug.OfbizLogger module = Debug.getOfbizLogger(java.lang.invoke.MethodHandles.lookup().lookupClass());

    // protected static UtilCache helperCache = new UtilCache("entity.GenericHelpers", 0, 0);
    protected static final Map<String, GenericHelper> helperCache = new HashMap<String, GenericHelper>();

    public static GenericHelper getHelper(GenericHelperInfo helperInfo) {
        GenericHelper helper = helperCache.get(helperInfo.getHelperFullName());

        if (helper == null) { // don't want to block here
            synchronized (GenericHelperFactory.class) {
                // must check if null again as one of the blocked threads can still enter
                helper = helperCache.get(helperInfo.getHelperFullName());
                if (helper == null) {
                    try {
                        Datasource datasourceInfo = EntityConfig.getDatasource(helperInfo.getHelperBaseName());

                        if (datasourceInfo == null) {
                            throw new IllegalStateException("Could not find datasource definition with name " + helperInfo.getHelperBaseName());
                        }
                        String helperClassName = datasourceInfo.getHelperClass();
                        Class<?> helperClass = null;

                        if (UtilValidate.isNotEmpty(helperClassName)) {
                            try {
                                ClassLoader loader = Thread.currentThread().getContextClassLoader();
                                helperClass = loader.loadClass(helperClassName);
                            } catch (ClassNotFoundException e) {
                                Debug.logWarning(e, module);
                                throw new IllegalStateException("Error loading GenericHelper class \"" + helperClassName + "\": " + e.getMessage());
                            }
                        }

                        Class<?>[] paramTypes = new Class<?>[] {GenericHelperInfo.class};
                        Object[] params = new Object[] {helperInfo};

                        java.lang.reflect.Constructor<?> helperConstructor = null;

                        if (helperClass != null) {
                            try {
                                helperConstructor = helperClass.getConstructor(paramTypes);
                            } catch (NoSuchMethodException e) {
                                Debug.logWarning(e, module);
                                throw new IllegalStateException("Error loading GenericHelper class \"" + helperClassName + "\": " + e.getMessage());
                            }
                        }
                        try {
                            helper = (GenericHelper) helperConstructor.newInstance(params);
                        } catch (IllegalAccessException | InstantiationException | InvocationTargetException
                                | ExceptionInInitializerError | IllegalArgumentException | NullPointerException e) {
                            Debug.logWarning(e, module);
                            throw new IllegalStateException("Error loading GenericHelper class \"" + helperClassName + "\": " + e.getMessage());
                        }

                        if (helper != null)
                            helperCache.put(helperInfo.getHelperFullName(), helper);
                    } catch (SecurityException e) {<commit_msg>stock patch: GenericHelperFactory: bugfix thread safety<commit_after>/*******************************************************************************
 * 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.
 *******************************************************************************/
package org.ofbiz.entity.datasource;

import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilValidate;
import org.ofbiz.entity.config.model.Datasource;
import org.ofbiz.entity.config.model.EntityConfig;

/**
 * Generic Entity Helper Factory Class
 *
 */
public class GenericHelperFactory {

    private static final Debug.OfbizLogger module = Debug.getOfbizLogger(java.lang.invoke.MethodHandles.lookup().lookupClass());

    // protected static UtilCache helperCache = new UtilCache("entity.GenericHelpers", 0, 0);
    // SCIPIO: 2018-10-16: use unmodifiableMap for thread-safe reads
    //protected static final Map<String, GenericHelper> helperCache = new HashMap<String, GenericHelper>();
    protected static Map<String, GenericHelper> helperCache = Collections.emptyMap();

    public static GenericHelper getHelper(GenericHelperInfo helperInfo) {
        GenericHelper helper = helperCache.get(helperInfo.getHelperFullName());

        if (helper == null) { // don't want to block here
            synchronized (GenericHelperFactory.class) {
                // must check if null again as one of the blocked threads can still enter
                helper = helperCache.get(helperInfo.getHelperFullName());
                if (helper == null) {
                    try {
                        Datasource datasourceInfo = EntityConfig.getDatasource(helperInfo.getHelperBaseName());

                        if (datasourceInfo == null) {
                            throw new IllegalStateException("Could not find datasource definition with name " + helperInfo.getHelperBaseName());
                        }
                        String helperClassName = datasourceInfo.getHelperClass();
                        Class<?> helperClass = null;

                        if (UtilValidate.isNotEmpty(helperClassName)) {
                            try {
                                ClassLoader loader = Thread.currentThread().getContextClassLoader();
                                helperClass = loader.loadClass(helperClassName);
                            } catch (ClassNotFoundException e) {
                                Debug.logWarning(e, module);
                                throw new IllegalStateException("Error loading GenericHelper class \"" + helperClassName + "\": " + e.getMessage());
                            }
                        }

                        Class<?>[] paramTypes = new Class<?>[] {GenericHelperInfo.class};
                        Object[] params = new Object[] {helperInfo};

                        java.lang.reflect.Constructor<?> helperConstructor = null;

                        if (helperClass != null) {
                            try {
                                helperConstructor = helperClass.getConstructor(paramTypes);
                            } catch (NoSuchMethodException e) {
                                Debug.logWarning(e, module);
                                throw new IllegalStateException("Error loading GenericHelper class \"" + helperClassName + "\": " + e.getMessage());
                            }
                        }
                        try {
                            helper = (GenericHelper) helperConstructor.newInstance(params);
                        } catch (IllegalAccessException | InstantiationException | InvocationTargetException
                                | ExceptionInInitializerError | IllegalArgumentException | NullPointerException e) {
                            Debug.logWarning(e, module);
                            throw new IllegalStateException("Error loading GenericHelper class \"" + helperClassName + "\": " + e.getMessage());
                        }

                        if (helper != null) {
                            // SCIPIO: 2018-10-16: clone cache to ensure thread-safe reads
                            //helperCache.put(helperInfo.getHelperFullName(), helper);
                            Map<String, GenericHelper> newHelperCache = new HashMap<>(helperCache);
                            newHelperCache.put(helperInfo.getHelperFullName(), helper);
                            helperCache = Collections.unmodifiableMap(newHelperCache);
                        }
                    } catch (SecurityException e) {
{'fraction_non_alphanumeric': 0.10976916333885263, 'fraction_numerical': 0.0027271841823317423, 'mean_word_length': 1.9997078586035641, 'pattern_counts': {'":': 6, '<': 18, '<?xml version=': 0, '>': 18, 'https://': 0, 'lorem ipsum': 0, 'www.': 2, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 2, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '7323097', 'n_tokens_mistral': 2250, 'n_tokens_neox': 2139, 'n_words': 643}