| /* |
| * 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.apache.camel.dataformat.bindy; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.text.NumberFormat; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.dataformat.bindy.annotation.Link; |
| import org.apache.camel.dataformat.bindy.annotation.OneToMany; |
| import org.apache.camel.support.ObjectHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * The {@link BindyAbstractFactory} implements what its common to all the formats |
| * supported by Camel Bindy |
| */ |
| public abstract class BindyAbstractFactory implements BindyFactory { |
| private static final Logger LOG = LoggerFactory.getLogger(BindyAbstractFactory.class); |
| protected final Map<String, List<Field>> annotatedLinkFields = new LinkedHashMap<>(); |
| protected FormatFactory formatFactory; |
| protected Set<Class<?>> models; |
| protected Set<String> modelClassNames; |
| protected String crlf; |
| protected String eol; |
| |
| private String locale; |
| private Class<?> type; |
| |
| public BindyAbstractFactory(Class<?> type) throws Exception { |
| this.type = type; |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Class name: {}", type.getName()); |
| } |
| |
| initModel(); |
| } |
| |
| /** |
| * method uses to initialize the model representing the classes who will |
| * bind the data. This process will scan for classes according to the |
| * package name provided, check the annotated classes and fields. |
| * |
| * @throws Exception |
| */ |
| public void initModel() throws Exception { |
| models = new HashSet<>(); |
| modelClassNames = new HashSet<>(); |
| |
| loadModels(type); |
| } |
| |
| /** |
| * Recursively load model. |
| * |
| * @param root |
| */ |
| @SuppressWarnings("rawtypes") |
| private void loadModels(Class<?> root) { |
| models.add(root); |
| modelClassNames.add(root.getName()); |
| |
| for (Field field : root.getDeclaredFields()) { |
| Link linkField = field.getAnnotation(Link.class); |
| |
| if (linkField != null) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Class linked: {}, Field: {}", field.getType(), field); |
| } |
| |
| models.add(field.getType()); |
| modelClassNames.add(field.getType().getName()); |
| |
| loadModels(field.getType()); |
| } |
| |
| OneToMany oneToManyField = field.getAnnotation(OneToMany.class); |
| |
| if (oneToManyField != null) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Class (OneToMany) linked: {}, Field: {}", field.getType(), field); |
| } |
| |
| Type listType = field.getGenericType(); |
| Type type = ((ParameterizedType) listType).getActualTypeArguments()[0]; |
| Class clazz = (Class<?>)type; |
| |
| models.add(clazz); |
| modelClassNames.add(clazz.getName()); |
| |
| loadModels(clazz); |
| } |
| |
| } |
| } |
| |
| /** |
| * Find fields annotated in each class of the model |
| */ |
| public abstract void initAnnotatedFields() throws Exception; |
| |
| public abstract void bind(CamelContext camelContext, List<String> data, Map<String, Object> model, int line) throws Exception; |
| |
| public abstract String unbind(CamelContext camelContext, Map<String, Object> model) throws Exception; |
| |
| /** |
| * Link objects together |
| */ |
| public void link(Map<String, Object> model) throws Exception { |
| |
| // Iterate class by class |
| for (String link : annotatedLinkFields.keySet()) { |
| List<Field> linkFields = annotatedLinkFields.get(link); |
| |
| // Iterate through Link fields list |
| for (Field field : linkFields) { |
| |
| // Change protection for private field |
| field.setAccessible(true); |
| |
| // Retrieve linked object |
| String toClassName = field.getType().getName(); |
| Object to = model.get(toClassName); |
| |
| org.apache.camel.util.ObjectHelper.notNull(to, "No @link annotation has been defined for the object to link"); |
| field.set(model.get(field.getDeclaringClass().getName()), to); |
| } |
| } |
| } |
| |
| /** |
| * Factory method generating new instances of the model and adding them to a |
| * HashMap |
| * |
| * @return Map is a collection of the objects used to bind data from |
| * records, messages |
| * @throws Exception can be thrown |
| */ |
| public Map<String, Object> factory() throws Exception { |
| Map<String, Object> mapModel = new HashMap<>(); |
| |
| for (Class<?> cl : models) { |
| Object obj = ObjectHelper.newInstance(cl); |
| |
| // Add instance of the class to the Map Model |
| mapModel.put(obj.getClass().getName(), obj); |
| } |
| |
| return mapModel; |
| } |
| |
| /** |
| * Indicates whether this factory can support a row comprised of the identified classes |
| * @param classes the names of the classes in the row |
| * @return true if the model supports the identified classes |
| */ |
| public boolean supportsModel(Set<String> classes) { |
| return modelClassNames.containsAll(classes); |
| } |
| |
| /** |
| * Generate a unique key |
| * |
| * @param key1 The key of the section number |
| * @param key2 The key of the position of the field |
| * @return the key generated |
| */ |
| protected static Integer generateKey(Integer key1, Integer key2) { |
| String key2Formatted; |
| String keyGenerated; |
| |
| // BigIntegerFormatFactory added for ticket - camel-2773 |
| if ((key1 != null) && (key2 != null)) { |
| key2Formatted = getNumberFormat().format((long) key2); |
| keyGenerated = String.valueOf(key1) + key2Formatted; |
| } else { |
| throw new IllegalArgumentException("@Section and/or @KeyValuePairDataField have not been defined"); |
| } |
| |
| return Integer.valueOf(keyGenerated); |
| } |
| |
| private static NumberFormat getNumberFormat() { |
| // Get instance of NumberFormat |
| NumberFormat nf = NumberFormat.getInstance(); |
| |
| // set max number of digits to 3 (thousands) |
| nf.setMaximumIntegerDigits(3); |
| nf.setMinimumIntegerDigits(3); |
| |
| return nf; |
| } |
| |
| public static Object getDefaultValueForPrimitive(Class<?> clazz) throws Exception { |
| if (clazz == byte.class) { |
| return Byte.MIN_VALUE; |
| } else if (clazz == short.class) { |
| return Short.MIN_VALUE; |
| } else if (clazz == int.class) { |
| return Integer.MIN_VALUE; |
| } else if (clazz == long.class) { |
| return Long.MIN_VALUE; |
| } else if (clazz == float.class) { |
| return Float.MIN_VALUE; |
| } else if (clazz == double.class) { |
| return Double.MIN_VALUE; |
| } else if (clazz == char.class) { |
| return Character.MIN_VALUE; |
| } else if (clazz == boolean.class) { |
| return false; |
| } else if (clazz == String.class) { |
| return ""; |
| } else { |
| return null; |
| } |
| |
| } |
| |
| /** |
| * Find the carriage return set |
| */ |
| public String getCarriageReturn() { |
| return crlf; |
| } |
| |
| /** |
| * Find the carriage return set |
| */ |
| public String getEndOfLine() { |
| return eol; |
| } |
| |
| /** |
| * Format the object into a string according to the format rule defined |
| */ |
| @SuppressWarnings("unchecked") |
| public String formatString(Format<?> format, Object value) throws Exception { |
| String strValue = ""; |
| |
| if (value != null) { |
| try { |
| strValue = ((Format<Object>)format).format(value); |
| } catch (Exception e) { |
| throw new IllegalArgumentException("Formatting error detected for the value: " + value, e); |
| } |
| } |
| |
| return strValue; |
| } |
| |
| public String getLocale() { |
| return locale; |
| } |
| |
| public void setLocale(String locale) { |
| this.locale = locale; |
| } |
| |
| public void setFormatFactory(FormatFactory formatFactory) { |
| this.formatFactory = formatFactory; |
| } |
| } |