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290
src/main/java/net/tccn/base/arango/ArangoSource.java
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290
src/main/java/net/tccn/base/arango/ArangoSource.java
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package net.tccn.base.arango;
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import com.arangodb.*;
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import com.arangodb.entity.DocumentCreateEntity;
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import com.arangodb.entity.DocumentDeleteEntity;
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import com.arangodb.entity.MultiDocumentEntity;
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import javax.persistence.Table;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import static java.util.Arrays.asList;
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/**
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* 管理 数据源连接对象
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* @author: liangxianyou at 2018/12/15 11:35.
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*/
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public class ArangoSource {
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public Logger logger = Logger.getLogger(this.getClass().getSimpleName());
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private ArangoDB arangoDb;
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private static Map<String, ArangoSource> sources = new HashMap();
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static {
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init();
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}
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public static void init() {
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sources.put("main", new ArangoSource(new ArangoDB.Builder().host("120.24.230.60", 8529).user("root").password("abc123").build()));
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sources.put("abc", new ArangoSource(new ArangoDB.Builder().host("192.168.199.135", 8529).user("root").password("root").build()));
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}
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public ArangoSource(ArangoDB arangoDb) {
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this.arangoDb = arangoDb;
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}
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public static ArangoSource use() {
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return use("main");
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}
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public static ArangoSource use(String unit) {
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if (unit == null || unit.isEmpty()) {
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unit = "main";
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}
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return sources.get(unit);
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}
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public ArangoDB arangoDB() {
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return arangoDb;
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}
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public ArangoDatabase db(String db) {
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return arangoDb.db(db);
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}
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public <T extends Doc> ArangoCollection collection(Doc<T> doc) {
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return collection(doc.getClass());
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}
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public <T extends Doc> ArangoCollection collection(Class<T> type) {
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Table table = type.getAnnotation(Table.class);
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//createDb(table.catalog());
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return arangoDb.db(table.catalog()).collection(table.name());
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}
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public boolean createDb(String db) {
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ArangoDatabase database = arangoDb.db(db);
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if (!database.exists()) {
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return database.create();
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}
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logger.log(Level.INFO, "arango database exists");
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return true;
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}
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public <T extends Doc> ArangoCollection createDocument(Doc<T> doc) {
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Class<? extends Doc> type = doc.getClass();
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Table table = type.getAnnotation(Table.class);
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ArangoDatabase database = arangoDb.db(table.catalog());
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if (!database.exists()) {
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database.create();
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}
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ArangoCollection collection = database.collection(table.name());
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if (!collection.exists()) {
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collection.create();
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}
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return collection;
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}
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// 首字母大写
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private static Function<String, String> upFirst = (s) -> {
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return s.substring(0, 1).toUpperCase() + s.substring(1);
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};
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private static Map<Class, Class[]> clazzMap = new HashMap<>();
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static {
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clazzMap.put(ArrayList.class, new Class[]{List.class, ArrayList.class, String.class});
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clazzMap.put(HashMap.class, new Class[]{Map.class, HashMap.class, String.class});
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clazzMap.put(Long.class, new Class[]{Long.class, Integer.class, long.class, int.class, short.class, String.class});
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clazzMap.put(String.class, new Class[]{String.class});
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}
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/**
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* 还原 Doc对象
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* @param map
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* @param type
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* @param <T>
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* @return
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*/
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public <T extends Doc> T toDoc1(Map<String, Object> map, Class<T> type) {
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try {
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Doc doc = type.newInstance();
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map.forEach((k, v) -> {
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String methodName = "set" + upFirst.apply(k);
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Method method = null;
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Class[] clazzs = clazzMap.get(v == null ? null : v.getClass());
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if (clazzs == null) {
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doc.set(k, v);
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} else {
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for (Class clazz : clazzs) {
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try {
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method = type.getDeclaredMethod(methodName, clazz);
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} catch (NoSuchMethodException e) {
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}
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if (method != null) {
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try {
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if (v.getClass() == Long.class && clazz != Long.class) {//多种数值类型的处理
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Object _v;
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switch (clazz.getSimpleName()) {
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case "int":
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case "Integer": _v = (int)((long) v); break;
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case "short":
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case "Short": _v = (short)((long) v); break;
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default: _v = v;
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}
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System.out.println(clazz.getSimpleName());
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method.invoke(doc, _v);
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} else {
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method.invoke(doc, v);
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}
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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doc.set(k, v);
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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doc.set(k, v);
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}
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break;
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}
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}
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}
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if (method == null) {
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doc.set(k, v);
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}
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});
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return (T) doc;
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} catch (Exception e) {
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}
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return null;
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}
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private Predicate isEmpty = (x) -> {
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if (x == null)
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return true;
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if (x instanceof List)
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return ((List) x).isEmpty();
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if (x instanceof String)
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return ((String) x).isEmpty();
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if (x instanceof Map)
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return ((Map) x).isEmpty();
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if (x instanceof Collection)
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return ((Collection) x).isEmpty();
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return false;
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};
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/**
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* Doc 转为查询对象
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* @param t
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* @param <T>
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* @return
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*/
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private Function<Doc, StringBuilder> filterBuilder = (t) -> {
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Table table = t.getClass().getAnnotation(Table.class);
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StringBuilder buf = new StringBuilder();
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buf.append("for d in ").append(table.name());
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buf.append(" filter 1==1");
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t.toDoc().forEach((k, v) -> {
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if (v != null && (v.getClass() == String.class || v instanceof Number)) {
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buf.append(" and d.").append(k).append("==");
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}
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if (v.getClass() == String.class) {
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buf.append("'").append(v).append("'");
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} else if (v instanceof Number) {
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buf.append(v);
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}
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});
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return buf;
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};
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private Function<Doc, StringBuilder> orderBuilder = (t) -> {
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StringBuilder buf = new StringBuilder();
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Map<String, Integer> order = t.getOrder();
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if (isEmpty.test(order)) {
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return buf;
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}
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buf.append(" sort ");
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order.forEach((k, v) -> {
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buf.append("d.").append(k).append(v == 1 ? " desc," : " asc,");
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});
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buf.deleteCharAt(buf.length() - 1);
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return buf;
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};
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private Function<Doc, StringBuilder> returnBuilder = (t) -> {
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StringBuilder buf = new StringBuilder();
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if (isEmpty.test(t.get_Shows())) {
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return buf.append(" return d");
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}
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buf.append(" return {");
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t.get_Shows().forEach(x -> {
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buf.append(x).append(":d.").append(x).append(",");
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});
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buf.deleteCharAt(buf.length() - 1).append("}");
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return buf;
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};
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public <T extends Doc> String parseAqlCount(T t) {
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StringBuilder buf = new StringBuilder();
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buf.append(filterBuilder.apply(t));
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buf.append(" COLLECT WITH COUNT INTO total");
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buf.append(" return total");
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//logger.log(Level.INFO, buf.toString());
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return buf.toString();
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}
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public <T extends Doc> String parseAql(T t, int offset, int ps) {
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if (offset < 0) offset = 0;
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if (ps <= 0) ps = 1000;
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StringBuilder buf = new StringBuilder();
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buf.append(filterBuilder.apply(t));
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buf.append(orderBuilder.apply(t));
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buf.append(" limit ").append(offset).append(",").append(ps);
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buf.append(returnBuilder.apply(t));
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//logger.log(Level.INFO, buf.toString());
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return buf.toString();
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}
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//----------------------------------------
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//ok
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public <T extends Doc> T save(T doc) {
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DocumentCreateEntity<Map> tmap = collection(doc).insertDocument(doc.toDoc());
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doc.setKey(tmap.getKey());
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doc.setId(tmap.getId());
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return doc;
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}
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//ok
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public <T extends Doc> void update(T doc) {
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collection(doc).updateDocument(doc.getKey(), doc.toDoc());
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}
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//ok
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public <T extends Doc> T getDoc(Object key, Class<T> type) {
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return collection(type).getDocument(String.valueOf(key), type);
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}
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//ok
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public <T extends Doc> DocumentDeleteEntity<Void> delete(String key, Class<T> type) {
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return collection(type).deleteDocument(key);
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}
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//ok
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public <T extends Doc> MultiDocumentEntity<DocumentDeleteEntity<Void>> deleteAll(Doc<T> ... docs) {
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return collection(docs[0]).deleteDocuments(asList(docs));
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}
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public <T extends Doc> MultiDocumentEntity find(Collection keys, Class<T> type) {
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return collection(type).getDocuments(keys, type);
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}
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}
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