com.tsc9526.monalisa.orm.model.Model Maven / Gradle / Ivy
/*******************************************************************************************
* Copyright (c) 2016, zzg.zhou([email protected])
*
* Monalisa is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see implements Serializable ,Shallowable,Specifiable{
static Logger logger=Logger.getLogger(Model.class);
private static final long serialVersionUID = 703976566431364670L;
protected static DataSourceManager dsm = DataSourceManager.getInstance();
private static Map hCachePartitionTables = new ConcurrentHashMap();
private static Map hCacheHistoryTables = new ConcurrentHashMap();
protected ModelHolder $modelHolder;
protected String $tableName;
protected String[] $primaryKeys;
protected transient ModelMeta $modelMeta;
protected transient DBConfig $db;
public Model() {
}
public Model(String tableName, String... primaryKeys) {
this.$tableName = tableName;
this.$primaryKeys = primaryKeys;
}
public T shallow(){
try{
T x=(T)this.getClass().newInstance();
x.$tableName = $tableName;
x.$primaryKeys = $primaryKeys;
x.$db = $db;
return x;
} catch (Exception e) {
return MelpException.throwRuntimeException(e);
}
}
protected ModelMeta mm() {
if ($modelMeta == null) {
$modelMeta = ModelMeta.getModelMeta(this);
}
return $modelMeta;
}
protected synchronized ModelHolder holder() {
if ($modelHolder == null) {
$modelHolder = new ModelHolder(this);
}else if($modelHolder.model==null){
$modelHolder.model=this;
}
return $modelHolder;
}
/**
* 设置访问数据库
*
* @param db database
* @return this
*/
public T use(DBConfig db) {
this.$db = db;
return (T) this;
}
/**
* @return The Used DBConfig
*/
public DBConfig use(){
return this.$db;
}
/**
* Check if the model is dirty
*
* @return true if dirty otherwise false
*/
public boolean dirty() {
return holder().dirty;
}
/**
* Set the model dirty
*
* @param dirty dirty
* @return this
*/
public T dirty(boolean dirty) {
holder().dirty = dirty;
return (T) this;
}
/**
* Check if the model is db entity
*
* @return true if is db entity otherwise false
*/
public boolean entity() {
return holder().entity;
}
/**
* Set the model db entity
*
* @param entity entity
* @return this
*/
public T entity(boolean entity) {
holder().entity = entity;
return (T) this;
}
/**
* Parse dataObject to this model
*
* @param dataObject
* HttpServletRequest, Map, JsonObject, String(json/xml),
* JavaBean
* @param mappings
* [Options] Translate dataObject field to model field
* For example:
* "user_id=id", ... // Parse dataObject.user_id to Model.id
* Another example:
* "~XXX." //Only parse dataObject's fields with prefix: "XXX."
*
* @return this
*
* @see com.tsc9526.monalisa.tools.clazz.MelpClass#parse(Object, Object, String...)
*/
public T parse(Object dataObject, String... mappings) {
MelpClass.parse(this, dataObject, mappings);
return (T) this;
}
/**
* Load by primary keys
*
* @return this model if load success, otherwise null;
*/
public T load() {
Query query = dialect().load(this);
query.use(db());
before(ModelEvent.LOAD);
Object r = query.load(this);
after(ModelEvent.LOAD, r!=null?1:-1);
return (T) r;
}
/**
* 存储对象到数据库
*
* @return 成功变更的记录数
*/
public int save() {
if (history()) {
return Tx.execute(new Atom() {
public Integer execute() {
int r=doSave();
saveHistory(ModelEvent.INSERT);
return r;
}
});
} else {
return doSave();
}
}
protected int doSave() {
int r = -1;
before(ModelEvent.INSERT);
doValidate();
r = new Insert(this).insert(false);
after(ModelEvent.INSERT, r);
return r;
}
/**
* 存储对象到数据库， 如果主键冲突， 则执行更新操作
*
* @return 成功变更的记录数
*/
public int saveOrUpdate() {
if (history()) {
return Tx.execute(new Atom() {
public Integer execute() {
int r=doSaveOrUpdate();
saveHistory(ModelEvent.REPLACE);
return r;
}
});
} else {
return doSaveOrUpdate();
}
}
protected int doSaveOrUpdate() {
int r = -1;
before(ModelEvent.REPLACE);
doValidate();
r = new Insert(this).insert(true);
after(ModelEvent.REPLACE, r);
return r;
}
/**
* 更新对象到数据库
*
* @return 成功变更的记录数
*/
public int update() {
if (history()) {
return Tx.execute(new Atom() {
public Integer execute() {
int r= doUpdate();
saveHistory(ModelEvent.UPDATE);
return r;
}
});
} else {
return doUpdate();
}
}
protected int doUpdate() {
int r = -1;
before(ModelEvent.UPDATE);
doValidate();
r = new Update(this).update();
after(ModelEvent.UPDATE, r);
return r;
}
/**
* 从数据库删除该记录
*
* @return 成功变更的记录数
*/
public int delete() {
if (history()) {
return Tx.execute(new Atom() {
public Integer execute() {
int r= doDelete();
saveHistory(ModelEvent.DELETE);
return r;
}
});
} else {
return doDelete();
}
}
protected int doDelete() {
int r = -1;
before(ModelEvent.DELETE);
r = new Delete(this).delete();
after(ModelEvent.DELETE, r);
return r;
}
protected void saveHistory(ModelEvent event) {
List pks=mm().getPkFields();
if(pks.size()<1){
return;
}
DBConfig db = mm().db;
String table = mm().tableName;
DBConfig historyDB = db;
String hdb = DbProp.PROP_DB_HISTORY_DB.getValue(db);
if (hdb != null && hdb.length() > 0) {
historyDB = dsm.getDBConfig(hdb, null);
if(historyDB==null){
historyDB = db.getByConfigName(hdb);
}
}
if (historyDB == null) {
throw new RuntimeException("History db config: " + hdb + " not found! Current db: " + db.getKey() + ", table: " + table);
}
String historyTableName = DbProp.PROP_DB_HISTORY_PREFIX_TABLE.getValue(db) + table;
String key=historyDB.getKey()+":"+historyTableName;
if(!hCacheHistoryTables.containsKey(key)){
CreateTable createTable = dialect().getCreateTable(db, table);
CreateTable historyTable = createTable.createTable(TableType.HISTORY, historyTableName);
dialect().createTable(historyDB, historyTable);
hCacheHistoryTables.put(key, key);
}
Tx tx = Tx.getTx();
String prefix = DbProp.PROP_DB_HISTORY_PREFIX_COLUMN.getValue(db);
Record history = new Record(historyTableName);
history.use(historyDB);
Model m=shallow();
for(FGS fgs:pks){
Column c=fgs.getAnnotation(Column.class);
if(c.key()){
m.set(c.name(), fgs.getObject(this));
}
}
m.load();
history.parse(m);
for(FGS fgs:changedFields()){
String name =fgs.getFieldName();
FGS x=history.field(name);
if(x!=null){
x.setObject(history, fgs.getObject(this));
}
}
history.set(prefix + "time", new Date());
history.set(prefix + "type", event.name());
history.set(prefix + "txid", tx == null ? "" : tx.getTxid());
history.set(prefix + "user", Tx.getContext(Tx.CONTEXT_CURRENT_USERID));
history.save();
}
protected boolean history() {
String h = DbProp.PROP_DB_HISTORY_TABLES.getValue(mm().db);
if (h != null && h.trim().length() > 0) {
String prefix = DbProp.PROP_DB_HISTORY_PREFIX_TABLE.getValue(mm().db);
String n = mm().tableName;
if(n.startsWith(prefix)){
return false;
}
String[] xs = h.trim().split(",|;|\\|");
for (String x : xs) {
x = x.trim().replace("%", ".*");
if (n.matches(x)) {
return true;
}
}
}
return false;
}
protected void before(ModelEvent event) {
if (event == ModelEvent.INSERT || event == ModelEvent.UPDATE || event==ModelEvent.REPLACE) {
Date now = new Date();
String createTimeColumn = DbProp.PROP_TABLE_AUTO_SET_CREATE_TIME.getValue(mm().db, mm().tableName);
String updateTimeColumn = DbProp.PROP_TABLE_AUTO_SET_UPDATE_TIME.getValue(mm().db, mm().tableName);
String createByColumn = DbProp.PROP_TABLE_AUTO_SET_CREATE_BY.getValue(mm().db, mm().tableName);
String updateByColumn = DbProp.PROP_TABLE_AUTO_SET_UPDATE_BY.getValue(mm().db, mm().tableName);
if (event == ModelEvent.INSERT || event==ModelEvent.REPLACE){
if(createTimeColumn != null && createTimeColumn.trim().length() > 0) {
FGS createTime = field(createTimeColumn.trim());
if (createTime != null && createTime.getObject(this) == null) {
createTime.setObject(this, now);
}
}
if(createByColumn != null && createByColumn.trim().length() > 0) {
FGS createBy = field(createByColumn.trim());
if (createBy != null && createBy.getObject(this) == null) {
Object user=Tx.getContext(Tx.CONTEXT_CURRENT_USERID);
if(user!=null){
createBy.setObject(this, user);
}
}
}
}
if (event == ModelEvent.UPDATE || event==ModelEvent.REPLACE){
if(updateTimeColumn != null && updateTimeColumn.trim().length() > 0) {
FGS updateTime = field(updateTimeColumn.trim());
if (updateTime != null && updateTime.getObject(this) == null) {
updateTime.setObject(this, now);
}
}
if(updateByColumn != null && updateByColumn.trim().length() > 0) {
FGS updateBy = field(updateByColumn.trim());
if (updateBy != null && updateBy.getObject(this) == null) {
Object user=Tx.getContext(Tx.CONTEXT_CURRENT_USERID);
if(user!=null){
updateBy.setObject(this, user);
}
}
}
}
}else if(event==ModelEvent.LOAD){
entity(false);
}
if (mm().listener != null) {
mm().listener.before(event, this);
}
}
protected void after(ModelEvent event, int r) {
if (r >= 0) {
dirty(false);
switch (event) {
case INSERT:
entity(true);
break;
case DELETE:
entity(false);
break;
case UPDATE:
entity(true);
break;
case REPLACE:
entity(true);
break;
case LOAD:
entity(true);
break;
}
}
if (mm().listener != null) {
mm().listener.after(event, this, r);
}
}
/**
* Set all fields to null and clear any field changes
*
* @return this
*/
public T clear() {
for (FGS fgs : fields()) {
fgs.setObject(this, null);
}
holder().clearChanges();
entity(false);
return (T) this;
}
/**
* Set all fields to the default value
*
* @return this
*/
public T defaults() {
for (FGS fgs : fields()) {
Column c = fgs.getAnnotation(Column.class);
if(!c.auto()){
String v = c.value();
if ("NULL".equalsIgnoreCase(v)) {
if (c.notnull()) {
Object x = MelpJavaBeans.getDefaultValue(c.jdbcType(), fgs.getType());
if(x!=null){
fgs.setObject(this, x);
}
}
} else {
fgs.setObject(this, v);
}
}
}
entity(false);
return (T) this;
}
/**
*
* @return the database's dialect
*/
public Dialect dialect() {
return mm().dialect;
}
/**
*
* @return all fields
*/
public Collection fields() {
return mm().fields();
}
public List pkFields() {
return mm().getPkFields();
}
/**
*
* @return fields if called set("xxx",value) or setXxx()
*/
public Collection changedFields() {
return holder().changedFields();
}
protected boolean fieldChanged(String fieldJavaName) {
return holder().fieldChanged(fieldJavaName);
}
public FGS field(String name) {
return mm().findFieldByName(name);
}
public boolean updateKey() {
return holder().updateKey;
}
/**
* How to update the model's primary key:
*
* Update update=new Update(model);
* model.updateKey(true); //Set enable update primary key!
* model.setId(newId); //Set new primary key
* model.setXxx ... //Set other fields ...
* update.update("id=?",oldId);
*
*
* @param updateKey updateKey
*
* @return Enable update the model's primary key, default is: false
*/
public T updateKey(boolean updateKey) {
return (T) this;
}
public T set(String name, Object value) {
FGS fgs = field(name);
if (fgs != null) {
fgs.setObject(this, value);
if (fgs.getSetMethod() == null) {
holder().fieldChanged(fgs.getFieldName());
}
} else {
String throwException = DbProp.PROP_TABLE_EXCEPTION_IF_SET_FIELD_NOT_FOUND.getValue(mm().db, mm().tableName);
if ("true".equalsIgnoreCase(throwException)) {
throw new RuntimeException("Field not found: " + name);
}
}
return (T) this;
}
public P get(String name){
FGS fgs = field(name);
if (fgs != null) {
return (P)fgs.getObject(this);
}
return null;
}
public
P get(String name,P defaultValue) {
P p=get(name);
if(p==null){
p=defaultValue;
}
return p;
}
/**
*
* @return table informations
*/
public Table table() {
Table table = mm().table;
if (mm().mp != null) {
table = createTable(mm().mp);
}
return table;
}
protected Table createTable(String tableName,Table modelTable) {
return ModelMeta.createTable(tableName, modelTable);
}
protected Table createTable(String tableName,String ...primaryKeys) {
return ModelMeta.createTable(tableName, primaryKeys);
}
protected Table createTable(MetaPartition mp) {
DBConfig db = db();
Partition> partition = mp.getPartition();
String tableName = partition.getTableName(mp, this);
String tableKey = db.getKey() + ":" + tableName;
Table table = hCachePartitionTables.get(tableKey);
if (table == null) {
String tablePrefix = mp.getTablePrefix();
MetaTable metaTable = DBMetadata.getMetaTable(db.getKey(), tablePrefix);
if (metaTable == null || metaTable.getCreateTable() == null) {
throw new RuntimeException("Fail create table: " + tableName + ", db: " + db.getKey() + ", MetaTable not found: " + tablePrefix);
}
try {
CreateTable createTable = metaTable.getCreateTable().createTable(TableType.PARTITION, tableName);
db.getDialect().createTable(db, createTable);
table = ModelMeta.createTable(tableName, mm().table);
hCachePartitionTables.put(tableKey, table);
} catch (Exception e) {
throw new RuntimeException("Fail create table: " + tableName + ", db: " + db.getKey(), e);
}
}
return table;
}
/**
*
* @return find all auto increase fields, return null if not found.
*/
public FGS autoField() {
return mm().autoField;
}
/**
*
* @return the database
*/
public DBConfig db() {
return $db == null ? mm().db : this.$db;
}
public boolean readonly() {
return holder().readonly;
}
public void readonly(boolean readonly) {
holder().readonly = readonly;
}
/**
*
* @return select fields split by comma OR "*"
*/
public String filterFields() {
return holder().filterFields();
}
/**
* 排除表的某些字段。 用于在查询表时， 过滤掉某些不必要的字段
*
* @param fields 要排除的字段名
*
* @return 模型本身
*/
public T exclude(String... fields) {
holder().exclude(fields);
return (T) this;
}
/**
* 排除大字段（字段长度 大于等于 #Short.MAX_VALUE)
*
* @return 模型本身
*/
public T excludeBlobs() {
holder().excludeBlobs();
return (T) this;
}
/**
* 排除超过指定长度的字段
*
* @param maxLength 字段长度
*
* @return 模型本身
*/
public T excludeBlobs(int maxLength) {
holder().excludeBlobs(maxLength);
return (T) this;
}
/**
* 只提取某些字段
*
* @param fields 需要的字段名称
* @return 模型本身
*/
public T include(String... fields) {
holder().include(fields);
return (T) this;
}
/**
* copy model
*
* @return copy of this model
*/
public T copy() {
return (T) mm().copyModel(this);
}
protected void doValidate() {
mm().doValidate(this);
}
/**
* 校验字段数据的是否合法.
*
* @return 不合法的字段列表{字段名: 错误信息}. 如果没有错误, 则为空列表.
*/
public List validate() {
return mm().validate(this);
}
public List indexes() {
return mm().indexes;
}
public List uniqueIndexes() {
return mm().uniqueIndexes();
}
public ModelListener listener() {
return mm().listener;
}
public String toString() {
return MelpString.toString(this);
}
public String toJson() {
return MelpString.toJson(this);
}
public String toXml() {
return toXml(true, true);
}
public String toXml(boolean withXmlHeader, boolean ignoreNullFields) {
return MelpString.toXml(this, withXmlHeader, ignoreNullFields);
}
public DataMap toMap(boolean usingFieldName){
DataMap m=new DataMap();
Map hs=usingFieldName?mm().hFieldsByJavaName:mm().hFieldsByColumnName;
for (String column:hs.keySet()) {
FGS fgs=hs.get(column);
Object v = fgs.getObject(this);
if (v != null) {
m.put(column,v);
}
}
return m;
}
}