com.tsc9526.monalisa.orm.model.ModelMeta 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 hMonitorMetas=new ConcurrentHashMap();
private static Map hMetas =new ConcurrentHashMap();
public static ModelMeta getModelMeta(Model model){
synchronized(model){
String key=getModelKey(model);
ModelMeta mm=hMetas.get(key);
if(mm==null || mm.iChanged()){
mm=createModelMeta(model,key);
}
return mm;
}
}
private static ModelMeta createModelMeta(Model model,String key){
ModelMeta mm=new ModelMeta(key);
mm.init(model);
if(mm.record){
if(!hMonitorMetas.containsKey(key)){
logger.info("Add dynamic table: "+mm.tableName+", dbkey: "+mm.db.getKey());
}
hMonitorMetas.put(key, mm);
if(!modelReloadRunning){
modelReloadRunning=true;
startReloadModelMetas();
}
}
hMetas.put(key, mm);
return mm;
}
private static void startReloadModelMetas(){
int interval=DbProp.CFG_RELOAD_MODEL_INTERVAL;
if(interval>0){
Tasks.instance.addSchedule("ModelChangeTask", new TimerTask() {
public void run() {
reloadModelMetas();
}
}, interval*1000, interval*1000);
}
}
public synchronized static void reloadModelMetas(){
//check if data source changed
for(ModelMeta mm:hMonitorMetas.values()){
mm.db.getDataSource();
}
for(ModelMeta mm:hMonitorMetas.values()){
mm.checkChanged();
}
}
public synchronized static void clearReloadModelMetas(String dbKey){
List rms=new ArrayList();
for(String key:hMonitorMetas.keySet()){
ModelMeta mm=hMonitorMetas.get(key);
if(dbKey.equals( mm.db.getKey() )){
rms.add(key);
}
}
if(rms.size()>0){
logger.info("Remove dynamic tables: "+rms.toString()+", dbkey: "+dbKey);
for(String key:rms){
hMonitorMetas.remove(key);
hMetas.remove(key);
}
}
}
private static String getModelKey(Model model){
String key=model.getClass().getName();
Class clazz=MelpClass.findClassWithAnnotation(model.getClass(),DB.class);
if(clazz==null){
if(model.$db==null){
throw new RuntimeException("Dynamic model can not found DB, call model.use(DB) first!");
}
Table table=model.getClass().getAnnotation(Table.class);
if(table==null){
if(model.$tableName==null || model.$tableName.trim().length()<1){
throw new RuntimeException("Dynamic model can not found table: "+model.$tableName+", call model(TableName) first!");
}else{
key="#"+model.$db.getKey()+"$"+model.$tableName;
}
}
}else{
Table table=model.getClass().getAnnotation(Table.class);
if(table==null){
if(model.$tableName==null || model.$tableName.trim().length()<1){
throw new RuntimeException("Dynamic model can not found table: "+model.$tableName+", call model(TableName) first!");
}else{
DBConfig db=Model.dsm.getDBConfig(clazz);
key=db.getKey()+"$"+model.$tableName;
}
}
}
return key;
}
protected DBConfig db;
protected Dialect dialect;
protected String tableName = null;
protected String[] primaryKeys = null;
protected Validator validator = null;
protected FGS autoField;
protected Table table;
protected MetaPartition mp;
protected ModelListener listener;
protected List indexes=new ArrayList();
protected Map hFieldsByColumnName=new LinkedHashMap();
protected Map hFieldsByJavaName =new LinkedHashMap();
protected boolean record=false;
protected boolean changed=false;
protected String key;
private ModelMeta(String key){
this.key=key;
}
void init(Model model){
this.tableName =model.$tableName;
this.primaryKeys=model.$primaryKeys;
initDB(model);
initTable(model);
initFields(model);
initIndexes(model);
initListeners(model);
initPartioners(model);
}
protected void initDB(Model model) {
Class clazz=MelpClass.findClassWithAnnotation(model.getClass(),DB.class);
if(clazz!=null){
db=Model.dsm.getDBConfig(clazz);
}else{
db=model.$db;
}
if(db==null){
throw new RuntimeException("Model: "+model.getClass()+" must implement interface annotated by: "+DB.class+", Or call use(db) first!");
}
dialect=Model.dsm.getDialect(db);
}
protected void initTable(Model model) {
table=model.getClass().getAnnotation(Table.class);
if(table==null){
if(tableName==null || tableName.trim().length()==0){
tableName=model.getClass().getSimpleName();
}
table=createTable(tableName,primaryKeys);
}else{
tableName=table.name();
primaryKeys=table.primaryKeys();
}
}
protected void initFields(Model model){
List fields=loadModelFields(model);
List pks=new ArrayList();
for(Object o:fields){
FGS fgs=(FGS)o;
Column c=fgs.getAnnotation(Column.class);
hFieldsByColumnName.put(c.name().toLowerCase(),fgs);
hFieldsByJavaName .put(fgs.getFieldName().toLowerCase(),fgs);
if(c.auto() && autoField==null){
autoField=fgs;
}
if(c.key()){
pks.add(c.name());
}
}
if(primaryKeys==null || primaryKeys.length==0){
primaryKeys=pks.toArray(new String[0]);
}
}
protected void initIndexes(Model model) {
Index[] tbIndexes=table.indexes();
if(tbIndexes!=null && tbIndexes.length>0){
for(Index index:tbIndexes){
ModelIndex mIndex=new ModelIndex();
mIndex.setName(index.name());
mIndex.setType(index.type());
mIndex.setUnique(index.unique());
List fs=new ArrayList();
for(String f:index.fields()){
FGS x=findFieldByName(f);
assert x!=null;
fs.add(x);
}
mIndex.setFields(fs);
mIndex.setPrimary(isPrimary(fs));
if(mIndex.isPrimary()){
indexes.add(0, mIndex);
}else{
indexes.add(mIndex);
}
}
}
}
protected boolean isPrimary(List fs){
String s1 = field2String(fs);
String s2 = field2String(getPkFields());
return s2.length()>0 && s2.equals(s1);
}
private String field2String(List fs){
StringBuilder sb=new StringBuilder();
for(FGS f:fs){
if(sb.length()>0){
sb.append(",");
}
sb.append(f.getFieldName());
}
return sb.toString();
}
protected void initListeners(Model model){
String ls=DbProp.PROP_TABLE_MODEL_LISTENER.getValue(db,tableName);
if(ls==null){
ls=db.getCfg().getModelListener();
}
if(ls!=null && ls.trim().length()>0){
try{
listener=(ModelListener)MelpClass.forName(ls.trim()).newInstance();
}catch(Exception e){
throw new RuntimeException("Invalid model listener class: "+ls.trim()+", "+e,e);
}
}
}
protected void initPartioners(Model model){
mp=db.getCfg().getPartition(table.name());
}
protected List loadModelFields(Model model){
ClassHelper metaClass=MelpClass.getClassHelper(model.getClass());
List fields=metaClass.getFieldsWithAnnotation(Column.class);
if(fields.isEmpty()){
record=true;
fields=loadFieldsFromDB(metaClass);
StringBuilder sb=new StringBuilder();
for(FGS f:fields){
if(sb.length()>0){
sb.append(", ");
}
sb.append(f.getFieldName());
}
logger.info("Load table: "+tableName+"{"+sb.toString()+"}");
}
return fields;
}
public void checkChanged(){
if(mTable!=null && changed==false){
try{
MetaTable t2=TableHelper.getMetaTable(db, tableName);
if(isTableFieldChanged(this.mTable,t2)){
logger.info("Table struct changed: "+tableName);
this.changed=true;
}
}catch(Exception e){
logger.error("Check table: "+tableName+" exception: "+e,e);
}
}
}
private boolean isTableFieldChanged(MetaTable t1,MetaTable t2){
if(t1==null || t2==null){
return false;
}
for(MetaColumn x:t1.getColumns()){
MetaColumn y=t2.getColumn(x.getName());
if(y!=null){
if(x.getJdbcType()!=y.getJdbcType() || x.getLength() !=y.getLength()){
return true;
}
}else{
return true;
}
}
for(MetaColumn x:t2.getColumns()){
MetaColumn y=t1.getColumn(x.getName());
if(y!=null){
if(x.getJdbcType()!=y.getJdbcType() || x.getLength() !=y.getLength()){
return true;
}
}else{
return true;
}
}
return false;
}
private MetaTable mTable;
protected List loadFieldsFromDB(ClassHelper metaClass) {
try{
mTable=TableHelper.getMetaTable(db, tableName);
if(mTable!=null){
List fs=new ArrayList();
for(MetaColumn c:mTable.getColumns()){
FGS mfd=metaClass.getField(c.getJavaName());
if(mfd==null){
mfd=metaClass.getField(c.getName());
}
FGS fgs=createFGS(c,mfd);
fs.add(fgs);
}
this.table=createTable(tableName,mTable);
return fs;
}else{
throw new RuntimeException("Table not found: "+tableName+", DB: "+db.getKey());
}
}catch(SQLException e){
throw new RuntimeException(e);
}
}
public FGS findFieldByName(String theFieldName){
if(theFieldName == null){
return null;
}
String name=theFieldName.trim().toLowerCase();
name=Dialect.getRealname(name);
FGS fgs=hFieldsByColumnName.get(name);
if(fgs==null){
fgs=hFieldsByJavaName.get(name);
}
return fgs;
}
public Collection fields(){
return hFieldsByColumnName.values();
}
public List getPkFields(){
List pks=new ArrayList();
for(Object o:fields()){
FGS fgs=(FGS)o;
Column c=fgs.getAnnotation(Column.class);
if(c.key()){
pks.add(fgs);
}
}
return pks;
}
/**
* 复制对象数据
* @param model model to copy
* @return copy of the model
*/
public Model copyModel(Model model){
try{
Model x=model.shallow();
ModelHolder f=model.holder();
ModelHolder t=x.holder();
t.updateKey = model.holder().updateKey;
t.readonly = model.holder().readonly;
t.dirty = model.holder().dirty;
t.entity = model.holder().entity;
t.fieldFilterExcludeMode=model.holder().fieldFilterExcludeMode;
t.fieldFilterSets.addAll(model.holder().fieldFilterSets);
if(f.hModelValues!=null){
t.getModelValues().putAll(f.hModelValues);
}
for(FGS fgs:model.fields()){
Object value=fgs.getObject(model);
fgs.setObject(x, value);
}
return x;
}catch(Exception e){
throw new RuntimeException(e);
}
}
protected void doValidate(Model model) {
String validate=DbProp.PROP_TABLE_VALIDATE.getValue(db,tableName);
if(validate.equalsIgnoreCase("true") || validate.equals("1")){
List errors=validate(model);
if(errors.size()>0){
throw new RuntimeException(errors.toString());
}
}
}
/**
* 校验字段数据的是否合法.
*
* @param model model for validate
* @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(Model model){
if(validator==null){
String clazz=DbProp.PROP_TABLE_VALIDATOR.getValue(db,tableName);
if(MelpString.isEmpty(clazz)){
validator=new Validator();
}else{
try{
validator=(Validator)MelpClass.forName(clazz.trim()).newInstance();
}catch(Exception e){
throw new RuntimeException(e);
}
}
}
return validator.validate(model);
}
public List uniqueIndexes(){
List unique=new ArrayList();
for(ModelIndex index:indexes){
if(index.isUnique()){
unique.add(index);
}
}
return unique;
}
boolean iChanged(){
return changed;
}
protected static FGS createFGS(final MetaColumn c,final FGS mfd){
return new FGS(mfd==null?null:mfd.getType(),c.getJavaName(),c.getName()){
private Column columnAnnotation;
@Override
public void setObject(Object bean,Object v){
if(mfd!=null){
mfd.setObject(bean, v);
}else{
if(bean instanceof Model){
Model m=(Model)bean;
if(Date.class.getName().equals(c.getJavaType())){
v=MelpClass.converter.convert(v, Date.class);
}else{
try{
String jtype=c.getJavaType();
if(jtype.indexOf(".")<0){
jtype="java.lang."+jtype;
}
v=MelpClass.converter.convert(v, Class.forName(jtype));
}catch(ClassNotFoundException e){
throw new RuntimeException("Convert: "+v+" to class exception: "+c.getJavaType(),e);
}
}
m.holder().set(c.getName(), v);
}
}
}
@Override
public Object getObject(Object bean){
if(mfd!=null){
return mfd.getObject(bean);
}else{
if(bean instanceof Model){
Model m=(Model)bean;
return m.holder().get(c.getName());
}else{
return null;
}
}
}
@Override
public Field getField(){
return mfd==null?null:mfd.getField();
}
@Override
@SuppressWarnings("unchecked")
public T getAnnotation(Class annotationClass) {
if(annotationClass==Column.class){
if(columnAnnotation==null){
columnAnnotation=createColumn(c);
}
return (T)columnAnnotation;
}else{
return null;
}
}
};
}
protected static Column createColumn(final MetaColumn c){
return new Column(){
public Class annotationType() {
return Column.class;
}
public String value() {
return c.getValue();
}
public String table() {
return c.getTable().getName();
}
public String remarks() {
return c.getRemarks();
}
public boolean notnull() {
return c.isNotnull();
}
public String name() {
return c.getName();
}
public int length() {
return c.getLength();
}
public boolean key() {
return c.isKey();
}
public int jdbcType() {
return c.getJdbcType();
}
public boolean auto() {
return c.isAuto();
}
public String seq() {
return c.getSeq();
}
public int decimalDigits(){
return c.getDecimalDigits();
}
};
}
public static Table createTable(final String tableName,final MetaTable metaTable){
return new Table(){
public String name() {
return tableName;
}
public String value() {
return tableName;
}
public String remarks() {
return metaTable.getRemarks();
}
public String[] primaryKeys(){
List pks=new ArrayList();
for(MetaColumn c:metaTable.getKeyColumns()){
pks.add(c.getName());
}
return pks.toArray(new String[0]);
}
public Index[] indexes(){
List indexes=new ArrayList();
for(MetaIndex index:metaTable.getIndexes()){
indexes.add(index.toIndexAnnotation());
}
return indexes.toArray(new Index[0]);
}
public Class annotationType() {
return Table.class;
}
};
}
public static Table createTable(final String tableName,final Table modelTable){
return new Table(){
public String name() {
return tableName;
}
public String value() {
return tableName;
}
public String remarks() {
return modelTable.remarks();
}
public String[] primaryKeys(){
return modelTable.primaryKeys();
}
public Index[] indexes(){
return modelTable.indexes();
}
public Class annotationType() {
return Table.class;
}
};
}
public static Table createTable(final String tableName,final String ...primaryKeys){
return new Table(){
public Class annotationType() {
return Table.class;
}
public String value() {
return tableName;
}
public String name() {
return tableName;
}
public String remarks() {
return "";
}
public String[] primaryKeys() {
return primaryKeys;
}
public Index[] indexes() {
return new Index[0];
}
};
}
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