/** 一对多级联更新 */
public void update(long newIdVal) {
if (newIdVal <= 0 || this.fields == null || this.fields.size() == 0) return;
if (this.idVal == null || "0".equals(this.idVal) || "".equals(this.idVal)) {
return;
} else if (DAOFactory.getSelectDAO(dsName).selectOne(t, this.idField) == null) {
// 检查一下当前对象的ID是否存在于数据库
return;
}
// "update {table} set {idCol} = {newIdVal} where {idCol} = {idVal}
// ; update {relTable} set {fromCol} = {newIdVal} where {fromCol} = {idVal}"
String format = "update %s set %s = %s where %s = %s ;";
for (Field f : fields) {
Method tarGetter = ru.getGetter(f.getName());
if (tarGetter == null) continue;
ManyToMany ann = tarGetter.getAnnotation(ManyToMany.class);
if (ann == null) {
ann = f.getAnnotation(ManyToMany.class);
if (ann == null) continue;
}
JoinTable join = tarGetter.getAnnotation(JoinTable.class);
if (join == null) {
join = f.getAnnotation(JoinTable.class);
if (join == null) continue;
}
JoinColumn[] froms = join.joinColumns();
if (froms == null || froms.length == 0) continue;
// 第三方关系表
String relTable = join.name();
// 主类在第三方关系表中的字段名
String from = froms[0].name();
try {
// "update {table} set {idCol} = {newIdVal} where {idCol} = {idVal}
// ; update {relTable} set {fromCol} = {newIdVal} where {fromCol} = {idVal}"
final String sql1 = String.format(format, table, idColumn, newIdVal, idColumn, idVal);
final String sql2 = String.format(format, relTable, from, newIdVal, from, idVal);
Transaction.execute(
new Trans() {
@Override
public void run(Object... args) throws Exception {
DAOFactory.getUpdateDAO(dsName).updateBySQL(sql1);
DAOFactory.getUpdateDAO(dsName).updateBySQL(sql2);
}
});
} catch (Exception e) {
throw new DAOException("", e);
}
}
}
/**
* 多对多级联查询 1.当主对象没有包含任何一个关联对象时，默认查询所有与之关联的对象 2.当主对象中包含了关联对象时（含有其id值），则只查询这些关联的对象
*
* @param <T>
* @throws InvocationTargetException
* @throws IllegalAccessException
* @throws IllegalArgumentException
*/
public void select() throws DAOException {
if (this.fields == null || this.fields.size() == 0) return;
// select %s from {tarTable} where {referencedColumn} in (select {to} from {relTable} where
// {from} = {idVal})
String format = "SELECT %s FROM %s WHERE %s IN (SELECT %s FROM %s WHERE %s = ?) ";
if (idVal == null || "0".equals(idVal) || "".equals(idVal)) return;
for (Field f : fields) {
Method tarGetter = ru.getGetter(f.getName());
if (tarGetter == null) continue;
ManyToMany ann = tarGetter.getAnnotation(ManyToMany.class);
if (ann == null) {
ann = f.getAnnotation(ManyToMany.class);
if (ann == null) continue;
}
JoinTable join = tarGetter.getAnnotation(JoinTable.class);
if (join == null) {
join = f.getAnnotation(JoinTable.class);
if (join == null) continue;
}
JoinColumn[] froms = join.joinColumns();
if (froms == null || froms.length == 0) continue;
JoinColumn[] tos = join.inverseJoinColumns();
if (tos == null || tos.length == 0) continue;
// 多对多关系目标Class
Class<?> tarClass = ann.targetEntity();
if (void.class.isAssignableFrom(tarClass)) {
tarClass = ClassUtil.getGenericType(f);
}
String tarTable = ORMConfigBeanUtil.getTable(tarClass, true);
// 目标类对应的数据库表Id字段
String referencedColumn = tos[0].referencedColumnName();
if (referencedColumn == null || referencedColumn.trim().length() == 0)
referencedColumn = ORMConfigBeanUtil.getIdColumn(tarClass);
// 目标类在第三方关系表中的字段名
String to = tos[0].name();
// 第三方关系表
String relTable = join.name();
// 主类在第三方关系表中的字段名
String from = froms[0].name();
try {
List<?> tarList = null;
tarList = (List<?>) tarGetter.invoke(t);
if (tarList != null && tarList.size() > 0) {
for (int i = 0; i < tarList.size(); i++) {
Object tarObj = tarList.get(i);
ReflectUtil tarRu = new ReflectUtil(tarObj);
String tarIdField = ORMConfigBeanUtil.getIdField(tarClass);
Method tarIdGetter = tarRu.getGetter(tarIdField);
Object tarIdValObj = tarIdGetter.invoke(tarObj);
if (tarIdValObj == null) continue;
String tarIdVal = String.valueOf(tarIdValObj);
// 查询 select %s from {tarTable} where {tarIdColumn} = {tarIdVal}
tarObj =
DAOFactory.getSelectDAO(dsName)
.selectOne(tarClass, new String[] {tarIdField}, new String[] {tarIdVal});
}
} else {
String sql =
String.format(
format,
ORMConfigBeanUtil.getSelectAllColumn(tarClass),
tarTable,
referencedColumn,
to,
relTable,
from);
// 从数据库中取出与当前主对象id关联的所有目标对象，
tarList = DAOFactory.getSelectDAO(dsName).selectBySQL(tarClass, sql, idVal);
}
// 并注入到当前主对象的属性中
Method tarSetter = ru.getSetter(f.getName());
tarSetter.invoke(t, tarList);
} catch (Exception e) {
e.printStackTrace();
throw new DAOException("", e);
}
}
}
/** 多对一级联查询 1.获取当前idVal，然后作为条件查询出其外键值，接着通过其外键值查出主对象数据，注入到当前 */
public void select() {
if (this.fields == null || this.fields.size() == 0) return;
if (idVal == null || "0".equals(idVal) || "".equals(idVal)) {
return;
}
// else if (DAOFactory.getSelectDAO(dsName).selectOne(t, this.idField) == null) {
// // 检查一下当前对象的ID是否存在于数据库
// return;
// }
for (Field f : fields) {
Method tarGetter = ru.getGetter(f.getName());
if (tarGetter == null) continue;
String fk = null;
OneToOne ann = tarGetter.getAnnotation(OneToOne.class);
if (ann == null) ann = f.getAnnotation(OneToOne.class);
if (ann == null) {
ManyToOne moAn = tarGetter.getAnnotation(ManyToOne.class);
if (moAn == null) moAn = f.getAnnotation(ManyToOne.class);
if (moAn == null) continue;
}
String refCol = null;
JoinColumn joinCol = f.getAnnotation(JoinColumn.class);
if (joinCol == null) joinCol = tarGetter.getAnnotation(JoinColumn.class);
if (joinCol == null) fk = f.getName() + "_id";
else {
fk = joinCol.name();
refCol = joinCol.referencedColumnName();
}
Class<?> tarClass = f.getType();
if (refCol == null || refCol.trim().length() == 0)
refCol = ORMConfigBeanUtil.getIdColumn(tarClass);
String refField = ORMConfigBeanUtil.getField(tarClass, refCol);
try {
Object _tarObj = tarGetter.invoke(t);
Object tarObj = null;
boolean flag = false;
if (_tarObj != null) {
Method refFieldGetter = new ReflectUtil(_tarObj).getGetter(refField);
if (refFieldGetter != null && refFieldGetter.invoke(_tarObj) != null)
tarObj = DAOFactory.getSelectDAO(dsName).selectOne(_tarObj, refField);
else flag = true;
} else flag = true;
if (flag) {
// select * from {tarTable} where {referencedColumn} = (select {fk} from {table} where
// {idColumn} = {idVal})
String format = "select %s from %s where %s = (select %s from %s where %s = %s )";
String tarTable = ORMConfigBeanUtil.getTable(tarClass, true);
String sql =
String.format(
format,
ORMConfigBeanUtil.getSelectAllColumn(tarClass),
tarTable,
refCol,
fk,
table,
idColumn,
idVal);
List<?> tarList = DAOFactory.getSelectDAO(dsName).selectBySQL(tarClass, sql);
if (tarList == null || tarList.size() == 0) continue;
tarObj = tarList.get(0);
}
if (tarObj == null) continue;
Method tarSetter = ru.getSetter(f.getName());
tarSetter.invoke(t, tarObj);
} catch (Exception e) {
throw new DAOException("", e);
}
}
}
/**
* 多对多级联删除 1.如果主对象不存在与数据库，不处理 2.否则，检查当前主对象中的关联对象，如果关联对象为空，则删除所有与主对象有关的关联关系。
* 3.如果当前主对象中含有关联对象，则删除这些关联对象与主对象的关系 4.不会删除主对象
*/
public void delete() throws DAOException {
if (this.fields == null || this.fields.size() == 0) return;
// "delete from {relTable} WHERE {from} = {idVal} ;"
String format = "delete from %s WHERE %s = ? ";
if (idVal == null || "0".equals(idVal) || "".equals(idVal)) return;
else if (DAOFactory.getSelectDAO(dsName).selectOne(t, this.idField) == null) return;
for (Field f : fields) {
Method tarGetter = ru.getGetter(f.getName());
if (tarGetter == null) continue;
ManyToMany ann = tarGetter.getAnnotation(ManyToMany.class);
if (ann == null) {
ann = f.getAnnotation(ManyToMany.class);
if (ann == null) continue;
}
JoinTable join = tarGetter.getAnnotation(JoinTable.class);
if (join == null) {
join = f.getAnnotation(JoinTable.class);
if (join == null) continue;
}
JoinColumn[] froms = join.joinColumns();
if (froms == null || froms.length == 0) continue;
JoinColumn[] tos = join.inverseJoinColumns();
if (tos == null || tos.length == 0) continue;
String relTable = join.name();
String from = froms[0].name();
List<?> tarList = null;
try {
tarList = (List<?>) tarGetter.invoke(t);
} catch (Exception e) {
throw new DAOException(tarGetter + " invoke exception ", e);
}
if (tarList == null || tarList.size() == 0) {
String sql = String.format(format, relTable, from);
// 删除所有关联记录
DAOFactory.getUpdateDAO(dsName).updateBySQLWithArgs(sql, idVal);
} else {
// 删除指定关联的记录
String to = tos[0].name();
Class<?> tarClass = ann.targetEntity();
if (void.class.isAssignableFrom(tarClass)) {
tarClass = ClassUtil.getGenericType(f);
}
// "delete from {relTable} where {from} = {idVal} and to = {toVal}"
String _format = "delete from %s where %s = ? and %s = ?";
for (int i = 0; i < tarList.size(); i++) {
Object tarObj = tarList.get(i);
if (tarObj == null) continue;
ReflectUtil tarRu = new ReflectUtil(tarObj);
String tarIdField = ORMConfigBeanUtil.getIdField(tarClass);
Method tarIdGetter = tarRu.getGetter(tarIdField);
Object toValObj = null;
try {
toValObj = tarIdGetter.invoke(tarObj);
} catch (Exception e) {
throw new DAOException(tarIdGetter + "invoke exception ", e);
}
if (toValObj == null) continue;
String toVal = String.valueOf(toValObj);
if (DAOFactory.getSelectDAO(dsName)
.selectOne(tarClass, new String[] {tarIdField}, new String[] {toVal})
== null) continue;
String _sql = String.format(_format, relTable, from, to);
DAOFactory.getUpdateDAO(dsName).updateBySQLWithArgs(_sql, idVal, toVal);
}
}
}
}
private Object[] assemParams(Class<?>[] paramTypes, Annotation[][] paramAnns) throws Exception {
Object[] params = new Object[paramTypes.length];
int pathParamIndex = 0;
for (int i = 0; i < paramTypes.length; ++i) {
Annotation[] anns = paramAnns[i];
Class<?> paramClass = paramTypes[i];
String[] paramValue = null;
// ------------------------------------------------------
// 通过给定class 获取对应的ActionContextObj
if (Context.class.isAssignableFrom(paramClass)) {
params[i] = this.context;
continue;
}
if (HttpServletRequest.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getRequest();
continue;
}
if (HttpServletResponse.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getResponse();
continue;
}
if (PrintWriter.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getWriter();
continue;
}
if (ServletOutputStream.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getOut();
continue;
}
if (HttpSession.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getSession();
continue;
}
if (ActionProp.class.isAssignableFrom(paramClass)) {
if (this.context.getActionProp() == null)
this.context.setActionProp(new ActionProp(this.actionObject.getClass().getName()));
params[i] = this.context.getActionProp();
continue;
}
if (Validation.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getValidation();
continue;
}
if (QueryParams.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getQueryParams();
continue;
}
if (DAO.class.isAssignableFrom(paramClass)) {
params[i] = new DAOImpl("");
continue;
}
if (InsertDAO.class.isAssignableFrom(paramClass)) {
params[i] = DAOFactory.getInsertDAO();
continue;
}
if (DeleteDAO.class.isAssignableFrom(paramClass)) {
params[i] = DAOFactory.getDeleteDAO();
continue;
}
if (UpdateDAO.class.isAssignableFrom(paramClass)) {
params[i] = DAOFactory.getUpdateDAO();
continue;
}
if (SelectDAO.class.isAssignableFrom(paramClass)) {
params[i] = DAOFactory.getSelectDAO();
continue;
}
if (DivPageDAO.class.isAssignableFrom(paramClass)) {
params[i] = DAOFactory.getDivPageDAO();
continue;
}
if (SearchDAO.class.isAssignableFrom(paramClass)) {
params[i] = DAOFactory.getSearchDAO();
continue;
}
if (CascadeDAO.class.isAssignableFrom(paramClass)) {
params[i] = DAOFactory.getCascadeDAO();
continue;
}
PathParam pathParamAnn = this.getPathParamAnn(anns);
if (pathParamAnn != null) {
paramValue = this.getPathParamValue(pathParamAnn.value());
params[i] = ClassUtil.getParamVal(paramClass, paramValue[0]);
continue;
}
QueryParam queryParamAnn = this.getQueryParamAnn(anns);
// 视图模型
if (queryParamAnn == null && Map.class.isAssignableFrom(paramClass)) {
params[i] = this.context.getModel();
continue;
}
if (queryParamAnn != null) {
final String fieldName = queryParamAnn.value();
if (File.class.isAssignableFrom(paramClass)) {
if (!this.context.getUploadMap().containsKey(fieldName)) continue;
List<UploadFile> list = this.context.getUploadMap().get(fieldName);
if (list == null || list.isEmpty()) continue;
UploadFile uploadFile = list.get(0);
File file = uploadFile.getTmpFile();
params[i] = file;
continue;
}
if (File[].class.isAssignableFrom(paramClass)) {
if (!this.context.getUploadMap().containsKey(fieldName)) continue;
List<UploadFile> list = this.context.getUploadMap().get(fieldName);
if (list == null || list.isEmpty()) continue;
File[] files = new File[list.size()];
for (int j = 0; j < files.length; j++) files[j] = list.get(j).getTmpFile();
params[i] = files;
}
if (UploadFile.class.isAssignableFrom(paramClass)) {
if (!this.context.getUploadMap().containsKey(fieldName)) continue;
List<UploadFile> list = this.context.getUploadMap().get(fieldName);
if (list == null || list.isEmpty()) continue;
UploadFile uploadFile = list.get(0);
params[i] = uploadFile;
continue;
}
if (UploadFile[].class.isAssignableFrom(paramClass)) {
if (!this.context.getUploadMap().containsKey(fieldName)) continue;
List<UploadFile> list = this.context.getUploadMap().get(fieldName);
if (list == null || list.isEmpty()) continue;
params[i] = list.toArray(new UploadFile[] {});
}
String defaultValue = null;
DefaultValue defaultValueAnn = this.getDefaultValueAnn(anns);
if (defaultValueAnn != null) defaultValue = defaultValueAnn.value();
paramValue = this.getQueryParamValue(fieldName, defaultValue);
if (java.util.Date.class.isAssignableFrom(paramClass)) {
params[i] = this.getDateParam(anns, paramValue[0]);
continue;
}
String startName = fieldName;
if (ClassUtil.isPojo(paramClass)) {
params[i] = this.injectParam2Pojo(paramClass, startName);
continue;
}
if (Map.class.isAssignableFrom(paramClass)) {
params[i] = this.injectParam2Map(startName);
continue;
}
if (paramClass.isArray()) params[i] = ClassUtil.getParamVals(paramClass, paramValue);
else params[i] = ClassUtil.getParamVal(paramClass, paramValue[0]);
} else {
// 如果是基本数据类型，则按照排序进行注入
String[] pathParams = this.context.getActionConfigBean().getPathParams();
if (pathParams == null) {
log.warn("QueryParam not found and PathParam not found too");
continue;
}
paramValue = this.getPathParamValue(pathParams[pathParamIndex]);
params[i] = ClassUtil.getParamVal(paramClass, paramValue[0]);
pathParamIndex++;
continue;
}
}
return params;
}