cn.dreampie.orm.Base Maven / Gradle / Ivy
package cn.dreampie.orm;
import cn.dreampie.common.Constant;
import cn.dreampie.common.entity.Entity;
import cn.dreampie.common.entity.exception.EntityException;
import cn.dreampie.common.util.Joiner;
import cn.dreampie.log.Logger;
import cn.dreampie.orm.cache.QueryCache;
import cn.dreampie.orm.callable.ObjectCall;
import cn.dreampie.orm.callable.ResultSetCall;
import cn.dreampie.orm.dialect.Dialect;
import cn.dreampie.orm.exception.DBException;
import cn.dreampie.orm.generate.Generator;
import cn.dreampie.orm.page.FullPage;
import cn.dreampie.orm.page.Page;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.sql.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import static cn.dreampie.common.util.Checker.checkArgument;
import static cn.dreampie.common.util.Checker.checkNotNull;
/**
* Created by wangrenhui on 15/3/31.
*/
public abstract class Base extends Entity implements Externalizable {
public static final String DEFAULT_GENERATED_KEY = "id";
private static final boolean devMode = Constant.devMode;
private final Logger logger = Logger.getLogger(getClass());
private String alias;
/**
* 获取实际的数据操作对象
*
* @return class
*/
protected Class getMClass() {
Class clazz = getClass();
Type[] actualTypeArguments = ((ParameterizedType) clazz.getGenericSuperclass()).getActualTypeArguments();
if (actualTypeArguments.length > 0) {
return (Class) actualTypeArguments[0];
} else {
return (Class) clazz;
}
}
/**
* 获取当前实例数据表的元数据
*
* @return TableMeta
*/
protected abstract TableMeta getTableMeta();
/**
* 判断是否是表的属性
*
* @param attr 属性名
* @return
*/
public boolean hasColumn(String attr) {
return getTableMeta().hasColumn(attr);
}
/**
* 获取改数据库列对应的java类型
*
* @param attr 属性名
* @return class
*/
public Class getColumnType(String attr) {
return getDialect().getColumnType(getTableMeta().getDataType(attr));
}
/**
* 获取数据源元数据
*
* @return DataSourceMeta
*/
protected DataSourceMeta getDataSourceMeta() {
return Metadata.getDataSourceMeta(getTableMeta().getDsName());
}
/**
* 获取数据库方言
*
* @return Dialect
*/
protected Dialect getDialect() {
return getDataSourceMeta().getDialect();
}
/**
* 是否使用cache
*
* @return boolean
*/
protected abstract boolean isUseCache();
/**
* 本次不使用缓存
*
* @return Model
*/
public abstract M unCache();
/**
* 切换数据源
*
* @param useDS 数据源名称
* @return Model
*/
public abstract M useDS(String useDS);
/**
* 表的别名
*
* @return String
*/
public String getAlias() {
return alias;
}
/**
* 表的别名
*
* @param alias 别名
* @return model
*/
public M setAlias(String alias) {
if (this.alias != null)
throw new EntityException("Model alias only set once.");
this.alias = alias;
return (M) this;
}
/**
* 从缓存中读取数据
*
* @param sql sql语句
* @param params sql参数
* @param 返回的数据类型
* @return T
*/
protected T getCache(String sql, Object[] params) {
TableMeta tableMeta = getTableMeta();
if (tableMeta.isCached()) {
return (T) QueryCache.instance().get(tableMeta.getDsName(), tableMeta.getTableName(), getMClass().getSimpleName(), sql, params);
}
return null;
}
/**
* 添加到缓存
*
* @param sql sql语句
* @param params sql参数
* @param cache 要缓存的数据
*/
protected void addCache(String sql, Object[] params, Object cache) {
TableMeta tableMeta = getTableMeta();
if (tableMeta.isCached()) {
QueryCache.instance().add(tableMeta.getDsName(), tableMeta.getTableName(), getMClass().getSimpleName(), sql, params, cache, tableMeta.getExpired());
}
}
/**
* 清除缓存 通过数据源名称＋表名称
*/
public void purgeCache() {
TableMeta tableMeta = getTableMeta();
if (tableMeta.isCached()) {
QueryCache.instance().purge(tableMeta.getDsName(), tableMeta.getTableName());
}
}
/**
* 删除指定sql＋params的缓存
*
* @param sql sql语句
* @param params sql参数
*/
protected void removeCache(String sql, Object[] params) {
TableMeta tableMeta = getTableMeta();
if (tableMeta.isCached()) {
QueryCache.instance().remove(tableMeta.getDsName(), tableMeta.getTableName(), getMClass().getSimpleName(), sql, params);
}
}
/**
* Check the table name. The table name must in sql.
*/
protected void checkTableName(String tableName, String sql) {
if (!sql.toLowerCase().contains(tableName.toLowerCase()))
throw new DBException("The table name: " + tableName + " not in your sql.");
}
/**
* sql语句
*
* @param sql sql
* @param params 参数
*/
private void logSql(String sql, Object[][] params) {
if (getDataSourceMeta().isShowSql() && logger.isInfoEnabled()) {
StringBuilder log = new StringBuilder("Sql: {").append(sql).append("} ");
if (params != null && params.length > 0) {
int i = 0;
for (Object[] para : params) {
log.append(", params[").append(i++).append("]: ").append('{');
log.append(Joiner.on("}, {").useForNull("null").join(para));
log.append('}');
}
}
log.append('\n');
logger.info(log.toString());
}
}
/**
* sql 语句
*
* @param sql sql
* @param params 参数
*/
private void logSql(String sql, Object[] params) {
if (getDataSourceMeta().isShowSql() && logger.isInfoEnabled()) {
StringBuilder log = new StringBuilder("Sql: {").append(sql).append("} ");
if (params != null && params.length > 0) {
log.append(", params: ").append('{');
log.append(Joiner.on("}, {").useForNull("null").join(params));
log.append('}');
}
logger.info(log.toString());
}
}
/**
* sql 语句
*
* @param sqls sqls
*/
private void logSql(List sqls) {
if (getDataSourceMeta().isShowSql() && logger.isInfoEnabled()) {
logger.info("Sqls: " + '{' + Joiner.on("}, {").useForNull("null").join(sqls) + '}');
}
}
/**
* sql连接对象
*
* @return Connection
* @throws SQLException
*/
private Connection getConnection(DataSourceMeta dataSourceMeta) throws SQLException {
dataSourceMeta.beginTransaction();
return dataSourceMeta.getConnection();
}
/**
* 获取sql执行对象
*
* @param conn
* @param tableMeta
* @param sql
* @param params
* @return
* @throws SQLException
*/
private PreparedStatement getPreparedStatement(Connection conn, TableMeta tableMeta, String sql, Object[] params) throws SQLException {
//打印sql语句
logSql(sql, params);
PreparedStatement pst;
//如果没有自动生成的主键 则不获取
String generatedKey = tableMeta.getGeneratedKey();
boolean generated = tableMeta.isGenerated();
if (!generatedKey.isEmpty() && !generated) {
pst = conn.prepareStatement(sql, new String[]{generatedKey});
} else {
pst = conn.prepareStatement(sql);
}
for (int i = 0; i < params.length; i++) {
pst.setObject(i + 1, params[i]);
}
return pst;
}
/**
* 获取sql执行对象
*
* @param conn
* @param tableMeta
* @param sql
* @param params
* @return
* @throws SQLException
*/
private PreparedStatement getPreparedStatement(Connection conn, TableMeta tableMeta, String sql, Object[][] params) throws SQLException {
//打印sql语句
logSql(sql, params);
PreparedStatement pst = null;
//如果没有自动生成的主键 则不获取
String generatedKey = tableMeta.getGeneratedKey();
boolean generated = tableMeta.isGenerated();
if (!generatedKey.isEmpty() && !generated) {
String[] returnKeys = new String[params.length];
for (int i = 0; i < params.length; i++) {
returnKeys[i] = generatedKey;
}
pst = conn.prepareStatement(sql, returnKeys);
} else {
pst = conn.prepareStatement(sql);
}
final int batchSize = 1000;
int count = 0;
for (Object[] para : params) {
for (int j = 0; j < para.length; j++) {
pst.setObject(j + 1, para[j]);
}
pst.addBatch();
if (++count % batchSize == 0) {
pst.executeBatch();
}
}
return pst;
}
/**
* 获取sql执行对象
*
* @param conn
* @param sqls
* @return
* @throws SQLException
*/
private Statement getPreparedStatement(Connection conn, List sqls) throws SQLException {
//打印sql语句
logSql(sqls);
Statement stmt = null;
stmt = conn.createStatement();
final int batchSize = 1000;
int count = 0;
for (String aSql : sqls) {
stmt.addBatch(aSql);
if (++count % batchSize == 0) {
stmt.executeBatch();
}
}
return stmt;
}
/**
* 获取主键
*
* @param tableMeta
* @return
*/
private String getPrimaryKey(TableMeta tableMeta) {
String generatedKey = tableMeta.getGeneratedKey();
if (generatedKey.isEmpty()) {
String[] primaryKeys = getPrimaryKeys(tableMeta);
if (primaryKeys.length > 0) {
generatedKey = primaryKeys[0];
} else {
throw new IllegalArgumentException("Your table must have least one generatedKey or primaryKey.");
}
}
return generatedKey;
}
/**
* 获取所有的主键key
*
* @return
*/
private String[] getPrimaryKeys(TableMeta tableMeta) {
String generatedKey = tableMeta.getGeneratedKey();
String[] primaryKey = tableMeta.getPrimaryKey();
String[] keys;
boolean generated = tableMeta.isGenerated();
int i = 0;
if (!generatedKey.isEmpty() && !generated) {
keys = new String[primaryKey.length + 1];
keys[i++] = generatedKey;
} else {
keys = new String[primaryKey.length];
}
for (String pKey : primaryKey) {
keys[i++] = pKey;
}
if (keys.length <= 0) {
throw new IllegalArgumentException("Your table must have least one generatedKey or primaryKey.");
}
return keys;
}
/**
* 获取所有的主键值
*
* @return
*/
private Object[] getPrimaryValues(TableMeta tableMeta) {
Map attrs = getAttrs();
String generatedKey = tableMeta.getGeneratedKey();
boolean generated = tableMeta.isGenerated();
Object id = null;
if (!generatedKey.isEmpty() && !generated) {
id = attrs.get(generatedKey);
checkNotNull(id, "You can't delete model without generatedKey " + generatedKey + ".");
}
String[] primaryKeys = tableMeta.getPrimaryKey();
Object[] values;
int i = 0;
if (!generatedKey.isEmpty() && !generated) {
values = new Object[primaryKeys.length + 1];
values[i++] = id;
} else {
values = new Object[primaryKeys.length];
}
for (String pKey : primaryKeys) {
values[i++] = attrs.get(pKey);
}
if (values.length <= 0) {
throw new IllegalArgumentException("Your must set generatedKey or primaryKey.");
}
return values;
}
/**
* Get id after save method.
*/
protected void setGeneratedKey(PreparedStatement pst, TableMeta tableMeta) throws SQLException {
String generatedKey = tableMeta.getGeneratedKey();
if (!generatedKey.isEmpty()) {
boolean generated = tableMeta.isGenerated();
if (!generated) {
if (get(generatedKey) == null) {
ResultSet rs = pst.getGeneratedKeys();
if (rs.next()) {
set(generatedKey, rs.getObject(1)); // It returns Long object for int colType
rs.close();
}
}
}
}
}
/**
* 获取主键
*/
protected void setGeneratedKey(PreparedStatement pst, TableMeta tableMeta, List models) throws SQLException {
String generatedKey = tableMeta.getGeneratedKey();
if (!generatedKey.isEmpty()) {
boolean generated = tableMeta.isGenerated();
if (!generated) {
ResultSet rs = pst.getGeneratedKeys();
for (Entity model : models) {
if (model.get(generatedKey) == null) {
if (rs.next()) {
model.set(generatedKey, rs.getObject(1));
}
}
}
rs.close();
}
}
}
/**
* Find model.
*
* @param sql an SQL statement that may contain one or more '?' IN parameter placeholders
* @param params the parameters of sql
* @return the list of Model
*/
public List find(String sql, Object... params) {
List result = null;
boolean cached = false;
boolean useCache = isUseCache();
TableMeta tableMeta = getTableMeta();
if (useCache) {
cached = tableMeta.isCached();
//hit cache
if (cached) {
result = getCache(sql, params);
}
if (result != null) {
return result;
}
} else {
logger.debug("This query not use cache.");
}
if (devMode)
checkTableName(tableMeta.getTableName(), sql);
DataSourceMeta dsm = getDataSourceMeta();
Connection conn = null;
PreparedStatement pst = null;
ResultSet rs = null;
try {
conn = getConnection(dsm);
pst = getPreparedStatement(conn, tableMeta, sql, params);
rs = pst.executeQuery();
result = BaseBuilder.build(rs, getMClass(), dsm, tableMeta);
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} catch (InstantiationException e) {
throw new EntityException(e.getMessage(), e);
} catch (IllegalAccessException e) {
throw new EntityException(e.getMessage(), e);
} finally {
dsm.close(rs, pst, conn);
}
//add cache
if (cached) {
addCache(sql, params, result);
}
return result;
}
/**
* Find first model. I recommend add "limit 1" in your sql.
*
* @param sql an SQL statement that may contain one or more '?' IN parameter placeholders
* @param params the parameters of sql
* @return Model
*/
public M findFirst(String sql, Object... params) {
TableMeta tableMeta = getTableMeta();
List result = find(tableMeta.getDialect().paginateWith(1, 1, sql), params);
return result.size() > 0 ? result.get(0) : null;
}
/**
* Find model by id.
*
* @param id the id value of the model
*/
public M findById(Object id) {
return findColsById("*", id);
}
/**
* Find model by multi id
*
* @param ids
* @return
*/
public M findByIds(Object... ids) {
return findColsByIds("*", ids);
}
/**
* Find model by ids
*
* @param ids
* @return
*/
public List findInIds(Object... ids) {
return findColsInIds("*", ids);
}
/**
* Find model by id. Fetch the specific columns only.
* Example: User user = User.dao.findById(15, "name, age");
*
* @param columns the specific columns
* @param id the id value of the model
*/
public M findColsById(String columns, Object id) {
TableMeta tableMeta = getTableMeta();
String key = getPrimaryKey(tableMeta);
Dialect dialect = getDialect();
String sql = dialect.select(tableMeta.getTableName(), "", key + "=?", columns.split(","));
return findFirst(sql, id);
}
public M findColsByIds(String columns, Object... ids) {
TableMeta tableMeta = getTableMeta();
String[] keys = getPrimaryKeys(tableMeta);
String sql = getDialect().select(tableMeta.getTableName(), "", Joiner.on("=? AND ").join(keys) + "=?", columns.split(","));
return findFirst(sql, ids);
}
public List findColsInIds(String columns, Object... ids) {
TableMeta tableMeta = getTableMeta();
String key = getPrimaryKey(tableMeta);
Dialect dialect = getDialect();
StringBuilder appendQuestions = new StringBuilder();
for (int i = 0; i < ids.length; i++) {
if (i == 0) {
appendQuestions.append("?");
} else {
appendQuestions.append(",?");
}
}
String sql = dialect.select(tableMeta.getTableName(), "", key + " IN (" + appendQuestions + ")", columns.split(","));
return find(sql, ids);
}
/**
* @param pageNumber 页码
* @param pageSize 每页数量
* @param sql sql语句
* @param params 参数
* @return
*/
public Page paginate(int pageNumber, int pageSize, String sql, Object... params) {
checkArgument(pageNumber >= 1 && pageSize >= 1, "pageNumber and pageSize must be more than 0");
DataSourceMeta dsm = getDataSourceMeta();
Dialect dialect = dsm.getDialect();
List list = find(dialect.paginateWith(pageNumber, pageSize, sql), params);
return new Page(list, pageNumber, pageSize);
}
/**
* @param pageNumber 页码
* @param pageSize 每页数量
* @param sql sql语句
* @param params 参数
* @return
*/
public FullPage fullPaginate(int pageNumber, int pageSize, String sql, Object... params) {
checkArgument(pageNumber >= 1 && pageSize >= 1, "pageNumber and pageSize must be more than 0");
DataSourceMeta dsm = getDataSourceMeta();
Dialect dialect = dsm.getDialect();
long totalRow = 0;
int totalPage = 0;
List result = query(dialect.countWith(sql), params);
int size = result.size();
if (size == 1)
totalRow = ((Number) result.get(0)).longValue();
else if (size > 1)
totalRow = result.size();
else
return new FullPage(new ArrayList(0), pageNumber, pageSize, 0, 0); // totalRow = 0;
totalPage = (int) (totalRow / pageSize);
if (totalRow % pageSize != 0) {
totalPage++;
}
// --------
List list = find(dialect.paginateWith(pageNumber, pageSize, sql), params);
return new FullPage(list, pageNumber, pageSize, totalPage, (int) totalRow);
}
/**
* Save model.
*
* @return boolean
*/
public boolean save() {
TableMeta tableMeta = getTableMeta();
//清除缓存
if (tableMeta.isCached()) {
purgeCache();
}
String generatedKey = tableMeta.getGeneratedKey();
boolean generated = tableMeta.isGenerated();
if (!generatedKey.isEmpty() && get(generatedKey) == null) {
if (generated) {
set(generatedKey, tableMeta.getGenerator().generateKey());
}
}
DataSourceMeta dsm = getDataSourceMeta();
Dialect dialect = dsm.getDialect();
String[] columns = getModifyAttrNames();
//判断是否有更新
if (columns.length <= 0) {
logger.warn("Could not found any data to save.");
return false;
} else {
String sql = dialect.insert(tableMeta.getTableName(), columns);
Connection conn = null;
PreparedStatement pst = null;
int result = 0;
try {
conn = getConnection(dsm);
pst = getPreparedStatement(conn, tableMeta, sql, getModifyAttrValues());
result = pst.executeUpdate();
// if(!generatedKey.isEmpty()) {
setGeneratedKey(pst, tableMeta);
// }
clearModifyAttrs();
return result >= 1;
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} finally {
dsm.close(pst, conn);
}
}
}
public boolean save(M... models) {
return save(Arrays.asList(models));
}
/**
* 批量保存model
*
* @param models model集合
* @return boolean
*/
public boolean save(List models) {
if (models == null || models.size() <= 0) {
logger.warn("Cloud not found models to save.");
return false;
}
M firstModel = models.get(0);
if (models.size() == 1) {
return firstModel.save();
}
TableMeta tableMeta = firstModel.getTableMeta();
//清除models缓存
if (tableMeta.isCached()) {
firstModel.purgeCache();
}
String generatedKey = tableMeta.getGeneratedKey();
//是否需要主键生成器生成值
boolean generated = tableMeta.isGenerated();
Generator generator = tableMeta.getGenerator();
if (!generatedKey.isEmpty() && get(generatedKey) == null) {
if (generated) {
firstModel.set(generatedKey, generator.generateKey());
}
}
DataSourceMeta dsm = firstModel.getDataSourceMeta();
Dialect dialect = dsm.getDialect();
String[] columns = firstModel.getModifyAttrNames();
//判断是否有更新
if (columns.length <= 0) {
logger.warn("Could not found any data to save.");
return false;
} else {
String sql = dialect.insert(tableMeta.getTableName(), columns);
//参数
Object[][] params = new Object[models.size()][columns.length];
for (int i = 0; i < params.length; i++) {
for (int j = 0; j < params[i].length; j++) {
//如果是自动生成主键 使用生成器生成
if (!generatedKey.isEmpty() && generated && columns[j].equals(generatedKey) && models.get(i).get(generatedKey) == null) {
models.get(i).set(columns[j], generator.generateKey());
}
params[i][j] = models.get(i).get(columns[j]);
}
}
Connection conn = null;
PreparedStatement pst = null;
Boolean autoCommit = null;
int[] result = null;
try {
conn = getConnection(dsm);
autoCommit = conn.getAutoCommit();
if (autoCommit) {
conn.setAutoCommit(false);
}
pst = getPreparedStatement(conn, tableMeta, sql, params);
result = pst.executeBatch();
// if (!generatedKey.isEmpty()) {
setGeneratedKey(pst, tableMeta, models);
// }
//没有事务的情况下 手动提交
if (dsm.getCurrentConnection() == null)
conn.commit();
conn.setAutoCommit(autoCommit);
for (M model : models) {
model.clearModifyAttrs();
}
//判断是否是保存了所有数据
for (int r : result) {
if (r < 1) {
return false;
}
}
return true;
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} finally {
dsm.close(pst, conn);
}
}
}
/**
* update sql
*
* @param sql sql
* @param params 参数
* @return boolean
*/
public boolean update(String sql, Object... params) {
TableMeta tableMeta = getTableMeta();
DataSourceMeta dsm = getDataSourceMeta();
//清除缓存
if (tableMeta.isCached()) {
purgeCache();
}
if (devMode) {
checkTableName(tableMeta.getTableName(), sql);
}
int result = -1;
Connection conn = null;
PreparedStatement pst = null;
try {
conn = getConnection(dsm);
pst = getPreparedStatement(conn, tableMeta, sql, params);
result = pst.executeUpdate();
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} finally {
dsm.close(pst, conn);
}
return result > 0;
}
/**
* Update model.
*/
public boolean update() {
Map attrs = getAttrs();
if (getModifyAttrs().isEmpty())
return false;
TableMeta tableMeta = getTableMeta();
Dialect dialect = getDialect();
String generatedKey = tableMeta.getGeneratedKey();
boolean generated = tableMeta.isGenerated();
Object id = null;
if (!generatedKey.isEmpty() && !generated) {
id = attrs.get(generatedKey);
checkNotNull(id, "You can't update model without Generated Key " + generatedKey + ".");
}
String where = null;
Object[] params = null;
Object[] modifys = getModifyAttrValues();
//锁定主键 更新的时候 使用所有主键作为条件
Object[] ids;
String[] keys;
String[] pkeys = tableMeta.getPrimaryKey();
int i = 0;
int j = 0;
if (!generatedKey.isEmpty() && !generated) {
ids = new Object[pkeys.length + 1];
keys = new String[pkeys.length + 1];
keys[j++] = generatedKey;
ids[i++] = id;
} else {
ids = new Object[pkeys.length];
keys = new String[pkeys.length];
}
for (String pKey : pkeys) {
keys[j++] = pKey;
ids[i++] = attrs.get(pKey);
}
if (ids.length > 0) {
params = new Object[ids.length + modifys.length];
System.arraycopy(modifys, 0, params, 0, modifys.length);
System.arraycopy(ids, 0, params, modifys.length, ids.length);
where = Joiner.on("=? AND ").join(keys) + "=?";
} else {
params = modifys;
}
String[] columns = getModifyAttrNames();
//判断是否有更新
if (columns.length <= 0) {
logger.warn("Could not found any data to update.");
return false;
} else {
String sql = dialect.update(tableMeta.getTableName(), getAlias(), where, columns);
if (update(sql, params)) {
clearModifyAttrs();
return true;
}
return false;
}
}
/**
* Execute sql update
*/
public boolean execute(String... sqls) {
return execute(Arrays.asList(sqls));
}
/**
* Execute a batch of SQL INSERT, UPDATE, or DELETE queries.
* int[] result = DbPro.use().batch("myConfig", sqlList, 500);
*
* @param sqls The SQL list to execute.
* @return The number of rows updated per statement
*/
public boolean execute(List sqls) {
Statement stmt = null;
int[] result = null;
Connection conn = null;
Boolean autoCommit = null;
DataSourceMeta dsm = getDataSourceMeta();
try {
conn = getConnection(dsm);
autoCommit = conn.getAutoCommit();
if (autoCommit)
conn.setAutoCommit(false);
stmt = getPreparedStatement(conn, sqls);
result = stmt.executeBatch();
//没有事务的情况下 手动提交
if (dsm.getCurrentConnection() == null)
conn.commit();
conn.setAutoCommit(autoCommit);
for (int r : result) {
if (r < 1) {
return false;
}
}
return true;
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} finally {
dsm.close(stmt, conn);
}
}
/**
* Delete model.
*/
public boolean delete() {
Object[] ids = getPrimaryValues(getTableMeta());
return deleteByIds(ids);
}
/**
* Delete model by id.
*
* @param id the id value of the model
* @return true if delete succeed otherwise false
*/
public boolean deleteById(Object id) {
checkNotNull(id, "You can't delete model without primaryKey.");
TableMeta tableMeta = getTableMeta();
String key = getPrimaryKey(tableMeta);
String sql = getDialect().delete(tableMeta.getTableName(), key + "=?");
return update(sql, id);
}
/**
* Delete model by multi id
*
* @param ids
* @return
*/
public boolean deleteByIds(Object... ids) {
checkNotNull(ids, "You can't delete model without primaryKey.");
TableMeta tableMeta = getTableMeta();
String[] keys = getPrimaryKeys(tableMeta);
String sql = getDialect().delete(tableMeta.getTableName(), Joiner.on("=? AND ").join(keys) + "=?");
return update(sql, ids);
}
/**
* Delete model by ids
*
* @param ids
* @return
*/
public boolean deleteInIds(Object... ids) {
checkNotNull(ids, "You can't delete model without primaryKey.");
TableMeta tableMeta = getTableMeta();
String key = getPrimaryKey(tableMeta);
Dialect dialect = getDialect();
StringBuilder appendQuestions = new StringBuilder();
for (int i = 0; i < ids.length; i++) {
if (i == 0) {
appendQuestions.append("?");
} else {
appendQuestions.append(",?");
}
}
String sql = dialect.delete(tableMeta.getTableName(), key + " IN (" + appendQuestions + ")");
return update(sql, ids);
}
/**
* 查询全部的model数据
*
* @return model 集合
*/
public List findAll() {
return find(getDialect().select(getTableMeta().getTableName()));
}
/**
* 查询全部的model数据
*
* @param columns 列 用逗号分割
* @return model 集合
*/
public List findColsAll(String columns) {
return find(getDialect().select(getTableMeta().getTableName(), columns.split(",")));
}
/**
* 根据where条件查询model集合
*
* @param where 条件
* @param params 参数
* @return list
*/
public List findBy(String where, Object... params) {
return find(getDialect().select(getTableMeta().getTableName(), getAlias(), where), params);
}
/**
* 根据where条件查询model集合
*
* @param colums 列 用逗号分割
* @param where 条件
* @param params 参数
* @return model集合
*/
public List findColsBy(String colums, String where, Object... params) {
return find(getDialect().select(getTableMeta().getTableName(), getAlias(), where, colums.split(",")), params);
}
/**
* 根据条件查询 前几位
*
* @param topNumber 前几位
* @param where 条件
* @param params 参数
* @return list
*/
public List findTopBy(int topNumber, String where, Object... params) {
return fullPaginate(1, topNumber, getDialect().select(getTableMeta().getTableName(), getAlias(), where), params).getList();
}
/**
* 根据条件查询 前几位
*
* @param topNumber 前几位
* @param columns 列 用逗号分割
* @param where 条件
* @param params 参数
* @return list
*/
public List findColsTopBy(int topNumber, String columns, String where, Object... params) {
return fullPaginate(1, topNumber, getDialect().select(getTableMeta().getTableName(), getAlias(), where, columns.split(",")), params).getList();
}
/**
* 根据条件查询第一个对象
*
* @param where 条件
* @param params 参数
* @return model对象
*/
public M findFirstBy(String where, Object... params) {
return findFirst(getDialect().select(getTableMeta().getTableName(), getAlias(), where), params);
}
/**
* 根据条件查询第一个对象
*
* @param columns 列 用逗号分割
* @param where 条件
* @param params 参数
* @return model对象
*/
public M findColsFirstBy(String columns, String where, Object... params) {
return findFirst(getDialect().select(getTableMeta().getTableName(), getAlias(), where, columns.split(",")), params);
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @return 分页对象
*/
public Page paginateAll(int pageNumber, int pageSize) {
return paginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName()));
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @param columns 列 用逗号分割
* @return 分页对象
*/
public Page paginateColsAll(int pageNumber, int pageSize, String columns) {
return paginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName(), columns.split(",")));
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @param where 条件
* @param params 参数
* @return 分页对象
*/
public Page paginateBy(int pageNumber, int pageSize, String where, Object... params) {
return paginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName(), getAlias(), where), params);
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @param columns 列 用逗号分割
* @param where 条件
* @param params 参数
* @return 分页对象
*/
public Page paginateColsBy(int pageNumber, int pageSize, String columns, String where, Object... params) {
return paginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName(), getAlias(), where, columns.split(",")), params);
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @return 分页对象
*/
public FullPage fullPaginateAll(int pageNumber, int pageSize) {
return fullPaginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName()));
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @param columns 列 用逗号分割
* @return 分页对象
*/
public FullPage fullPaginateColsAll(int pageNumber, int pageSize, String columns) {
return fullPaginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName(), columns.split(",")));
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @param where 条件
* @param params 参数
* @return 分页对象
*/
public FullPage fullPaginateBy(int pageNumber, int pageSize, String where, Object... params) {
return fullPaginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName(), getAlias(), where), params);
}
/**
* 分页查询
*
* @param pageNumber 页码
* @param pageSize 每页大小
* @param columns 列 用逗号分割
* @param where 条件
* @param params 参数
* @return 分页对象
*/
public FullPage fullPaginateColsBy(int pageNumber, int pageSize, String columns, String where, Object... params) {
return fullPaginate(pageNumber, pageSize, getDialect().select(getTableMeta().getTableName(), getAlias(), where, columns.split(",")), params);
}
/**
* 更新全部传入的列 UPDATE table SET name=?,age=? 参数 "abc",20
*
* @param columns 通过逗号分隔的列名 "name,age"
* @param params 按列名顺序排列参数 "abc",20
* @return boolean
*/
public boolean updateColsAll(String columns, Object... params) {
logger.warn("You must ensure that \"updateAll()\" method of safety.");
return update(getDialect().update(getTableMeta().getTableName(), columns.split(",")), params);
}
/**
* 根据条件和传入的列更新 UPDATE table SET name=?,age=? WHERE x=? 参数 "abc",20,12
*
* @param columns 通过逗号分隔的列 "name,age"
* @param where 条件 x=?
* @param params 按列名顺序排列参数 "abc",20,12
* @return boolean
*/
public boolean updateColsBy(String columns, String where, Object... params) {
return update(getDialect().update(getTableMeta().getTableName(), getAlias(), where, columns.split(",")), params);
}
/**
* 删除全部数据
*
* @return boolean
*/
public boolean deleteAll() {
logger.warn("You must ensure that \"deleteAll()\" method of safety.");
return update(getDialect().delete(getTableMeta().getTableName()));
}
/**
* 根据条件删除数据
*
* @param where 条件
* @param params 参数
* @return
*/
public boolean deleteBy(String where, Object... params) {
return update(getDialect().delete(getTableMeta().getTableName(), where), params);
}
/**
* COUNT 函数求和
*
* @return Long
*/
public Long countAll() {
return new Long(queryFirst(getDialect().count(getTableMeta().getTableName())).toString());
}
/**
* COUNT 根据条件函数求和
*
* @return Long
*/
public Long countBy(String where, Object... params) {
return new Long(queryFirst(getDialect().count(getTableMeta().getTableName(), getAlias(), where), params).toString());
}
/**
* 返回不确定的数据类型
*
* @param sql sql语句
* @param params sql参数
* @param 返回的数据类型
* @return List
*/
public List query(String sql, Object... params) {
boolean cached = false;
boolean useCache = isUseCache();
TableMeta tableMeta = getTableMeta();
List result = null;
if (useCache) {
cached = tableMeta.isCached();
//hit cache
if (cached) {
result = getCache(sql, params);
if (result != null) {
return result;
}
}
} else {
logger.debug("This query not use cache.");
}
DataSourceMeta dsm = getDataSourceMeta();
Connection conn = null;
PreparedStatement pst = null;
ResultSet rs = null;
try {
conn = getConnection(dsm);
pst = getPreparedStatement(conn, tableMeta, sql, params);
rs = pst.executeQuery();
result = readQueryResult(rs);
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} finally {
dsm.close(rs, pst, conn);
}
//add cache
if (cached) {
addCache(sql, params, result);
}
return result;
}
/**
* 读取result list
*
* @param rs rs
* @param T
* @return list
* @throws SQLException
*/
private List readQueryResult(ResultSet rs) throws SQLException {
List result = new ArrayList();
int colAmount = rs.getMetaData().getColumnCount();
if (colAmount > 1) {
while (rs.next()) {
Object[] temp = new Object[colAmount];
for (int i = 0; i < colAmount; i++) {
temp[i] = rs.getObject(i + 1);
}
result.add((T) temp);
}
} else if (colAmount == 1) {
while (rs.next()) {
result.add((T) rs.getObject(1));
}
}
return result;
}
/**
* Execute sql query and return the first result. I recommend add "limit 1" in your sql.
*
* @param sql an SQL statement that may contain one or more '?' IN parameter placeholders
* @param params the parameters of sql
* @return Object[] if your sql has select more than one column,
* and it return Object if your sql has select only one column.
*/
public T queryFirst(String sql, Object... params) {
TableMeta tableMeta = getTableMeta();
List result = query(tableMeta.getDialect().paginateWith(1, 1, sql), params);
return result.size() > 0 ? result.get(0) : null;
}
/**
* 返回单个对象的存储过程
*
* @param sql
* @param objectCall
* @param
* @return
*/
public T queryCall(String sql, ObjectCall objectCall) {
Connection conn = null;
CallableStatement cstmt = null;
DataSourceMeta dsm = getDataSourceMeta();
try {
conn = getConnection(dsm);
cstmt = conn.prepareCall(sql);
return (T) objectCall.call(cstmt);
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} finally {
dsm.close(cstmt, conn);
}
}
/**
* 调用存储过程
* int CallableStatement.executeUpdate: 存储过程不返回结果集。
* ResultSet CallableStatement.executeQuery: 存储过程返回一个结果集。
* Boolean CallableStatement.execute: 存储过程返回多个结果集。
* int[] CallableStatement.executeBatch: 提交批处理命令到数据库执行。
*
* @param sql 存储过程的sql
* @param resultSetCall 执行请求 返回结果
* @param 返回类型
* @return T
*/
public List queryCall(String sql, ResultSetCall resultSetCall) {
Connection conn = null;
CallableStatement cstmt = null;
DataSourceMeta dsm = getDataSourceMeta();
try {
conn = getConnection(dsm);
cstmt = conn.prepareCall(sql);
return readQueryResult(resultSetCall.call(cstmt));
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} finally {
dsm.close(cstmt, conn);
}
}
/**
* @param sql
* @param resultSetCall
* @param
* @return
*/
public T queryCallFirst(String sql, ResultSetCall resultSetCall) {
TableMeta tableMeta = getTableMeta();
List result = queryCall(tableMeta.getDialect().paginateWith(1, 1, sql), resultSetCall);
return result.size() > 0 ? result.get(0) : null;
}
/**
* 返回一个Model的结果集
*
* @param sql
* @param resultSetCall
* @return
*/
public List findCall(String sql, ResultSetCall resultSetCall) {
Connection conn = null;
CallableStatement cstmt = null;
DataSourceMeta dsm = getDataSourceMeta();
TableMeta tableMeta = getTableMeta();
try {
conn = getConnection(dsm);
cstmt = conn.prepareCall(sql);
return BaseBuilder.build(resultSetCall.call(cstmt), getMClass(), dsm, tableMeta);
} catch (SQLException e) {
throw new DBException(e.getMessage(), e);
} catch (InstantiationException e) {
throw new EntityException(e.getMessage(), e);
} catch (IllegalAccessException e) {
throw new EntityException(e.getMessage(), e);
} finally {
dsm.close(cstmt, conn);
}
}
/**
* 返回一个Model
*
* @param sql
* @param resultSetCall
* @return
*/
public M findCallFirst(String sql, ResultSetCall resultSetCall) {
TableMeta tableMeta = getTableMeta();
List result = findCall(tableMeta.getDialect().paginateWith(1, 1, sql), resultSetCall);
return result.size() > 0 ? result.get(0) : null;
}
/**
* 反序列化的扩展类
*/
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
//注意这里的接受顺序是有限制的哦，否则的话会出错的
//例如上面先write的是A对象的话，那么下面先接受的也一定是A对象...
putAttrs((Map) in.readObject());
}
/**
* 序列化操作的扩展类
*/
public void writeExternal(ObjectOutput out) throws IOException {
//增加一个新的对象
out.writeObject(getAttrs());
}
}
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