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514 lines
19 KiB
C#
514 lines
19 KiB
C#
using FreeSql.Extensions.EntityUtil;
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using FreeSql.Internal.Model;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.Common;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Text;
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using System.Threading.Tasks;
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namespace FreeSql.Internal.CommonProvider {
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abstract partial class UpdateProvider<T1> : IUpdate<T1> where T1 : class {
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protected IFreeSql _orm;
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protected CommonUtils _commonUtils;
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protected CommonExpression _commonExpression;
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protected List<T1> _source = new List<T1>();
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protected Dictionary<string, bool> _ignore = new Dictionary<string, bool>(StringComparer.CurrentCultureIgnoreCase);
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protected TableInfo _table;
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protected Func<string, string> _tableRule;
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protected StringBuilder _where = new StringBuilder();
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protected StringBuilder _set = new StringBuilder();
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protected StringBuilder _setIncr = new StringBuilder();
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protected List<DbParameter> _params = new List<DbParameter>();
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protected List<DbParameter> _paramsSource = new List<DbParameter>();
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protected bool _noneParameter;
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protected DbTransaction _transaction;
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protected DbConnection _connection;
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public UpdateProvider(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) {
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_orm = orm;
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_commonUtils = commonUtils;
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_commonExpression = commonExpression;
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_table = _commonUtils.GetTableByEntity(typeof(T1));
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_noneParameter = _orm.CodeFirst.IsNoneCommandParameter;
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this.Where(_commonUtils.WhereObject(_table, "", dywhere));
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if (_orm.CodeFirst.IsAutoSyncStructure && typeof(T1) != typeof(object)) _orm.CodeFirst.SyncStructure<T1>();
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}
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protected void ClearData() {
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_source.Clear();
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_ignore.Clear();
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_where.Clear();
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_set.Clear();
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_setIncr.Clear();
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_params.Clear();
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_paramsSource.Clear();
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}
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public IUpdate<T1> WithTransaction(DbTransaction transaction) {
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_transaction = transaction;
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_connection = _transaction?.Connection;
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return this;
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}
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public IUpdate<T1> WithConnection(DbConnection connection) {
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if (_transaction?.Connection != connection) _transaction = null;
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_connection = connection;
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return this;
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}
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public IUpdate<T1> NoneParameter() {
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_noneParameter = true;
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return this;
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}
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protected void ValidateVersionAndThrow(int affrows) {
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if (_table.VersionColumn != null && _source.Count > 0) {
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if (affrows != _source.Count)
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throw new Exception($"记录可能不存在，或者【行级乐观锁】版本过旧，更新数量{_source.Count}，影响的行数{affrows}。");
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foreach (var d in _source)
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_orm.SetEntityIncrByWithPropertyName(_table.Type, d, _table.VersionColumn.CsName, 1);
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}
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}
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#region 参数化数据限制，或values数量限制
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internal List<T1>[] SplitSource(int valuesLimit, int parameterLimit) {
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valuesLimit = valuesLimit - 1;
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parameterLimit = parameterLimit - 1;
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if (_source == null || _source.Any() == false) return new List<T1>[0];
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if (_source.Count == 1) return new[] { _source };
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if (_noneParameter) {
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if (_source.Count < valuesLimit) return new[] { _source };
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var execCount = (int)Math.Ceiling(1.0 * _source.Count / valuesLimit);
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var ret = new List<T1>[execCount];
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for (var a = 0; a < execCount; a++) {
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var subSource = new List<T1>();
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subSource = _source.GetRange(a * valuesLimit, Math.Min(valuesLimit, _source.Count - a * valuesLimit));
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ret[a] = subSource;
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}
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return ret;
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} else {
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var colSum = _table.Columns.Count - _ignore.Count;
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var takeMax = parameterLimit / colSum;
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var pamTotal = colSum * _source.Count;
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if (pamTotal < parameterLimit) return new[] { _source };
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var execCount = (int)Math.Ceiling(1.0 * pamTotal / parameterLimit);
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var ret = new List<T1>[execCount];
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for (var a = 0; a < execCount; a++) {
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var subSource = new List<T1>();
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subSource = _source.GetRange(a * takeMax, Math.Min(takeMax, _source.Count - a * takeMax));
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ret[a] = subSource;
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}
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return ret;
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}
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}
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internal int SplitExecuteAffrows(int valuesLimit, int parameterLimit) {
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var ss = SplitSource(valuesLimit, parameterLimit);
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var ret = 0;
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if (ss.Length <= 1) {
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ret = this.RawExecuteAffrows();
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ClearData();
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return ret;
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}
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if (_transaction != null) {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret += this.RawExecuteAffrows();
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}
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} else {
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using (var conn = _orm.Ado.MasterPool.Get()) {
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_transaction = conn.Value.BeginTransaction();
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try {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret += this.RawExecuteAffrows();
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}
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_transaction.Commit();
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} catch {
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_transaction.Rollback();
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throw;
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}
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_transaction = null;
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}
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}
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ClearData();
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return ret;
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}
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async internal Task<int> SplitExecuteAffrowsAsync(int valuesLimit, int parameterLimit) {
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var ss = SplitSource(valuesLimit, parameterLimit);
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var ret = 0;
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if (ss.Length <= 1) {
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ret = await this.RawExecuteAffrowsAsync();
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ClearData();
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return ret;
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}
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if (_transaction != null) {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret += await this.RawExecuteAffrowsAsync();
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}
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} else {
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using (var conn = await _orm.Ado.MasterPool.GetAsync()) {
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_transaction = conn.Value.BeginTransaction();
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try {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret += await this.RawExecuteAffrowsAsync();
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}
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_transaction.Commit();
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} catch {
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_transaction.Rollback();
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throw;
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}
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_transaction = null;
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}
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}
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ClearData();
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return ret;
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}
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internal List<T1> SplitExecuteUpdated(int valuesLimit, int parameterLimit) {
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var ss = SplitSource(valuesLimit, parameterLimit);
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var ret = new List<T1>();
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if (ss.Length <= 1) {
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ret = this.RawExecuteUpdated();
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ClearData();
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return ret;
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}
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if (_transaction != null) {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret.AddRange(this.RawExecuteUpdated());
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}
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} else {
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using (var conn = _orm.Ado.MasterPool.Get()) {
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_transaction = conn.Value.BeginTransaction();
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try {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret.AddRange(this.RawExecuteUpdated());
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}
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_transaction.Commit();
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} catch {
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_transaction.Rollback();
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throw;
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}
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_transaction = null;
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}
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}
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ClearData();
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return ret;
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}
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async internal Task<List<T1>> SplitExecuteUpdatedAsync(int valuesLimit, int parameterLimit) {
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var ss = SplitSource(valuesLimit, parameterLimit);
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var ret = new List<T1>();
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if (ss.Length <= 1) {
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ret = await this.RawExecuteUpdatedAsync();
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ClearData();
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return ret;
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}
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if (_transaction != null) {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret.AddRange(await this.RawExecuteUpdatedAsync());
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}
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} else {
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using (var conn = await _orm.Ado.MasterPool.GetAsync()) {
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_transaction = conn.Value.BeginTransaction();
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try {
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for (var a = 0; a < ss.Length; a++) {
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_source = ss[a];
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ret.AddRange(await this.RawExecuteUpdatedAsync());
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}
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_transaction.Commit();
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} catch {
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_transaction.Rollback();
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throw;
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}
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_transaction = null;
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}
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}
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ClearData();
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return ret;
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}
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#endregion
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internal int RawExecuteAffrows() {
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var sql = this.ToSql();
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if (string.IsNullOrEmpty(sql)) return 0;
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var dbParms = _params.Concat(_paramsSource).ToArray();
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var affrows = _orm.Ado.ExecuteNonQuery(_connection, _transaction, CommandType.Text, sql, dbParms);
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_orm.Aop.OnUpdated?.Invoke(this, new AopOnInsertedEventArgs(_table.Type, null, sql, dbParms, affrows, 0, null));
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ValidateVersionAndThrow(affrows);
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return affrows;
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}
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async internal Task<int> RawExecuteAffrowsAsync() {
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var sql = this.ToSql();
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if (string.IsNullOrEmpty(sql)) return 0;
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var dbParms = _params.Concat(_paramsSource).ToArray();
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var affrows = await _orm.Ado.ExecuteNonQueryAsync(_connection, _transaction, CommandType.Text, sql, dbParms);
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_orm.Aop.OnUpdated?.Invoke(this, new AopOnInsertedEventArgs(_table.Type, null, sql, dbParms, affrows, 0, null));
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ValidateVersionAndThrow(affrows);
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return affrows;
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}
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internal abstract List<T1> RawExecuteUpdated();
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internal abstract Task<List<T1>> RawExecuteUpdatedAsync();
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public abstract int ExecuteAffrows();
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public abstract Task<int> ExecuteAffrowsAsync();
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public abstract List<T1> ExecuteUpdated();
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public abstract Task<List<T1>> ExecuteUpdatedAsync();
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public IUpdate<T1> IgnoreColumns(Expression<Func<T1, object>> columns) {
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var cols = _commonExpression.ExpressionSelectColumns_MemberAccess_New_NewArrayInit(null, columns?.Body, false, null).Distinct();
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_ignore.Clear();
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foreach (var col in cols) _ignore.Add(col, true);
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return this;
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}
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public IUpdate<T1> UpdateColumns(Expression<Func<T1, object>> columns) {
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var cols = _commonExpression.ExpressionSelectColumns_MemberAccess_New_NewArrayInit(null, columns?.Body, false, null).ToDictionary(a => a, a => true);
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_ignore.Clear();
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foreach (var col in _table.Columns.Values)
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if (cols.ContainsKey(col.Attribute.Name) == false)
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_ignore.Add(col.Attribute.Name, true);
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return this;
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}
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public IUpdate<T1> IgnoreColumns(string[] columns) {
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_ignore.Clear();
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foreach (var col in columns) _ignore.Add(col, true);
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return this;
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}
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public IUpdate<T1> UpdateColumns(string[] columns) {
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var cols = columns.ToDictionary(a => a);
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_ignore.Clear();
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foreach (var col in _table.Columns.Values)
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if (cols.ContainsKey(col.Attribute.Name) == false)
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_ignore.Add(col.Attribute.Name, true);
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return this;
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}
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public IUpdate<T1> SetSource(T1 source) => this.SetSource(new[] { source });
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public IUpdate<T1> SetSource(IEnumerable<T1> source) {
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if (source == null || source.Any() == false) return this;
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_source.AddRange(source.Where(a => a != null));
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return this;
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}
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public IUpdate<T1> Set<TMember>(Expression<Func<T1, TMember>> column, TMember value) {
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var cols = new List<SelectColumnInfo>();
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_commonExpression.ExpressionSelectColumn_MemberAccess(null, cols, SelectTableInfoType.From, column?.Body, true, null);
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if (cols.Count != 1) return this;
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var col = cols.First();
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object paramVal = null;
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if (col.Column.Attribute.MapType == typeof(TMember)) paramVal = value;
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else paramVal = Utils.GetDataReaderValue(col.Column.Attribute.MapType, value);
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_set.Append(", ").Append(_commonUtils.QuoteSqlName(col.Column.Attribute.Name)).Append(" = ");
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if (_noneParameter) {
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_set.Append(_commonUtils.GetNoneParamaterSqlValue(_params, col.Column.Attribute.MapType, paramVal));
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} else {
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_set.Append(_commonUtils.QuoteWriteParamter(col.Column.Attribute.MapType, $"{_commonUtils.QuoteParamterName("p_")}{_params.Count}"));
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_commonUtils.AppendParamter(_params, null, col.Column.Attribute.MapType, paramVal);
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}
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//foreach (var t in _source) Utils.FillPropertyValue(t, tryf.CsName, value);
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return this;
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}
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public IUpdate<T1> Set<TMember>(Expression<Func<T1, TMember>> binaryExpression) {
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if (binaryExpression?.Body is BinaryExpression == false &&
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binaryExpression?.Body.NodeType != ExpressionType.Call) return this;
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var cols = new List<SelectColumnInfo>();
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var expt = _commonExpression.ExpressionWhereLambdaNoneForeignObject(null, _table, cols, binaryExpression, null);
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if (cols.Any() == false) return this;
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foreach (var col in cols) {
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if (col.Column.Attribute.IsNullable == true && col.Column.Attribute.MapType.IsNullableType()) {
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var replval = _orm.CodeFirst.GetDbInfo(col.Column.Attribute.MapType.GenericTypeArguments.FirstOrDefault())?.defaultValue;
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if (replval == null) continue;
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var replname = _commonUtils.QuoteSqlName(col.Column.Attribute.Name);
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expt = expt.Replace(replname, _commonUtils.IsNull(replname, _commonUtils.FormatSql("{0}", replval)));
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}
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}
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_setIncr.Append(", ").Append(_commonUtils.QuoteSqlName(cols.First().Column.Attribute.Name)).Append(" = ").Append(expt);
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return this;
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}
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public IUpdate<T1> SetRaw(string sql, object parms = null) {
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if (string.IsNullOrEmpty(sql)) return this;
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_set.Append(", ").Append(sql);
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if (parms != null) _params.AddRange(_commonUtils.GetDbParamtersByObject(sql, parms));
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return this;
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}
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public IUpdate<T1> Where(Expression<Func<T1, bool>> expression) => this.Where(_commonExpression.ExpressionWhereLambdaNoneForeignObject(null, _table, null, expression?.Body, null));
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public IUpdate<T1> Where(string sql, object parms = null) {
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if (string.IsNullOrEmpty(sql)) return this;
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var args = new AopWhereEventArgs(sql, parms);
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_orm.Aop.Where?.Invoke(this, new AopWhereEventArgs(sql, parms));
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if (args.IsCancel == true) return this;
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_where.Append(" AND (").Append(sql).Append(")");
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if (parms != null) _params.AddRange(_commonUtils.GetDbParamtersByObject(sql, parms));
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return this;
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}
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public IUpdate<T1> Where(T1 item) => this.Where(new[] { item });
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public IUpdate<T1> Where(IEnumerable<T1> items) => this.Where(_commonUtils.WhereItems(_table, "", items));
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public IUpdate<T1> WhereExists<TEntity2>(ISelect<TEntity2> select, bool notExists = false) where TEntity2 : class => this.Where($"{(notExists ? "NOT " : "")}EXISTS({select.ToSql("1")})");
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public IUpdate<T1> WhereDynamic(object dywhere) => this.Where(_commonUtils.WhereObject(_table, "", dywhere));
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protected string WhereCaseSource(string CsName, Func<string, string> thenValue) {
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if (_source.Any() == false) return null;
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if (_table.ColumnsByCs.ContainsKey(CsName) == false) throw new Exception($"找不到 {CsName} 对应的列");
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if (thenValue == null) throw new ArgumentNullException("thenValue 参数不可为 null");
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if (_source.Count == 0) return null;
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if (_source.Count == 1) {
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var col = _table.ColumnsByCs[CsName];
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var sb = new StringBuilder();
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sb.Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" = ");
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sb.Append(thenValue(_commonUtils.GetNoneParamaterSqlValue(_paramsSource, col.Attribute.MapType, col.GetMapValue(_source.First()))));
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return sb.ToString();
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} else {
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var caseWhen = new StringBuilder();
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caseWhen.Append("CASE ");
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ToSqlCase(caseWhen, _table.Primarys);
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var cw = caseWhen.ToString();
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var col = _table.ColumnsByCs[CsName];
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var sb = new StringBuilder();
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sb.Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" = ");
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var isnull = false;
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var cwsb = new StringBuilder().Append(cw);
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foreach (var d in _source) {
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cwsb.Append(" \r\nWHEN ");
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ToSqlWhen(cwsb, _table.Primarys, d);
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cwsb.Append(" THEN ");
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var value = col.GetMapValue(d);
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cwsb.Append(thenValue(_commonUtils.GetNoneParamaterSqlValue(_paramsSource, col.Attribute.MapType, value)));
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if (isnull == false) isnull = value == null || value == DBNull.Value;
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}
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cwsb.Append(" END");
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if (isnull == false) sb.Append(cwsb.ToString());
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else sb.Append("NULL");
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cwsb.Clear();
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return sb.ToString();
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}
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}
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protected abstract void ToSqlCase(StringBuilder caseWhen, ColumnInfo[] primarys);
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protected abstract void ToSqlWhen(StringBuilder sb, ColumnInfo[] primarys, object d);
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public IUpdate<T1> AsTable(Func<string, string> tableRule) {
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_tableRule = tableRule;
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return this;
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}
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public IUpdate<T1> AsType(Type entityType) {
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if (entityType == typeof(object)) throw new Exception("IUpdate.AsType 参数不支持指定为 object");
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if (entityType == _table.Type) return this;
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var newtb = _commonUtils.GetTableByEntity(entityType);
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_table = newtb ?? throw new Exception("IUpdate.AsType 参数错误，请传入正确的实体类型");
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if (_orm.CodeFirst.IsAutoSyncStructure) _orm.CodeFirst.SyncStructure(entityType);
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return this;
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}
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public string ToSql() {
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if (_where.Length == 0 && _source.Any() == false) return null;
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var sb = new StringBuilder();
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sb.Append("UPDATE ").Append(_commonUtils.QuoteSqlName(_tableRule?.Invoke(_table.DbName) ?? _table.DbName)).Append(" SET ");
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if (_set.Length > 0) { //指定 set 更新
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sb.Append(_set.ToString().Substring(2));
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} else if (_source.Count == 1) { //保存 Source
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_paramsSource.Clear();
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var colidx = 0;
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foreach (var col in _table.Columns.Values) {
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if (col.Attribute.IsIdentity == false && col.Attribute.IsVersion == false && _ignore.ContainsKey(col.CsName) == false) {
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if (colidx > 0) sb.Append(", ");
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sb.Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" = ");
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var value = col.GetMapValue(_source.First());
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if (_noneParameter) {
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sb.Append(_commonUtils.GetNoneParamaterSqlValue(_paramsSource, col.Attribute.MapType, value));
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} else {
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sb.Append(_commonUtils.QuoteWriteParamter(col.Attribute.MapType, _commonUtils.QuoteParamterName($"p_{_paramsSource.Count}")));
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_commonUtils.AppendParamter(_paramsSource, null, col.Attribute.MapType, value);
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}
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++colidx;
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}
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}
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if (colidx == 0) return null;
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} else if (_source.Count > 1) { //批量保存 Source
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if (_table.Primarys.Any() == false) return null;
|
||
|
||
var caseWhen = new StringBuilder();
|
||
caseWhen.Append("CASE ");
|
||
ToSqlCase(caseWhen, _table.Primarys);
|
||
var cw = caseWhen.ToString();
|
||
|
||
_paramsSource.Clear();
|
||
var colidx = 0;
|
||
foreach (var col in _table.Columns.Values) {
|
||
if (col.Attribute.IsIdentity == false && col.Attribute.IsVersion == false && _ignore.ContainsKey(col.CsName) == false) {
|
||
if (colidx > 0) sb.Append(", ");
|
||
sb.Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" = ");
|
||
|
||
var isnull = false;
|
||
var cwsb = new StringBuilder().Append(cw);
|
||
foreach (var d in _source) {
|
||
cwsb.Append(" \r\nWHEN ");
|
||
ToSqlWhen(cwsb, _table.Primarys, d);
|
||
cwsb.Append(" THEN ");
|
||
var value = col.GetMapValue(d);
|
||
if (_noneParameter) {
|
||
cwsb.Append(_commonUtils.GetNoneParamaterSqlValue(_paramsSource, col.Attribute.MapType, value));
|
||
} else {
|
||
cwsb.Append(_commonUtils.QuoteWriteParamter(col.Attribute.MapType, _commonUtils.QuoteParamterName($"p_{_paramsSource.Count}")));
|
||
_commonUtils.AppendParamter(_paramsSource, null, col.Attribute.MapType, value);
|
||
}
|
||
if (isnull == false) isnull = value == null || value == DBNull.Value;
|
||
}
|
||
cwsb.Append(" END");
|
||
if (isnull == false) sb.Append(cwsb.ToString());
|
||
else sb.Append("NULL");
|
||
cwsb.Clear();
|
||
|
||
++colidx;
|
||
}
|
||
}
|
||
if (colidx == 0) return null;
|
||
} else if (_setIncr.Length == 0)
|
||
return null;
|
||
|
||
if (_setIncr.Length > 0)
|
||
sb.Append(_set.Length > 0 ? _setIncr.ToString() : _setIncr.ToString().Substring(2));
|
||
|
||
if (_table.VersionColumn != null) {
|
||
var vcname = _commonUtils.QuoteSqlName(_table.VersionColumn.Attribute.Name);
|
||
sb.Append(", ").Append(vcname).Append(" = ").Append(vcname).Append(" + 1");
|
||
}
|
||
|
||
sb.Append(" \r\nWHERE ");
|
||
if (_source.Any())
|
||
sb.Append("(").Append(_commonUtils.WhereItems(_table, "", _source)).Append(")");
|
||
|
||
if (_where.Length > 0)
|
||
sb.Append(_source.Any() ? _where.ToString() : _where.ToString().Substring(5));
|
||
|
||
if (_table.VersionColumn != null) {
|
||
var versionCondi = WhereCaseSource(_table.VersionColumn.CsName, sqlval => sqlval);
|
||
if (string.IsNullOrEmpty(versionCondi) == false)
|
||
sb.Append(" AND ").Append(versionCondi);
|
||
}
|
||
|
||
return sb.ToString();
|
||
}
|
||
}
|
||
} |