/// <summary>
/// 释放对象占用的所有资源。
/// </summary>
public virtual void Dispose()
{
_wheres?.Clear();
_wheres = null;
_dataContext = null;
_addCommandParameter = null;
_dialect = null;
_layerLeft = null;
}
/// <summary>
/// 创建WhereExpression实例。
/// </summary>
/// <param name="dataContext">数据上下文接口。</param>
/// <param name="dialect">方言对象。</param>
/// <param name="addCommandParameter"></param>
/// <param name="layer">层</param>
public WhereExpression(IDataContext dataContext, IDialect dialect, AddCommandParameterDelegate addCommandParameter, int layer)
{
_dataContext = dataContext;
_dialect = dialect;
_addCommandParameter = addCommandParameter;
dataContext.DisposableObjects?.Add(this);
_wheres = new System.Collections.Generic.Dictionary <string, WhereOperators>(System.StringComparer.OrdinalIgnoreCase);
_layer = Math.Max(layer, 1);
_layerLeft = "".PadLeft(4 * _layer, ' ');
}
/// <summary>
/// 创建WhereExpression实例。
/// </summary>
/// <param name="dataContext">数据上下文接口。</param>
/// <param name="dialect">方言对象。</param>
/// <param name="addCommandParameter"></param>
public WhereExpression(IDataContext dataContext, IDialect dialect, AddCommandParameterDelegate addCommandParameter)
: this(dataContext, dialect, addCommandParameter, 1)
{
}
