crm高速开发之QueryExpression

/* 创建者：菜刀居士的博客

* 创建日期：2014年07月06号

*/

namespace Net.CRM.OrganizationService

{

using System;

using Microsoft.Xrm.Sdk;

using Microsoft.Xrm.Sdk.Query;

using System.Collections.Generic;

/// <summary>

/// QueryExpression

/// </summary>

public class QueryExpressionDemo

{

/// <summary>

/// 基本模式，构造查询--QueryExpression

/// </summary>

public void CreateQueryExpression()

{

QueryExpression query = new QueryExpression();

//查询的实体名称

query.EntityName = "new_accountproduct";

//查询实体的属性集合

query.ColumnSet = new ColumnSet("new_product","new_name","new_price");

//查询条件

query.Criteria.AddCondition(new ConditionExpression("statecode",ConditionOperator.Equal,0));

query.Criteria.AddCondition(new ConditionExpression("new_name", ConditionOperator.Like, "水果" + "%"));

List<Guid> list = new List<Guid>();

list.Add(new Guid("27BB1B31-09BB-E311-B590-D89D671782D3"));

list.Add(new Guid("E8F8D412-31BB-E311-B590-D89D671782D3"));

query.Criteria.AddCondition(new ConditionExpression("new_product",ConditionOperator.In,list.ToArray()));

query.Criteria.AddCondition(new ConditionExpression("new_name", ConditionOperator.NotNull));

query.Criteria.AddCondition(new ConditionExpression("new_price", ConditionOperator.Null));

}

/// <summary>

/// 高速模式，构造查询--QueryExpression

/// </summary>

public void CreateQuickQueryExpression()

{

QueryExpression query = "new_accountproduct".ToQuery("new_product", "new_name", "new_price");

query.AddEqual("statecode", 0);

query.AddLike("new_name", "水果" + "%");

List<Guid> list = new List<Guid>();

list.Add(new Guid("27BB1B31-09BB-E311-B590-D89D671782D3"));

list.Add(new Guid("E8F8D412-31BB-E311-B590-D89D671782D3"));

query.AddIn("new_product", list.ToArray());

query.AddNotNull("new_name");

query.AddNull("new_price");

}

}

public static class ExtensionFunction

{

public static QueryExpression ToQuery(this string entityName)

{

QueryExpression query = new QueryExpression();

query.EntityName = entityName;

return query;

}

public static QueryExpression ToQuery(this string entityName,params string[] Attrs)

{

QueryExpression query = new QueryExpression();

query.EntityName = entityName;

query.ColumnSet = new ColumnSet(Attrs);

return query;

}

public static void AddEqual<T>(this QueryExpression query,string name,T value)

{

query.Criteria.AddCondition(new ConditionExpression(name,ConditionOperator.Equal,value));

}

public static void AddLike(this QueryExpression query, string name,string value)

{

query.Criteria.AddCondition(new ConditionExpression(name,ConditionOperator.Like,value));

}

public static void AddIn<T>(this QueryExpression query, string name,T[] values)

{

query.Criteria.AddCondition(new ConditionExpression(name, ConditionOperator.In, values));

}

public static void AddNotNull(this QueryExpression query,params string[] attrs)

{

if (attrs != null && attrs.Length > 0)

{

foreach(string name in attrs)

{

query.Criteria.AddCondition(new ConditionExpression(name, ConditionOperator.NotNull));

}

}

}

public static void AddNull(this QueryExpression query, params string[] attrs)

{

if (attrs != null && attrs.Length > 0)

{

foreach (string name in attrs)

{

query.Criteria.AddCondition(new ConditionExpression(name, ConditionOperator.Null));

}

}

}

}

}

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