[转载]org.hibernate.ObjectDeletedException: deleted object would be re-saved(页 1) - 各类程序语言{ Program Development } - 跨越平台[ Java ] - 邪恶八进制信息安全团队技术讨论组努力为祖国的信息安全撑起一片蓝天

ring04h 2006-6-27 18:57

[转载]org.hibernate.ObjectDeletedException: deleted object would be re-saved

信息来源:<a id="HyFromWhere" href="http://www.blogjava.net/rss.aspx?id=-1" target="_blank">BlogJava</a>org.hibernate.ObjectDeletedException: deleted object would be re-saved by cascade (remove deleted object from associations)异常的解决在Hibernate中，删除存在关联关系的一个对象时，会出现 org.hibernate.ObjectDeletedException: deleted object would be re-saved by cascade (remove deleted object from associations)这个异常 如下： 持久化类： <div style="BORDER-RIGHT: rgb(204,204,204) 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: rgb(204,204,204) 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: rgb(204,204,204) 1px solid; WIDTH: 98%; PADDING-TOP: 4px; BORDER-BOTTOM: rgb(204,204,204) 1px solid; BACKGROUND-COLOR: rgb(238,238,238)"><img id="Code_Closed_Image" style="WIDTH: 88px; HEIGHT: 126px" onclick="function anonymous()
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}" height="16" src="http://www.blogjava.net/images/OutliningIndicators/ExpandedBlockStart.gif" width="11" align="top" /><span id="Code_Closed_Text" style="BORDER-RIGHT: rgb(128,128,128) 1px solid; BORDER-TOP: rgb(128,128,128) 1px solid; BORDER-LEFT: rgb(128,128,128) 1px solid; BORDER-BOTTOM: rgb(128,128,128) 1px solid; BACKGROUND-COLOR: rgb(255,255,255)"> package?org.lizheng.platform.model; import?java.util.HashSet; import?java.util.Set; import?org.apache.commons.lang.builder.EqualsBuilder; import?org.apache.commons.lang.builder.HashCodeBuilder; import?org.apache.commons.lang.builder.ToStringBuilder; /** ?*?产品类别对象 ?*?@author?crazycy ?* ?*/ public?class?ProductCategory?extends?BaseObject?{ ????//?Fields???? ????private?long?id; ????private?String?name; ????private?String?description; ????private?ProductCategory?parentCategory; ????private?Set?childrenCategories?=?new?HashSet(); ????//?Constructors ????/**?default?constructor?*/ ????public?ProductCategory()?{ ????} ????/**?minimal?constructor?*/ ????public?ProductCategory(String?name)?{ ????????this.name?=?name; ????} ???? ????public?ProductCategory(String?name,?String?description)?{ ????????this.name?=?name; ????????this.description?=?description; ????} ????/**?full?constructor?*/ ????public?ProductCategory(String?name,?String?description, ????????????ProductCategory?parentCategory)?{ ????????this.name?=?name; ????????this.description?=?description; ????????this.parentCategory?=?parentCategory; ????} ????/**?full?constructor?*/ ????public?ProductCategory(String?name,?String?description, ????????????Set?childrenCategories)?{ ????????this.name?=?name; ????????this.description?=?description; ????????this.childrenCategories?=?childrenCategories; ????} ????//?Property?accessors ????public?long?getId()?{ ????????return?this.id; ????} ????public?void?setId(long?id)?{ ????????this.id?=?id; ????} ????public?String?getName()?{ ????????return?this.name; ????} ????public?void?setName(String?name)?{ ????????this.name?=?name; ????} ????public?String?getDescription()?{ ????????return?this.description; ????} ????public?void?setDescription(String?description)?{ ????????this.description?=?description; ????} ????public?ProductCategory?getParentCategory()?{ ????????return?this.parentCategory; ????} ????public?void?setParentCategory(ProductCategory?parentCategory)?{ ????????this.parentCategory?=?parentCategory; ????} ???? ????/** ?????*?由主来调：是主添加 ?????*?@param?productCategory ?????*/ ????public?void?addCategory(ProductCategory?productCategory)?{ ????????productCategory.setParentCategory(this); ????????childrenCategories.add(productCategory); ????} ???? ????/** ?????*?由主来调；是从主删除 ?????*?@param?productCategory ?????*/ ????public?void?removeCategory(ProductCategory?productCategory)?{ ????????childrenCategories.remove(productCategory); ????????productCategory.setParentCategory(null); ????} ???? ????public?Set?getChildrenCategories()?{ ????????return?childrenCategories; ????} ????public?void?setChildrenCategories(Set?childrenCategories)?{ ????????this.childrenCategories?=?childrenCategories; ????} ????/** ?????*?@see?java.lang.Object#equals(Object) ?????*/ ????public?boolean?equals(Object?object)?{ ????????if?(!(object?instanceof?ProductCategory))?{ ????????????return?false; ????????} ????????ProductCategory?rhs?=?(ProductCategory)?object; ????????return?new?EqualsBuilder().append(this.description,?rhs.description) ????????????????.append(this.name,?rhs.name).append(this.id,?rhs.id).isEquals(); ????} ????/** ?????*?@see?java.lang.Object#hashCode() ?????*/ ????public?int?hashCode()?{ ????????return?new?HashCodeBuilder(1009592109,?-669108101).append( ????????????????this.description).append(this.name).append(this.id) ????????????????.toHashCode(); ????} ????/** ?????*?@see?java.lang.Object#toString() ?????*/ ????public?String?toString()?{ ????????return?new?ToStringBuilder(this).append("name",?this.name).append( ????????????????"description",?this.description).append("id",?this.id) ????????????????.toString(); ????} }</div> 映射文件 <div style="BORDER-RIGHT: rgb(204,204,204) 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: rgb(204,204,204) 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: rgb(204,204,204) 1px solid; WIDTH: 98%; PADDING-TOP: 4px; BORDER-BOTTOM: rgb(204,204,204) 1px solid; BACKGROUND-COLOR: rgb(238,238,238)"><?xml?version="1.0"?> <!DOCTYPE?hibernate-mapping?PUBLIC?"-//Hibernate/Hibernate?Mapping?DTD?3.0//EN" "[url]http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd[/url]"> <hibernate-mapping?package="org.lizheng.platform.model"> ????<class?name="ProductCategory"?table="productcategory"?catalog="lizheng"> ????????<id?name="id"?type="long"> ????????????<column?name="ID"?/> ????????????<generator?class="native"?/> ????????</id> ????????<property?name="name"?type="string"> ????????????<column?name="name"?length="50"?not-null="true"?/> ????????</property> ????????<property?name="description"?type="string"> ????????????<column?name="description"?length="150"?/> ????????</property> ????????<set?name="childrenCategories"?cascade="save-update"?inverse="true"> ????????????<key?column="parent"/> ????????????<one-to-many?class="ProductCategory"/> ????????</set> ????????<many-to-one?name="parentCategory"?column="parent"? ????????????class="ProductCategory"? ????????????cascade="save-update" ?????????> ????????</many-to-one> ????</class> </hibernate-mapping> </div> 测试代码： <div style="BORDER-RIGHT: rgb(204,204,204) 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: rgb(204,204,204) 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: rgb(204,204,204) 1px solid; WIDTH: 98%; PADDING-TOP: 4px; BORDER-BOTTOM: rgb(204,204,204) 1px solid; BACKGROUND-COLOR: rgb(238,238,238)">category2.getChildrenCategories().remove(category5); ????????category5.setParentCategory(null); ????????dao.removeProductCategory(category5.getId());</div> 仔细分析原因，最容易出现的三点问题是：

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[转载]org.hibernate.ObjectDeletedException: deleted object would be re-saved