Hi
I'm having troubles in obtaining my data from the getCurrentRowObject
becasue it returns only object and I cant cast it back to ArrayList. In my
entity class it is List<Category> parents = new ArrayList<Category>(); I
didnt get solutions from google. Can anyone please help me out??? I　really
need this to make my own decorator so that I can show that list of data in
the display:column.......Please help me. Many thanks..
======= Category.java ==========
import java.util.ArrayList;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.persistence.*;
/**
*
* @author xingxing
*/
@Entity
@Table(name="category")
public class Category extends BaseObject {
/**
*
*/
private static final long serialVersionUID = -2439698589359221687L;
private Long id;
private String name;
private String description;
private Date create_time;
private Date update_time;
private List<Category> children = new ArrayList<Category>();
private List<Category> parents = new ArrayList<Category>();
private String parent_name = "";
@Column(name="create_time", nullable=false)
public Date getCreate_time() {
return create_time;
}
public void setCreate_time(Date create_time) {
this.create_time = create_time;
}
@Column(name="description", length=2048)
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
@Id @GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="cid")
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Column(length=50, nullable=false)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getUpdate_time() {
return update_time;
}
@Column(name="update_time")
public void setUpdate_time(Date update_time) {
this.update_time = update_time;
}
/**
* @return the category_rel
*/
@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name="category_rel",
[EMAIL PROTECTED](name="parent_id")},
[EMAIL PROTECTED](name="child_id")}
)
public List<Category> getChildren() {
return children;
}
/**
* @param category_rel the category_rel to set
*/
public void setChildren(List<Category> children) {
this.children = children;
}
/**
* @return the parent_name
*/
@Transient
public String getParent_name() {
// return "cc";
return this.parent_name;
}
/**
* @param parent_name the parent_name to set
*/
public void setParent_name(String parent_name) {
this.parent_name = parent_name;
}
/**
* @return the parents
*/
@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name="category_rel",
[EMAIL PROTECTED](name="child_id")},
[EMAIL PROTECTED](name="parent_id")}
)
public List<Category> getParents() {
return parents;
}
/**
* @param parents the parents to set
*/
public void setParents(List<Category> parents) {
this.parents = parents;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final Category other = (Category) obj;
if (this.id != other.id && (this.id == null ||
!this.id.equals(other.id))) {
return false;
}
if (this.name != other.name && (this.name == null ||
!this.name.equals(other.name))) {
return false;
}
if (this.description != other.description && (this.description ==
null || !this.description.equals(other.description))) {
return false;
}
if (this.create_time != other.create_time && (this.create_time ==
null || !this.create_time.equals(other.create_time))) {
return false;
}
if (this.update_time != other.update_time && (this.update_time ==
null || !this.update_time.equals(other.update_time))) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 7;
hash = 23 * hash + (this.id != null ? this.id.hashCode() : 0);
hash = 23 * hash + (this.name != null ? this.name.hashCode() : 0);
hash = 23 * hash + (this.description != null ?
this.description.hashCode() : 0);
hash = 23 * hash + (this.create_time != null ?
this.create_time.hashCode() : 0);
hash = 23 * hash + (this.update_time != null ?
this.update_time.hashCode() : 0);
return hash;
}
@Override
public String toString() {
// throw new UnsupportedOperationException("Not supported yet.");
String retval = "";
retval = this.id + " " + this.name + " " + this.description + " (P) " +
this.parents.toString()+ " C " + this.children.toString();;
return retval;
}
}
=========== categoryList.jsp ==============
<%@ include file="/common/taglibs.jsp"%>
<head>
<title><fmt:message key="categoryList.title"/></title>
<meta name="heading" content="<fmt:message
key='categoryList.heading'/>"/>
<meta name="menu" content="CategoryMenu"/>
</head>
<c:set var="buttons">
<input type="button" style="margin-right: 5px" class="button"
onclick="location.href='<c:url value="/editCategory.html"/>'"
value="<fmt:message key="button.add"/>"/>
<input type="button" class="button" onclick="location.href='<c:url
value="/mainMenu.html"/>'"
value="<fmt:message key="button.done"/>"/>
</c:set>
<c:out value="${buttons}" escapeXml="false" />
<display:table name="categories" class="dataTable" requestURI=""
id="categoryList" export="true" pagesize="25"
decorator="org.saascentral.app.util.MyDecorator">
<display:column property="id" class="hidden" sortable="true"
href="editCategory.html" media="html"
paramId="id" paramProperty="id" titleKey="category.id"/>
<display:column property="id" media="csv excel xml pdf"
titleKey="category.id"/>
<display:column sortProperty="create_time" sortable="true"
titleKey="category.create_time">
<fmt:formatDate value="${categoryList.create_time}"
pattern="${datePattern}"/>
</display:column>
<display:column property="description" sortable="true"
titleKey="category.description"/>
<display:column property="name" sortable="true"
titleKey="category.name"/>
<display:column property="parent_name" sortable="true"
titleKey="Parent"/>
<display:column property="parents" sortable="true"
titleKey="Parentsss"/>
<display:column sortProperty="update_time" sortable="true"
titleKey="category.update_time">
<fmt:formatDate value="${categoryList.update_time}"
pattern="${datePattern}"/>
</display:column>
<display:setProperty name="paging.banner.item_name"><fmt:message
key="categoryList.category"/></display:setProperty>
<display:setProperty name="paging.banner.items_name"><fmt:message
key="categoryList.categories"/></display:setProperty>
<display:setProperty name="export.excel.filename"><fmt:message
key="categoryList.title"/>.xls</display:setProperty>
<display:setProperty name="export.csv.filename"><fmt:message
key="categoryList.title"/>.csv</display:setProperty>
<display:setProperty name="export.pdf.filename"><fmt:message
key="categoryList.title"/>.pdf</display:setProperty>
</display:table>
<c:out value="${buttons}" escapeXml="false" />
<script type="text/javascript">
highlightTableRows("categoryList");
</script>
============ CategoryAction.java ==========
package org.saascentral.app.webapp.action;
import java.util.List;
import org.saascentral.app.model.Category;
import org.saascentral.app.service.GenericManager;
import com.opensymphony.xwork2.Preparable;
public class CategoryAction extends BaseAction implements Preparable {
private GenericManager<Category, Long> categoryManager;
private List categories;
private Category category;
private Long id;
public void setCategoryManager(GenericManager<Category, Long>
categoryManager) {
this.categoryManager = categoryManager;
}
public List getCategories() {
return categories;
}
/**
* Grab the entity from the database before populating with request
parameters
*/
public void prepare() {
if (getRequest().getMethod().equalsIgnoreCase("post")) {
// prevent failures on new
String categoryId = getRequest().getParameter("category.id");
if (categoryId != null && !categoryId.equals("")) {
category = categoryManager.get(new Long(categoryId));
}
}
}
public String list() {
categories = categoryManager.getAll();
return SUCCESS;
}
public void setId(Long id) {
this. id = id;
}
public Category getCategory() {
return category;
}
public void setCategory(Category category) {
this.category = category;
}
public String delete() {
categoryManager.remove(category.getId());
saveMessage(getText("category.deleted"));
return SUCCESS;
}
public String edit() {
if (id != null) {
category = categoryManager.get(id);
} else {
category = new Category();
}
return SUCCESS;
}
public String save() throws Exception {
if (cancel != null) {
return "cancel";
}
if (delete != null) {
return delete();
}
boolean isNew = (category.getId() == null);
categoryManager.save(category);
String key = (isNew) ? "category.added" : "category.updated";
saveMessage(getText(key));
if (!isNew) {
return INPUT;
} else {
return SUCCESS;
}
}
}
Regards
xing
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