FormFactory.java

package com.x.cms.assemble.control.factory;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.lang3.StringUtils;

import com.x.base.core.project.exception.ExceptionWhen;
import com.x.base.core.project.tools.ListTools;
import com.x.cms.assemble.control.AbstractFactory;
import com.x.cms.assemble.control.Business;
import com.x.cms.core.entity.element.Form;
import com.x.cms.core.entity.element.Form_;
import com.x.cms.core.entity.tools.CriteriaBuilderTools;

/**
 * 分类表单模板信息管理表基础功能服务类
 * 
 * @author O2LEE
 */
public class FormFactory extends AbstractFactory {

	public FormFactory( Business business ) throws Exception {
		super(business);
	}

	/**
	 * @param id
	 * @return Form
	 * @throws Exception
	 */
	//@MethodDescribe("获取指定Id的Form文件附件信息对象")
	public Form get( String id ) throws Exception {
		return this.entityManagerContainer().find( id, Form.class, ExceptionWhen.none );
	}
	
	/**
	 * @return List：String
	 * @throws Exception
	 */
	//@MethodDescribe("列示全部的Form文件附件信息ID列表")
	public List<String> listAll() throws Exception {
		EntityManager em = this.entityManagerContainer().get( Form.class );
		CriteriaBuilder cb = em.getCriteriaBuilder();
		CriteriaQuery<String> cq = cb.createQuery(String.class);
		Root<Form> root = cq.from( Form.class );
		cq.select(root.get(Form_.id));
		return em.createQuery(cq).getResultList();
	}
	
	/**
	 * 
	 * @param ids 需要查询的ID列表
	 * @return List：Form
	 * @throws Exception
	 */
	//@MethodDescribe("列示指定Id的Form文件附件信息ID列表")
//	public List<Form> list(List<String> ids) throws Exception {
//		if(ListTools.isEmpty( ids )) {
//			return null;
//		}
//		EntityManager em = this.entityManagerContainer().get( Form.class );
//		CriteriaBuilder cb = em.getCriteriaBuilder();
//		CriteriaQuery<Form> cq = cb.createQuery( Form.class );
//		Root<Form> root = cq.from( Form.class );
//		Predicate p = root.get(Form_.id).in(ids);
//		return em.createQuery(cq.where(p)).getResultList();
//	}
	
	/**
	 * 列示指定应用的所有表单模板信息ID列表
	 * @param doucmentId 指定的文档ID
	 * @return
	 * @throws Exception 
	 */
	//@MethodDescribe("列示指定分类的所有表单模板信息ID列表")
	public List<String> listByAppId( String appId ) throws Exception {		
		if( StringUtils.isEmpty(appId) ){
			throw new Exception("内容管理listByAppId方法不接受appId为空的查询操作！");
		}
		EntityManager em = this.entityManagerContainer().get( Form.class );
		CriteriaBuilder cb = em.getCriteriaBuilder();
		CriteriaQuery<String> cq = cb.createQuery(String.class);
		Root<Form> root = cq.from( Form.class );
		cq.select(root.get(Form_.id));
		Predicate p = cb.equal(root.get( Form_.appId ), appId);
		return em.createQuery(cq.where(p)).getResultList();
	}
	
	public List<Form> listFormByAppId( String appId ) throws Exception {		
		if( StringUtils.isEmpty(appId) ){
			throw new Exception("内容管理listByAppId方法不接受appId为空的查询操作！");
		}
		EntityManager em = this.entityManagerContainer().get( Form.class );
		CriteriaBuilder cb = em.getCriteriaBuilder();
		CriteriaQuery<Form> cq = cb.createQuery(Form.class);
		Root<Form> root = cq.from( Form.class );
		Predicate p = cb.equal(root.get( Form_.appId ), appId);
		return em.createQuery(cq.where(p)).getResultList();
	}

	/**
	 * 根据栏目ID以及表单的标识 获取一个表单对象
	 * @param appId 栏目ID
	 * @param formFlag 表单标识
	 * @return
	 * @throws Exception
	 */
	public Form getWithAppInfo(String appId, String formFlag) throws Exception {
		if( StringUtils.isEmpty(appId) ){
			throw new Exception("appId can not empty！");
		}
		if( StringUtils.isEmpty(formFlag) ){
			throw new Exception("formFlag can not empty！");
		}
		EntityManager em = this.entityManagerContainer().get( Form.class );
		CriteriaBuilder cb = em.getCriteriaBuilder();
		CriteriaQuery<Form> cq = cb.createQuery(Form.class);
		Root<Form> root = cq.from( Form.class );
		Predicate appPre = cb.equal( root.get( Form_.appId ), appId );
		Predicate p = CriteriaBuilderTools.predicate_or( cb, cb.equal( root.get( Form_.id ), formFlag ), cb.equal( root.get( Form_.name ), formFlag ) );
//		p = CriteriaBuilderTools.predicate_or( cb, cb.equal( root.get( Form_.alias ), formFlag ), p );				
		p = CriteriaBuilderTools.predicate_and( cb, appPre, p );
		List<Form> list = em.createQuery(cq.where(p)).getResultList();		
		return ListTools.isEmpty( list ) ? null : list.get( 0 );
	}
}