allprocessor.java

EasyJWeb是基于java技术

package com.easyjf.generator;

import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.persistence.Embedded;
import javax.persistence.Entity;
import javax.persistence.Id;

import org.apache.velocity.context.Context;

import com.easyjf.beans.BeanUtils;
import com.easyjf.container.annonation.FormPO;
import com.easyjf.util.StringUtils;
import com.easyjf.web.tools.generator.TemplateProcess;

public class AllProcessor implements TemplateProcess {
	private String beanClass;

	private String packageName;

	public String getPackageName() {
		return packageName;
	}

	public void setPackageName(String packageName) {
		this.packageName = packageName;
	}

	public String getBeanClass() {
		return beanClass;
	}

	public void setBeanClass(String beanClass) {
		this.beanClass = beanClass;
	}

	@SuppressWarnings( { "unchecked", "deprecation" })
	public void process(Context context) throws Exception {
		Class bean = Class.forName(getBeanClass());
		if (bean.isAnnotationPresent(Embedded.class)) {
			return;
		}

		if (bean != null && bean.isAnnotationPresent(Entity.class)) {
			String domainName = bean.getSimpleName();		
			FormPO af =(FormPO)bean.getAnnotation(FormPO.class);			
			context.put("domainLabel", (af!=null&&af.label()!=null)?af.label():domainName);
			context.put("domainName", domainName);
			context.put("nowTime", new java.util.Date().toLocaleString());
			String domain = domainName.substring(0, 1).toLowerCase()
					+ domainName.substring(1);
			context.put("domain", domain);

			List<Map> fields = new ArrayList<Map>();
			List<String> complexFields = new ArrayList<String>();
			for (Field field : bean.getDeclaredFields()) {
				if (field.getName().equals("status")) {
					continue;
				}
				if (resovleGenerAnno(field)) {
					continue;
				}
				if (isSimpleType(field.getType())) {
					fields.add(parseField(field));
				} else if (isComplexFields(field.getType())) {
					complexFields.add(field.getName());
				}
				resovleIdAnno(context, fields, field);
				resovleEmbed(fields, complexFields, field);
			}
			context.put("fields", fields);
			context.put("complexFields", complexFields);
			context.put("packageName", packageName);
			String locath = packageName
					.substring(packageName.lastIndexOf(".") + 1);
			context.put("locath", locath);
		}
	}

	@SuppressWarnings("unchecked")
	private Map parseField(Field field) {
		Map map = new HashMap();
		map.put("name", field.getName());
		map.put("lable", field.getName());
		com.easyjf.container.annonation.Field af = field
				.getAnnotation(com.easyjf.container.annonation.Field.class);
		if (af != null) {
			if (StringUtils.hasLength(af.name()))
				map.put("lable", af.name());
		}
		return map;
	}

	@SuppressWarnings("unchecked")
	private void resovleEmbed(List<Map> fields, List<String> complexFields,
			Field field) {
		if (field.isAnnotationPresent(Embedded.class)) {
			for (Field f : field.getType().getDeclaredFields()) {
				if (field.getName().equals("status")) {
					continue;
				}
				if (resovleGenerAnno(field)) {
					continue;
				}
				if (isSimpleType(f.getType())) {
					fields.add(parseField(f));
				}
			}
			complexFields.remove(complexFields.size() - 1);
		}
	}

	private boolean resovleGenerAnno(Field field) {
		if (field
				.isAnnotationPresent(com.easyjf.container.annonation.Field.class)) {
			com.easyjf.container.annonation.Field f = field
					.getAnnotation(com.easyjf.container.annonation.Field.class);
			boolean gen = f.gener();
			return !gen;
		}
		return false;
	}

	@SuppressWarnings("unchecked")
	private void resovleIdAnno(Context context, List<Map> fields, Field field) {
		if (field.isAnnotationPresent(Id.class)) {
			fields.remove(fields.size() - 1);
			String fieldName = field.getName();
			fieldName = fieldName.substring(0, 1).toUpperCase()
					+ fieldName.substring(1);
			context.put("id", fieldName);
		}
	}

	@SuppressWarnings("unchecked")
	private boolean isSimpleType(Class clazz) {
		if (BeanUtils.isSimpleProperty(clazz)) {
			return true;
		} else if (Date.class.isAssignableFrom(clazz)) {
			return true;
		}

		return false;
	}

	@SuppressWarnings("unchecked")
	private boolean isComplexFields(Class clazz) {
		if (Collection.class.isAssignableFrom(clazz)) {
			return false;
		}
		if (Map.class.isAssignableFrom(clazz)) {
			return false;
		}
		return true;
	}

}