com.avaje.ebeaninternal.server.deploy.parse.AnnotationBase Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of ebean Show documentation

Ebean

There is a newer version: 2.8.1

package com.avaje.ebeaninternal.server.deploy.parse;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

import com.avaje.ebean.config.NamingConvention;
import com.avaje.ebean.config.dbplatform.DatabasePlatform;
import com.avaje.ebeaninternal.server.deploy.meta.DeployBeanProperty;

/**
 * Provides some base methods for processing deployment annotations.
 */
public abstract class AnnotationBase {

	protected final DatabasePlatform databasePlatform;
	protected final NamingConvention namingConvention;
	protected final DeployUtil util;
	
	protected AnnotationBase(DeployUtil util) {
		this.util = util;
		this.databasePlatform = util.getDbPlatform();
		this.namingConvention = util.getNamingConvention();
	}
	
    /**
     * read the deployment annotations.
     */
    public abstract void parse();
    
	/**
	 * Checks string is null or empty .
	 */
	protected boolean isEmpty(String s) {
		if (s == null || s.trim().length() == 0) {
			return true;
		}
		return false;
	}
	
	   
    /**
     * Return the annotation for the property.
     * 
     * Looks first at the field and then at the getter method.
     * 
     */
	protected  T get(DeployBeanProperty prop, Class annClass) {
        T a = null;
        Field field = prop.getField();
        if (field != null){
        	a = field.getAnnotation(annClass);
        }
        if (a == null) {
            Method m = prop.getReadMethod();
            if (m != null) {
                a = m.getAnnotation(annClass);
            }
        }
        return a;
    }
    
    /**
	 * Return the annotation for the property.
	 * 
	 * Looks first at the field and then at the getter method. then at class level.
	 * 
	 */
	protected  T find(DeployBeanProperty prop, Class annClass) {
		T a = get(prop, annClass);
		if (a == null) {
			a = prop.getOwningType().getAnnotation(annClass);
		}
		return a;
	}
	
	
}