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

There is a newer version: 9.5.1

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) {
    return s == null || s.trim().isEmpty();
  }


  /**
   * 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;
  }


}