Android Open Source - SORM Creator

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License

The source code is released under:

MIT License

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Java Source Code

??package com.annotation.core;
/*from  ww w . ja  va 2  s .  co  m*/


import java.lang.annotation.Annotation;

import java.lang.reflect.Field;

import java.util.ArrayList;

import java.util.List;



import com.annotation.Unique;

import com.annotation.entity.ColumnInfo;

import com.annotation.entity.Sqlable;

import com.annotation.utils.ReflectionUtils;



/**

 * create talbe

 * 

 * @author Jayin Ton

 * 

 */

public class Creator implements Sqlable {

  private String _table;

  List<ColumnInfo> columnInfos;



  public Creator() {

    columnInfos = new ArrayList<ColumnInfo>();

  }



  public Creator from(Class<?> cls) {

    _table = ReflectionUtils.getTableName(cls);

    columnInfos = buildColumns(cls);

    return this;

  }



  private List<ColumnInfo> buildColumns(Class<?> cls) {

    Field[] fields = ReflectionUtils.getColumnFields(cls);

    List<ColumnInfo> list = new ArrayList<ColumnInfo>();

    for (Field field : fields) {

      String typeName = ReflectionUtils.getTypeName(field);

      String columnName = ReflectionUtils.getColumnName(field);

      StringBuffer constraint = null;

      if(columnName.equals("__id")){

        constraint = new StringBuffer().append("Primary Key").append(" ").append("AUTOINCREMENT").append(" ");

      }else{

        constraint = getConstraints(field);

      }

      ColumnInfo info = new ColumnInfo();

      info.setColumnName(columnName);

      info.setTypeName(typeName);

      info.setConstraint(constraint);

      list.add(info);

    }

    return list;



  }



  // expand in here

  private StringBuffer getConstraints(Field field) {

    StringBuffer sb = new StringBuffer();

    Annotation[] annotations = field.getAnnotations();

    for (Annotation a : annotations) {

      if (a.annotationType().equals(Unique.class)) {

        sb.append(a.annotationType().getSimpleName()).append(" ");

      } 

    }

    return sb;

  }



  public String build() {

    if (columnInfos.size() == 0) {

      throw new IllegalStateException(

          "there are no columns define for this table.");

    }

    StringBuffer builder = new StringBuffer();

    builder.append("Create Table").append(" ").append(_table).append(" ");

    builder.append("(");

    for (ColumnInfo info : columnInfos) {

      builder.append(info.build()).append(",");

    }

    builder.deleteCharAt(builder.length() - 1);

    builder.append(")");

    return builder.toString();

  }

}

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