// Generated by Together
package oisoft.togetherx.scripts.SQL.impl;

import java.util.Enumeration;
import java.sql.Types;

import oisoft.togetherx.scriptapi.UML.UMLAttribute;

import oisoft.togetherx.scripts.SQL.SQLTable;
import oisoft.togetherx.scripts.SQL.SQLColumn;

class ColumnImpl implements SQLColumn {
  private TableImpl myTable;
  private UMLAttribute myAttribute;
  private String myName = null;
  private boolean myNullable;
  private boolean myForcePrimaryKey;
  private boolean myForeignKey;

  public SQLTable getTable(){
    return myTable;
  }
  public String getName(){
    if( myName == null ){
      myName = myTable.createColumnName(this);
    }
    return myName;
  }
  /**
    @todo Implement it!
  */
  public short getType(){
    return 0;
  }
  /**
    @todo Create real implementation using getType and type-mapping settings
  */
  public String getTypeName(){
    return myAttribute.getProperty(tagNameSQLType());
  }
  public int getSize(){
    String tagValue = myAttribute.getProperty(tagNameSQLSize());
    if(tagValue != null){
      try{
        return Integer.parseInt(tagValue);
      }
      catch(NumberFormatException err){
        err.printStackTrace();
      }
    }
    // Size not set by some reason.
    return 0;
  }
  public boolean isNullAllowed(){
    return myNullable;
  }
  public int getDecimalDigits(){
    String tagValue = myAttribute.getProperty(tagNameSQLDigits());
    if(tagValue != null){
      try{
        return Integer.parseInt(tagValue);
      }
      catch(NumberFormatException err){
        err.printStackTrace();
      }
    }
    // Size not set by some reason.
    return 0;
  }
  public String getRemarks(){
    return "";
  }
  /**
    @todo Implement it!
  */
  public Enumeration getConstraints(){
    return new EmptyEnumeration();
  }

  ColumnImpl(UMLAttribute attribute, boolean nullable, boolean forcePrimaryKey, TableImpl table){
    this( attribute, nullable, forcePrimaryKey, table,
      !attribute.getContainingClass().equals(table.getUMLClass())
    );
  }

  ColumnImpl(UMLAttribute attribute, boolean nullable, boolean forcePrimaryKey, TableImpl table, boolean foreignKey){
    myAttribute = attribute;
    myNullable = nullable;
    myForcePrimaryKey = forcePrimaryKey;
    myTable = table;
    myForeignKey = foreignKey;
  }

  UMLAttribute getAttribute(){
    return myAttribute;
  }

  boolean isForeignKey(){
    //return !myAttribute.getContainingClass().equals(myTable.getUMLClass());
    return myForeignKey;
  }

  boolean isPrimaryKey(){
    return myForcePrimaryKey
      || (!isForeignKey() && getAttribute().hasProperty(getTags().attributePrimaryKey()));
  }

  SQLDiagramTags getTags(){
    return myTable.getTags();
  }

  private String tagNameSQLType(){
    return getTags().attributeSQLType();
  }
  private String tagNameSQLSize(){
    return getTags().attributeLength();
  }
  private String tagNameSQLDigits(){
    return getTags().attributePrecision();
  }
}