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SQLite Compare Utility

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21 Feb 2015LGPL35 min read 280.8K   37.1K   131  
Utility for comparing two SQLite database files for both structure and data
using System;
using System.Collections.Generic;
using System.Text;

namespace SQLiteParser
{
    public class SQLitePrimaryKeyColumnConstraint : SQLiteColumnConstraint
    {
        private SQLitePrimaryKeyColumnConstraint(string name)
            : base(name)
        {
        }

        public SQLitePrimaryKeyColumnConstraint(string name, SQLiteSortOrder order, SQLiteResolveAction conf, bool autoincrement)
            : base(name)
        {
            _order = order;
            _conf = conf;
            _autoincrement = autoincrement;
        }

        public bool IsAutoincrement
        {
            get { return _autoincrement; }
            set { _autoincrement = value; }
        }

        public SQLiteSortOrder SortOrder
        {
            get { return _order; }
            set { _order = value; }
        }

        public SQLiteResolveAction ResolveAction
        {
            get { return _conf; }
            set { _conf = value; }
        }

        public override bool Equals(object obj)
        {
            if (obj == null)
                return false;

            SQLitePrimaryKeyColumnConstraint dst = obj as SQLitePrimaryKeyColumnConstraint;
            if (dst == null)
                return false;

            if (_autoincrement != dst._autoincrement || _order != dst._order || _conf != dst._conf)
                return false;

            return base.Equals(obj);
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();
            if (ConstraintName != null)
                sb.Append("CONSTRAINT " + ConstraintName + " ");
            sb.Append("PRIMARY KEY");
            if (_order == SQLiteSortOrder.Ascending)
                sb.Append(" ASC");
            else if (_order == SQLiteSortOrder.Descending)
                sb.Append(" DESC");
            if (_conf != SQLiteResolveAction.None)
                sb.Append(" " + Utils.GetConflictClauseString(_conf));
            if (_autoincrement)
                sb.Append(" AUTOINCREMENT");
            return sb.ToString();
        }

        public override object Clone()
        {
            SQLitePrimaryKeyColumnConstraint res = new SQLitePrimaryKeyColumnConstraint(ConstraintName);
            res._autoincrement = _autoincrement;
            res._order = _order;
            res._conf = _conf;
            return res;
        }

        private bool _autoincrement;
        private SQLiteSortOrder _order;
        private SQLiteResolveAction _conf;
    }

    public enum SQLiteSortOrder
    {
        None = 0,

        Ascending = 1,

        Descending = 2,
    }
}

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License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)


Written By
Software Developer
Israel Israel
My name is Liron Levi and I'm developing software for fun & profit for 15 years already.

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