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Code Issues Releases Wiki Activity

rebased with Marr.Data

Browse Source 
there is a broken test.
This commit is contained in:
Keivan Beigi 2013-05-27 16:35:53 -07:00
parent 6e6df842a0
commit 261ce772de
8 changed files with 199 additions and 58 deletions
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15
Marr.Data/QGen/Dialects/Dialect.cs
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@ -55,5 +55,20 @@ namespace Marr.Data.QGen.Dialects
return true;
}
}
public virtual string StartsWithFormat
{
get { return "({0} LIKE {1} + '%')"; }
}
public virtual string EndsWithFormat
{
get { return "({0} LIKE '%' + {1})"; }
}
public virtual string ContainsFormat
{
get { return "({0} LIKE '%' + {1} + '%')"; }
}
}
}

15
Marr.Data/QGen/Dialects/SqliteDialect.cs
View File

@ -14,5 +14,20 @@ namespace Marr.Data.QGen.Dialects
return "SELECT last_insert_rowid();";
}
}
public override string StartsWithFormat
{
get { return "({0} LIKE {1} || '%')"; }
}
public override string EndsWithFormat
{
get { return "({0} LIKE '%' || {1})"; }
}
public override string ContainsFormat
{
get { return "({0} LIKE '%' || {1} || '%')"; }
}
}
}

98
Marr.Data/QGen/QueryBuilder.cs
View File

@ -20,25 +20,31 @@ namespace Marr.Data.QGen
{
#region - Private Members -
private Dialects.Dialect _dialect;
private DataMapper _db;
private Dialects.Dialect _dialect;
private TableCollection _tables;
private WhereBuilder<T> _whereBuilder;
private SortBuilder<T> _sortBuilder;
private bool _useAltName = false;
private bool _isGraph = false;
private string _queryText;
private List<MemberInfo> _childrenToLoad;
private bool _isFromView = false;
private bool _isFromTable = false;
private bool _isJoin = false;
private bool _isManualQuery = false;
private bool _enablePaging = false;
private int _skip;
private int _take;
private string _queryText;
private List<MemberInfo> _childrenToLoad;
private SortBuilder<T> SortBuilder
{
get
{
// Lazy load
if (_sortBuilder == null)
_sortBuilder = new SortBuilder<T>(this, _db, _whereBuilder, _dialect, _tables, _useAltName);
{
bool useAltNames = _isFromView || _isGraph || _isJoin;
_sortBuilder = new SortBuilder<T>(this, _db, _whereBuilder, _dialect, _tables, useAltNames);
}
return _sortBuilder;
}
@ -98,14 +104,19 @@ namespace Marr.Data.QGen
if (string.IsNullOrEmpty(viewName))
throw new ArgumentNullException("view");
_useAltName = true;
_isFromView = true;
// Replace the base table with a view with tables
View view = new View(viewName, _tables.ToArray());
_tables.ReplaceBaseTable(view);
if (_tables[0] is View)
{
(_tables[0] as View).Name = viewName;
}
else
{
View view = new View(viewName, _tables.ToArray());
_tables.ReplaceBaseTable(view);
}
//// Override the base table name
//_tables[0].Name = view;
return this;
}
@ -118,7 +129,7 @@ namespace Marr.Data.QGen
if (string.IsNullOrEmpty(table))
throw new ArgumentNullException("view");
_useAltName = false;
_isFromTable = true;
// Override the base table name
_tables[0].Name = table;
@ -130,6 +141,7 @@ namespace Marr.Data.QGen
/// </summary>
public virtual QueryBuilder<T> QueryText(string queryText)
{
_isManualQuery = true;
_queryText = queryText;
return this;
}
@ -177,7 +189,6 @@ namespace Marr.Data.QGen
_tables.ReplaceBaseTable(view);
_isGraph = true;
_useAltName = true;
return this;
}
@ -237,7 +248,8 @@ namespace Marr.Data.QGen
// Generate a row count query
string where = _whereBuilder != null ? _whereBuilder.ToString() : string.Empty;
IQuery query = QueryFactory.CreateRowCountSelectQuery(_tables, _db, where, SortBuilder, _useAltName);
bool useAltNames = _isFromView || _isGraph || _isJoin;
IQuery query = QueryFactory.CreateRowCountSelectQuery(_tables, _db, where, SortBuilder, useAltNames);
string queryText = query.Generate();
_db.SqlMode = SqlModes.Text;
@ -255,15 +267,17 @@ namespace Marr.Data.QGen
{
SqlModes previousSqlMode = _db.SqlMode;
ValidateQuery();
BuildQueryOrAppendClauses();
if (_isGraph)
if (_isGraph || _isJoin)
{
_results = (List<T>)_db.QueryToGraph<T>(_queryText, EntGraph, _childrenToLoad);
}
else
{
_results = (List<T>)_db.Query<T>(_queryText, _results, _useAltName);
_results = (List<T>)_db.Query<T>(_queryText, _results, _isFromView);
}
// Return to previous sql mode
@ -272,6 +286,33 @@ namespace Marr.Data.QGen
return _results;
}
private void ValidateQuery()
{
if (_isManualQuery && _isFromView)
throw new InvalidOperationException("Cannot use FromView in conjunction with QueryText");
if (_isManualQuery && _isFromTable)
throw new InvalidOperationException("Cannot use FromTable in conjunction with QueryText");
if (_isManualQuery && _isJoin)
throw new InvalidOperationException("Cannot use Join in conjuntion with QueryText");
if (_isManualQuery && _enablePaging)
throw new InvalidOperationException("Cannot use Page, Skip or Take in conjunction with QueryText");
if (_isJoin && _isFromView)
throw new InvalidOperationException("Cannot use FromView in conjunction with Join");
if (_isJoin && _isFromTable)
throw new InvalidOperationException("Cannot use FromView in conjunction with Join");
if (_isJoin && _isGraph)
throw new InvalidOperationException("Cannot use Graph in conjunction with Join");
if (_isFromView && _isFromTable)
throw new InvalidOperationException("Cannot use FromView in conjunction with FromTable");
}
private void BuildQueryOrAppendClauses()
{
if (_queryText == null)
@ -302,14 +343,16 @@ namespace Marr.Data.QGen
// Generate a query
string where = _whereBuilder != null ? _whereBuilder.ToString() : string.Empty;
bool useAltNames = _isFromView || _isGraph || _isJoin;
IQuery query = null;
if (_enablePaging)
{
query = QueryFactory.CreatePagingSelectQuery(_tables, _db, where, SortBuilder, _useAltName, _skip, _take);
query = QueryFactory.CreatePagingSelectQuery(_tables, _db, where, SortBuilder, useAltNames, _skip, _take);
}
else
{
query = QueryFactory.CreateSelectQuery(_tables, _db, where, SortBuilder, _useAltName);
query = QueryFactory.CreateSelectQuery(_tables, _db, where, SortBuilder, useAltNames);
}
_queryText = query.Generate();
@ -324,10 +367,11 @@ namespace Marr.Data.QGen
private ColumnMapCollection GetColumns(IEnumerable<string> entitiesToLoad)
{
// If QueryToGraph<T> and no child load entities are specified, load all children
bool loadAllChildren = _useAltName && entitiesToLoad == null;
bool useAltNames = _isFromView || _isGraph || _isJoin;
bool loadAllChildren = useAltNames && entitiesToLoad == null;
// If Query<T>
if (!_useAltName)
if (!useAltNames)
{
return MapRepository.Instance.GetColumns(typeof(T));
}
@ -359,13 +403,17 @@ namespace Marr.Data.QGen
public virtual SortBuilder<T> Where<TObj>(Expression<Func<TObj, bool>> filterExpression)
{
_whereBuilder = new WhereBuilder<T>(_db.Command, _dialect, filterExpression, _tables, _useAltName, true);
bool useAltNames = _isFromView || _isGraph;
bool addTablePrefixToColumns = true;
_whereBuilder = new WhereBuilder<T>(_db.Command, _dialect, filterExpression, _tables, useAltNames, addTablePrefixToColumns);
return SortBuilder;
}
public virtual SortBuilder<T> Where(Expression<Func<T, bool>> filterExpression)
{
_whereBuilder = new WhereBuilder<T>(_db.Command, _dialect, filterExpression, _tables, _useAltName, true);
bool useAltNames = _isFromView || _isGraph;
bool addTablePrefixToColumns = true;
_whereBuilder = new WhereBuilder<T>(_db.Command, _dialect, filterExpression, _tables, useAltNames, addTablePrefixToColumns);
return SortBuilder;
}
@ -379,7 +427,8 @@ namespace Marr.Data.QGen
whereClause = whereClause.Insert(0, " WHERE ");
}
_whereBuilder = new WhereBuilder<T>(whereClause, _useAltName);
bool useAltNames = _isFromView || _isGraph || _isJoin;
_whereBuilder = new WhereBuilder<T>(whereClause, useAltNames);
return SortBuilder;
}
@ -491,20 +540,21 @@ namespace Marr.Data.QGen
public virtual QueryBuilder<T> Join<TLeft, TRight>(JoinType joinType, Expression<Func<TLeft, IEnumerable<TRight>>> rightEntity, Expression<Func<TLeft, TRight, bool>> filterExpression)
{
_isJoin = true;
MemberInfo rightMember = (rightEntity.Body as MemberExpression).Member;
return this.Join(joinType, rightMember, filterExpression);
}
public virtual QueryBuilder<T> Join<TLeft, TRight>(JoinType joinType, Expression<Func<TLeft, TRight>> rightEntity, Expression<Func<TLeft, TRight, bool>> filterExpression)
{
_isJoin = true;
MemberInfo rightMember = (rightEntity.Body as MemberExpression).Member;
return this.Join(joinType, rightMember, filterExpression);
}
public virtual QueryBuilder<T> Join<TLeft, TRight>(JoinType joinType, MemberInfo rightMember, Expression<Func<TLeft, TRight, bool>> filterExpression)
{
_useAltName = true;
_isGraph = true;
_isJoin = true;
if (!_childrenToLoad.ContainsMember(rightMember))
_childrenToLoad.Add(rightMember);

11
Marr.Data/QGen/SortBuilder.cs
View File

@ -170,15 +170,6 @@ namespace Marr.Data.QGen
#endregion
#region - Count -
public virtual int Count()
{
return _baseBuilder.GetRowCount();
}
#endregion
#region - ToList / ToString / BuildQuery -
public virtual List<T> ToList()
@ -218,7 +209,7 @@ namespace Marr.Data.QGen
string columnName = DataHelper.GetColumnName(sort.DeclaringType, sort.PropertyName, useAltName);
if (!_useAltName)
if (!useAltName)
sb.Append(_dialect.CreateToken(string.Format("{0}.{1}", table.Alias, columnName)));
else

56
Marr.Data/QGen/SqlitePagingQueryDecorator.cs
View File

@ -30,6 +30,19 @@ namespace Marr.Data.QGen
public string Generate()
{
if (_innerQuery.IsView || _innerQuery.IsJoin)
{
return ComplexPaging();
}
else
{
return SimplePaging();
}
}
private string SimplePaging()
{
// Create paged query
StringBuilder sql = new StringBuilder();
_innerQuery.BuildSelectClause(sql);
@ -42,6 +55,28 @@ namespace Marr.Data.QGen
return sql.ToString();
}
private string ComplexPaging()
{
var baseTable = _innerQuery.Tables.First();
StringBuilder sql = new StringBuilder();
_innerQuery.BuildSelectClause(sql);
sql.Append(" FROM (");
BuildSimpleInnerSelect(sql);
_innerQuery.BuildFromClause(sql);
_innerQuery.BuildWhereClause(sql);
sql.AppendLine(String.Format("LIMIT {0},{1}", _skip, _take));
sql.AppendFormat(") AS {0} ", _innerQuery.Dialect.CreateToken(baseTable.Alias));
_innerQuery.BuildJoinClauses(sql);
_innerQuery.BuildOrderClause(sql);
return sql.ToString();
}
public void BuildSelectClause(StringBuilder sql)
{
List<string> appended = new List<string>();
@ -86,5 +121,26 @@ namespace Marr.Data.QGen
}
}
}
private void BuildSimpleInnerSelect(StringBuilder sql)
{
sql.Append("SELECT ");
int startIndex = sql.Length;
// COLUMNS
var join = _innerQuery.Tables.First();
for (int i = 0; i < join.Columns.Count; i++)
{
var c = join.Columns[i];
if (sql.Length > startIndex)
sql.Append(",");
string token = c.ColumnInfo.Name;
sql.Append(_innerQuery.Dialect.CreateToken(token));
}
}
}
}

58
Marr.Data/QGen/WhereBuilder.cs
View File

@ -24,7 +24,7 @@ namespace Marr.Data.QGen
private MapRepository _repos;
private DbCommand _command;
private string _paramPrefix;
private bool isLeftSide = true;
private bool _isLeftSide = true;
protected bool _useAltName;
protected Dialect _dialect;
protected StringBuilder _sb;
@ -67,12 +67,12 @@ namespace Marr.Data.QGen
{
_sb.Append("(");
isLeftSide = true;
_isLeftSide = true;
Visit(expression.Left);
_sb.AppendFormat(" {0} ", Decode(expression.NodeType));
_sb.AppendFormat(" {0} ", Decode(expression));
isLeftSide = false;
_isLeftSide = false;
Visit(expression.Right);
_sb.Append(")");
@ -107,7 +107,7 @@ namespace Marr.Data.QGen
protected override Expression VisitMemberAccess(MemberExpression expression)
{
if (isLeftSide)
if (_isLeftSide)
{
string fqColumn = GetFullyQualifiedColumnName(expression.Member, expression.Expression.Type);
_sb.Append(fqColumn);
@ -127,12 +127,20 @@ namespace Marr.Data.QGen
protected override Expression VisitConstant(ConstantExpression expression)
{
// Add parameter to Command.Parameters
string paramName = string.Concat(_paramPrefix, "P", _command.Parameters.Count.ToString());
if (expression.Value != null)
{
// Add parameter to Command.Parameters
string paramName = string.Concat(_paramPrefix, "P", _command.Parameters.Count.ToString());
_sb.Append(paramName);
_sb.Append(paramName);
var parameter = new ParameterChainMethods(_command, paramName, expression.Value).Parameter;
}
else
{
_sb.Append("NULL");
}
var parameter = new ParameterChainMethods(_command, paramName, expression.Value).Parameter;
return expression;
}
@ -182,12 +190,7 @@ namespace Marr.Data.QGen
}
string columnName = DataHelper.GetColumnName(declaringType, member.Name, _useAltName);
if (!_useAltName)
return _dialect.CreateToken(string.Format("{0}.{1}", table.Alias, columnName));
else
return _dialect.CreateToken(string.Format("{0}", columnName));
return _dialect.CreateToken(string.Format("{0}.{1}", table.Alias, columnName));
}
else
{
@ -196,9 +199,22 @@ namespace Marr.Data.QGen
}
}
private string Decode(ExpressionType expType)
private string Decode(BinaryExpression expression)
{
switch (expType)
bool isRightSideNullConstant = expression.Right.NodeType ==
ExpressionType.Constant &&
((ConstantExpression)expression.Right).Value == null;
if (isRightSideNullConstant)
{
switch (expression.NodeType)
{
case ExpressionType.Equal: return "IS";
case ExpressionType.NotEqual: return "IS NOT";
}
}
switch (expression.NodeType)
{
case ExpressionType.AndAlso: return "AND";
case ExpressionType.And: return "AND";
@ -210,7 +226,7 @@ namespace Marr.Data.QGen
case ExpressionType.NotEqual: return "<>";
case ExpressionType.OrElse: return "OR";
case ExpressionType.Or: return "OR";
default: throw new NotSupportedException(string.Format("{0} statement is not supported", expType.ToString()));
default: throw new NotSupportedException(string.Format("{0} statement is not supported", expression.NodeType.ToString()));
}
}
@ -223,7 +239,7 @@ namespace Marr.Data.QGen
MemberExpression memberExp = (body.Object as MemberExpression);
string fqColumn = GetFullyQualifiedColumnName(memberExp.Member, memberExp.Expression.Type);
_sb.AppendFormat("({0} LIKE '%' + {1} + '%')", fqColumn, paramName);
_sb.AppendFormat(_dialect.ContainsFormat, fqColumn, paramName);
}
private void Write_StartsWith(MethodCallExpression body)
@ -235,7 +251,7 @@ namespace Marr.Data.QGen
MemberExpression memberExp = (body.Object as MemberExpression);
string fqColumn = GetFullyQualifiedColumnName(memberExp.Member, memberExp.Expression.Type);
_sb.AppendFormat("({0} LIKE {1} + '%')", fqColumn, paramName);
_sb.AppendFormat(_dialect.StartsWithFormat, fqColumn, paramName);
}
private void Write_EndsWith(MethodCallExpression body)
@ -247,7 +263,7 @@ namespace Marr.Data.QGen
MemberExpression memberExp = (body.Object as MemberExpression);
string fqColumn = GetFullyQualifiedColumnName(memberExp.Member, memberExp.Expression.Type);
_sb.AppendFormat("({0} LIKE '%' + {1})", fqColumn, paramName);
_sb.AppendFormat(_dialect.EndsWithFormat, fqColumn, paramName);
}
/// <summary>

2
Marr.Data/Reflection/CachedReflectionStrategy.cs
View File

@ -72,7 +72,7 @@ namespace Marr.Data.Reflection
}
/// <summary>
/// Instantiantes a type using the FastReflector library for increased speed.
/// Instantiantes a type using the Fasterflect library for increased speed.
/// </summary>
/// <param name="type"></param>
/// <returns></returns>

2
Marr.Data/Reflection/ReflectionHelper.cs
View File

@ -16,9 +16,7 @@ License along with this library. If not, see <http://www.gnu.org/licenses/>. */
using System;
using System.Reflection;
// ReSharper disable CheckNamespace
namespace Marr.Data
// ReSharper restore CheckNamespace
{
public class ReflectionHelper
{