private string IntroduceRequiredLocalVariables(
EntityType entityType,
DbInsertCommandTree commandTree)
{
List <EdmProperty> list = entityType.KeyProperties.Where <EdmProperty>((Func <EdmProperty, bool>)(p => p.IsStoreGeneratedIdentity)).ToList <EdmProperty>();
SqlStringBuilder commandText = new SqlStringBuilder()
{
UpperCaseKeywords = true
};
if (list.Any <EdmProperty>())
{
foreach (EdmProperty edmProperty in list)
{
commandText.Append(commandText.Length == 0 ? "DECLARE " : ", ");
commandText.Append("@");
commandText.Append(edmProperty.Name);
commandText.Append(" ");
commandText.Append(DmlSqlGenerator.GetVariableType(this._sqlGenerator, (EdmMember)edmProperty));
}
commandText.AppendLine();
DmlSqlGenerator.ExpressionTranslator translator = new DmlSqlGenerator.ExpressionTranslator(commandText, (DbModificationCommandTree)commandTree, true, this._sqlGenerator, (ICollection <EdmProperty>)entityType.KeyProperties, true);
DmlSqlGenerator.GenerateReturningSql(commandText, (DbModificationCommandTree)commandTree, entityType, translator, commandTree.Returning, DmlSqlGenerator.UseGeneratedValuesVariable(commandTree, this._sqlGenerator.SqlVersion));
commandText.AppendLine();
commandText.AppendLine();
}
return(commandText.ToString());
}
internal static string GenerateUpdateSql(
DbUpdateCommandTree tree,
SqlGenerator sqlGenerator,
out List <SqlParameter> parameters,
bool generateReturningSql = true,
bool upperCaseKeywords = true)
{
SqlStringBuilder commandText = new SqlStringBuilder(256)
{
UpperCaseKeywords = upperCaseKeywords
};
DmlSqlGenerator.ExpressionTranslator translator = new DmlSqlGenerator.ExpressionTranslator(commandText, (DbModificationCommandTree)tree, null != tree.Returning, sqlGenerator, (ICollection <EdmProperty>)null, true);
if (tree.SetClauses.Count == 0)
{
commandText.AppendKeyword("declare ");
commandText.AppendLine("@p int");
}
commandText.AppendKeyword("update ");
tree.Target.Expression.Accept((DbExpressionVisitor)translator);
commandText.AppendLine();
bool flag = true;
commandText.AppendKeyword("set ");
foreach (DbSetClause setClause in (IEnumerable <DbModificationClause>)tree.SetClauses)
{
if (flag)
{
flag = false;
}
else
{
commandText.Append(", ");
}
setClause.Property.Accept((DbExpressionVisitor)translator);
commandText.Append(" = ");
setClause.Value.Accept((DbExpressionVisitor)translator);
}
if (flag)
{
commandText.Append("@p = 0");
}
commandText.AppendLine();
commandText.AppendKeyword("where ");
tree.Predicate.Accept((DbExpressionVisitor)translator);
commandText.AppendLine();
if (generateReturningSql)
{
DmlSqlGenerator.GenerateReturningSql(commandText, (DbModificationCommandTree)tree, (EntityType)null, translator, tree.Returning, false);
}
parameters = translator.Parameters;
return(commandText.ToString());
}
private string IntroduceRequiredLocalVariables(EntityType entityType, DbInsertCommandTree commandTree)
{
DebugCheck.NotNull(entityType);
DebugCheck.NotNull(commandTree);
var storeGeneratedKeys
= entityType
.KeyProperties
.Where(p => p.IsStoreGeneratedIdentity)
.ToList();
var sql = new SqlStringBuilder {
UpperCaseKeywords = true
};
if (storeGeneratedKeys.Any())
{
foreach (var keyProperty in storeGeneratedKeys)
{
sql.Append(sql.Length == 0 ? "DECLARE " : ", ");
sql.Append("@");
sql.Append(keyProperty.Name);
sql.Append(" ");
sql.Append(DmlSqlGenerator.GetVariableType(_sqlGenerator, keyProperty));
}
sql.AppendLine();
var translator
= new DmlSqlGenerator.ExpressionTranslator(
sql,
commandTree,
true,
_sqlGenerator,
entityType.KeyProperties);
DmlSqlGenerator.GenerateReturningSql(
sql,
commandTree,
entityType,
translator,
commandTree.Returning,
DmlSqlGenerator.UseGeneratedValuesVariable(commandTree, _sqlGenerator.SqlVersion));
sql.AppendLine();
sql.AppendLine();
}
return(sql.ToString());
}
internal static string GenerateDeleteSql(
DbDeleteCommandTree tree,
SqlGenerator sqlGenerator,
out List <SqlParameter> parameters,
bool upperCaseKeywords = true,
bool createParameters = true)
{
SqlStringBuilder commandText = new SqlStringBuilder(256)
{
UpperCaseKeywords = upperCaseKeywords
};
DmlSqlGenerator.ExpressionTranslator expressionTranslator = new DmlSqlGenerator.ExpressionTranslator(commandText, (DbModificationCommandTree)tree, false, sqlGenerator, (ICollection <EdmProperty>)null, createParameters);
commandText.AppendKeyword("delete ");
tree.Target.Expression.Accept((DbExpressionVisitor)expressionTranslator);
commandText.AppendLine();
commandText.AppendKeyword("where ");
tree.Predicate.Accept((DbExpressionVisitor)expressionTranslator);
parameters = expressionTranslator.Parameters;
return(commandText.ToString());
}
private string IntroduceRequiredLocalVariables(EntityType entityType, DbInsertCommandTree commandTree)
{
DebugCheck.NotNull(entityType);
DebugCheck.NotNull(commandTree);
var storeGeneratedKeys
= entityType
.KeyProperties
.Where(p => p.IsStoreGeneratedIdentity)
.ToList();
var sql = new SqlStringBuilder { UpperCaseKeywords = true };
if (storeGeneratedKeys.Any())
{
foreach (var keyProperty in storeGeneratedKeys)
{
sql.Append(sql.Length == 0 ? "DECLARE " : ", ");
sql.Append("@");
sql.Append(keyProperty.Name);
sql.Append(" ");
sql.Append(DmlSqlGenerator.GetVariableType(_sqlGenerator, keyProperty));
}
sql.AppendLine();
var translator
= new DmlSqlGenerator.ExpressionTranslator(
sql,
commandTree,
true,
_sqlGenerator,
entityType.KeyProperties);
DmlSqlGenerator.GenerateReturningSql(
sql,
commandTree,
entityType,
translator,
commandTree.Returning,
DmlSqlGenerator.UseGeneratedValuesVariable(commandTree, _sqlGenerator.SqlVersion));
sql.AppendLine();
sql.AppendLine();
}
return sql.ToString();
}
internal static string GenerateInsertSql(
DbInsertCommandTree tree,
SqlGenerator sqlGenerator,
out List <SqlParameter> parameters,
bool generateReturningSql = true,
bool upperCaseKeywords = true,
bool createParameters = true)
{
SqlStringBuilder commandText = new SqlStringBuilder(256)
{
UpperCaseKeywords = upperCaseKeywords
};
DmlSqlGenerator.ExpressionTranslator translator = new DmlSqlGenerator.ExpressionTranslator(commandText, (DbModificationCommandTree)tree, null != tree.Returning, sqlGenerator, (ICollection <EdmProperty>)null, createParameters);
bool useGeneratedValuesVariable = DmlSqlGenerator.UseGeneratedValuesVariable(tree, sqlGenerator.SqlVersion);
EntityType elementType = (EntityType)((DbScanExpression)tree.Target.Expression).Target.ElementType;
if (useGeneratedValuesVariable)
{
commandText.AppendKeyword("declare ").Append("@generated_keys").Append(" table(");
bool flag = true;
foreach (EdmMember keyMember in elementType.KeyMembers)
{
if (flag)
{
flag = false;
}
else
{
commandText.Append(", ");
}
commandText.Append(DmlSqlGenerator.GenerateMemberTSql(keyMember)).Append(" ").Append(DmlSqlGenerator.GetVariableType(sqlGenerator, keyMember));
Facet facet;
if (keyMember.TypeUsage.Facets.TryGetValue("Collation", false, out facet))
{
string s = facet.Value as string;
if (!string.IsNullOrEmpty(s))
{
commandText.AppendKeyword(" collate ").Append(s);
}
}
}
commandText.AppendLine(")");
}
commandText.AppendKeyword("insert ");
tree.Target.Expression.Accept((DbExpressionVisitor)translator);
if (0 < tree.SetClauses.Count)
{
commandText.Append("(");
bool flag = true;
foreach (DbSetClause setClause in (IEnumerable <DbModificationClause>)tree.SetClauses)
{
if (flag)
{
flag = false;
}
else
{
commandText.Append(", ");
}
setClause.Property.Accept((DbExpressionVisitor)translator);
}
commandText.AppendLine(")");
}
else
{
commandText.AppendLine();
}
if (useGeneratedValuesVariable)
{
commandText.AppendKeyword("output ");
bool flag = true;
foreach (EdmMember keyMember in elementType.KeyMembers)
{
if (flag)
{
flag = false;
}
else
{
commandText.Append(", ");
}
commandText.Append("inserted.");
commandText.Append(DmlSqlGenerator.GenerateMemberTSql(keyMember));
}
commandText.AppendKeyword(" into ").AppendLine("@generated_keys");
}
if (0 < tree.SetClauses.Count)
{
bool flag = true;
commandText.AppendKeyword("values (");
foreach (DbSetClause setClause in (IEnumerable <DbModificationClause>)tree.SetClauses)
{
if (flag)
{
flag = false;
}
else
{
commandText.Append(", ");
}
setClause.Value.Accept((DbExpressionVisitor)translator);
translator.RegisterMemberValue(setClause.Property, setClause.Value);
}
commandText.AppendLine(")");
}
else
{
commandText.AppendKeyword("default values");
commandText.AppendLine();
}
if (generateReturningSql)
{
DmlSqlGenerator.GenerateReturningSql(commandText, (DbModificationCommandTree)tree, elementType, translator, tree.Returning, useGeneratedValuesVariable);
}
parameters = translator.Parameters;
return(commandText.ToString());
}
internal static void GenerateReturningSql(
SqlStringBuilder commandText,
DbModificationCommandTree tree,
EntityType tableType,
DmlSqlGenerator.ExpressionTranslator translator,
DbExpression returning,
bool useGeneratedValuesVariable)
{
if (returning == null)
{
return;
}
commandText.AppendKeyword("select ");
if (useGeneratedValuesVariable)
{
translator.PropertyAlias = "t";
}
returning.Accept((DbExpressionVisitor)translator);
if (useGeneratedValuesVariable)
{
translator.PropertyAlias = (string)null;
}
commandText.AppendLine();
if (useGeneratedValuesVariable)
{
commandText.AppendKeyword("from ");
commandText.Append("@generated_keys");
commandText.AppendKeyword(" as ");
commandText.Append("g");
commandText.AppendKeyword(" join ");
tree.Target.Expression.Accept((DbExpressionVisitor)translator);
commandText.AppendKeyword(" as ");
commandText.Append("t");
commandText.AppendKeyword(" on ");
string keyword = string.Empty;
foreach (EdmMember keyMember in tableType.KeyMembers)
{
commandText.AppendKeyword(keyword);
keyword = " and ";
commandText.Append("g.");
string memberTsql = DmlSqlGenerator.GenerateMemberTSql(keyMember);
commandText.Append(memberTsql);
commandText.Append(" = t.");
commandText.Append(memberTsql);
}
commandText.AppendLine();
commandText.AppendKeyword("where @@ROWCOUNT > 0");
}
else
{
commandText.AppendKeyword("from ");
tree.Target.Expression.Accept((DbExpressionVisitor)translator);
commandText.AppendLine();
commandText.AppendKeyword("where @@ROWCOUNT > 0");
EntitySetBase target = ((DbScanExpression)tree.Target.Expression).Target;
bool flag = false;
foreach (EdmMember keyMember in target.ElementType.KeyMembers)
{
commandText.AppendKeyword(" and ");
commandText.Append(DmlSqlGenerator.GenerateMemberTSql(keyMember));
commandText.Append(" = ");
SqlParameter sqlParameter;
if (translator.MemberValues.TryGetValue(keyMember, out sqlParameter))
{
commandText.Append(sqlParameter.ParameterName);
}
else
{
if (flag)
{
throw new NotSupportedException(Strings.Update_NotSupportedServerGenKey((object)target.Name));
}
if (!DmlSqlGenerator.IsValidScopeIdentityColumnType(keyMember.TypeUsage))
{
throw new InvalidOperationException(Strings.Update_NotSupportedIdentityType((object)keyMember.Name, (object)keyMember.TypeUsage.ToString()));
}
commandText.Append("scope_identity()");
flag = true;
}
}
}
}
