internal virtual SqlExpression VisitLike(SqlLike like) {
like.Expression = this.VisitExpression(like.Expression);
like.Pattern = this.VisitExpression(like.Pattern);
like.Escape = this.VisitExpression(like.Escape);
return like;
}
internal override SqlExpression VisitLike(SqlLike like)
{
this.VisitWithParens(like.Expression, like);
_commandStringBuilder.Append(" LIKE ");
this.Visit(like.Pattern);
if(like.Escape != null)
{
_commandStringBuilder.Append(" ESCAPE ");
this.Visit(like.Escape);
}
return like;
}
internal override SqlExpression VisitLike(SqlLike like)
{
return new SqlLike(
like.ClrType, like.SqlType,
this.VisitExpression(like.Expression),
this.VisitExpression(like.Pattern),
this.VisitExpression(like.Escape),
like.SourceExpression
);
}
internal override SqlExpression VisitLike(SqlLike like)
{
base.VisitLike(like);
// When comparing a unicode pattern against a non-unicode expression,
// we want retype the pattern as non-unicode.
if(!like.Expression.SqlType.IsUnicodeType && like.Pattern.SqlType.IsUnicodeType &&
(like.Pattern.NodeType == SqlNodeType.Value || like.Pattern.NodeType == SqlNodeType.ClientParameter))
{
SqlSimpleTypeExpression pattern = (SqlSimpleTypeExpression)like.Pattern;
pattern.SetSqlType(pattern.SqlType.GetNonUnicodeEquivalent());
}
return like;
}
internal override SqlExpression VisitLike(SqlLike like) {
like.Expression = this.FetchExpression(like.Expression);
like.Pattern = this.FetchExpression(like.Pattern);
return base.VisitLike(like);
}
internal SqlLike Like(SqlExpression expr, SqlExpression pattern, SqlExpression escape, Expression source)
{
SqlLike like = new SqlLike(typeof(bool), typeProvider.From(typeof(bool)), expr, pattern, escape, source);
return like;
}