/// <summary>
/// Gets the textual representation of the <paramref name="binaryExpressionType"/>
/// </summary>
/// <param name="binaryExpressionType">The <see cref="DbBinaryExpressionType"/> for which to return the textual representation.</param>
/// <returns><see cref="string"/></returns>
protected virtual string GetBinaryOperator(DbBinaryExpressionType binaryExpressionType)
{
switch (binaryExpressionType)
{
case DbBinaryExpressionType.And:
return " AND ";
case DbBinaryExpressionType.Or:
return " OR ";
case DbBinaryExpressionType.Equal:
case DbBinaryExpressionType.Assignment:
return " = ";
case DbBinaryExpressionType.NotEqual:
return " <> ";
case DbBinaryExpressionType.GreaterThanOrEqual:
return " >= ";
case DbBinaryExpressionType.GreaterThan:
return " > ";
case DbBinaryExpressionType.LessThan:
return " < ";
case DbBinaryExpressionType.LessThanOrEqual:
return " <= ";
case DbBinaryExpressionType.Add:
return " + ";
case DbBinaryExpressionType.Subtract:
return " - ";
case DbBinaryExpressionType.Multiply:
return " * ";
case DbBinaryExpressionType.Divide:
return " / ";
default:
throw new ArgumentOutOfRangeException("binaryExpressionType", binaryExpressionType, "is not supported");
}
}
private void ValidateBinaryExpression(DbBinaryExpression binaryExpression, DbBinaryExpressionType binaryExpressionType)
{
Assert.IsNotNull(binaryExpression);
Assert.IsNotNull(binaryExpression.LeftExpression);
Assert.IsNotNull(binaryExpression.RightExpression);
Assert.IsTrue(binaryExpression.ExpressionType == DbExpressionType.Binary);
Assert.IsTrue(binaryExpression.BinaryExpressionType == binaryExpressionType);
}
/// <summary>
/// Gets the textual representation of the <paramref name="binaryExpressionType"/>
/// </summary>
/// <param name="binaryExpressionType">The <see cref="DbBinaryExpressionType"/> for which to return the textual representation.</param>
/// <returns><see cref="string"/></returns>
protected virtual string GetBinaryOperator(DbBinaryExpressionType binaryExpressionType)
{
switch (binaryExpressionType)
{
case DbBinaryExpressionType.And:
return(" AND ");
case DbBinaryExpressionType.Or:
return(" OR ");
case DbBinaryExpressionType.Equal:
case DbBinaryExpressionType.Assignment:
return(" = ");
case DbBinaryExpressionType.NotEqual:
return(" <> ");
case DbBinaryExpressionType.GreaterThanOrEqual:
return(" >= ");
case DbBinaryExpressionType.GreaterThan:
return(" > ");
case DbBinaryExpressionType.LessThan:
return(" < ");
case DbBinaryExpressionType.LessThanOrEqual:
return(" <= ");
case DbBinaryExpressionType.Add:
return(" + ");
case DbBinaryExpressionType.Subtract:
return(" - ");
case DbBinaryExpressionType.Multiply:
return(" * ");
case DbBinaryExpressionType.Divide:
return(" / ");
default:
throw new ArgumentOutOfRangeException("binaryExpressionType", binaryExpressionType, "is not supported");
}
}
private void ValidateBinaryExpression(DbBinaryExpression binaryExpression, DbBinaryExpressionType binaryExpressionType)
{
Assert.IsNotNull(binaryExpression);
Assert.IsNotNull(binaryExpression.LeftExpression);
Assert.IsNotNull(binaryExpression.RightExpression);
Assert.IsTrue(binaryExpression.ExpressionType == DbExpressionType.Binary);
Assert.IsTrue(binaryExpression.BinaryExpressionType == binaryExpressionType);
}
/// <summary>
/// Creates a <see cref="DbBinaryExpression"/>.
/// </summary>
/// <param name="binaryExpressionType">The <see cref="DbBinaryExpressionType"/> that specifies the type of binary expression to create.</param>
/// <param name="leftExpression">A <see cref="DbExpression"/> that represents the left operand.</param>
/// <param name="rightExpression">A <see cref="DbExpression"/> that represents the right operand.</param>
/// <returns>A <see cref="DbBinaryExpression"/> instance.</returns>
public DbBinaryExpression MakeBinary(DbBinaryExpressionType binaryExpressionType, DbExpression leftExpression, DbExpression rightExpression)
{
var binaryExpression = new DbBinaryExpression(binaryExpressionType, leftExpression, rightExpression);
return binaryExpression;
}
/// <summary>
/// Initializes a new instance of the <see cref="DbBinaryExpression"/> class.
/// </summary>
/// <param name="binaryExpressionType">The <see cref="DbBinaryExpressionType"/> that this <see cref="DbBinaryExpression"/> represents.</param>
/// <param name="leftExpression">The left expression.</param>
/// <param name="rightExpression">The right expression.</param>
internal DbBinaryExpression(DbBinaryExpressionType binaryExpressionType, DbExpression leftExpression, DbExpression rightExpression)
{
BinaryExpressionType = binaryExpressionType;
LeftExpression = leftExpression;
RightExpression = rightExpression;
}
/// <summary>
/// Initializes a new instance of the <see cref="DbBinaryExpression"/> class.
/// </summary>
/// <param name="binaryExpressionType">The <see cref="DbBinaryExpressionType"/> that this <see cref="DbBinaryExpression"/> represents.</param>
/// <param name="leftExpression">The left expression.</param>
/// <param name="rightExpression">The right expression.</param>
internal DbBinaryExpression(DbBinaryExpressionType binaryExpressionType, DbExpression leftExpression, DbExpression rightExpression)
{
BinaryExpressionType = binaryExpressionType;
LeftExpression = leftExpression;
RightExpression = rightExpression;
}
