public async Task <bool> AnyAsync(CancellationToken cancellationToken = default)
{
const int trueValue = 1;
const int falseValue = 0;
var trueParameter = new UniqueParameter(uniqueParameterNameGenerator, new Parameter("true"));
var falseParameter = new UniqueParameter(uniqueParameterNameGenerator, new Parameter("false"));
var result = await readQueryExecutor.ExecuteScalarAsync <int>(CreateQuery().GenerateSql(), CreateParameterValues(), RetriableOperation.Select, commandTimeout, cancellationToken);
return(result != falseValue);
CommandParameterValues CreateParameterValues()
{
return(new CommandParameterValues(paramValues)
{
{ trueParameter.ParameterName, trueValue },
{ falseParameter.ParameterName, falseValue }
});
}
IExpression CreateQuery()
{
var clonedSelectBuilder = selectBuilder.Clone();
clonedSelectBuilder.RemoveOrderBys();
return(new IfExpression(new ExistsExpression(clonedSelectBuilder.GenerateSelectWithoutDefaultOrderBy()),
new SelectConstant(trueParameter),
new SelectConstant(falseParameter)));
}
}
public IUnaryParameterQueryBuilder <TRecord> WhereParameterized(string fieldName, UnarySqlOperand operand, Parameter parameter)
{
var uniqueParameter = new UniqueParameter(uniqueParameterNameGenerator, parameter);
selectBuilder.AddWhere(new UnaryWhereParameter(fieldName, operand, uniqueParameter));
return(new UnaryParameterQueryBuilder <TRecord>(Parameter(uniqueParameter), uniqueParameter));
}
public IBinaryParametersQueryBuilder <TRecord> WhereParameterized(string fieldName, BinarySqlOperand operand,
Parameter startValueParameter, Parameter endValueParameter)
{
var uniqueStartParameter = new UniqueParameter(uniqueParameterNameGenerator, startValueParameter);
var uniqueEndParameter = new UniqueParameter(uniqueParameterNameGenerator, endValueParameter);
selectBuilder.AddWhere(new BinaryWhereParameter(fieldName, operand, uniqueStartParameter, uniqueEndParameter));
return(new BinaryParametersQueryBuilder <TRecord>(Parameter(uniqueStartParameter).Parameter(uniqueEndParameter), uniqueStartParameter, uniqueEndParameter));
}
public IUnaryParameterDeleteQueryBuilder <TRecord> WhereParameterised(string fieldName, UnarySqlOperand operand,
Parameter parameter)
{
var uniqueParameter = new UniqueParameter(uniqueParameterNameGenerator, parameter);
return(new UnaryParameterDeleteQueryBuilder <TRecord>(
AddWhereClause(new UnaryWhereClause(new WhereFieldReference(fieldName), operand, uniqueParameter.ParameterName)),
uniqueParameter));
}
public IBinaryParametersDeleteQueryBuilder <TRecord> WhereParameterised(string fieldName,
BinarySqlOperand operand, Parameter startValueParameter,
Parameter endValueParameter)
{
var uniqueStartParameter = new UniqueParameter(uniqueParameterNameGenerator, startValueParameter);
var uniqueEndParameter = new UniqueParameter(uniqueParameterNameGenerator, endValueParameter);
return(new BinaryParametersDeleteQueryBuilder <TRecord>(
AddWhereClause(new BinaryWhereClause(new WhereFieldReference(fieldName), operand, uniqueStartParameter.ParameterName, uniqueEndParameter.ParameterName)),
uniqueStartParameter,
uniqueEndParameter));
}
public BinaryParametersQueryBuilder(IQueryBuilder <TRecord> queryBuilder, UniqueParameter startParameter, UniqueParameter endParameter)
{
this.queryBuilder = queryBuilder;
this.startParameter = startParameter;
this.endParameter = endParameter;
}
public UnaryParameterQueryBuilder(IQueryBuilder <TRecord> queryBuilder, UniqueParameter parameter)
{
this.queryBuilder = queryBuilder;
this.parameter = parameter;
}
public BinaryParametersDeleteQueryBuilder(IDeleteQueryBuilder <TRecord> deleteQueryBuilder, UniqueParameter startParameter, UniqueParameter endParameter)
{
this.deleteQueryBuilder = deleteQueryBuilder;
this.startParameter = startParameter;
this.endParameter = endParameter;
}
public UnaryParameterDeleteQueryBuilder(IDeleteQueryBuilder <TRecord> deleteQueryBuilder, UniqueParameter parameter)
{
this.deleteQueryBuilder = deleteQueryBuilder;
this.parameter = parameter;
}
