/// <summary>
/// Gets the stringified query expression format of the current instance. A formatted string for field-operation-parameter will be
/// conjuncted by the value of the <see cref="RepoDb.Enumerations.Conjunction"/> property.
/// </summary>
/// <param name="index">The parameter index for batch operation.</param>
/// <param name="dbSetting">The currently in used <see cref="IDbSetting"/> object.</param>
/// <returns>A stringified formatted-text of the current instance.</returns>
public string GetString(int index,
IDbSetting dbSetting)
{
// Fix first the parameters
Fix();
// Variables
var groupList = new List <string>();
var conjunction = Conjunction.GetText();
var separator = string.Concat(" ", conjunction, " ");
// Check the instance fields
var queryFields = QueryFields.AsList();
if (queryFields?.Count > 0)
{
var fields = QueryFields
.Select(qf =>
qf.AsFieldAndParameter(index, dbSetting)).Join(separator);
groupList.Add(fields);
}
// Check the instance groups
var queryGroups = QueryGroups.AsList();
if (queryGroups?.Count > 0)
{
var groups = QueryGroups
.Select(qg => qg.GetString(index, dbSetting)).Join(separator);
groupList.Add(groups);
}
// Return the value
return(IsNot ? string.Concat("NOT (", groupList.Join(conjunction), ")") : string.Concat("(", groupList.Join(separator), ")"));
}
/// <summary>
/// Gets the stringified query expression format of the current instance. A formatted string for field-operation-parameter will be
/// conjuncted by the value of the <see cref="Conjunction"/> property.
/// </summary>
/// <returns>A stringified formatted-text of the current instance.</returns>
public string GetString()
{
var groupList = new List <string>();
var conjunction = GetConjunctionText();
var separator = string.Concat(" ", conjunction, " ");
if (QueryFields != null && QueryFields.Any())
{
var fieldList = new List <string>();
QueryFields.ToList().ForEach(queryField =>
{
fieldList.Add(queryField.AsFieldAndParameter());
});
groupList.Add(fieldList.Join(separator));
}
if (QueryGroups != null && QueryGroups.Any())
{
var fieldList = new List <string>();
QueryGroups.ToList().ForEach(queryGroup =>
{
fieldList.Add(queryGroup.GetString());
});
groupList.Add(fieldList.Join(separator));
}
return(IsNot ? string.Concat("NOT (", groupList.Join(conjunction), ")") : string.Concat("(", groupList.Join(separator), ")"));
}
/// <summary>
/// Gets the stringified query expression format of the current instance. A formatted string for field-operation-parameter will be
/// conjuncted by the value of the <see cref="Conjunction"/> property.
/// </summary>
/// <returns>A stringified formatted-text of the current instance.</returns>
public string GetString()
{
var groupList = new List <string>();
var conjunction = GetConjunctionText();
var separator = string.Concat(" ", conjunction, " ");
if (QueryFields?.Count() > 0)
{
var fieldList = new List <string>();
foreach (var queryField in QueryFields)
{
fieldList.Add(queryField.AsFieldAndParameter());
}
groupList.Add(fieldList.Join(separator));
}
if (QueryGroups?.Count() > 0)
{
var fieldList = new List <string>();
foreach (var queryGroup in QueryGroups)
{
fieldList.Add(queryGroup.GetString());
}
groupList.Add(fieldList.Join(separator));
}
return(IsNot ? string.Concat("NOT (", groupList.Join(conjunction), ")") : string.Concat("(", groupList.Join(separator), ")"));
}
/// <summary>
/// Reset the <see cref="QueryGroup"/> back to its default state (as is newly instantiated).
/// </summary>
public void Reset()
{
// Rest all fields
if (QueryFields?.Any() == true)
{
foreach (var field in QueryFields)
{
field.Reset();
}
}
// Rest all groups
if (QueryGroups?.Any() == true)
{
foreach (var group in QueryGroups)
{
group.Reset();
}
}
// Reset the attribute
m_conjuctionTextAttribute = null;
m_isFixed = false;
// Reset the hash code
m_hashCode = null;
}
/// <summary>
/// Reset all the query groups.
/// </summary>
private void ResetQueryGroups()
{
if (QueryGroups?.Any() != true)
{
return;
}
foreach (var group in QueryGroups)
{
group.Reset();
}
}
/// <summary>
/// Forces to set the <see cref="isFixed"/> variable to True.
/// </summary>
private void ForceIsFixedVariables()
{
if (QueryGroups?.Any() == true)
{
foreach (var queryGroup in QueryGroups)
{
queryGroup.ForceIsFixedVariables();
}
}
isFixed = true;
}
/// <summary>
/// Force to set the <see cref="m_isFixed"/> variable to True.
/// </summary>
private void ForceFix()
{
// Set the flags of the children
if (QueryGroups?.Any() == true)
{
foreach (var queryGroup in QueryGroups)
{
queryGroup.ForceFix();
}
}
// Set the flag of the current instance
m_isFixed = true;
}
public void TestRemoveGroupAndEntities()
{
CreateTestEntity(0, Groups.GroupA);
CreateTestEntity(1, Groups.GroupA);
CreateTestEntity(1, Groups.GroupB);
_scheduler.SubmitEntities();
_functions.RemoveEntitiesFromGroup(Groups.GroupA);
_scheduler.SubmitEntities();
var query = new QueryGroups(GroupAB).Evaluate();
var entityCount = query.Count <TestEntityComponent>(_entitiesDB.entitiesForTesting);
Assert.AreEqual(1, entityCount, "Entities in the target group should be removed");
}
// Equality and comparers
/// <summary>
/// Returns the hashcode for this <see cref="QueryGroup"/>.
/// </summary>
/// <returns>The hashcode value.</returns>
public override int GetHashCode()
{
// Make sure to check if this is already taken
if (!ReferenceEquals(null, m_hashCode))
{
return(m_hashCode.Value);
}
// Set the default value (should not be nullable for better performance)
var hashCode = 0;
// Iterates the child query field
if (!ReferenceEquals(null, QueryFields))
{
QueryFields.ToList().ForEach(queryField =>
{
hashCode += queryField.GetHashCode();
});
}
// Iterates the child query groups
if (!ReferenceEquals(null, QueryGroups))
{
QueryGroups.ToList().ForEach(queryGroup =>
{
hashCode += queryGroup.GetHashCode();
});
}
// Set with conjunction
hashCode += Conjunction.GetHashCode();
// Set back the hashcode value
m_hashCode = hashCode;
// Return the actual hash code
return(hashCode);
}
/// <summary>
/// Returns the hashcode for this <see cref="QueryGroup"/>.
/// </summary>
/// <returns>The hashcode value.</returns>
public override int GetHashCode()
{
// Make sure to check if this is already taken
if (this.hashCode != null)
{
return(this.hashCode.Value);
}
var hashCode = 0;
// Iterates the child query field
if (QueryFields != null)
{
foreach (var queryField in QueryFields)
{
hashCode += queryField.GetHashCode();
}
}
// Iterates the child query groups
if (QueryGroups?.Any() == true)
{
foreach (var queryGroup in QueryGroups)
{
hashCode += queryGroup.GetHashCode();
}
}
// Set with conjunction
hashCode += (int)Conjunction;
// Set the IsNot
hashCode += IsNot.GetHashCode();
// Set and return the hashcode
return((this.hashCode = hashCode).Value);
}
public bool MoveNext()
{
var query = new QueryGroups(_groups).WithAny <T>(_entitiesDB);
return(query.result.count == 0);
}
