/// <summary> /// Compile a parsed query /// </summary> /// <param name="parsed"></param> /// <returns></returns> public abstract ICompiledQuery Compile(IParsedQuery parsed);
/// <summary> /// Parse a single method, creating all the tokens to then compile the data /// </summary> /// <param name="method"></param> /// <param name="parsed"></param> /// <returns></returns> public abstract ISerializer Parse(IMethod method, IParsedQuery parsed);
protected Serializer() {
this.Parsed = new ParsedQuery();
}
public override ISerializer Parse(IMethod method, IParsedQuery parsed) {
parsed.Root = method;
parsed.Children = this.ParseChildren(method);
parsed.Methods = this.ParseMethod(method);
parsed.Skip = this.ParseSkip(method);
parsed.Limit = this.ParseLimit(method);
parsed.Databases = this.ParseDatabases(method);
parsed.Indices = this.ParseIndices(method);
parsed.Fields = this.ParseFields(method);
parsed.Fields.AddRange(method.Where(statement => statement is Assignment).SelectMany(this.ParseFields));
parsed.Values = method.Where(statement => statement is Assignment).SelectMany(this.ParseValues).ToList();
parsed.Assignments = this.ParseAssignments(method);
parsed.Conditions = this.ParseConditions(method);
parsed.Collections = this.ParseCollections(method);
parsed.Sortings = this.ParseSortings(method);
return this;
}
public override ICompiledQuery Compile(IParsedQuery parsed) {
CompiledQuery serializedQuery = new CompiledQuery() {
Children = parsed.Children.Select(this.Compile).Where(child => child != null).ToList(),
Root = parsed.Root,
Methods = parsed.Methods,
Skip = parsed.Skip,
Limit = parsed.Limit
};
List<String> compiled = new List<String>() {
parsed.Methods.FirstOrDefault()
};
if (parsed.Root is Merge) {
ICompiledQuery save = serializedQuery.Children.FirstOrDefault(child => child.Root is Save);
ICompiledQuery modify = serializedQuery.Children.FirstOrDefault(child => child.Root is Modify);
if (save != null && modify != null) {
compiled.Add("INTO");
compiled.Add(save.Collections.FirstOrDefault());
compiled.Add("SET");
compiled.Add(save.Assignments.FirstOrDefault());
//compiled.Add("ON DUPLICATE KEY UPDATE");
//compiled.Add(modify.Assignments.FirstOrDefault());
}
}
else if (parsed.Root is Index) {
Primary primary = parsed.Root.FirstOrDefault(attribute => attribute is Primary) as Primary;
Unique unique = parsed.Root.FirstOrDefault(attribute => attribute is Unique) as Unique;
if (primary == null) {
// UNIQUE INDEX `Score_UNIQUE` (`Score` ASC)
if (unique != null) {
compiled.Add("UNIQUE INDEX");
if (parsed.Root.Any(attribute => attribute is IfNotExists)) {
compiled.Add("IF NOT EXISTS");
}
// todo move the name element to a modifier?
compiled.Add(String.Format("`{0}`", ((Index)parsed.Root).Name));
}
// INDEX `Name_INDEX` (`Name` ASC)
else {
compiled.Add("INDEX");
if (parsed.Root.Any(attribute => attribute is IfNotExists)) {
compiled.Add("IF NOT EXISTS");
}
// todo move the name element to a modifier?
compiled.Add(String.Format("`{0}`", ((Index)parsed.Root).Name));
}
compiled.Add("ON");
if (parsed.Collections.Any() == true) {
serializedQuery.Collections.Add(String.Join(", ", parsed.Collections));
compiled.Add(serializedQuery.Collections.FirstOrDefault());
}
if (parsed.Sortings.Any() == true) {
serializedQuery.Sortings.Add(String.Join(", ", parsed.Sortings));
compiled.Add(String.Format("({0})", serializedQuery.Sortings.FirstOrDefault()));
}
}
else {
// SQLite does not support adding primary indexes after a table has been created.
serializedQuery = null;
}
}
else if (parsed.Root is Alter) {
if (parsed.Collections.Any() == true) {
compiled.Add("TABLE");
serializedQuery.Collections.Add(String.Join(", ", parsed.Collections));
compiled.Add(serializedQuery.Collections.FirstOrDefault());
}
compiled.Add(String.Join(", ", serializedQuery.Children.Where(child => child.Root is Create || child.Root is Drop).SelectMany(child => child.Compiled)));
}
else if (parsed.Root is Find) {
serializedQuery.Fields = new List<String>(parsed.Fields);
compiled.Add(parsed.Fields.Any() == true ? String.Join(", ", parsed.Fields) : "*");
if (parsed.Collections.Any() == true) {
serializedQuery.Collections.Add(String.Join(", ", parsed.Collections));
compiled.Add("FROM");
compiled.Add(serializedQuery.Collections.FirstOrDefault());
}
if (parsed.Conditions.Any() == true) {
serializedQuery.Conditions.Add(String.Join(" AND ", parsed.Conditions));
compiled.Add("WHERE");
compiled.Add(serializedQuery.Conditions.FirstOrDefault());
}
if (parsed.Sortings.Any() == true) {
serializedQuery.Sortings.Add(String.Join(", ", parsed.Sortings));
compiled.Add("ORDER BY");
compiled.Add(serializedQuery.Sortings.FirstOrDefault());
}
if (parsed.Limit != null) {
compiled.Add("LIMIT");
compiled.Add(parsed.Limit.Value.ToString(CultureInfo.InvariantCulture));
}
if (parsed.Skip != null) {
compiled.Add("OFFSET");
compiled.Add(parsed.Skip.Value.ToString(CultureInfo.InvariantCulture));
}
}
else if (parsed.Root is Create) {
if (parsed.Databases.Any() == true) {
serializedQuery.Databases.Add(parsed.Databases.FirstOrDefault());
compiled = new List<String> {
"ATTACH",
"DATABASE",
serializedQuery.Databases.FirstOrDefault()
};
}
else if (parsed.Collections.Any() == true) {
compiled.Add("TABLE");
if (parsed.Root.Any(modifier => modifier is IfNotExists) == true) {
compiled.Add("IF NOT EXISTS");
}
compiled.Add(parsed.Collections.FirstOrDefault());
// parsed.Indices will only hae primary keys generated. Autoincrement primary keys mut be inline.
if (parsed.Indices.Any() == true && parsed.Root.DescendantsAndSelf<AutoIncrement>().Any() == false) {
List<String> fieldsIndicesCombination = new List<String>(parsed.Fields);
fieldsIndicesCombination.AddRange(parsed.Indices);
serializedQuery.Indices.Add(String.Join(", ", fieldsIndicesCombination.ToArray()));
compiled.Add(String.Format("({0})", serializedQuery.Indices.FirstOrDefault()));
}
else {
compiled.Add(String.Format("({0})", String.Join(", ", parsed.Fields.ToArray())));
}
}
else if (parsed.Fields.Any() == true) {
compiled.Add("COLUMN");
compiled.Add(String.Join(", ", parsed.Fields.ToArray()));
}
}
else if (parsed.Root is Save) {
if (parsed.Collections.Any() == true) {
compiled.Add("INTO");
serializedQuery.Collections.Add(parsed.Collections.FirstOrDefault());
compiled.Add(serializedQuery.Collections.FirstOrDefault());
}
if (parsed.Fields.Any() == true) {
serializedQuery.Fields.Add(String.Join(", ", parsed.Fields));
compiled.Add(String.Format("({0})", serializedQuery.Fields.FirstOrDefault()));
}
compiled.Add("VALUES");
if (parsed.Values.Any() == true) {
serializedQuery.Values.Add(String.Join(", ", parsed.Values));
compiled.Add(String.Format("({0})", serializedQuery.Values.FirstOrDefault()));
}
if (parsed.Assignments.Any() == true) {
serializedQuery.Assignments.Add(String.Join(", ", parsed.Assignments));
}
}
else if (parsed.Root is Modify) {
if (parsed.Collections.Any() == true) {
serializedQuery.Collections.Add(String.Join(", ", parsed.Collections));
compiled.Add(serializedQuery.Collections.FirstOrDefault());
}
if (parsed.Assignments.Any() == true) {
serializedQuery.Assignments.Add(String.Join(", ", parsed.Assignments));
compiled.Add("SET");
compiled.Add(serializedQuery.Assignments.FirstOrDefault());
}
if (parsed.Conditions.Any() == true) {
serializedQuery.Conditions.Add(String.Join(" AND ", parsed.Conditions));
compiled.Add("WHERE");
compiled.Add(serializedQuery.Conditions.FirstOrDefault());
}
}
else if (parsed.Root is Remove) {
if (parsed.Collections.Any() == true) {
serializedQuery.Collections.Add(String.Join(", ", parsed.Collections));
compiled.Add("FROM");
compiled.Add(serializedQuery.Collections.FirstOrDefault());
}
if (parsed.Conditions.Any() == true) {
serializedQuery.Conditions.Add(String.Join(" AND ", parsed.Conditions));
compiled.Add("WHERE");
compiled.Add(serializedQuery.Conditions.FirstOrDefault());
}
}
else if (parsed.Root is Drop) {
if (parsed.Databases.Any() == true) {
serializedQuery.Databases.Add(parsed.Databases.FirstOrDefault());
compiled = new List<String> {
"DETACH",
"DATABASE",
serializedQuery.Databases.FirstOrDefault()
};
}
else if (parsed.Collections.Any() == true) {
compiled.Add("TABLE");
serializedQuery.Collections.Add(parsed.Collections.FirstOrDefault());
compiled.Add(serializedQuery.Collections.FirstOrDefault());
}
else if (parsed.Fields.Any() == true) {
compiled.Add("COLUMN");
compiled.Add(String.Join(", ", parsed.Fields.ToArray()));
}
}
if (serializedQuery != null) serializedQuery.Compiled.Add(String.Join(" ", compiled));
return serializedQuery;
}
public override ISerializer Parse(IMethod method, IParsedQuery parsed) {
parsed.Root = method;
parsed.Children = this.ParseChildren(method);
parsed.Methods = this.ParseMethod(method);
parsed.Skip = this.ParseSkip(method);
parsed.Limit = this.ParseLimit(method);
parsed.Databases = this.ParseDatabases(method);
parsed.Indices = this.ParseIndices(method);
parsed.Fields = this.ParseFields(method);
parsed.Assignments = this.ParseAssignments(method);
parsed.Conditions = this.ParseConditions(method);
parsed.Collections = this.ParseCollections(method);
parsed.Sortings = this.ParseSortings(method);
return this;
}
public override ICompiledQuery Compile(IParsedQuery parsed) {
return new CompiledQuery {
Children = parsed.Children.Select(this.Compile).ToList(),
Root = parsed.Root,
Methods = parsed.Methods,
Skip = parsed.Skip,
Limit = parsed.Limit,
Databases = parsed.Databases,
Collections = parsed.Collections,
Conditions = parsed.Conditions,
Fields = parsed.Fields,
Assignments = parsed.Assignments,
Indices = parsed.Indices,
Sortings = parsed.Sortings
};
}
