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using Sqlite;
namespace Qlite {
public class InsertBuilder : StatementBuilder {
// INSERT [OR ...]
private bool replace_val;
private string or_val;
// INTO [...]
private Table table;
private string table_name;
// VALUES [...]
private StatementBuilder.Field[] fields;
protected InsertBuilder(Database db) {
base(db);
}
public InsertBuilder replace() {
this.replace_val = true;
return this;
}
public InsertBuilder or(string or) {
this.or_val = or;
return this;
}
public InsertBuilder into(Table table) {
this.table = table;
this.table_name = table.name;
return this;
}
public InsertBuilder into_name(string table) {
this.table_name = table;
return this;
}
public InsertBuilder value<T>(Column<T> column, T value) {
if (fields == null) {
fields = { new StatementBuilder.Field<T>(column, value) };
} else {
StatementBuilder.Field[] fields_new = new StatementBuilder.Field[fields.length+1];
for (int i = 0; i < fields.length; i++) {
fields_new[i] = fields[i];
}
fields_new[fields.length] = new Field<T>(column, value);
fields = fields_new;
}
return this;
}
public InsertBuilder value_null<T>(Column<T> column) {
if (column.not_null) throw new DatabaseError.ILLEGAL_QUERY(@"Can't set non-null column $(column.name) to null");
if (fields == null) {
fields = { new NullField<T>(column) };
} else {
StatementBuilder.Field[] fields_new = new StatementBuilder.Field[fields.length+1];
for (int i = 0; i < fields.length; i++) {
fields_new[i] = fields[i];
}
fields_new[fields.length] = new NullField<T>(column);
fields = fields_new;
}
return this;
}
public override Statement prepare() throws DatabaseError {
string fields_text = "";
string value_qs = "";
for (int i = 0; i < fields.length; i++) {
if (i != 0) {
value_qs += ", ";
fields_text += ", ";
}
fields_text += fields[i].column.name;
value_qs += "?";
}
string sql = replace_val ? "REPLACE" : "INSERT";
if (!replace_val && or_val != null) sql += @" OR $or_val";
sql += @" INTO $table_name ( $fields_text ) VALUES ($value_qs)";
Statement stmt = db.prepare(sql);
for (int i = 0; i < fields.length; i++) {
fields[i].bind(stmt, i+1);
}
return stmt;
}
public int64 perform() throws DatabaseError {
if (prepare().step() != DONE) {
throw new DatabaseError.EXEC_ERROR(@"SQLite error: $(db.errcode()) - $(db.errmsg())");
}
return db.last_insert_rowid();
}
}
}
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