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