9022cf99ff
There was a lot of `VERIFY_NOT_REACHED` error handling going on. Fixed most of those. A bit of a caveat is that after every `evaluate` call for expressions that are part of a statement the error status of the `SQLResult` return value must be called.
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
/*
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* Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
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* Copyright (c) 2021, Mahmoud Mandour <ma.mandourr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibSQL/AST/AST.h>
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#include <LibSQL/Database.h>
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#include <LibSQL/Meta.h>
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#include <LibSQL/Row.h>
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namespace SQL::AST {
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static bool does_value_data_type_match(SQLType expected, SQLType actual)
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{
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if (actual == SQLType::Null) {
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return false;
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}
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if (expected == SQLType::Integer) {
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return actual == SQLType::Integer || actual == SQLType::Float;
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}
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return expected == actual;
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}
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RefPtr<SQLResult> Insert::execute(ExecutionContext& context) const
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{
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auto table_def = context.database->get_table(m_schema_name, m_table_name);
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if (!table_def) {
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auto schema_name = m_schema_name;
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if (schema_name.is_null() || schema_name.is_empty())
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schema_name = "default";
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return SQLResult::construct(SQLCommand::Insert, SQLErrorCode::TableDoesNotExist, String::formatted("{}.{}", schema_name, m_table_name));
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}
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Row row(table_def);
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for (auto& column : m_column_names) {
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if (!row.has(column)) {
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return SQLResult::construct(SQLCommand::Insert, SQLErrorCode::ColumnDoesNotExist, column);
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}
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}
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Vector<Row> inserted_rows;
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inserted_rows.ensure_capacity(m_chained_expressions.size());
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context.result = SQLResult::construct();
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for (auto& row_expr : m_chained_expressions) {
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for (auto& column_def : table_def->columns()) {
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if (!m_column_names.contains_slow(column_def.name())) {
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row[column_def.name()] = column_def.default_value();
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}
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}
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auto row_value = row_expr.evaluate(context);
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if (context.result->has_error())
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return context.result;
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VERIFY(row_value.type() == SQLType::Tuple);
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auto values = row_value.to_vector().value();
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if (m_column_names.size() == 0 && values.size() != row.size()) {
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return SQLResult::construct(SQLCommand::Insert, SQLErrorCode::InvalidNumberOfValues, "");
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}
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for (auto ix = 0u; ix < values.size(); ix++) {
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auto input_value_type = values[ix].type();
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auto& tuple_descriptor = *row.descriptor();
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// In case of having column names, this must succeed since we checked for every column name for existence in the table.
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auto element_index = (m_column_names.size() == 0) ? ix : tuple_descriptor.find_if([&](auto element) { return element.name == m_column_names[ix]; }).index();
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auto element_type = tuple_descriptor[element_index].type;
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if (!does_value_data_type_match(element_type, input_value_type)) {
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return SQLResult::construct(SQLCommand::Insert, SQLErrorCode::InvalidValueType, table_def->columns()[element_index].name());
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}
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row[element_index] = values[ix];
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}
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inserted_rows.append(row);
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}
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for (auto& inserted_row : inserted_rows) {
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context.database->insert(inserted_row);
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// FIXME Error handling
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}
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return SQLResult::construct(SQLCommand::Insert, 0, m_chained_expressions.size(), 0);
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}
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}
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