ee7ec10b11
This patch adds the parsing for the "CREATE MATERIALIZED VIEW" statement, following Cassandra 3 syntax. For example: CREATE MATERIALIZED VIEW building_by_city AS SELECT * FROM buildings WHERE city IS NOT NULL PRIMARY KEY(city, name); It also adds the "IS NOT NULL" operator needed for this purpose. As in Cassandra, "IS NOT NULL" can only be used for materialized view creation, and not in a normal SELECT. It can only be used with the NULL operand (i.e., "IS NOT 3" will be a syntax error). The current implementation of this statement just does some sanity checking (such as to verify that "city" is a valid column name and that the "building" base table exists), complains that materialized views are not yet supported: SyntaxException: <ErrorMessage code=2000 [Syntax error in CQL query] message="Failed parsing statement: [CREATE MATERIALIZED VIEW building_by_city AS SELECT * FROM buildings WHERE city IS NOT NULL PRIMARY KEY(city, name);] reason: unsupported operation: Materialized views not yet supported"> As mentioned above, the "IS NOT NULL" restriction is not allowed in ordinary selects not creating a materialized views: SELECT * FROM buildings WHERE city IS NOT NULL; InvalidRequest: code=2200 [Invalid query] message="restriction 'city IS NOT null' is only supported in materialized view creation" Signed-off-by: Nadav Har'El <nyh@scylladb.com> Message-Id: <1475742927-30695-1-git-send-email-nyh@scylladb.com>
115 lines
3.6 KiB
C++
115 lines
3.6 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright (C) 2015 ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <cstddef>
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#include <iostream>
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#include "core/sstring.hh"
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namespace cql3 {
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class operator_type {
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public:
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static const operator_type EQ;
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static const operator_type LT;
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static const operator_type LTE;
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static const operator_type GTE;
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static const operator_type GT;
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static const operator_type IN;
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static const operator_type CONTAINS;
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static const operator_type CONTAINS_KEY;
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static const operator_type NEQ;
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static const operator_type IS_NOT;
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private:
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int32_t _b;
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const operator_type& _reverse;
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sstring _text;
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private:
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operator_type(int32_t b, const operator_type& reverse, sstring text)
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: _b(b)
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, _reverse(reverse)
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, _text(std::move(text))
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{}
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public:
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const operator_type& reverse() const { return _reverse; }
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sstring to_string() const { return _text; }
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bool operator==(const operator_type& other) const { return this == &other; }
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bool operator!=(const operator_type& other) const { return this != &other; }
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#if 0
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/**
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* Write the serialized version of this <code>Operator</code> to the specified output.
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*
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* @param output the output to write to
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* @throws IOException if an I/O problem occurs while writing to the specified output
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*/
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public void writeTo(DataOutput output) throws IOException
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{
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output.writeInt(b);
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}
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/**
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* Deserializes a <code>Operator</code> instance from the specified input.
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*
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* @param input the input to read from
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* @return the <code>Operator</code> instance deserialized
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* @throws IOException if a problem occurs while deserializing the <code>Type</code> instance.
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*/
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public static Operator readFrom(DataInput input) throws IOException
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{
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int b = input.readInt();
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for (Operator operator : values())
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if (operator.b == b)
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return operator;
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throw new IOException(String.format("Cannot resolve Relation.Type from binary representation: %s", b));
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}
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#endif
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};
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static inline
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std::ostream& operator<<(std::ostream& out, const operator_type& op) {
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return out << op.to_string();
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}
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}
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