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/*
* Copyright DataStax, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.datastax.oss.driver.internal.core.metadata.schema.parsing;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.core.metadata.schema.AggregateMetadata;
import com.datastax.oss.driver.api.core.metadata.schema.FunctionSignature;
import com.datastax.oss.driver.api.core.type.DataType;
import com.datastax.oss.driver.api.core.type.UserDefinedType;
import com.datastax.oss.driver.api.core.type.codec.TypeCodec;
import com.datastax.oss.driver.internal.core.adminrequest.AdminRow;
import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
import com.datastax.oss.driver.internal.core.metadata.schema.DefaultAggregateMetadata;
import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableList;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.Map;
import net.jcip.annotations.ThreadSafe;
@ThreadSafe
public class AggregateParser {
private final DataTypeParser dataTypeParser;
private final InternalDriverContext context;
public AggregateParser(DataTypeParser dataTypeParser, InternalDriverContext context) {
this.dataTypeParser = dataTypeParser;
this.context = context;
}
public AggregateMetadata parseAggregate(
AdminRow row,
CqlIdentifier keyspaceId,
Map userDefinedTypes) {
// Cassandra < 3.0:
// CREATE TABLE system.schema_aggregates (
// keyspace_name text,
// aggregate_name text,
// signature frozen>,
// argument_types list,
// final_func text,
// initcond blob,
// return_type text,
// state_func text,
// state_type text,
// PRIMARY KEY (keyspace_name, aggregate_name, signature)
// ) WITH CLUSTERING ORDER BY (aggregate_name ASC, signature ASC)
//
// Cassandra >= 3.0:
// CREATE TABLE system.schema_aggregates (
// keyspace_name text,
// aggregate_name text,
// argument_types frozen>,
// final_func text,
// initcond text,
// return_type text,
// state_func text,
// state_type text,
// PRIMARY KEY (keyspace_name, aggregate_name, argument_types)
// ) WITH CLUSTERING ORDER BY (aggregate_name ASC, argument_types ASC)
String simpleName = row.getString("aggregate_name");
List argumentTypes = row.getListOfString("argument_types");
FunctionSignature signature =
new FunctionSignature(
CqlIdentifier.fromInternal(simpleName),
dataTypeParser.parse(keyspaceId, argumentTypes, userDefinedTypes, context));
DataType stateType =
dataTypeParser.parse(keyspaceId, row.getString("state_type"), userDefinedTypes, context);
TypeCodec
