com.datastax.driver.mapping.EntityMapper Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of scylla-driver-mapping Show documentation

Object mapper for the CQL Java Driver.

There is a newer version: 3.11.5.3

Show newest version

/*
 * 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.driver.mapping;

import com.datastax.driver.core.ConsistencyLevel;
import java.util.ArrayList;
import java.util.List;

class EntityMapper {

  private final Class entityClass;
  final String keyspace;
  final String table;

  final ConsistencyLevel writeConsistency;
  final ConsistencyLevel readConsistency;

  final List partitionKeys = new ArrayList();
  final List clusteringColumns = new ArrayList();

  final List allColumns = new ArrayList();

  EntityMapper(
      Class entityClass,
      String keyspace,
      String table,
      ConsistencyLevel writeConsistency,
      ConsistencyLevel readConsistency) {
    this.entityClass = entityClass;
    this.keyspace = keyspace;
    this.table = table;
    this.writeConsistency = writeConsistency;
    this.readConsistency = readConsistency;
  }

  int primaryKeySize() {
    return partitionKeys.size() + clusteringColumns.size();
  }

  AliasedMappedProperty getPrimaryKeyColumn(int i) {
    return i < partitionKeys.size()
        ? partitionKeys.get(i)
        : clusteringColumns.get(i - partitionKeys.size());
  }

  void addColumns(
      List pks,
      List ccs,
      List rgs) {
    partitionKeys.addAll(pks);
    clusteringColumns.addAll(ccs);
    allColumns.addAll(pks);
    allColumns.addAll(ccs);
    allColumns.addAll(rgs);
  }

  T newEntity() {
    return ReflectionUtils.newInstance(entityClass);
  }
}