3 * Copyright (C) 2009-2019 SonarSource SA
4 * mailto:info AT sonarsource DOT com
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 3 of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 package org.sonar.ce.task.projectanalysis.component;
22 import static com.google.common.base.Preconditions.checkState;
24 abstract class AbstractComponentProvider implements ComponentProvider {
25 private boolean initialized = false;
28 public void ensureInitialized() {
29 if (!this.initialized) {
30 ensureInitializedImpl();
31 this.initialized = true;
35 protected abstract void ensureInitializedImpl();
40 this.initialized = false;
43 protected abstract void resetImpl();
46 public Component getByRef(int componentRef) {
47 checkState(this.initialized, "%s has not been initialized", getClass().getSimpleName());
48 return getByRefImpl(componentRef);
51 protected abstract Component getByRefImpl(int componentRef);