Android Open Source - spades Tables

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License

The source code is released under:

Apache License

Java Source Code

/**
 * Copyright (C) 2013 Pau Picas Sans <pau.picas@gmail.com>
 */* ww  w. j a va2  s. c  o  m*/
 * 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 cat.picas.spades;


import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Tables {

  private static volatile Tables sInstance;

  private List<Table> mTables = new ArrayList<Table>();

  public static Tables getInstance() {
    if (sInstance == null) {
      synchronized (Tables.class) {
        if (sInstance == null) {
          sInstance = new Tables();
        }
      }
    }

    return sInstance;
  }

  public static Table newTable(String tableName, Class<? extends Entity> entityClass) {
    Tables tables = getInstance();
    Table table = new Table(tables.nextTableIndex(), tableName, entityClass);
    tables.addTable(table, true);
    return table;
  }

  private Tables() {}

  public Table getTable(int index) {
    if (index < 0 || index >= mTables.size()) {
      return null;
    }

    return mTables.get(index);
  }

  public List<Table> getTables() {
    return Collections.unmodifiableList(mTables);
  }

  public int size() {
    return mTables.size();
  }

  protected int nextTableIndex() {
    return mTables.size();
  }

  protected void addTable(Table table, boolean validate) {
    if (validate) {
      for (Table existingTable : mTables) {
        if (existingTable.name.equals(table.name)
            && existingTable.name.equals(table.name)) {
          throw new IllegalArgumentException(String.format(
              "A Table named '%s' is already defined for the Entity '%s'",
              table.name, table.getEntity().getSimpleName()));
        }
      }
    }

    mTables.add(table);
  }
}

Java Source Code List

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