/*
 * Copyright 2004-2011 H2 Group.
 * Copyright 2011 James Moger.
 *
 * 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.iciql;

import com.iciql.Iciql.IndexType;

/**
 * This class provides utility methods to define primary keys, indexes, and set
 * the name of the table.
 */

public class Define {

	private static TableDefinition<?> currentTableDefinition;
	private static Iciql currentTable;

	public static void primaryKey(Object... columns) {
		checkInDefine();
		currentTableDefinition.definePrimaryKey(columns);
	}

	public static void index(Object... columns) {
		checkInDefine();
		currentTableDefinition.defineIndex(IndexType.STANDARD, columns);
	}

	public static void uniqueIndex(Object... columns) {
		checkInDefine();
		currentTableDefinition.defineIndex(IndexType.UNIQUE, columns);
	}

	public static void hashIndex(Object column) {
		checkInDefine();
		currentTableDefinition.defineIndex(IndexType.HASH, new Object[] { column });
	}

	public static void uniqueHashIndex(Object column) {
		checkInDefine();
		currentTableDefinition.defineIndex(IndexType.UNIQUE_HASH, new Object[] { column });
	}

	public static void columnName(Object column, String columnName) {
		checkInDefine();
		currentTableDefinition.defineColumnName(column, columnName);
	}

	public static void length(Object column, int length) {
		checkInDefine();
		currentTableDefinition.defineLength(column, length);
	}

	public static void scale(Object column, int scale) {
		checkInDefine();
		currentTableDefinition.defineScale(column, scale);
	}

	public static void tableName(String tableName) {
		checkInDefine();
		currentTableDefinition.defineTableName(tableName);
	}

	@SuppressWarnings("deprecation")
	static synchronized <T> void define(TableDefinition<T> tableDefinition, Iciql table) {
		currentTableDefinition = tableDefinition;
		currentTable = table;
		tableDefinition.mapObject(table);
		table.defineIQ();
		currentTable = null;
		currentTableDefinition = null;
	}

	private static void checkInDefine() {
		if (currentTable == null) {
			throw new IciqlException("This method may only be called "
					+ "from within the define() method, and the define() method "
					+ "is called by the framework.");
		}
	}

}